All epithelia have two surfaces, an apical surface and a basal surface, that differ in both structure and function. This property is called polarity. True or false?.

Answers

Answer 1

Answer:

This statement is true.

Explanation:

There are several epithelial tissues in the human body. They make up the majority of the tissue in the body. Safeguarding, secretion, ingestion, excretion, purification, transport, and sensory reception are just a few of the many tasks they carry out.

In epithelial tissue, there is relatively little intercellular matrix and the cells are closely packed together. 

Each epithelium has two surfaces: one would be revealed to the outside environment, which may include liquids like those found in the circulatory as well as urinary systems,  also gases such as in the respiratory system, or semisolids like those found in the digestive system. Other surface rests on the basal lamina, a structural layer.

The broad protection provided by epithelia that surround or line surfaces against diseases, physical harm, and poisons.

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Related Questions

What is genetic dominance?
A trait that, if present, is always expressed
A trait that requires a homozygous allele
A trait that requires a heterozygous allele
Controlled genetic information

Answers

I believe the answer is homozygous , because to be dominant u need the letters the same like TT, GG,RR etc..
The other person is incorrect! The answer would be “A trait that, if present, is always expressed”.
Yes there can be genotypes with both dominant alleles, but there can also be genotypes with one dominant allele and one recessive that still make the phenotype dominant.

Example:
R = Black Hair (Dominant)
r = Red Hair (Recessive)
RR = Black Hair (Homozygous)
Rr = Black Hair (Heterozygous)

The red pigmented protein in erythrocytes that transports oxygen and carbon dioxide is called.

Answers

The red pigmented protein in erythrocytes that transports oxygen and carbon dioxide is called hemoglobin.

What is hemoglobin?Red blood cells contain the protein hemoglobin, which transports oxygen. How much hemoglobin is in your blood is determined by the hemoglobin test. The most significant part of red blood cells is hemoglobin. It is made up of heme, a protein that binds oxygen. Carbon dioxide and oxygen are exchanged in the lungs.

What level of hemoglobin is concerning?The threshold for a high hemoglobin count differs slightly from one medical practice to another. It's generally defined as more than 16.6 grams (g) of hemoglobin per deciliter (dL) of blood for men and 15 g/dL for women.

What causes a decrease in hemoglobin?Low hemoglobin is most frequently caused by a diet that is inadequate in iron. Low hemoglobin levels can cause headaches, exhaustion, and pale complexion. Surgery, iron therapy, and iron supplementation are all options for treating low hemoglobin. It's also crucial to include more foods high in iron in your diet.

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identify what happens to light in this model of the greenhouse effect

Answers

The greenhouse effect is a natural phenomenon that occurs on Earth, it is a process that results from the capacity of the atmosphere to absorb and emit the different heat fluxes received from solar radiation.
This process begins with the arrival of radiation from the Sun to the Earth's surface, where most of the energy is received as ultraviolet radiation. Of this energy, part is absorbed by the atmosphere (ultraviolet radiation), another part is reflected by clouds, and another reaches the planet's surface (as visible light) by heating it. Once this radiation has reached and warmed the Earth's surface, the Earth returns this energy in the form of infrared radiation (thermal energy) and is reflected and sent back to the atmosphere and space.
It should be noted that thanks to this process the temperature of the planet is compatible with life as we know it. However, pollution activities due to the fossil burning fuels and deforestation by humans have intensified the effects of this phenomenon, being the main cause of global warming.

What is the instrument used for measuring blood?​

Answers

Answer:

To measure blood pressure, your doctor uses an instrument call a sphygmomanometer, which is more often referred to as a blood pressure cuff. The cuff is wrapped around your upper arm and inflated to stop the flow of blood in your artery.

Explanation:

Hope it helps you

scientists might make more inferences when drawing __.

Answers

Answer:

conclusions

Explanation:

Scientists might make more inferences when drawing conclusions. Their inferences are based on evidence that they collect during their investigations. Readers learn that scientists gather and interpret evidence and draw conclusions based on this evidence. Some scientists investigate things that they cannot observe directly.

Scientists might make more inferences when drawing conclusion.

What is conclusion?

