4. Using evidence from the text, describe the purpose of the cell membrane.

Answers

Answer 1

Answer:

it protects the cell from germs and stuff


Related Questions


please help.

what happens to a monomer once it is used to create a polymer?

A. the monomer can be reused once the polymer is deconstructed
B. the monomer is destroyed
C. The monomer is permanently part of the polymer

Answers

The answer is A it can be reused.

The monomer can be reused once the polymer is deconstructed. So, the correct option is (A).

What is Monomer?

A monomer is defined as a molecule which can react with other monomer molecules to form a larger polymer chain or three-dimensional network in a process called polymerization.

These are described as atoms or small molecules which bond together to form more complex structures known as polymers. There are four main types of monomer which include sugars, amino acids, fatty acids, and nucleotides.

Monomers can also be reused again when the polymer is deconstructed.

Thus, the monomer can be reused once the polymer is deconstructed. So, the correct option is (A).

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An agricultural biologist was evaluating two newly developed varieties of wheat as potential crops. In an experiment, seedlings were germinated on moist paper towels at 20ºC for 48 hours. Oxygen consumption of the two-day-old seedlings was measured at different temperatures. The data are shown in the graph below. In a second experiment, variety A seedlings at both temperatures were treated with a chemical that prevents NADH from being oxidized to NAD+. Predict the most likely effect of the chemical on metabolism and oxygen consumption of the treated seedlings. Explain your prediction.

Answers

Answer:

The definition is listed in the clarification segment below, and according to the present circumstances.

Explanation:

It undergoes different morphological as well as biochemical modifications mostly during germination. Product contains nutrients and even some hydrolases such as energy, carbohydrates. Owing to the availability of phytic compounds, the seed coat seems to be very durable in nature. Hydrolytic enzymes launch their function by consuming oxygen throughout order to remove this hard coating. In several other processes, including the electron transport system as well as the Kreb process, oxygen also becomes necessary.

The initial phase of germinating seeds requires anaerobic environments where even the enzymes dehydrogenase can function. The subsequent dehydrogenase enzyme brings the electron throughout the electron transport system from either the base to oxygen.  Unless the oxygen frequency is compared with varieties A and B, it can be seen through the analysis that variety B actually absorbed more oxygen. Oxygen intake rates are also depending upon period.The impact of temperature mostly on absorption of oxygen seems to be present. Shift the supply at low temperatures have a low intake of oxygen, while varieties grown over extreme temperatures use much more oxygen. The metabolism of such a seedling is influenced by temperature. Metabolically active young plants display a larger intake of oxygen.

Need help with this

Answers

Answer:

Respiratory Sir

Explanation:

Earthquakes that occur far from plate boundaries are called

Answers

Answer:

intraplate' earthquakes

Explanation:

What holds amino acid chains within a protein in shape?​

Answers

Answer:

Proteins are the end products of the decoding process that starts with the information in cellular DNA. As workhorses of the cell, proteins compose structural and motor elements in the cell, and they serve as the catalysts for virtually every biochemical reaction that occurs in living things. This incredible array of functions derives from a startlingly simple code that specifies a hugely diverse set of structures.

In fact, each gene in cellular DNA contains the code for a unique protein structure. Not only are these proteins assembled with different amino acid sequences, but they also are held together by different bonds and folded into a variety of three-dimensional structures. The folded shape, or conformation, depends directly on the linear amino acid sequence of the protein.

Explanation:

At room temperature, more than half of the nonmetal elements are _____.

A.alloys

B.solids

C.gases

Answers

Answer:

C

Explanation:

Please I need the the experimental group, the control group, independent variable, dependent variable and controlled variable and a summarized version of the experiment by today please!

“Chad is attempting to determine how different colors of light
affect plant growth. Chad places one spider plant in a cabinet
under a blue light and one spider plant in a cabinet under a red
light. Chad knows he needs to compare his plants to a plant
grown under white light so he places a third spider plant on the
window sill where the sun shines. All plants are the same age
and are given equal amounts of light time, plant food and water.
At the end of a two week period, Chad will measure the height of
each plant.”

Answers

Answer:

can you please answer my question please

Explanation:

pleaseee

What type of substance do humans make?

Answers

Answer:

Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium. All 11 are necessary for life.

Explanation:

Brainliest; please?

Viruses are one of the leading causes of illness in the world

True
False

Answers

Answer:

True

Explanation:

Answer:

False, but be sure you read what follows.

Explanation:

False: Heart disease and Most Cancers are not viruses. Or at least as far as I know. However complicating the issue is the fact that after a viral infection, heart disease can develop.

Cancer is another example, and the answer again is not black and white. 16% of all cancers can trace their beginnings to a bacteria or virus. That leaves 84% whose beginnings are not that clear.

