The complex external covering composed of two or three layers found on the majority of bacteria is termed the cell?

Answers

Answer 1

The complex external covering composed of two or three layers found on the majority of bacteria is termed the cell envelope.

Bacteria are the prokaryotic microorganisms that cannot be seen through unaided eyes. These are omnipresent creatures that can be visualized only under a microscope. The examples of bacteria are: E. coli, Helicobacter pylori, Lactobacillus, etc.

Cell envelope is the outermost layer that gives the cell its structure integrity and also protects the cell. The envelope is composed of three layers: cell membrane, cell wall and an outer membrane (if present). The envelope is also involved in the cell growth and division.

To know more about cell envelope, here

brainly.com/question/28231946

#SPJ4


Related Questions

Characteristics such as race, religion, national origin, or sex, which are protected by government assurances of civil rights, are called:_______

Answers

Characteristics such as race, religion, national origin, or sex, which are protected by government assurances of civil rights, are called inherent characteristics.

inherent characteristics are something that a person have acquired from inherently since his or her birth. It can be race, religion, national origin, sex, etc.

Civil rights are the personal rights that are guaranteed by the government of america to its citizens. It is protected by US constitution as well as by the various laws enacted by the congress like Americans with disabilities act of 1990, civil rights act of 1964.

Civil rights movement occurred in 1950-60s led by Martin luther, Malcolm X, Little rocky, etc.

To learn more about civil rights here

https://brainly.com/question/1142564

#SPJ4

2. upon being diagnosed with cirrhosis of the liver, doctors urge patients to limit the amount of salt intake in their diet to help decrease the rate of scarring. the liver also produces a protein called albumin, which is responsible for maintaining osmotic pressure inside the blood plasma compartment of the body. over time scarring of the liver leads to a decreased production of this protein. when the levels fall, the blood plasma becomes (hypotonic, hypertonic) to the interstitial fluid. due to this osmotic imbalance, the tissues become (hypertonic, hypotonic) which leads to fluid seeping from the legs and feet. (2pt)

Answers

Signals are given to the kidneys to retain salt and water in the body when liver cirrhosis gets worse. Due to gravity when standing or sitting, extra salt and water first build up in the tissue beneath the skin of the ankles and legs.

What exactly is liver cirrhosis?

Healthy liver tissue is gradually replaced by scar tissue in cirrhosis, a disease. The connective tissue reduces the liver's capacity to process nutrients, hormones, medicines, and naturally occurring pollutants as well as limits blood flow through the liver (poisons). Additionally, it reduces the liver's production of proteins and other chemicals.

To know more about cirrhosis of the liver go to the given

https://brainly.in/question/8357942

#SPJ4

As cirrhosis of the liver becomes severe, signals are sent to the kidneys to retain salt and water within the body. the excess salt and water first accumulate in the tissue beneath the skin of the ankles and legs because of the effect of gravity when standing or sitting.

What is cirrhosis of the liver?

Cirrhosis is a slowly developing disease in which healthy liver tissue is replaced with scar tissue. The animal tissue blocks the flow of blood through the liver and slows the liver's ability to process nutrients, hormones, drugs, and natural toxins (poisons).

It also reduces the assembly of proteins and other substances made by the liver.

How quickly does cirrhosis progress?

Cirrhosis may be a very slow-acting disease. It can take up to 30 years to develop. the quantity of time it takes for cirrhosis to develop depends on a few factors, including the explanation for the cirrhosis, an individual's general health, lifestyle and genetics. Cirrhosis may be a serious condition.

Learn more about liver cirrhosis:

brainly.com/question/2266497

#SPJ4

__________ are tunnel-like junctions that can occur anywhere along the lateral membranes of adjacent cells.

Answers

Gap Junction are tunnel-like junctions that can occur anywhere along the lateral membranes of adjacent cells.

Gap Junction- The intercellular networks known as gap junctions enable ions and small molecules to pass freely between cells. Nearly all cells in solid tissues are connected by gap junctions, which were initially discovered as low-resistance ion channels joining excited cells (nerve and muscle).

Cells- The fundamental units of all living organisms are cells. There are many billions of cells in a human body. They provide the body structure, absorb nutrients from meals, turn those food into energy, and perform certain tasks. A cell is a unit of tissue found in an animal's muscle.