The conclusion can be described as the term that is used to make the  reader understand  the purpose as well as the reason for the  research that is been carried out in the process.

It should be noted that A conclusion  can not only be seen as the summary of the work but the term that gives the point that are salient in the work so that  anyone that read the work can simply understand what the whole work is all about, however it do provide the  research problem but a synthesis of key points.

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What does the theory of evolution tell us about living things?

The environment can make them rapidly change over a short period of time.
They create fossils when they die.
Their environment makes them slowly change over time.
They can give us clues about extinct species.

Answers

Their environment makes them change overtime

Answer:

the enviorment changes overtime

Explanation:

Cell membrane is to cell as nuclear membrane is to-

Answers

Answer:

nucleus

Explanation:

The nucleus is surrounded by nuclear membrane, while the cell is surrounded by a cell membrane.

Archie, the ape in the Cleveland Zoo, has a cut on his hand which needs to heal. If his skin cells have 48 chromosomes each, how many will his daughter cells have after going through mitosis to heal his injury?

Answers

The number of daughter cells that Archie needs for the hand to heal will depend on the damaged tissues regardless of the amount of chromosomes of somatic cells (in this case skin cells have 48 chromosomes each, and daughter cells also have the same number).

What is mitosis?

Mitosis is a cell division process by which a multicellular organism generates somatic body cells in order to repair tissues and develop into an adult organism.

Mitosis generates for each cell division process two daughter cells that are genetically identical to the original parental cell which gives origin.

In conclusion, the number of daughter cells that Archie needs for the hand to heal will depend on the damaged tissues regardless of the amount of chromosomes of somatic cells (in this case skin cells have 48 chromosomes each, and daughter cells also have the same number).

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whats the likelilhood of a category 5 hurricane making landfall in Maryland?

Answers

Answer: The chances of that happening are so low because most natural disasters occur on the west coast or southeast by Florida

Contain proteins that carry out oxidative metabolism, a process whereby energy is extracted from macromolecules and converted to atp.

Answers

the answer is mitochondrion

The strength of a feedback loop is ________.

A. The sum of the positive link strengths in the loop

B. The sum of all the link strengths in the loop

C. The product of all the link strengths in the loop

D. The sum of the positive link strengths divided by the sum of the negative link strengths in the
loop

Answers

The strength of a feedback loop is the sum of all the link strengths in the loop.

What is the efficiency of a feedback loop functions?

A feedback loop's overall strength is the sum of the strengths of each of its individual parts. As a result, the impacts are multiplicative rather than additive. The feedback is much reduced in a chain of strong connections with one incredibly weak link. The feedback loop is broken and the feedback is lost if one link breaks.

What is meant by the phrase "biological feedback loop"?

A biological phenomenon known as a feedback loop occurs when a system's output either amplifies the system (positive feedback) or suppresses the system (negative feedback) (negative feedback). Feedback loops are essential for maintaining balance in living systems.

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Complete each statement with the correct term from the drop-down menu.

Many molecules are moved through the body by .

provide structure for plants.

determine what people look like.

Cells are surrounded and protected by .

speed up chemical reactions in the body.

Hemoglobin, a protein, is built by .

The human body is insulated by .

Answers

Answer:

1. many molecules are moved through

the body: BIOLOGICAL MOLECULES

2. provide structure for plant determine what people look like: EUGELA

3.cells are surrounded and protected by:CELL MEMBRANE

4.speed up chemical reaction in The body:ENZYMES

5.hemoglobin a protein is built by:RED BLOOD CELL

6.the human body is insulated by:SUGAR OR DIABETES

1.  Proteins

2. Carbohydrates 

3. Nucleic acids

4. Lipids.

5. Proteins 

6. Nucleic acids

7. Lipids

on edge 22

Atoms were thought to be indivisible (not able to be broken down). We now
know that they are made of smaller particles. Should we still think of them as
the building blocks of matter? Why or why not? How can we change the definition of atoms in this case?

Answers

After the discovery of subatomic particles, the indivisible portion of the theory was abandoned because theories must be supported by a large body of facts. There were several postulates in Dalton's theory of the atom that encapsulated his conception of the atom and the atomic universe.

