Answer:
A graph in earth science is a picture that represents data or specific sets of data in a helpful way.
You are observing a tissue under the microscope and notice dark concentric circles of matrix and osteocytes in lacunae. You identify this tissue as __________.
Bone tissue
You are observing a tissue under the microscope and notice dark concentric circles of matrix and osteocytes in lacunae. You identify this tissue as bone tissue.
What does bone tissue look like?Osteons or haversian systems are tightly packed together to form compact bone. The osteon is made up of concentric rings (lamellae) of matrix surrounding a central canal known as the osteonic (haversian) canal. The bone cells (osteocytes), which are situated between the rings of matrix, are found in regions known as lacunae.Which 4 tissues are present in bones?Osteoblasts, osteocytes, osteoclasts, and osteogenic cells are the four types of bone cells that make up bone tissues.How does bone tissue develop?The recruitment and growth of bone progenitor cells from neighboring tissues is the first step in the development of bone tissue. Next come differentiation, matrix production, and mineralization.
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A plant of genotype ccdd is crossed to ccdd and the f1 is testcrossed to ccdd. if the genes are unlinked, what percentage of ccdd recombinants will result?
A plant of genotype ccdd is crossed to ccdd and the f1 is testcrossed to ccdd. if the genes are unlinked, what percentage of ccdd recombinants will result in 0.20255075%
What is Genotype?An organism's genotype is made up of all of its genetic components. The alleles or variations that a person holds in a specific gene or genetic region are also referred to as the genotype.
The amount of copies of each chromosomes found in that species, also known as ploidy, determines how many alleles a person can have for a certain gene. In diploid organisms like humans, there are two complete sets of chromosomes, which means that each person has two different alleles for each gene. Homozygous refers to a genotype where both alleles are the same. Heterozygous refers to a genotype when there are two distinct alleles.
Phenotype, the observable qualities and attributes of an individual or creature, is influenced by genotype.
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What is the general function of enzymes within a cell?
a. to promote the synthesis of monomers
b. to induce chemical reactions
c. to stop chemical reactions
d. to speed up chemical reactions
If a joint is enclosed in a tough connective tissue articular capsule and if it contains a joint cavity, it is classified as:______
If a joint is enclosed in a tough connective tissue articular capsule and if it contains a joint cavity, it is classified as a synovial joint.
What is a Joint?
This is defined as an area where two or more bones and contains different connective structures such as cartilages which help reduces the friction which occur during the movement of body parts.
Joint is classified into different categories and one of them is the synovial joint which is characterized by a tough connective tissue articular capsule which contains a joint cavity.
They are also mostly found in the joints of the limb such as the shoulders and hips and offers greater flexibility.
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What is an important regulation process that connects various parts of a system?
Answer:
An important regulation process that connects various parts of a system is feedback.
Explanation:
A reaction inside a biological system—a molecule, tissue, species, or population—that affects the behavior or performance of that system is known as feedback. It essentially involves the regulation of a metabolic pathway by the activity's byproducts.
Both positive and negative feedback is possible. Negative feedback is indeed a component of any feedback mechanism that keeps things in balance. Positive feedback in biology occurs far less frequently. Whenever a change in variable results in a reaction that undoes the original change, this is known as negative feedback. A reaction is generated by a change in a factor when there is positive feedback. For instance, a warm-blooded species like a whale keeps a greater body heat to improve the internal equilibrium and while a cold-blooded animal such as fish retains a lower temperature of the body in accordance with the surrounding environment.
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Two evolutionary processes that may produce a cline in a human allele or trait are?
Two evolutionary processes that may produce a cline in a human allele or trait are gene flow and genetic drift.
What is genetic Drift?
Genetic drift is the arbitrary change in the population's frequency of a gene variant that already exists. Gene variations may totally vanish due to genetic drift, which would limit genetic diversity. Additionally, it can make previously uncommon alleles far more common and even fixed.
What is gene flow?
The phrase "gene flow" refers to the processes through which genes are transferred from one group to another. Gene flow in anthropology more broadly refers to allelic change brought on by people moving from one place to another.
Hence, in both the cases the allelic frequency is changed and thus with the mutation and natural selection new clines can be formed.
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The cell theory includes different tenets to explain the organization of life. what principles comprise the cell theory? check all that apply.
The principles that comprise the cell theory are:
(i) All living organisms are composed of cells and products of the cells.
(ii) All cells arise from pre-existing cells.
