The sorting that occurs during blank Meiosis 1 separates homologues from each other. Meiosis uses a two-step division mechanism to achieve these goals.
During the initial round of cell division, known as meiosis I, homologue pairs split apart. Sister chromatids split apart during meiosis II, the second round.
Disjunction describes the division of homologous chromosomes during anaphase I. Disjunction is a crucial component of the anaphase processes of mitosis and meiosis (I and II). Sister chromatids split and travel to the polar opposites of the cell during the anaphase of mitosis.
In prophase I of meiosis, homologous chromosomes are paired; they are then split apart in anaphase I, resulting in a halving of the number of chromosomes.
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what is the transfer of oxygen and carbon dioxide between the environment and the bloodstream in the lungs called?
The process of breathing involves the exchange of oxygen and carbon dioxide.
What is the term for the exchange of gases between the blood and the body's cells?The process through which gases are exchanged between blood and bodily tissues is called diffusion. Blood carries respiratory gas to every cell in the body. Even the most remote areas of the body's tissue are supplied with blood flow by tiny capillaries.
What does gas exchange mean between the blood and tissues and between the lungs and blood?The circulation receives oxygen from the lungs during gas exchange. The blood and lungs exchange carbon dioxide at the same time. This occurs in the lungs between a network of microscopic blood arteries known as capillaries and the alveoli.
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the enzymes that catalyze cellular reactions are macromolecules made of organic compounds composed of carbon, hydrogen, oxygen, and nitrogen. these types of macromolecules are known as –
Made of organic substances that contain carbon, hydrogen, oxygen, and nitrogen. These macromolecules fall under the category of proteins.
Which definition of macromolecule is the most accurate?A protein or nucleic acid is an example of a macromolecule, which is a very big molecule crucial to biophysical processes. It consists of thousands of atoms that are covalently linked. Many macromolecules are made up of smaller molecules known as monomers in polymer form.
In the body, what are macromolecules?Built from smaller organic molecules, biological macromolecules are substantial molecules required for life. Proteins, lipids, carbohydrates, and nucleic acids make up the four main groups of biological macromolecules; each is a vital part of the cell and has a variety of jobs to do.
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Imagine a transmembrane molecule that lies in the plasma membrane and acts as a receptor for an extracellular signaling molecule. When the ligand-binding domain is inserted into the er during synthesis of this transmembrane molecule, will it lie on the lumen side of the er or the cytoplasm side?.
The ER lumen will contain the ligand-binding domain, which will also travel through the Golgi in the same direction.
The fusion protein-containing vesicle will leave the trans Golgi network in the last stage of transport and fuse with the plasma membrane, exposing the vesicle lumen to the outside of the cell.
Additionally, given that glycosylation occurs in the ER and Golgi lumen, any oligosaccharide subunits that may have been added to the protein will be found on its extracellular domain.
The other chemicals will be linked to peripheral proteins in an extracellular environment. Peripheral proteins can bind to other molecules even when they lack a transmembrane domain.
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Where is a complete copy of DNA found in an animal's body?
A. In nearly every cell nucleus
B. Outside the nucleus of every cell
C. Only in specialized cells
D. Only in unspecialized cells
Answer: A
Explanation: it is contained within each cell
Write 1 paragraph summary of 'Habitat Before Conservation
Answer: a management practice that seeks to conserve, protect and restore habitats and prevent species extinction, fragmentation or reduction in range.
Explanation: Its correct :)
Experiments with genetically altered mice showed that the mice would consume abnormally high amounts of bitter-tasting compounds in water after their _____.
Experiments with genetically altered mice displayed that the mice consumed an unusually high amount of bitter taste compounds in water after their sweet taste cells were altered to express receptors for bitter tastants.
It was also deduced from this experiment that the sensation of taste depends solely on which taste cell is activated.
Studies using genetically modified mice showed that when their sweet taste cells was changed to produce receptors for bitter tastings, the animals drank an extraordinarily high amount of such bitter taste chemicals from water.