To know more about the Gap Junction, click on the below link,

https://brainly.com/question/8293781

#SPJ4

When the electrons are released from the electron acceptor molecules, what else is produced?

Answers

H+ is created when the electrons are liberated from the electron acceptor molecules.

Hydrogen ion (H+)- Whenever a hydrogen atom acquires or loses an electron, a hydrogen ion is produced. The only time a positively charged hydrogen ion (or proton) is observed alone is when it is in a gaseous condition in a place that is almost particle-free.

Atom- A chemical element is uniquely defined by its atoms, which are tiny pieces of substance. An atom is made up of a core nucleus and one or more negatively charged electrons that orbit it. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present.

To know more about Hydrogen atom, click on the below link,

https://brainly.com/question/8806577

#SPJ4

Using nitrogen-fixing sobean crops to add nitrogen to degraded soils is an example of?

Answers

Biological augmentation

Using nitrogen-fixing soybean crops to add nitrogen to degraded soils is an example of Biological augmentation.

What is biological augmentation?The process of accelerating the breakdown of a pollutant through the addition of archaea or bacterial cultures is known as biological augmentation. It's possible that organisms from contaminated locations can already break down garbage, but possibly slowly and inefficiently.

What is an example of biological enhancement?Systems that use biofiltration are frequently employed to remove toxins from soil or groundwater. Treatment ponds, slow sand filters, and bioswales are a few types of biofilters.

What purpose does biological enhancement serve?The best part of this addition is that it is natural and enhances the quality, clarity, and reduction of organic sediments (muck) that build up over time on the bottom of a body of water. Clean-Flo is a pioneer in the stimulation of native microorganisms in addition to the addition of microbes.

To learn more about biological augmentation visit:

https://brainly.com/question/10453445

#SPJ4

2. During an activity, a teacher labeled the following scenario as hypertonic. Is she correct? Why or why no
%H₂0
15%
solute
80% H₂O
% solute

Answers

It is  a hypotonic solution because the solute concentration is more than the soluion.

hypotonic solution is the   solution  that has a lower solute concentration than the cell so water moves into the cell causing plant cells to swell and animal cells to swell and burst whereas hypertonic solution is the solution that  has a higher solute concentration than the cell so water moves out of the cell and into the solution causing the cell to plasmolyze.During hypotonic solution,  the plant  cell  fills up and become more rigid causes  (turgor pressure) on the other hand animal cell The cell would burst (hemolysis).

To know more about hypotonic solution visit :

https://brainly.com/question/28020628

#SPJ9

Aspirin, like many pharmaceutical drugs, can access the cell because it is a weak acid. this occurs because:_________

Answers

Aspirin can access the cell because it can cross the membrane, as a weak acid, in its unchanged form.

Aspirin is a non-steroidal anti-inflammatory drug, commonly referred to as NSAID. Aspirin is a common drug (or a weak acid) that is used to treat minor ailments like headaches, mild fever, body aches, etc. It is also used as an anti-inflammatory drug and also to reduce the risk of blood clots after heart attacks. It can be purchased from a medical store without the prescription of a doctor.

Aspirin is not recommended for children below 18 years of age. If a child takes it with the flu or cold, it may have adverse effects. It can cause Reye's syndrome in children which can cause permanent brain injury.

Minor symptoms in the human body are caused by prostaglandins. Prostaglandins are substances produced by certain proteins, called cyclooxygenases. Aspirin inhibits this protein and thus prevents symptoms like pain, inflammation, headache, cardiovascular events, etc.

To know more about Aspirin, refer to the following link:

https://brainly.com/question/13533428

#SPJ4

surfactant protein a promoter directs the expression of cre recombinase in brain microvascular endothelial cells of transgenic mice

Answers

Surfactant protein a promoter directs the expression of CRE recombinase in brain microvascular endothelial cells of transgenic mice Matrix Biol. Inflammation, tumor metastasis, and wound healing all rely on microvascular Endothelial cells.

Methods for studying these processes in vitro utilizing cells obtained from adult skin, the inner and outer segments of neonatal foreskin, and experimental animals are discussed. The endothelium is a thin membrane that lines the lining of blood protein arteries and the heart. Endothelial cells secrete chemicals that regulate vascular relaxation and contraction, as well as enzymes that regulate blood clotting, immunological function, and platelet adhesion (a whitish substance found in the blood).