In 1838, Matthias Schleiden, a botanist, did research on plants and discovered that all plants are made of cells.
At around the same time, Theodore Schwann, a zoologist , studied different types of animal cells and concluded that they are also composed of cells.
Schleiden and Schwann together gave the cell theory.
But a major drawback of this theory was that it could not explain how new cells are formed.
Rudolf Virchow, on careful analysis, observed that new cells are formed from pre-existing cells( Omnis cellula-e cellula).
Virchow gave the final shape to the cell theory based on the following points:
All living organisms are composed of cells and products of cells.
All cells arise from pre-existing cells.
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Which amino acid generates the following product in a transamination reaction with -ketoglutarate?
In a transamination process with alpha-ketoglutarate, the amino acid leucine produces the following product.
With an example, define transamination reaction.The most typical reaction type that is catalysed by PLP-dependent enzymes is transamination. Living cells reversibly convert the amino group from an amine (like -aminobutyrate) or alpha-amino acid (like aspartate) to a alpha-keto carboxylic acid (like alpha-ketoglutarate).This is a crucial biological activity.Where do reactions of transamination take place?A number of tissues, including the kidney, small intestine, muscles, and adipose tissue, participate in the metabolism of amino acids, although the liver is the primary location.
What resulted from the transamination reaction?The availability of -keto acids affects the outcome of transamination processes. The end products are often either alanine, aspartate, or glutamate since the metabolism of fuels produces the matching alpha-keto acids.learn more about transamination process here
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Evolution of shorter legs in anole lizards placed on small, hurricane-scrubbed islands is an example of which type of evolution?.
This type of evolution is known as Microevolution.
What is the meaning of evolution?Evolution is the descent modification of preexisting species. It is a process species adapt over time. There are two types of evolution: Microevolution and macroevolution.
Microevolution is defined as the changes in the frequency of the gene in the population. Several factors affect evolution geneflow, including natural selection, mutation, and genetic drift.
Pesticide resistance is one example of macroevolution. Microevolution is frequently seen in visible forms of evolution, such as antibiotic-resistant variable strains. Microevolution is the change in gene frequency that occur over time. Alleles are different forms of a gene. Allele frequencies are usually represented as a percentage.
This type of evolution is known as Microevolution.
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When organisms leave the group they were born into and join another group, this can alter allele frequencies in the new group. What mechanism is this?.
The answer to the question is gene flow.
What is gene flow?Gene flow, sometimes referred to as gene migration, geneflow, and allele flow in population genetics, is the exchange of genetic material between populations. A population can be deemed to be a single effective population if two populations have equal allele frequencies and the rate of gene flow is high enough. It has been demonstrated that all it takes is "one migrant each generation" to stop populations from drifting apart. Depending on how severe the selection pressure is, populations can diverge even when they are exchanging alleles. The exchange of genetic variety between populations is facilitated through gene flow. By altering allele frequencies, migrants affect how genetic variation is distributed among populations.
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record the growth of the organisms over another ten-week period, this time in
water that averaged 25°C
After recording the growth of the organisms over another ten-week period, this time in water that averaged 25°C the temperature of the medium causes the growth graph to fluctuate up and down.
The line climbs upward due to the existence of the optimal temperature for the growth of that organism, which grows best in the temperature range of 15°C to 25°C.
The graph swings downward because the water temperature is unsuitable for the growth of that organism, which grows best in the temperature range of 5°C to 15°C.
We can infer that the growth rate changes owing to water temperature as the organism grows best in the 25°C to 35°C temperature range and the graph swings downward because the water temperature is not conducive to its growth.
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All living things require an outside source of materials and energy. the sum total of all chemical reactions that occur within a cell to provide these materials and energy is called?
All living things require an outside source of materials and energy. The sum total of all chemical reactions that occur within a cell to provide these materials and energy is called metabolism.
Energy is the ability to perform work. In an organism's body energy is required to perform each and every processes inside the body. In eukaryotic organisms this energy is derived by the mitochondria. In humans and various other species, the major source of energy is ATP.
Metabolism is the sum total of all the reactions taking place inside the body. These reactions can be anabolic or catabolic. The anabolic reaction involve the formation of larger molecules from the smaller ones. The catabolic reactions involve the breakdown of larger molecules into smaller ones.
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There are three swellings that occur at the anterior end of a fluid-filled tube in the developing embryo. these three swellings eventually develop into the adult:__________
There are three swellings that occur at the anterior end of a fluid-filled tube in the developing embryo. These three swellings eventually develop into the adult forebrain, midbrain, and hindbrain.