The expression of bitter taste buds in sweet-taste cells suggests that the taste perception is solely dependent on the taste cell that was stimulated.
The correct answer will be option (d).
The question is incomplete. the complete question is:-
Experiments with genetically altered mice displayed that the mice consumed an unusually high amount of bitter taste compounds in water after their:
(1) Hormone receptors for digestive hormones were removed or eliminated, displaying that bitter taste is strengthened by digestive responses,
(2) Salt taste cells were altered to express receptors for bitter tastants, proposing that animals have an uncontrolled appetite for salt,
(3) Visual sense was diminished or eliminated, proposing that mice grasp visual signals regarding bitter taste,
(4) Sweet taste cells were altered to express receptors for bitter tastants, proposing that the sensation of taste depends solely on which taste cell is activated.
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Which organic compounds are needed for the synthesis of the plasma membrane, contain a large amount of stored energy, and have been linked to cardiovascular diseases?.
The organic compounds that needed for the synthesis of the plasma membrane, contain a large amount of stored energy and linked to cardiovascular disease is LIPID.
Lipid and its functionLipid is an organic compound which is insoluble in water. It is including fats and oils (triglycerides), phospholipids, waxes and steroids. Each type of lipid contribute to some vital processes, however associated with a certain disease.
Lipids are an essential structure of the plasma membrane. According to the fluid mosaic model, the plasma membrane is a mosaic of carbohydrate, lipid and proteins. The plasma membrane require lipids as a semi-permeable barrier between a cell and its environment. There are 3 types of membrane lipid molecules : phospholipids, cholesterol and glycolipids. A phospholipid is made of glycerol, 2 fatty acid tails and phosphate-linked head group. These structures form two layers with its tails pointing inward because they are amphipathic. This arrangement called a phospholipid bilayer. Within the body, lipids function as an energy reserve. Lipid provide 9 calories per gram, so they contain more energy than carbohydrates or protein which has 4 calories per gram. That’s why low-fat diets are recommended for weight loss. Some of lipids are healthier than others. Like unsaturated fats, may provide some health benefits but saturated fats and trans fats are harmful to our health. Eating higher amount of this fats is linked to elevated LDL level which increases risk of cardiovascular disease.Learn more about cell membrane by clicking this linkhttps://brainly.com/question/14871353
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in rwanda, there are more young children than teenagers, and more teenagers than adults. this age structure indicates a population that
In Rwanda, there are more young children than teenagers and also more teenagers than adults, then this age structure indicates a population that will double in 30 years.
What is the age structure of population?The age structure of a population is defined as the proportionate numbers of people in different age categories in a population for a defined time. It is a natural characteristic of a population in a region and the age structure is closely related to the birth rate, death rate and migration of a population.
Countries with lower median age have higher population growth rates. Lower-income countries have a lower median age.
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pls help and ill mark brainly
Students are using cubes to model how surface area to volume ratio impacts cellular homeostasis. The students have created two models of equal size. Model A is one solid cube. Model B is a cube composed of nine smaller cubes. Each cube represents a cell. Which cube would have difficulty maintaining homeostasis?
A) Model A because the larger surface area to volume ratio of the cell makes moving
nutrients and waste into and out of the cell more difficult.
B) Model B because the smaller surface area to volume ratio of the cells makes
moving nutrients and waste into and out of the cells more difficult.
C) Model B because the larger surface area to volume ratio of the cells makes
moving nutrients and waste into and out of the cells more difficult.
D) Model A because the smaller surface area to volume ratio of the cell makes moving nutrients and waste into and out of the cell more difficult.
The cube that would have difficulty for maintaining homeostasis is Model A because the smaller surface area to volume ratio of the cell makes moving nutrients and waste into and out of the cell more difficult (Option D).