To learn more about protein, click here.

https://brainly.com/question/17095120

#SPJ4

The skeletal muscle fibers that fatigue most easily are:_______
1. red muscle fibers.
2. slow oxidative (type i) fibers.
3. fast glycolytic (type iib) fibers.

Answers

The skeletal muscle fibers that fatigue most easily are fast glycolytic (type iib) fibers.

What is skeletal muscle fibers ?

Flexible muscle fibers that range in diameter from less than half an inch to just over three inches make up skeletal muscles. Typically, these fibers run the entire length of the muscle. You may perform a wide variety of actions because to the muscles' ability to move bones when their fibers contract (tighten).

What are the characteristics of skeletal muscle fibers?

Skeletal muscle is striated, similar to cardiac muscle; it has long, thin, multinucleated fibers that are crossed is covered by tiny red and white lines that give the muscle its distinctive appearance. Connective tissue holds skeletal muscle fibers together while allowing them to communicate with blood vessels and neurons.

To know more about neurons visit :

https://brainly.com/question/24217914

#SPJ4

True or false: osteocytes and osteoclasts develop from the same type of stem cell.

Answers

Osteocytes and osteoclasts develop from the different type of stem cell. Thus, the give statement is False.

What is an Osteocytes?

Osteocyte, a cell that exists in the substance of full fledged bone. It possesses a little chamber called a lacuna, which is contained in the calcified framework of bone. Osteocytes get from osteoblasts, or bone-shaping cells, and are basically osteoblasts encircled by the items they emitted.

Cytoplasmic cycles of the osteocyte expand away from the phone toward different osteocytes in little channels called canaliculi. Through these canaliculi, supplements and side-effects are traded to keep up with the suitability of the osteocyte.

Learn more about Osteocyte here:

https://brainly.com/question/2384090

#SPJ1

A location on a chromosome that codes for biochemical variations in the phenotype is called:_________

Answers

A gene is a region on a chromosome that codes for phenotypic biochemical differences.

Gene, what do you mean?The fundamental structural and operational component of heredity is a gene. DNA is the component of genes. Some genes serve as blueprints for the synthesis of proteins. Many genes do not, however, code for proteins. A few hundreds DNA bases to more than 2 million bases make up a gene in a human.A gene example is what?You might acquire the characteristic for green eyes from your parents, for instance, if both of them have them. Alternatively, if your mother has freckles, you may also have them if you received the freckle gene from her. All animals and plants contain genes in addition to human beings.

learn more about gene here

https://brainly.com/question/1480756

#SPJ4

Many foods, for example, bacon and salt cod, are preserved with high concentrations of salt applied to the outside of the meat. how can high concentrations of salt inhibit the growth of bacteria?

Answers

High concentrations of salt can inhibit the growth of bacteria by causing the bacteria to shrink because water leaves the bacterial cell.

What is a Hypertonic solution?

This is defined as a type of solution which has a large amount of particles which are dissolved thereby making it have a high concentration.

High concentrations of salt applied to the outside of the meat means it is hypertonic and therefore causes the bacteria to shrink because water molecule leaves the cells thereby destroying their structure preventing metabolic reactions from occurring which leads to their death.

Read more about Hypertonic solution here https://brainly.com/question/24566077

#SPJ1

Proteins and carbohydrates are built up from their basic building blocks by a process known as:_________

Answers

Proteins and carbohydrates are built up from their basic building blocks by a process known as Dehydration synthesis reactions.

The crucial procedure known as Dehydration Synthesis Reactions brings together the constituent parts of carbohydrates, proteins, lipids, and nucleic acids. With the removal of water, these processes combine two or more monomers to create a sizable component of a macromolecule.

Dehydration synthesis reactions include the combining or synthesis of the same or distinct monomer units while removing the water molecules from the reaction. It is a specific type of condensation reaction in which two additional molecules cause the elimination of two water molecules.

During dehydration synthesis, a water molecule is either released when the hydrogen of one monomer reacts with the hydroxyl group of another monomer or when two hydrogens from one monomer join with one oxygen from the other monomer.