What is brain?Brain is defined as an important organ of body which controls all the functions of the body and have command on all the body organs.
The outermost part of brain is known as dura mater which consist of a strong membrane layering and it is thick located just beneath the skull and vertebral column. The outermost part or cerebrum has billions of neurons and glia that are responsible for the formation of cerebral cortex, the outermost part.
Whenever body stuck in a dangerous situation, the signal in the form of information is conveyed to brain and the particular part that receives the signal is known as amygdala.
Therefore, These three swellings eventually develop into the adult forebrain, midbrain, and hindbrain.
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Found in the urinary bladder, __________ resembles __________, but the apical cells are rounded, not flattened.
Transitional epithelium found in the bladder resembles stratified squamous epithelium, but the apical cells are rounded, not flattened.
Transitional epithelium- The bladder's lining consists of the transitional epithelium. These structures make up the urinary bladder tissues and are in charge of giving the bladder the necessary tensile properties. This is because the building serves as the body's organ for storing pee.
Squamous Epithelium- Multiple layers of epithelium are used to create the stratified squamous epithelium, and squamous cells are used to create the top epithelial structure.
Since the stratified squamous epithelium contains flattened cells on the epithelial area, the transitional epithelium differs in having apical cells with rounded tops.
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On easter island, the most isolated piece of inhabited land in the world, the loss of timber due to the cutting down of trees by humans resulted in?
All of the above ( termination of stone carving around AD 1680, cessation of canoe manufacture, soil erosion, lower crop yields.)
What are the effects of deforestation?For indigenous people, losing trees and other vegetation can result in a number of problems, such as climate change, desertification, soil erosion, less harvests, flooding, and an increase in greenhouse gases in the atmosphere.What impact does tree removal have on the soil?Due to the loss of trees, whose roots anchor the soil, soil erosion is a prevalent issue.Good soils are few, and once they have been stripped away by the frequent, heavy rains, they are quickly washed away.How does the cutting down of trees affect global warming?Carbon is stored in plants and forests. When they are damaged or completely destroyed, for example by fire - a process known as deforestation - this stored carbon has the potential to be released back by increasing atmospheric carbon dioxide, which changes the climate.To learn more about deforestation visit:
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Mitochondria are essentially the same in all eukaryotes, including plants, animals, and fungi. based on this observation, how were mitochondria most likely acquired?
Mitochondria are postulated to have been primarily acquired via endosymbiosis.
What is endosymbiosis?Endosymbiosis is a process in which the association of a symbiont within a host organism occurs, it had been postulated that the eukaryotic cell as it is known was due to the association of several organisms within oneself and that each of these contributed abilities differentiated within the cell, and this is how organelles such as mitochondria or chloroplasts were then obtained. This postulate is known as the endosymbiotic origin theory of eukaryotes.
Thanks to endosymbiosis, the eukaryotic cell as we know it can carry out processes such as cellular respiration or photosynthesis.
The reasons why it is believed that the mitochondria come from the process of endosymbiosis is that it has its own DNA that is different from the nuclear DNA, showing that it has a different origin from the rest of the cell and also that it has its own replication material, which is different from other cells.
Therefore, we can confirm that mitochondria are postulated to have been primarily acquired via endosymbiosis.
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How is the study of life span human development related to life expectancy?
Life expectancy provides a framework for timing about stages and periods of life.
What does "life span" mean?life span: the amount of time elapsed between an organism's conception and eventual demise.The definition of life expectancy:The average number of years a person who reaches a certain age might expect to live is their life expectancy. Estimates of life expectancy from the National Center for Health Statistics offer a trustworthy overview of mortality and population health in the United States.Why is this crucial?A common metric for assessing a community's general health is life expectancy. Age-specific health is measured by life expectancy at birth. Trends in mortality are frequently described in terms of changes in life expectancy.To learn more about life expectancy visit:
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Is it possible to disrupt the structure of skin cells without disrupting the structure of the skin?
No
It is not possible to disrupt the structure of skin cells without disrupting the structure of the skin.
