The regulation of pH by cells is accomplished primarily through osmosis (option A).
What is pH?pH is the measure of the acidity or alkalinity of a solution. It is measured on a scale of 1 - 14, with 7 being the neutral pH.
Our bodies live and die at a cellular level and the cells must maintain acidity or alkalinity in order to function and stay alive.
The regulation of pH in the internal environment of the cell is achieved through the actions of sodium-hydrogen (Na+–H+) ion exchangers and other pumps.
These aforementioned sensors can permit hydrogen ions to pass through the cell membrane, hence, the pH is interrelated with extracellular pH in this respect.
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What organelle showed up as a single, dark circular structure residing inside each cheek cell? is this structure present in elodea (plant) cells as well?
The nucleus shows up as a dark spot in the centre of each cheek cell.
The nucleus is housed in the cytoplasm of a cell; an environment that house the cell functional organelles. The function of the nucleus is to organize DNA into chromosomes via three basic steps known as replication, transcription and translation. The nucleus is surrounded by the nucleoli; a more darkly pigmented spherical structure and a nuclear envelope a double membrane (inner and outer membrane).
The surrounding environment of the nucleus (nucleoli and nuclear envelope) are the site for ribosome assemblage. In cells that produces a large amount of protein, it is easy to site the nucleoli. Cells are either uninuclear or multinuclear that is containing one or more nucleus. The red blood cell is an example of a uninuclear cells while cells in the skeletal muscle are example of multinuclear cells
Elodea's flat, cuboidal leaf cells include a large central vacuole that is encircled by a thin coating of cytoplasm.
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During photosynthesis, plants, algae, and certain bacteria remove carbon dioxide (co2) from the air and fix it into chemical compounds such as?
During photosynthesis, plants, algae, and certain bacteria remove carbon dioxide (CO₂) from the air and fix it into chemical compounds such as sugars.
Photosynthesis is the process of synthesizing one's own food using the inorganic raw material like sunlight, water and carbon dioxide to form food in the form of sugars. This process releases water and oxygen as a by-product. Photosynthesis is performed by plants, a few bacteria and fungi.
Sugars are chemically carbohydrates. They can be of two types: (a) simple sugars or monosaccharides like glucose, fructose or galactose, or (b) compound sugars, also called disaccharides like lactose, maltose and sucrose.
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The developmental occurrences you used to determine age stopped at age 25. What are other clues a forensic anthropologist may be able to use to determine age if the bones belong to a person over age 25?.
People over 25 have wear and tear on their bones. This is one of the other clues that a forensic anthropologist may be able to use to determine age if the bones belong to a person over age 25.
Cartilage would become worn down, and as a person ages, their bones would become more brittle and prone to fracture. A forensic anthropologist can estimate the age of a sub-adult skeleton by looking at the teeth and jaw.
The epiphyseal fusion and skull sutures found in the skeleton of young adults, however, can be used to conduct a comparative examination. The zigzag "seams" that connect the skull's bones are called sutures. Ectocranial suture analysis is less trustworthy as a method of aging than endocranial suture analysis (within the skull).
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When compared to other foods, fats have the most calories per gram. for energy to be harvested, the long carbon chains are broken into many two-carbon _______ molecules that enter the krebs cycle.
When compared to other foods, fats have the most calories per gram. for energy to be harvested, the long carbon chains are broken into many two-carbon Acetyl-CoA molecules that enter the krebs cycle.
krebs cycle is a series of reactions which occurs with the oxidation of acetyl-CoA which releases the energy to be stored for the undergoing the various process of system. Acetyl-CoA is derived from carbohydrates, proteins and fats.
the long chain fats are broken down into many two carbon acetyl-CoA. It can also be derived from amino acids or glucose.
The acetyl-CoA then enters the kreb cycle to produce energy.
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What is the main fuel source for the work of the cell?
glucose
deoxyribose sugar
oxygen
adenosine triphosphate
Answer:
Glucose
Explanation:
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Igg possesses _______ binding sites for antigen, and the t-cell receptor possesses _______ binding sites for antigen:
2, 1
Igg possesses 2 binding sites for antigen, and the t-cell receptor possesses 1 binding sites for antigen.