To know more about Dehydration Synthesis Reactions refer to:  https://brainly.com/question/28233389

#SPJ4

The movement of oxygen and carbon dioxide between the alveoli and circulating blood is called:________

Answers

The movement of oxygen and carbon dioxide between the alveoli and circulating blood is called: respiration

The process in the human body that consists in the movement of oxygen and carbon dioxide between the alveoli and circulating blood is called respiration this process takes place in the respiratory tract.

What is the respiratory tract?

Is the set of organs and ducts that form the structure in which the process related to human respiration takes place. It is divided into lower and upper, the lower respiratory tract is formed by the trachea, the bronchi and their branches inside the lungs, the bronchioles, and the upper respiratory tract is formed from the nose, the mouth to the vocal cords, and includes the pharynx and the larynx.

Learn more about the respiratory tract at: brainly.com/question/2619922

#SPJ4

Which organelle is involved in the breakdown of fatty acids and the detoxification of alcohol?

Answers

Peroxisomes is a type of organelle that is involved in the breakdown of fatty acids and the detoxification of alcohol.

What are peroxisomes?

Peroxisomes are small membrane-enclosed organelles which contain specific type of enzymes that is involved in various metabolic reactions, such as several type of energy metabolism. Peroxisomes perform important functions such as lipid metabolism and detoxification of chemicals inside the cell. They also carry out oxidation reactions that is responsible for the break down of fatty acids and amino acids. It is also responsible for the detoxification of alcohol. Peroxisomes also play a vital role in the oxidation of particular biomolecules.

So we can conclude that Peroxisomes is a type of organelle that is involved in the breakdown of fatty acids and the detoxification of alcohol.

Learn more about fatty acids here: https://brainly.com/question/27960389

#SPJ1

I need help and fast.

Who coined the term "artificial intelligence"?
A. Bill Gates
B. John McCarthy
C. Steve Jobs
D. Jeff Bezos

Answers

B: John McCarthy


John McCarthy, a professor emeritus of computer science at Stanford, the man who coined the term "artificial intelligence" and subsequently went on to define the field for more than five decades, died suddenly at his home in Stanford in the early morning Monday, Oct. 24. He was 84.

how can inheriting new characteristics be helpful for an organism? ​

Answers

Answer:

It will essentially help the organism for when it evolves whether it inherits good or bad characteristics.

Explanation:

Because it will have to evolve, it will either die out or thrive through those new characteristics. Which is a part of life.

What sentence represents a hypothesis?

Answers

Answer:

2

Explanation:

A hypothesis uses "IF" and "THEN"

a group of similar cells that perform a specific function

Answers

this is called tissue

In eukaryotes, the endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles, nuclear envelope, and plasma membrane form a network of membranes called the:_________

Answers

According to the research, the correct option is endomembrane system. In eukaryotes, the endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles, nuclear envelope, and plasma membrane form a network of membranes called the endomembrane system.

What is endomembrane system?

It is the set of internal membranes that divides the cell into compartments formed by ER, Golgi complex, endosomes, lysosomes and nuclear envelope, all these organelles are members of the same family and communicate intensely with each other and with the outside of the cell via transport vesicles.

In this sense, it makes it possible to compartmentalize its interior, creating different spaces in which reactions can be carried out, participating in the production of cytoplasmic organelles.

Therefore, we can conclude that according to the research, the correct option is endomembrane system. In eukaryotes, the endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles, nuclear envelope, and plasma membrane form a network of membranes called the endomembrane system.

Learn more about endomembrane system here: https://brainly.com/question/13228109

#SPJ1

The process of engulfing particles (such as bacteria) by surrounding the particle and drawing it into the cell is referred to as?

Answers

The process of engulfing particles (such as bacteria) by surrounding the particle and drawing it into the cell is referred to as phagocytosis.

In the field of immunology, phagocytosis can be described as a process of endocytosis where foreign particles, such as bacteria, are engulfed. Phagocytosis is a part of the immune response that is generated by the body.

In order for a cell to engulf a particle, the cell membrane surrounds the foreign particles, various enzymes are then secreted onto the particle, and then it is engulfed. The process of phagocytosis helps in removing infectious agents and dead cells from the body.