What should we think of atom asthe building blocks of matter ?

The fundamental building components of everyday matter are called atoms. Most of the things you see around you are made of molecules, which are created when two or more atoms come together. Protons, electrons, and neutrons are the three types of particles that make up an atom.

What is Atom ?

Proton count is a defining characteristic of an element. While altering the number of electrons or protons will change the isotope of an element and produce an ion, doing so will alter the nature of the element itself.

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If you were trying to build muscle which of the following would you increase in your diet??

A. Glycerol
B. Monosaccharides
C. Amino acids
D. Phosphates

Answers

Answer:

C. Amino acids

Explanation:

Proteins are the building blocks of our body. They help in the growth and development. They place a significant role in the increase in our heights, building muscles, stronger bones etc. Amino acids are the units or monomer of proteins.

Each enzyme produced by the body is specific—meaning it is only able to catalyze a reaction with a certain substrate. What causes an enzyme to be specific?

Answers

Answer:

Enzymes are specific because different enzymes have different shaped active sites. The shape of an enzyme's active site is complementary to the shape of its specific substrate or substrates. This means they can fit together.

A simulation is run exploring the random motion of particles and its role in diffusion. At the start of the program, there are 20 blue spheres on one side of the membrane and 10 red spheres on the other side. After a period of time, the distribution of spheres reaches an equal number independent of each other, so that there are 10 blue spheres and 5 red spheres on either side of the membrane. What evidence suggests that diffusion results in a dynamic equilibrium across the membrane?.

Answers

According to the facts, diffusion produces a dynamic equilibrium across the membrane, where the red and blue spheres continue to move in opposite directions.

Diffusion produces a gradient in which molecules and atoms move from one concentration to another. Essentially, it is a procedure designed to preserve equilibrium. The process continues to ensure that there is equal concentration everywhere.

For further explanation, see the image below that has been attached:

The blue spheres are more prevalent on the left side of the first diagram, while the red spheres are more prevalent on the right side.

20 blue spheres are on the left and right sides of the diagram in the question, and 10 red spheres are on the right side. Because the colored spheres are not distributed equally on the two sides of the membrane, some blue spheres will move from the left side (where there is a higher concentration) to the night side (lower concentration).

Additionally, a few red spheres will move from the left side's lower concentration to the night side's higher concentration in order to achieve an equal distribution of red and blue spheres on both sides.

Seek out the second diagram in the question where arrows indicate a change in concentration from higher to lower.

On the left, there are a total of 20 blue spheres. Therefore, 10 blue spheres from the left side of the spheres will move to the night side to achieve equal distribution.

On the right side, there are a total of 10 red spheres. Therefore, five red spheres on the right side of the board will move to the left, distributing the spheres equally.

The second image in the question provides an illustration of the aforementioned distribution.

Look for the arrows that depict the spheres moving.

The atoms and molecules are now free to move, which means they might once more result in a loss of equal concentration. In order to maintain an equal number of red and blue spheres on both sides, the red and blue spheres will therefore move continuously.

On the third diagram, look for the arrows. It demonstrates that both the right and left sides of the blue molecules or atoms are moving. Red spheres are also moving to maintain equal concentration, Similarly, this leads us to the conclusion that even when the red and blue spheres are in equilibrium, they are still moving to the ether side. Thus, despite being in equilibrium, the red and blue spheres continue to move in opposite directions.

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Why do cells age and die?
No one knows for sure
Radiation
Protein changes
Changes in molecular shape

Answers

The cell age and die because of changes in proteins. The correct option is C.

What are cells?

Cells are living units that together form an organism. They contain cell organelles, and the cell organelle performs the carious function of the body. Cells are made up of macromolecules, like protein, lipids, and carbs.

There are various types of cells that perform different functions of the body. Old cells die and new cells are made from the old cells. The old cells die because of a change in the protein structure of protein denaturation.

Thus, the correct option is C. Protein changes.

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What is the logical procedure for the biologist to follow in testing the enzyme

Answers

Answer:

In order for the biologist to conduct an accurate test, he/she must obtain two test tubes and label one as A and one as B.


Describe what happens at a synapse when an impulse arrives.