What is the cellular homeostatic state?The cellular homeostatic state refers to the state of internal equilibrium in the cell which is mainly due to the ability to perform all metabolic activities such as the intake of nutrients and elimination of waste products.
A higher number of smaller cell increase the surface volume cell ratio, thereby many cells have more chances to maintain homeostasis than a larger single cell.
Therefore, with this data, we can see that the cellular homeostatic state is based on a state of internal equilibrium which can be reached by having a suitable surface volume ratio in multicellular organisms.
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which of these biomes receives the least amount of rainfall, and therefore has low primary production, nutrient-poor soil, and plant species that are adapted for water storage?
Deserts receive the least amounts of rain, which results in low primary output, poor soil fertility, and native species that are specialized for water storage.
What's an example of a biome?Three types of biomes—territorial, freshwater, and marine—can be distinguished. Grasslands, deserts, and tropical woods all belong to the terrestrial biome category. Large lakes, tropical and subtropical coastal rivers, and temperate coastal rivers are examples of freshwater biomes. Polar freshwaters are another.
The most significant biome is, what?The most significant of all biomes is certainly the aquatic one. A significant natural resource is their medium, water. Numerous species spend all or a portion of their lives in water, which is the source of all life and the means by which it is sustained. Our drinking water and water for agriculture irrigation come from freshwater biomes.
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mary anne warren says that human lives have greater intrinsic value than animal lives because human lives are worth more to their possessors.
Compared to nonhuman animals, human life has a higher intrinsic value. Because their owners value human lives more, this is the case.
Warren contends that animal rights are inferior to human rights because people are intelligent while animals are not. is, everyone who is capable of feeling anything, such as feelings of happiness or fulfillment as well as pain, suffering, or annoyance.
In other words, they are traits that are "intrinsic" to the person rather than being influenced by their environment—the genetic, physiological, and pathological aspects of an individual are among these intrinsic factors.
Why are people considered to be morally superior to animals?Why should people have more moral standing than other animals? According to Immanuel Kant, a person's autonomy and rationality confer moral worth on them. The same idea was maintained by Aristotle. So maybe we have higher moral value than other creatures since we have autonomy and the ability to reason.
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Decide whether the statements below about the body's first line of defence are true or false. If you think that they are TRUE, record the letter in the answer. (Use upper case, no commas and keep them in the order of the statements).
A) Most pathogens have to get inside a person's body to spread infection. Once in the body, they have ideal living conditions: food, water, warmth.
B) The skin is the body's physical natural barrier. It covers part of the body and protects it from physical damage, microbe infection, and dehydration.
C) One form of defence is the hydrochloric acid in our lungs, which destroys microorganisms when swallowed and protects against food poisoning.
D) The body has defences in place to try to stop the invading pathogens. These include the skin, digestive system, and respiratory system.
*2 points
Answer:
D) The body has defences in place to try to stop the invading pathogens. These include the skin, digestive system, and respiratory system.
The presence of only one X chromosome in each body cell of a human female produces a condition known as Turner syndrome. This condition likely results from the process called
A. polyploidy
B. crossing-over
C. nondisjunction
D. hybridization
Answer:
C. nondisjunction
Explanation:
Turner syndrome likely results from the process called nondisjunction. Nondisjunction refers to the failure of chromosomes to separate correctly during meiosis, the process of cell division that occurs during the production of eggs and sperm. If nondisjunction occurs during the production of eggs, it can result in eggs with an abnormal number of chromosomes. If one of these eggs is fertilized by a sperm with a normal complement of chromosomes, the resulting embryo will have an abnormal number of chromosomes.
which would be the best genetic marker to select for the most number of recombinants and kill the f- strain?
The strain brought on by steric repulsion between A and B is then known as F-strain. B-strain is the strain that A's complexation causes in B due to changes in its geometry.
What is F strain?The C-N-C bond angle contracts when it forms a complex with an acid (A), and the B-strain is the result of the enhanced repulsive forces between the methyl groups (inside B). Steric repulsion between B and A is the F-strain.