Cells such as neutrophils and macrophages are referred to as professional phagocytes as they actively carry out the process of phagocytosis.

To learn more about phagocytosis, click here:

https://brainly.com/question/12977970

#SPJ4

Meiosis is the process that produces sperm and eggs by reducing the gamete cell's number of chromosomes from _____to _____.
Select one:

a.
diploid to haploid

b.
haploid to polyploidy

c.
diploid to monoploidy

d.
haploid to diploid

it's not b

Answers

Answer: Your answer my boy is A.) diploid to haploid.

Explanation: I just did this assignment .It would be great if I could get Brainliest.

Creating a formula by _____ to the specific cells that are to be part of the formula is more accurate than typing the cell references.

Answers

Creating a formula by pointing to the specific cells that are to be part of the formula is more accurate than typing the cell references.

This is further explained below.

What are cell references?

Generally, When working with Excel, you may refer to the value of a separate cell or cell range on the same worksheet or on a different worksheet inside the same spreadsheet by using something called a cell reference.

In a formula, a cell reference may stand in for a variable if the need arises.

In conclusion, Rather than manually putting in the cell references, it is more accurate to create a formula by pointing to the individual cells that need to be included in the formula.

Read more about cell references

https://brainly.com/question/1213008

#SPJ1

What is an Hypothesis

Answers

educated guess or a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

The parent cell that enters meiosis is diploid, whereas the four daughter cells that result are haploid. True or false?.

Answers

True

The parent cell that enters meiosis is diploid, whereas the four daughter cells that result are haploid.

In both meiosis I and meiosis II, the DNA content is cut in half. In meiosis I, the ploidy level transforms from diploid to haploid, and it stays haploid in meiosis II.

Which of these is a meiotic function?Gametes, or sex cells, are created during meiosis. There are four haploid daughter cells formed during meiosis (containing half as many chromosomes as the parent cell).

Which four primary stages of meiosis are there?Since meiosis involves two rounds of cell division, a beginning cell can generate four gametes (eggs or sperm). Cells move through prophase, metaphase, anaphase, and telophase with each round of division.

To learn more about meiosis visit:

https://brainly.com/question/10621150

#SPJ4

Under what circumstances might the plates of the earth stop moving?

Answers

Answer is for the earths core to cool enough for convection to stop, then the plates would have no convection current to move them.

Explanation: If the Earth's core were to cool down, the convection currents in the mantle would stop moving. Since the convection currents drive the plates, they would stop moving.

For the earths core to cool enough for convection to stop, then the plates would have no convection current to move them.

What do you mean by convection?

Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity.

Convection occurs on a large scale in atmospheres, oceans, planetary mantles, and it provides the mechanism of heat transfer for a large fraction of the outermost interiors of our sun and all stars.

Fluid movement during convection may be invisibly slow, or it may be obvious and rapid, as in a hurricane.

Learn more about convection:

https://brainly.com/question/16635311

#SPJ2

Which type of malware relies on lolbins?
a. pup
b. bot
c. file-based virus
d. fileless virus

Answers

Correct option d) fileless virus

Fileless viruses take gain of local offerings and methods which might be a part of the working machine (OS) to keep away from detection and perform its attacks, and those local offerings utilized in a fileless virus are referred to as living-off-the-land binaries.

LOLBins is the abbreviated time period for Living Off the Land Binaries. Living Off the Land Binaries are binaries of a non-malicious nature, neighborhood to the working machine, which have been utilized and exploited with the aid of using cyber criminals and crime agencies to camouflage their malicious pastime.

Fileless malware is a kind of malicious pastime that makes use of local, valid gear constructed right into a machine to execute a cyber attack. Unlike conventional malware, fileless malware does now no longer require an attacker to put in any code on a target's machine, making it tough to detect.

To learn more about cyber attack here

https://brainly.com/question/28270451

#SPJ4

Biomedical research has led to the development of technology that can keep ill or incapacitated. patients
alive. How does this technology affect the decision on when they should be used on patients?

Answers

Today, doctors and nurses use handheld devices to record patients' real-time data and instantly update their medical history. This makes more accurate and more efficient diagnoses and treatments. Centralization of critical patient data and lab results has really improved the quality of healthcare

The resolving power of the earliest electron microscopes was at least ten times higher than that of the light microscopes, mainly because?