How are antigen binding sites are formed?The amino-terminal ends of L and H chains (variable domains) combine to form the antigen binding site. Similar to how the folded domains of the constant regions are formed, the two chains are folded to create globular variable domains, VH and VL.IgG: What Does It Mean?Known as immunoglobulin G, It is an antibody of some sort. Your immune system produces antibodies, which are proteins, to combat pathogens. Your cerebrospinal fluid's levels of IgG are measured using a CSF IgG index. Normally, your cerebrospinal fluid contains very little IgG.What is the role played by IgG in the body?IgG is typically the most prevalent antibody in blood. It guards against infections. Therefore, infections are more likely to affect those with IgG deficiencies. Your body produces unique proteins known as immunoglobulins or antibodies when it senses an attack.When IgG is positive, what happens?The presence of IgG indicates that the infection occurred several weeks to months ago. Additionally, it implies that you might no longer be contagious. IgG suggests that you might have some viral immunity, though you might not.To learn more about IgG visit:
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Water molecules clustered around nonpolar molecules contribute to hydrophobic interactions because ________.
Water molecules clustered around nonpolar molecules contribute to hydrophobic interactions because their number is minimised to increase he total entropy of water.
Definition of hydrophobic:Of, connected to, or affected by hydrophobia. lacking a water-related affinity. Learn More About Hydrophobic with Related Words and Phrases from the Sentences below.
What makes hydrophobic important?B DNA's interactions with proteins as well as its stability are both significantly influenced by hydrophobic forces. In this study, we hypothesize that the hydrophobic effect plays a crucial role in creating specificity in the interactions between transcription factor proteins and their consensus DNA sequence partners.
What does hydrophobic look example?Non-polar molecules make up hydrophobic compounds, which resist water bodies while drawing in other neutral molecules and non-polar solvents. Alkanes and other types of lipids are examples of these compounds.
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The bone that is situated next to the eardrum is called the __________; the bone that sits next to the oval window is called the __________.
The bone that is situated next to the eardrum is called the malleus.
The bone that sits next to the oval window is called the stapes.
Given,
The bone that is situated next to the eardrum is called the __________; the bone that sits next to the oval window is called the __________.
We need to fill in the blanks.
What are eardrums and their parts?The eardrum is a transparent gray membrane and there is a middle ear
bone called the malleus attached to the center part of the drum.
The space inside the ear drum is called the middle ear.
The three smallest bones of the body are found in the middle ear.
They are:
- The hammer (malleus)
It is attached to the eardrum.
- The anvil (incus)
It is in the middle of the chain of bones.
- The Stirrup (stapes)
It is attached to the membrane-covered opening that connects the middle ear with the inner ear (oval window)
Thus
The bone that is situated next to the eardrum is called the malleus.
The bone that sits next to the oval window is called the stapes.
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differentiation of large planetesimals and protoplanets a. is caused by heat created by the transformation of kinetic energy from collisions into thermal energy. b. is the process by which these bodies collide to form larger celestial bodies. c. was inhibited by the presence of radioactive elements because their decay absorbs heat from the surroundings. d. began with cooling down the component materials within these bodies.
The differentiation of large planetesimals and protoplanets- (c) was inhibited by the presence of radioactive elements because their decay absorbs heat from the surroundings.
Planetesimal is considered to the class of bodies that came together and condensed to form the planets. they are also called as a minute planet.
Protoplanets are large bodies that are present in orbit around the sun or any star and are in the phase of developing into a planet. they are formed by the collision and condensation of the planetesimals for millions of years.
the protoplanets will be colliding with each other to form the planets.
The presence of the radioactive elements absorbs the heat from the surroundings.
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Advise school leavers on ways to develop a positive attitude towards change that will assist them to adapt to a work environment
School dropouts can adopt a positive outlook on change in three ways that will help them adjust to the workplace:
Find and accept internship opportunities.Give your time voluntarily andNever stop learning.How will the above-listed points help a School leaver to adapt to a work environment?
School dropouts have the chance to experience what it's like to work for someone else by participating in internship programs and volunteering.