The meaning of skin structure:The epidermis, dermis, and subcutaneous layer are its three primary layers. The epidermis is an elastic outer layer that regenerates continuously. The primary cells of the epidermis, created through cell division at its base, are keratinocytes.How are skin cells harmed?When the skin is harmed by extreme heat, radiation, electricity, or chemicals, a burn occurs. Skin cells die as a result of the damage, which can cause a significant loss of fluid. Dehydration, electrolyte imbalance, renal failure, and circulatory failure come next, all of which are potentially lethal.How does a skin cell's structure impact how it works?These cells' structure allows a new stratum granulosum barrier of three-way tight junction connections to develop between them and the surrounding cells.To learn more about skin cells visit:
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The concave surface of the ulna that wraps around the trochlea of the humerus is the?
The olecranon fossa, which is located above the trochlea of the humeral condyle on the central aspect of the posterior humerus, enables the humerus to accept the olecranon of the ulna when it is extended. The trochlea notch, which is shaped like a C, is carved out of the olecranon, which is the proximal end of the ulna.
The ulna and humerus where they articulate?Elbow
The diaphysis, a long bony shaft with hyaline cartilage caps at either end, is how the ulna initially appears at birth. The distal epiphysis, a small bony cap that forms on the end of the hyaline by the wrist around age 4, starts to ossify around this time.
On the back of the humerus, above the trochlea, is the olecranon fossa, a deep triangular depression. When the forearm is extended, it gives the olecranon of the ulna room to move. lecranon fossa
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What is the term that refers to the recognizable traits associated with specific genetic information stored in an individual base sequence?
The term "phenotype" refers to the distinguishable characteristics connected to particular genetic information encoded in a single base sequence.
Describe phenotypes.The observable qualities or characteristics of an organism that are the outcome of the interplay between genes and environmental variables are referred to as phenotypes. These characteristics include outward characteristics and other aspects that are visible to us. An organism's physiological, biochemical, and behavioral characteristics make up its phenotype.
Phenotypes include things like height, wing length, and hair color. In addition to measurable traits that may be observed and tested in a lab, phenotypes also include blood cell or hormone levels.
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Phenotype is that the term that refers to the recognizable traits associated with specific genetic information stored in an individual base sequence.
What is a Phenotype?
A Phenotype is defined as the observable traits or characteristics of an organism which is the result of the interaction of genes and environmental factors.
These traits include physical appearances and other traits that we will observe. The phenotype of an organism includes its physiological, biochemical, and behavioral properties.
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Most cells are relatively small for reasons related to the of substances into and out of cells. True or false?.
It is True to say that most cells are tiny due to the diffusion of chemicals into and out of cells.
What three forms of diffusion are there?Simple diffusion is the movement of ions or molecules from a high concentration area to a low concentration area.
The moving components in osmosis are water molecules. Through a semi-permeable barrier, they travel from a region of low solute concentration to a region of high solute concentration.
The passage of hydrophilic ions or molecules over the plasma membrane is known as facilitated diffusion. The distinction is that transport proteins enhance the diffusion.
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Imagine a person ingests some food that causes them to become ill and have symptoms such as a diarrhea and fever. what kind of pathogenic bacterial poison could the person have been exposed to?
It might be a case of food poisoning caused by bacteria like E.coli.
A disease called food poisoning caused by eating spoiled food. Most people recover within a few days without treatment and are usually not dangerous. Food is usually contaminated with bacteria such as salmonella and E. coli, or viruses such as norovirus in the case of food poisoning. Symptoms of food poisoning usually appear 1 to 2 days after eating contaminated food. It can occur after a few weeks. Rest and hydration are recommended until you feel better to avoid dehydration. Make sure you drink enough water, even if you can only swallow it. Eat whenever you feel hungry, but start with small, light meals.
Therefore, E.coli causes food poisoning in the patient.
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What organelle consists of a series of connected spaces termed cisternae and is extremely embedded with ribosomes?
The organelle consists of a series of connected spaces termed cisternae and is extremely embedded with ribosomes are endoplasmic reticulum.
The endoplasmic reticulum is an important membrane bound organelle that have functions of protein folding and transportation.
It can be divided into two types- smooth endoplasmic reticulum and rough endoplasmic reticulum. The smooth ER is associated with formation and transportation of lipids.
The rough ER is associated with formation and transportation of proteins and have ribosomes in its surface that gives the rough appearance.
It consist of series of connected space called cisternae which have integral role in packaging and modification of protein and lipids. It is flattened tube like apparatus.
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Which factor is most instrumental to the optimal health and performance of the digestive system?
Adequate sleep is most instrumental to the optimal health and performance of the digestive system.
How sleep affect digestive system ?Stress that affects the intestines can increase as a result of lack of sleep.