Answers

Answer: Hello: ) ✨

causes the movement toward the presynaptic membrane of membrane-bound sacs, or synaptic vesicles, which fuse with the membrane and release a chemical substance called a neurotransmitter. At a chemical synapse, one neuron releases neurotransmitter molecules into a small space (the synaptic cleft) that is adjacent to another neuron. The neurotransmitters are contained within small sacs called synaptic vesicles, and are released into the synaptic cleft by exocytosis.

Have a Nice Day <3 .

Photosynthetic algae live within the tissues of the organisms that build coral reefs. The coral organisms provide the algae with carbon dioxide for photosynthesis. The algae supply the corals with oxygen, sugar, and amino acids. Which statement best summarizes the sources of energy in the relationship between algae and coral?

Answers

The coral organisms provide the algae with carbon dioxide for photosynthesis.

How does coral get energy from algae?

Algae inhabit coral polyps and use sunlight to produce sugar, which they use as fuel. The polyp receives this energy, which supplies it with much-needed nutrition. In exchange, coral polyps give algae carbon dioxide and a safe place to live. Additionally, corals consume zooplankton, which are minuscule floating organisms.

What are the corals source of energy?

The ecosystem of coral reefs is made up of a variety of species that interact with one another and the surrounding environment. The ecosystem's primary source of energy is the sun. Photosynthesis is the process by which phytoplankton, algae, and other plants transform light energy into chemical energy.

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What events contribute to genetic drift in the Florida panther

Answers

At the time, the Florida population was reported to be down to 30 animals, with so much inbreeding that most of the panthers were linked to each other. This has resulted in genetic issues such as poor sperm counts and improperly formed testicles, resulting in limited reproductive success.

What is the most significant cause contributing to the fall of the Florida panther population?

A team of geneticists and conservation biologists determined in 1992 that the Florida panther will become extinct in 24-63 years owing to its tiny population size, and related genetic health concerns caused by inbreeding.

The introduction of additional panthers into the Florida panther population assisted in reversing the consequences of inbreeding by introducing new gene versions that concealed the detrimental effects of the recessive gene versions already existing in the Florida panther population.

The most serious dangers to Florida panthers are habitat loss, fragmentation, and degradation

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Efforts to discover whether the intelligence of children is more heavily influenced by their biology or by their home environments are most directly relevant to the debate regarding.

Answers

Efforts to discover whether the intelligence of children is more heavily influenced by their biology or by their home environments are most directly relevant to the debate regarding nature vs. nurture.

Scientists from all over the world have been debating and analyzing the genesis of human intelligence for a very long time. Intuition is something that many people, whether or not they are scientists, feel is something that is born within the individual as a consequence of a genetic aspect. On the other hand, some people think that intelligence is the result of the environment and the way we were created. Others contend that the combination of genetics and environment is the source of intelligence. Regardless of the viewpoint, you subscribe to about the origins of intelligence, we can state that the discussion started to determine whether a child's intelligence is most heavily influenced by their biology or their family settings is most directly relevant to the nature vs. nurture debate.

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Mitosis is the process that forms gametes.

true
false

Answers

Answer:

False.

Explanation:

It would be meiosis, not mitosis.

Answer:your answer is false.

Explanation:

Which cell structure is responsible for making ribosomes? And where is it located?

Answers

The production and assembly of the cell's ribosomes takes place in the nucleolus, a spherical component of the cell's nucleus. Ribosomes can be seen connected to the endoplasmic reticulum or floating in the cytoplasm.

The cytoplasm of the cell contains ribosomes "freely," and they are also affixed to the rough endoplasmic reticulum. The cell nucleus provides information to ribosomes, and the cytoplasm provides building blocks. The biological machinery that produces proteins is known as a ribosome. Each cell contains several ribosomes, which are each composed of two subunits. As they move along the messenger RNA molecule's length, these two subunits read each three-letter codon after locking around the messenger RNA. Ribosomes are produced in the cytoplasm of bacterial cells by the transcription of several ribosome gene operons. In eukaryotes, the process occurs both in the cytoplasm of the cell and in the nucleolus, a section of the cell nucleus.