Answers

The resolving power of the earliest electron microscopes was at least ten times higher than that of the light microscopes, mainly because the wavelength of electrons is much shorter than the wavelength of light.

The electron microscope uses a beam of accelerated electrons to magnify the object whereas the light microscope uses visible light for this purpose. Unlike the light microscope, the electron microscope uses electromagnets as lenses.

The magnification of the electron microscope is much higher as compared to the light microscope and it produces high-resolution images. However, the Specimen preparation of an electron microscope takes several days while the Specimen preparation of the light microscope takes only a few minutes.

If you need to learn more about electron microscopes, click here

https://brainly.com/question/2437983?referrer=searchResults

#SPJ4

The harrison act required any person in the business of dealing in drugs covered by the act was required to register annually and pay a special annual tax of ______.

Answers

Anyone involved in the drug trade who was subject to the Harrison Act was required to register yearly and pay an additional $1 annual tax.

What prohibited by the Harrison Act?Congress passed the Harrison Act, which outlawed cocaine and opiates, in 1914. Alcohol prohibition soon followed, and by 1918, the United States had become a "dry" country. However, it did not indicate that drug use would stop.By whom is the Harrison Act enforced?In the US, a drug division was created. It was the Treasury Department that put a stop to all drug sales. By the middle of the 1920s, there was more demand for pharmaceuticals on the black market, indicating that the Harrison Act had really had an impact on the supply of narcotics.

learn more about Harrison Act here

https://brainly.com/question/10684054

#SPJ4

Other Questions
Writing Link Write three sentences about a concert or other performance you have seen. Use at least three collective nouns in your sentences. What features of the faceted histograms do you look at to judge whether one variable explains variation in another variable? Exercise 2 Underline the correct word or words in parentheses. Sean planned the student council meeting (good, well).The play we saw last weekend was very (good, well). The cue utilization hypothesis suggests optimal performance results from:____. A 7-year-old boy was struck by a car while riding his bicycle. his bp is 60/40 mm hg, pulse is 160 beats/min, and respirations are 34 breaths/min. how much iv fluid should you administer per bolus? Recognizing challenges is the first step in findingsolutions. Check each of the following statementsthat are currently considered challenges for thefoodservice industry. If you find yourself standing in an oak-hickory forest in southern michigan, what you see around you represents a good example of a:_________ The nurse demonstrates appropriate technique when using what part of the hand to assess for fremitus in a client? c. Cul es el propsito del emisor con este mensaje? Explicamos.d. Identificamos los argumentos plateados en el texto.e. Cul es nuestra opinin sobre el tema? Argumentamos what is the graph picture below pls helppppp for brainlest Greenwood Company manufactures two products15,000 units of Product Y and 7,000 units of Product Z. The company uses a plantwide overhead rate based on direct labor-hours. It is considering implementing an activity-based costing (ABC) system that allocates all of its manufacturing overhead to four cost pools. The following additional information is available for the company as a whole and for Products Y and Z:Activity Cost Pool Activity Measure Estimated Overhead Cost Expected ActivityMachining Machine-hours $ 231,000 11,000 MHsMachine setups Number of setups $ 180,000 300 setupsProduction design Number of products $ 94,000 2 productsGeneral factory Direct labor-hours $ 260,000 10,000 DLHsActivity Measure Product Y Product ZMachining 9,000 2,000Number of setups 60 240Number of products 1 1Direct labor-hours 9,000 1,000 helppppppppppppppppppp Consider this solution to a problem. what is the number of the step where the mistake is made? question 4 options: step 1 step 2 step 3 step 4 Which of the following would you expect to form a molecular compound?Potassium and nitrogenSodium and bromineHydrogen and sulfurIron and oxygen Exercise 2 Circle the appositive or appositive phrase in each sentence.She lives in Seattle, the capital of Washington. To make a water-insoluble substance water-soluble, a chemist could add groups with bonds between. Difference between nomads and hunter-gatherers of ancient times If you need to examine antibodies against a virus in a patient, which part of the blood will you need?. Green Sun has net working capital of $400, current assets of $2,315, and inventory of $1,100. What is the Quick ratio? Lines of lattitude run from_____to____and measure distances______and_____of the_____.