A bacterium having a conjugative plasmid (such as the F-factor) incorporated into its chromosomal DNA is known as a high-frequency recombination cell (Hfr cell), sometimes known as a Hfr strain.
Homologous recombination is how the plasmid is incorporated into the cell's chromosome. Another name for a conjugative plasmid that can integrate chromosomes is an episome (a segment of DNA that can exist as a plasmid or become integrated into the chromosome).
Therefore, The strain brought on by steric repulsion between A and B is then known as F-strain. B-strain is the strain that A's complexation causes in B due to changes in its geometry.
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In 1988, james hansen projected future warming trends. He used 3 different scenarios, identified as a, b, and c. Each represented different levels of greenhouse gas emissions. All three indicated a strong cause and effect relationship between observed temperatures and human emissions of greenhouse gases into the atmosphere. Greenhouse gas emissions are at the center of almost all climate change concerns. What are the likely effects of increasing greenhouse gas emissions on the ecosystem? select all that apply.
Answer:
extinction
Explanation:
depletion in some of the sources of energy
Which of the following methods explains how the atmosphere close to the ground warms up due to land and
air particles bouncing off one another and transferring heat?
O Composition
O Conduction
O Convection
O Radiation
When air particles absorb heat from ground particles, convection occurs and the earth warms the air above it.
How does energy get from the earth to the atmosphere?
Energy is transported from the Earth's surface to the atmosphere in a variety of processes, including radiation, conduction, and convection. Conduction is one of the three main ways that heat energy is transferred. The other two ways that heat is transmitted are through radiation and convection.
The heated surface of the earth heats both the air it comes into touch with and the air above it, creating convective air currents. As a result of heating, the atmosphere expands, reducing atmospheric pressure everywhere. The cooler regions' thick atmosphere causes air from those areas to start moving toward the warmer regions, producing "winds."
As a result, Convection is the appropriate response.
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What are 8 mineral rocks that make up the earths crust
Answer: 1. Quartz
2. Potassium feldspars
3. Pyroxenes
4. Plagioclase feldspars
5. Nonsilicates
6. Clays
7. Mica
8. Amphiboles
please help with tis i believe its attached below due in 3 days MRS>COGLIATIS CLASS
Answer:im pretty sure the answer is 3
Explanation:
look at the e,d postion
Answer: The post won't show.
Explanation:
Where would antibodies be found in the blood?
A. Dissolved in plasma
B. Surface of platelets
C. Surface of erythrocyte
Antibodies be found in Dissolved in plasma
Where do the antibodies reside in the blood?Proteins called antibodies are present in plasma. They are a component of your body's defense mechanisms. Your immune system is notified when they detect alien objects, such as pathogens, and it then eliminates them.Plasma contains antibodies, which are proteins. The natural defenses in your body include them. As soon as they detect foreign objects, such as pathogens, they notify your immune system, which then eliminates them. On the outer layer of red blood cells, antigens are protein molecules.The plasma, the upper liquid layer, is composed primarily of water (90%) and other compounds necessary for osmotic load regulation, pH regulation, and bodily protection. The coagulation factors and antibodies are also present in the plasma.To learn more about antibodies refer to:
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motor control is initiated by lower motor neurons and transmitted to upper motor neurons by interneurons situated within the cns.
Motor control is initiated by lower motor neurons and transmitted to upper motor neurons by interneurons situated within the CNS, Upper motor neurons directly contact and stimulate skeletal muscle fibers to contract.
Neurons use electrical impulses and chemical signals to transmit facts among one-of-a-kind areas of the mind and between the mind and the relaxation of the apprehensive gadget.
Neurons (also known as neurons or nerve cells) are the fundamental gadgets of the brain and fearful device, the cells liable for receiving sensory input from the outside globally, sending motor commands to our muscular tissues, and for transforming and relaying electrical alerts at every step in between.