Bloating, inflammation, stomach pains, food allergies, and alterations to the gut flora are just a few of the problems that can result from this.
Digestive system :The digestive system is made up of the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus. Salivary glands, the liver, gallbladder, and the pancreas are also included since they produce digestive juices and enzymes that aid the body in breaking down food and liquids.
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Which membrane protein is not integral to the plasma membrane and is often attached to the cytoskeleton?.
Peripheral membrane protein is not integral to the plasma membrane and is often attached to the cytoskeleton.
What does cytoskeleton mean?The cytoskeleton is a framework that aids in maintaining the internal order and shape of cells. Additionally, it provides mechanical support, enabling cells to carry out essential functions including division and motility.. There isn't just one cytoskeletal element.
What three types of cytoskeletons are there?Actin filaments, microtubules, and intermediate filaments are the three main types of filaments that make up the cytoskeleton.
What is the purpose of the cytoskeleton?The cytoskeleton is present throughout the cytoplasm of the cell and regulates a variety of significant processes. It provides the cell with support and aids in maintaining its form. The cytoskeleton holds a variety of cellular organelles in place. It promotes the development of vacuoles.
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viruses are specific to a particular host due to their , which is composed of subunits, or the , which is formed from glycoprotein.
Viruses are specific to a particular host due to their capsid, which is composed of protein subunits, or the spike, which is formed from glycoprotein.
Capsid is the coat the encloses the genetic material. The capsid if made up of protein subunits. These subunits are repetitive in nature and are called protomers. The capsid not only protects the genetic material of the virus, but also aids in its transport to the host cell.
Spike proteins are actually glycoproteins that may occur in the dimeric or trimeric form. One single spike protein is referred to as peplomer. The major role of the spike protein is to help the virus enter into the host cell.
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An iris diaphragm is a set of overlapping metal plates that expand out to allow more light or fold in on each other to reduce the amount of light.
A. true
B. false
It is true that an iris diaphragm is a set of overlapping metal plates that expand out to allow more light or fold in on each other to reduce the amount of light.
What is Iris Diaphragm?Iris Diaphragm is an adjustable diaphragm of thin opaque plates that can change the diameter of a central opening usually to regulate the aperture of a lens. It is an adjustable shutter that allows us to adjust the amount of light passing through the condenser.
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Carbohydrates help to spare __________ during exercise?
a) fat
b) protein
c) minerals
d) water
Carbohydrates help to spare fat during exercise.
What is function of carbohydrate?
Carbohydrates provide the body with glucose, which is converted to energy used to support bodily functions and physical activity.
Complex carbohydrates are an efficient source of energy that fuels muscle contractions.
The main source of energy during exercise comes from carbohydrate and fats.
Carbohydrates being the major source of energy during exercise helps to spare fat.
Thus, carbohydrates help to spare fat during exercise.
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Moving from superficial to deep in a bone, the parts of the bone would be encountered in which sequence?
Moving from superficial to deep in a bone, the parts of the bone that would be encountered in a sequence periosteum, endosteum, and medullary cavity.
What are the functions of the bones?The functions of the bones are as follows:
They provide shape and support for the body.It also protects some organs of the body.Bone serves as a storage site for minerals.Production of blood cells. They store ions and maintain endocrine regulations.While moving from the outside to the inside of the bones, we undergo numerous layers of the bones like the periosteum which is the dense, tough, outer shell that contains blood vessels and nerves.
Endosteum is the compact layer of tissues that is hard and surrounded by the smooth layer that protects the tissues. The medullary cavity is also known as cancellous tissue which is porous and honeycombed material inside the bones.
Therefore, the sequence of the bone parts from superficial to deep is the periosteum, endosteum, and medullary cavity.
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The hormone primarily responsible for contraction of the gallbladder and release of bile into the duodenum is?
The hormone primarily responsible for the contraction of the gallbladder and the release of bile into the duodenum is cholecystokinin.
Cholecystokinin also called pancreozymins is produced in the duodenum which is a part of the small intestine by the cells known as enteroendocrine cells and its secretion is stimulated by the introduction of fatty acids and amino acids. This hormone is involved in the process of digestion.
Cholecystokinin causes the contraction of the gallbladder which then releases bile and enzymes into the small intestine. Bile salts and other enzymes are involved in the breakdown of fats and proteins so that they can be absorbed in the small intestine. During the digestion process, this hormone also slows down gastric emptying and controls bowel motility.
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