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If you wanted to design a new industrial catalyst based on something biological, which molecule would you use?

Answers

Proteins would be choice to design a new industrial catalyst based on something biological.

What are Proteins?Proteins are naturally occurring substances composed of amino acid residues linked together by peptide bonds.There are approximately 20 different amino acids found naturally in proteins. Protein makes up nearly all enzymes that catalyse various bodily reactions. Plants can synthesise all amino acids, whereas animals cannot. Plants provide them to animals.Protein-rich foods include meat, fish, poultry, eggs, legumes, and soy products such as tofu or tempeh. You can also choose from this list of delicious high-protein foods to ensure that you meet your requirements at each meal. Animal-based foods (meat, poultry, fish, eggs, and dairy products) are generally high in complete protein, whereas plant-based foods frequently lack one or more essential amino acids.

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Question 6 of 20
How do plants get the nitrogen they need to grow?
OA. They absorb nitrogen through their roots.
OB. They absorb nitrogen gas from the atmosphere.
OC. They create it during photosynthesis.
OD. They create it during respiration.
SUB

Answers

Answer:

They absorb nitrogen through their roots.

Explanation:

Nitrogen is ain't formed or involved in photosynthesis and respiration. So these options are eliminated.

Next is atmosphere. We know the [tex]\%[/tex] composition of nitrogen in the atmosphere is pretty high but plants are not capable of absorbing these free nitrogen directly from the atmosphere.

Hence plants absorb nitrogen from the soil in the form of ions like ammonium ions, nitrate ions, nitrite ions. Some plants also have leguminous nodules where tiny bacterias like rhizobium live and helps in the process of nitrogen fixation.

evaporation outpaces condensation over the ocean, yet water level doesn’t change because of this. why is this?

a. water filters in from the ocean floor

b. all streams eventually lead back to the ocean

c. shorelines don’t change, but the middle of the ocean does

d. the middle of the ocean doesn’t change, but shorelines do

Answers

Answer:

I am not sure but I think option d is correct

Lack of exercise is a determinant for many chronic disease, such as cardiovascuolar disease. what is one direct contributing factor to lack of exercise?

Answers

Lack of exercise causes a variety of health issues, from weight gain that initially seems harmless to cardiovascular disorders and a significantly increased risk of having a stroke.

Fat accumulation in arteries and blood vessels that obstruct the flow of blood to the heart is the primary cause of cardiac disorders.

Exercise increases the function of the same arteries after a high-fat meal compared to before, and it also reverses the arterial dysfunction brought on by fatty foods.When the human body runs out of energy during exercise, it turns to stored saturated fat in our bodies to provide additional energy. This demonstrates that regular exercise is preferable to inactivity for lowering saturated fats, type 2 diabetes risk, and chronic heart disease risk.

Perhaps obesity, which prevents a person from engaging in many physical activities, is the one element contributing to a lack of exercise.

Thus, we can infer that fat accumulation occurs from inactivity, which can cause cardiac ailments as well as chronic illnesses. Since it is difficult for obese people to participate in any physical activity, obesity is a significant contributing factor to the lack of exercise among people.

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Receptor cells in the skin that are sensitive to different tactile qualities--some to shape, someone to grooves, some to vibrations and movements--are called?

Answers

Receptor cells in the skin that are sensitive to different tactile qualities--some to shape, someone to grooves, some to vibrations and movements--are called Mechanoreceptors.

Mechanoreceptors play a role in hearing, balance detection, skin tactile perception, deep tissue perception, and artery pressure perception. Meissner's corpuscles, Pacinian corpuscles, Merkel's disks, and Ruffini's corpuscles are the four main types of encapsulated mechanoreceptors that are specialized to transmit information to the central nervous system regarding touch, pressure, vibration, and cutaneous tension. One type of neural receptor in a somatosensory system is the mechanoreceptor. They play a major role in the recognition of various mechanical stimuli. The skin's touch receptor serves as an illustration. Among creatures with specialized structures for mechanoreception, insects are a well-known example.

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Cannabis concentrates contain significantly more thc than the cannabis plant. Cannabis concentrates commonly have _____ % thc and can contain up to 90% thc.