For the spinal cord even though, we will say that there are 3 sorts of neurons: sensory, motor, and interneurons.
Sensory neurons. ...
Motor neurons. ...
Interneurons. ...
Neurons inside the mind.
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Organism a is eukaryotic, unicellular, and lacks a cell wall. Organism b is eukaryotic, multicellular, has cell walls, and is autotrophic. In which kingdoms should these organisms be classified?.
Kingdom Plantae contains species that are autotrophs and have a cellulose cell wall, whereas kingdom Animalia contains organisms that are heterotrophs and lack a cell wall. C is the right response.
An organism that consumes other plants or animals for energy and nutrients is referred to as a heterotroph. The word comes from the Greek terms hetero, which means "other," and trope, which means "nourishment." Based on how they receive their energy and nutrients, organisms are divided into two general categories: heterotrophs and autotrophs. Because they can manufacture their own food from basic materials and energy, autotrophs are referred to as producers. Examples include trees, algae, and some bacterial species. Heterotrophs are referred to as consumers because they eat other consumers or producers. Heterotrophs include animals like dogs, birds, fish, and people.
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Cloud cover is the percent of Earth's surface covered by clouds! Cloud cover may increase due to an increase in cosmic ray flux (the number of high-energy particles from space that reaches Earth). Figure 1 shows the relationship between low cloud cover and relative cosmic ray flux (RCRF). What was the monthly average cloud cover in January of 1990?
a. 20.1%
b. 7%
c. 19.25%
d. 3.5%
Figure 1 shows the relationship between low cloud cover and relative cosmic ray flux (RCRF) therefore the monthly average cloud cover in January of 1990 is 20.1% and is therefore denoted as option A.
What is a Cloud?
This is referred to as a mass of water drops or ice crystals suspended in the atmosphere and they form when water condenses in the sky.
Cloud cover may increase due to an increase in cosmic ray flux in which the diagram shows the relationship between the two set of parameters in different time frame or periods.
From the diagram , we can deduce that the monthly average cloud cover in January of 1990 is 20.1% which is derived when the point is traced to the readings on the graph and is therefore the reason why option A was chosen aas the correct answer.
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Organism a is eukaryotic, unicellular, and lacks a cell wall. Organism b is eukaryotic, multicellular, has cell walls, and is autotrophic. In which kingdoms should these organisms be classified?.
The Kingdom Animalia stands apart among them due to the presence of multicellular bodies, a heterotrophic source of nutrition, eukaryotic cells, and cells without a cell wall.
The five Kingdom system has been used to group all creatures into these five categories. The Kingdom Animalia stands out among them due to the presence of multicellular organisms, a heterotrophic mode of nutrition, eukaryotic cells, and cells without a cell wall.
Members of the kingdom Monera include unicellular prokaryotic BGA and bacteria. Algae, every type of protozoa, and eukaryotic unicellular organisms are all included in the Protista kingdom. The kingdom fungus includes multicellular heterotrophic eukaryotes with chitinous cell walls. Kingdom Plantae is home to autotrophic organisms with cellulose cell walls while kingdom Animalia is home to heterotrophic animals without one.
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Efficient production of eukaryotic proteins in E. coli may require all of the following except?
a.altered codon usage within the heterologous sequences to approximate the codon bias in E. coli
b.an E. coli expression vector with a Shine- Dalgarno sequence for efficient translation
c.a negative selectable marker to select against nonhomologous recombination events
d.The use of cDNAs as eukaryotic transgenes an E. coli expression vector with a promoter sequence that binds RNA polymerase D
(C). A negative marker to select against nonhomologous recombination events Efficient production of eukaryotic proteins in E. coli.
E. coli can it produce eukaryotic proteins?The restricted function of E. coli's eukaryotic post-translational machinery is seen as a major hindrance to the production of eukaryotic phosphoproteins, such as serine/threonine/tyrosine protein kinases.