They can also study soft skills (those that are relevant to managing coworkers and customers) and hard skills (those that are directly related to the profession) during this time
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Based on the protein gel, the researcher concludes that the protein is glycosylated. how would the gel most likely appear if the protein were not glycosylated?
Answer: C
Explanation:
Connexus
please help me with this question please please
Animals, Plants, and Fungi are multicellular, meaning that they have more than one cell in their body. Each cell also has a nucleus in it, a property which the other two kingdoms, Bacteria and Eubacteria don't have.
Pls give brainliest.
The _______________ provide(s) an interface to the services provided by an operating system communication shared memory simulators system calls.
The system calls provide(s) an interface to the services provided by an operating system communication shared memory simulators system calls.
A system call in computing refers to the way in which a computer program requests a service from its operating system kernel at the time it is required. It can therefore be defined as the interaction between the program and the operating system.
System calls perform system-level operations, such as communicating with hardware devices, reading and writing files, by accessing the kernel operating system, which runs in kernel space.
What is an operating system?An operating system is the group or set of computer programs that manage the internal resources (memory, disk, information storage) and external resources of the computer.
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A ____ is a set of statements about the mechanisms underlying a behavior. postulate
Theory
A Theory is a set of statements about the mechanisms underlying a behavior.
A mathematical theory is an axiom-based mathematical model of a particular area of mathematics. It can also refer to a body of knowledge (based, for example, on accepted axioms and definitions) and, in this sense, to a particular area of mathematical study that falls inside a predetermined framework.What are theory and logic?The foundation of mathematics, meantime, is the deduction or derivation of qualities or propositions with respect to specific objects or elements contained in a certain set. Logic is the study of derivation and deduction of properties and propositions. Set theory is the study of the universal characteristics of elements and sets.To learn more about theory visit:
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Rings of muscle in the digestive tract that can open and close, regulating the movement of food into or out of parts of the digestive system, are:________
The ring of the muscle in the digestive tract, which can open and close, or regulate the movement of food into or out of parts of digestive system, is the pyloric sphincter.
Although the pyloric sphincter is present at the bottom of the stomach, and it is a muscular valve that opens to allow the food materials to pass from the stomach to the top of the small intestine of our digestive system.
Therefore, The pyloric sphincter serves as a type of gateway between stomach and small intestine, and It allows the contents of the stomach like food materials to pass into the small intestine. Also, It prevents digestive juices or partially digested food from re-entering into the stomach.
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What are the predisposing factors that make some people more biologically reactive than others? (check all that apply.)
Genetic make up and Prenatal experiences are the predisposing factors that make some people more biologically reactive than others
What are predisposing factors ?Predisposing elements are those that increase a child's likelihood of experiencing a problem (in this case, high anticipatory distress). These could include temperament, life experiences, or genetics. A specific incident or trigger that led to the current issue's emergence is referred to as a precipitating factor.
Predisposing traits were observed to include social structure, demographic parameters (age and gender), and (education, occupation, ethnicity, and other factors measuring status in the community, as well as coping and the health of the physical environment),Learn more about Predisposing factors here:
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After suffering a stroke, lulu finds she cannot move her left leg. this would suggest that the stroke damage is in the area of the:_______
After suffering a stroke, lulu finds she cannot move her left leg. this would suggest that the stroke damage is in the area of the Left Frontal Lobe.
What is Frontal Lobe?The frontal lobe is the largest of the four primary lobes of the brain in animals, and it is placed at the front of each cerebral hemisphere (in front of the parietal lobe and the temporal lobe). It is divided from the parietal lobe by a groove between tissues known as the central sulcus and from the temporal lobe by a deeper groove known as the lateral sulcus (Sylvian fissure). The frontal pole, one of the three poles of the cerebrum, is the most anterior rounded section of the frontal lobe (albeit it is not well-defined) .
The management of higher level executive functions as well as voluntary movement and expressive language depend on the frontal lobes. Executive functions are a group of cognitive abilities that include the ability to organise, plan, take the initiative, self-regulate, and control one's actions in order to accomplish a task.
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A democracy can have both representative and direct characteristics at the same time.
Yes, democracy can have both representative and direct characteristics at the same time.