Answers

Cannabis concentrates contain significantly more THC than the cannabis plant. Cannabis concentrates commonly have 40-80% THC and can contain up to 90% THC.

Cannabis- The sativa or indica cannabis plant's dried leaves and blooming tops. Cannabis includes cannabinoids, which are active compounds that have drug-like effects on the immune system, central nervous system, and other bodily systems.

The most popular reason for using cannabis for medicinal purposes is by far the relief of chronic pain.

THC- The primary psychoactive ingredient of cannabis is tetrahydrocannabinol (THC), one of the 483 known plant chemicals. This contains at least 65 additional cannabinoids, such as cannabidiol (CBD). Cannabis can be taken orally, vapourizingly, ingested, or utilized as an extract.

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Gabriels rebellion never transpired because the plot was discovered and its leaders arrested; nevertheless, the threat of the slave uprising inspired a couple of outcomes. Identify the consequences of gabriels rebellion. Review the graph. A student spends 16.5 hours studying and receives a mark of 61.4%. Which statementdescribes this result?A. The result is not an outlier and there is a gap in the data.B. The result is not an outlier and there is no gap in the data.C. The result is an outlier and there is a gap in the data.D. The result is an outlier and there is no gap in the data. On the pitcher's mound, Isabela Madrigal looked forthe catcher's signal.Isabela Madrigal was on thepitcher's mound.The signal was on thepitcher's mound. 2|4w-1|=3|4w+2| Solve for W, but its absolute value so 2 and 3 cannot be distributed A party planner purchased roses to decorate tables for an event. There were 15 tables and 5 roses were placed on each table. If the roses were $1.98 each, how much did the party planner spend on roses?A. $148.50B. $29.70C. $9.90D. $75.00 how to factorise 3x + 6 What is the atomic mass of one mole of Na?_____ g/mole Write a paragraph explaining what you have learned in this module, The Golden Age of Islam. Make sure to elaborate, be as specific as possible referring to the text. Please check your grammar, including your spelling using the spell check above before submitting.describe achievements of Islamic civilizationrecognize the role of and how historians interpret the pastHow was the Islamic Golden Age possible?What were some of the achievements of Islams Golden Age?Sentence 1- Topic sentence that mentions the theme or main idea, and title.Sentences 2-4+- Sentences discuss ideas in the bullets above.Sentence 5+- Concluding sentence that restates your idea about the theme/main idea. Which political figure understood that democratic government must be responsive to the will of the people and once claimed, our government rests on public opinion?. Water and laundry detergent are mixed together, with detergent molecules dispersing uniformly throughout the liquid. this is an example of a ______. the United States Supreme Court case Plessey v. Ferguson. What wasthe case about and what was the result? Read the question. Then fill in the correct answer on the answer document provided by your teacher or on a sheet of paper.Eddie conducted a random survey of 50 students and fund that 14 nf them spend more than 2 hours each night doing homework. If there are 421 students at Eddie's school, predict how many of them spend more than 2 hours each night doing homework. F. 118 H. 125 G. 124 J. 131 explain the need for a new constitution.What were the issues with the Articles? Which major group of substance in human milk are of special importance to the newborn and cannot be produced in bottle formula? PLEASE HELP LE WITH THIS ANSWET The average donut weighs approximately 50 g, and has approximately11,000 mg of sugar. How much sugar is in three donuts? Answer in g. Which of these questions is most likely to result in response bias?OA. "What do you think of this dress?"OB. "What is your opinion of this dress?"O C. "How do you like this beautiful dress?"OD. "How do you feel about this dress?" The radius of the circle is 5 centimeters line segment ab is a diameter of the circle what is the value of x to the nearest tenth At the break-even point of 2000 units, variable costs are $50000, and fixed costs are $35000. how much is the selling price per unit? a. $25.00 b. $17.50 c. $7.50 d. $42.50 Which sentence is written correctly?ResponsesA She cleans her house for nearly three hours a day.She cleans her house for nearly three hours a day.B She nearly three hours a day, cleans her house.She nearly three hours a day, cleans her house.C Each day, she nearly cleans for three hours.Each day, she nearly cleans for three hours.D She nearly cleans her house for three hours a day.