Which proteins are produced by E. coli?The organism One of the most popular hosts for the production of recombinant proteins is Escherichia coli (Rosano and Ceccarelli, 2014). Even though E. coli's cytoplasm is where the majority of recombinant proteins are made, the periplasm is frequently where disulfide-containing recombinant proteins are made.
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some dried peas and beans, such as lentils, are nutrient-dense sources of folate. what other nutritional benefits do beans provide?
In addition to supporting many regular metabolic processes, iron and folate are crucial for preventing anaemias. For proper muscle and nerve function, you need potassium and magnesium.
What role do the nerves play that is most crucial?Your nervous system controls how your body functions. This system, which is based in your brain, regulates your movements, thoughts, and automatic responses to the surroundings. It also regulates other other body processes and systems, including digestion, breathing, and sexual development (puberty).
Which of the four kinds of nerves are they?Based on how they perform, the three different types or nerves inside the human body are divided. The nerve impulses, motor nerves, and mixed nerves are those.
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Speckled chicken, created by parent with feather of two different color (ome black and ome White). What are thee chicken an example of?
Hello Kevin,
Here is my answer to your wonderful question down below.
Answer:
Speckled chickens are an example of genetic diversity and codominance.
Explanation:
Meiosis allows genetic diversity since the mother and father have different-colored feathers. If the two mate, then the outcome of the chicken will either be fully black, fully white, or speckled. The chance of having a speckled chicken from parents that are different colors is high.
If you are talking about genetics, codominance refers to a kind of inheritance in which two variants (alleles) of the same gene are expressed separately to produce distinct features in an organism.
I hope you find this explanation and answer useful.
Warm Regards, and Happy Holidays!
Check every statement about cells that is true. Cells come in different shapes and sizes. All cells perform the same function in a multicellular organism. Cells are considered the basic structural unit of life. Cells are found in every living thing. Check every statement about the use of energy by living things that is true. Plants perform chemical reactions that require energy. Animals can use energy from the sun to produce their own food. Plants receive their energy from water in the soil. Animals can receive their energy by consuming plants or other animals.
The correct statement about cells are:
Cells come in different shapes and sizes.
Cells are considered the basic structural unit of life.
Cells are found in every living thing.
What are cells ?Prokaryotic cells lack a nucleus but still have a nucleoid region, while eukaryotic cells do. Cells fall into either of these two categories. In contrast to eukaryotes, which can be either single-celled or multicellular, prokaryotes are single-celled organisms.
The smallest unit of life in biology, comprising all living things as well as the body's tissues. The cell membrane, nucleus, and cytoplasm are the three major structural components of a cell. A cell's membrane, which encloses it and regulates what enters and leaves it, controls the flow of chemicals.
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Which is most likely an example of a heat source?
1. Lake Ontario on a clear fall night
2. an iceberg in the North Atlantic Ocean
3. a desert waterhole on a sunny summer day
4. a Rocky Mountain glacier in August
Answer:
I feel its no. 3 a desert waterhole on a sunny summer day
approximately what percentage of the total blood oxygen is bound to hemoglobin instead of dissolved in plasma?
One form of oxygen found in blood is dissolved in plasma and RBC water, accounting for about 2% of the total, while the other form, reversibly linked to hemoglobin, accounts for about 98% of the total.
How much oxygen is carried in plasma that is dissolved and bound to hemoglobin?Only 2% of the total oxygen carried by the blood is dissolved in the plasma directly; the majority, about 98%, is linked to hemoglobin. [6] A heme group with iron linked to a polypeptide chain makes up each of the four subunits of the metalloprotein known as hemoglobin.
How much oxygen is transported as a dissolved gas through plasma?In the blood, oxygen is delivered in two different ways: The plasma contains a minor amount of dissolved oxygen (1.5 percent). 98.5 percent of the oxygen carried by the blood is attached to the red blood cell protein hemoglobin.
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What type of cell is this