There are many both-elements democracies in the Middle and Western US states. On the one hand, they have legislatures made up of Representatives and Senators, which is obviously a representative democracy because the representatives are chosen by their constituents and serve as their representatives in the legislature. Many of these states also have the referendum and initiative processes. In places like South Dakota and Nebraska, voters can use the initiative process to collect signatures and put possible laws on the ballot; if the proposed law achieves a majority vote, it becomes a law and cannot be vetoed. This is a direct democracy since the voters are deciding whether legislation should be passed without using their representatives.
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The nurse is assessing the function of a client's blood glucose meter. which is the best evidence that the meter is accurately measuring blood glucose?
When the nurse is assessing the function of a client's blood glucose meter, the best evidence that the meter accurately measures blood glucose is a sample of a control solution that yields results within the range of the client's meter.
A control solution is used to verify a blood glucose meter's performance. Other options are not used as quality checks (comparing two meters, using a nurse's sample, or averaging to match A1c).
People with diabetes require regular blood glucose monitoring to assist them in maintaining as close to normal blood glucose levels as for as long as possible. The advantages of keeping a blood glucose level continuously within the 4-7 mmol/L range include a reduction in the short-term, potentially severe complications of low blood sugar and a reduction in the frequency and severity of long-term problems of hyperglycemia.
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The two most commonly used antibiotics for therapy against uncomplicated tuberculosis are?
The two most commonly used antibiotics for therapy against uncomplicated tuberculosis are isoniazid , ethambutol, and pyrazinamide. Mycobacterium tuberculosis is the bacteria that causes tuberculosis (TB). Although the TB germs typically assault the lungs, they can also affect the kidney, spine, and brain.
Not every person who contracts the TB germs gets ill. Mycobacterium tuberculosis is a type of bacteria that causes tuberculosis (TB). When a person with active TB disease in their lungs coughs or sneezes, TB bacteria-containing droplets that are ejected are inhaled by the other person. Although TB has the potential to be a serious infection, the correct drugs can cure it.
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True or false? an arteriogram is a procedure that uses contrast material to study the flow of blood in large arteries and to identify areas of narrowing or obstruction.
It is true that an arteriogram is a procedure that uses contrast material to study the flow of blood in large arteries and to identify areas of narrowing or obstruction.
Arteriogram is also known as angiogram. It uses X-rays and dyes to view the inside if the arteries. The dye in inserted into an artery in the leg and its path is tracked down to view the status of the arteries. The insertion is done through a very thin tube.
Blood is the red-colored fluid present inside the body of an organism. It consists of plasma, red blood cells, white blood cells and platelets. The red color of the blood is due to pigment called hemoglobin.
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The heart is
O lateral; superior
O medial; inferior
O inferior, medial
O superior, inferior
to the arm and
to the cranial cavity.
Marcus often has a burning sensation or pain in his stomach after eating. he often experiences occasional vomiting. he may be suffering from:_____.
Marcus often has a burning sensation or pain in his stomach after eating. he often experiences occasional vomiting. he may be suffering from ulcers.
What is the stomach?Food is digested by the stomach, a J-shaped organ. It generates acids and enzymes, which are molecules that cause chemical reactions (digestive juices). Food is broken down by this mixture of enzymes and digestive juices so that it may move to your small intestine. A portion of the gastrointestinal (GI) tract includes your stomach.
Stomach ulcersA sore that appears on the esophageal, stomach, or small intestine lining.
When stomach acid affects the lining of the digestive tract, ulcers develop. The H bacteria is one of the usual culprits. Pylori and painkillers with anti-inflammatory properties, such as aspirin.
One typical sign is soreness in the upper abdomen. Medication is frequently used as part of treatment to reduce stomach acid production. Antibiotics might be required if a bacterial infection is to blame.
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Approximately what percent of the sunlight striking the earth is actually captured by the biosphere on any given day? brainloy
About 71% of the sunlight that reaches the Earth is absorbed by the surface of the earth and atmosphere.
What is light energy?The capacity to make different forms of light visible to human sight makes light energy a sort of kinetic energy. Light is referred to as electromagnetic radiation that is produced by hot things like the sun, lasers, and lightbulbs.
Photons, which are tiny energy packets, are present in light. Photons are created when the atoms of an item undergo a heating process; this is how photons are created. The heat excites the electrons, which leads to their producing more energy. A photon is produced when the energy is released, and as the substance heats up, more photons are produced.
Therefore, 71% of the sunlight that reaches the Earth is absorbed by the surface of the earth and atmosphere.
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With sleep deprivation, the levels of leptin __with sleep deprivation, the levels of leptin ________ and the levels of ghrelin ________.______ and the levels of ghrelin ________.
With sleep deprivation, the levels of leptin fall and the levels of ghrelin rise.
What is leptin ?
Your body secretes a hormone called leptin that aids in long-term maintenance of your normal weight. Your blood's concentration of leptin and how much body fat you have are intimately correlated. Despite the fact that your body has enough fat reserves, leptin resistance makes you feel hungry and make you eat more.
What is ghrelin ?
Small amounts of ghrelin are also released by the small intestine, pancreas, and brain. Ghrelin is primarily synthesized and released by the stomach.
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Explain how bacteria affect the water-holding and nutrient-holding capacity of soil?
Bacteria improve the nutrient holding capacity of the soil as they perform nutrient cycling as well as decomposition of dead and decaying matter that increases the nutrient richness of the soil. The water holding capacity is improved by the formation of aggregates of soil that hold the water molecules efficiently.
Nutrient cycling is the process in which a nutrient follows a specific path repeatedly and benefits the living organisms in the process. The pathway generally includes of both, the living as well as the non-living factors. The various nutrient cycles that run in the nature are: carbon cycle, sulfur cycle, nitrogen cycle, etc.
Decomposition is the process of decaying of the dead organic matter of plants or animal that results in the transfer of nutrients from the dead organic matter to the soil.
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Damaged tissues are normally repaired through replacement of damaged or dead cells through a process called fibrosis. True or false?.
Damaged tissues are normally repaired through replacement of damaged or dead cells through a process called regeneration, hence, it is false.
Damage to tissues can occur internally or externally. When this occurs, a series of events called tissue repair are set in motion to contain the damage and initiate the healing process. One of these processes is called regeneration.
When the body replaces damaged or dead cells using cells of the same type, it is called regeneration. This occurs in most skin injuries like cuts, minor burns or scrapes and often doesn't leave any major scar. The internal organ that regenerates outstandingly well is the liver. Since the same type of cells are used during regeneration, the normal function of the organ is restored after regeneration.
Fibrosis occurs only when the damage done to the organ or tissue is excessive. Scar tissue called fibroblasts are deposited forming scar tissue to hold the organ or tissue together.
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A homeostatic imbalance that activates these bone cells would lead to a loss of bone density.
Answer: Osteoclasts are the bone cells that break down bone. If they were activated more than normal, you should expect to see bone loss.
Explanation:
Match each word to It's correct meaning.
1. carbon dioxide
2. respiration
3. saprophyte
chemical process of cells doing
work; breathing
organism that gets its food from
decaying plants or animals
gas given off in animal respiration
that is absorbed from the air by plants in
photosynthesis
Answer:
and
Explanation:
Carbon doioxide-gas given off in animal respiration
that is absorbed from the air by plants in
photosynthesis.
Respiration - chemical process of cells doing
work; breathing.
Saprophyte-organism that gets its food from
decaying plants or animals
The functions of the muscles are to provide _____ and movement and to produce select .
Answer:
The functions of the muscles are to provide stability and movement.
Explanation:
And over 600 muscles make up the muscular system, which cooperates to allow the body to operate properly. The primary purpose of the muscular system is to facilitate movement. Muscle contractions enable both rough and precise movement. The majority of bodily muscle action is controlled consciously. However, certain actions—like pulling a hand away from a hot source—are reflexive. Stretching across joints, muscle tendons help keep joints stable. The stabilising function of the muscle tendons with in knee and also shoulder joints is essential.
The abdominal, back, and pelvic muscles make up the core muscles, which also stabilise the body and support activities like lifting weights. Skeletal muscles serve in maintaining the proper posture of the body while an individual is sitting or going to stand. This is referred to as posture.
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