The question is not black and white. I'd be careful how you think of it. If something is a complication, is that a direct cause? I still think the answer is false,  but don't be surprised if your instructor disagrees. Move on to something a little less black and white.

how do the respiratory and circulatory systems work together to maintain homeostasis

Answers

The respiratory system regulates oxygen flow, and provides regulation for oxygen blood content. Circulatory system plays a roll in providing enough oxygenated blood to the body

I NEED HELP ASAP
12. If I were a drop of water and I entered the cycle in the transpiration
stage, where would I go next?

Answers

Answer:

Condensation

Explanation:

Transpiration is when the plants give off water. THe water is like evaporating but from plants. It then turns into clouds.

Answer:

Runoff

Explanation:

water pours down leading to runoff, in this process water runs over the surface of earth.

Explain at least three ways in which a mutation in an individual's DNA could occur, and describe at least 2 effects a mutation could have on an individual's traits.

Answers

Answer:

Explanation:

Three ways in which mutation could occur are

1) If an error occurs during DNA replication and it's not corrected in time by DNA polymerase.

2) If there is a deletion of a base(s) in the sequence of the DNA. The deletion of a DNA nucleotide/base could also cause a mutation as that could affect the formation of an enzyme or protein useful in building and/processing certain body parts/processes.

3) Thymine dimerization: Thymine dimers are mutations that prevent DNA from replication or even transcription hence preventing a cell from undergoing division (hence causes cancer). They are formed when covalent bonds are formed between the bases of a DNA sequence (somewhere around the carbon-carbon double bond).

The two effects are

1) It could cause cancer as described in (3) above (in the case of thymine dimer)

2) It could lead to deformity in an individual because of the gene that is supposed to code for the last finger has a base deletion, that could eventually lead to the absence of that finger or a shorter or "strange" finger.

A species is a group of organisms so similar to one another that they can breed and produce fertile offspring. True or False.

Answers

Answer:

True

Explanation:

That is the exact definition that I learned.

Choose the answer that best describes the order of the life cycle of a large star.
•gas clouds, star ignites, hydrogen depleted, red supergiant, super nova, neutron star
•gas clouds, star ignites, neutron star, hydrogen depleted, red giant supernova
•gas clouds, nuclear reaction, hydrogen depleted, red giant white dwarf

Answers

It is three I think so

Answer:

I think its A gas clouds, star ignites, hydrogen depleted, red super giant, super nova, neutron star

Explanation:

Its Not gas clouds, nuclear reaction, hydrogen depleted, red giant white dwarf that is the wrong answer

In order to fit all of our DNA into our cells, it is wrapped around histone proteins and then...
A. reduction-bonded
B. bound to the wall of the Nucleus
C. compressed with a reducing sugar
D. supercoiled

Answers

Answer:

d

Explanation:

What is the name of the structure labeled A in the diagram below?
A
F
B
D
O A. Cytoplasm
OB. Nucleus
ООО
C. Mitochondrion
O D. Ribosome

Answers

Answer:

I believe its C

Explanation:

The structure labeled A in the diagram is of mitochondria.

What is mitochondria?It is a double membranous organelle.The space between its two membranes is called intermembrane space.It is also known as powerhouse of cell as it generates ATP.Cristae is present in it.

Hence, option C. mitochondria is correct.

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1. Describe cell differentiation and include any environmental factors that play a role in gene regulation. 2. Explain the types of cells produced by meiosis. Include in your explanation the number of daughter cells produced, the number of chromosomes in each and whether they are diploid or haploid.

Answers

Answer:

1. Cell differentiation is the process whereby simple generalized cell develop into cell with specialization in function and structures. Some environmental factors that affect gene regulation include diet and nutrition, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens.

2. Gametes or sex cells are produced in meiosis and they have haploid number of chromosomes. In humans, the haploid number of chromosomes is 23 chromosomes.

Explanation:

Cell differentiation is the process whereby simple generalized cell develop into cell with specialization in function and structures. During the initiation of cell differentiation, transcription factors activate only  the genes to be expressed. Some environmental factors that affect gene regulation include diet and nutrition, temperature, oxygen levels, humidity, and the presence of mutagens(factors that cause mutation).

Differentiation occurs in zygotes numerous times resulting in the formation of a fully developed organism. Also in unspecialized cells known as stem cells, differentiation occurs leading to the formation of various cells of the organs and tissues of the body.

2. Meiosis is a type of cell division in which gametes or sex cells are produced. A single cell divides twice producing daughter cells with half the number of chromosomes present in the parent cell. In humans, the chromosome number is 46. After, meiosis, the haploid number of chromosomes produced is 23.

What happens to a substance when it is heated?

a
Thermal energy is decreased
b
Potential energy is increased
c
Kinetic energy is increased
d
It does not change its physical shape

Answers

Answer: C

Explanation:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster:  the space between atoms increases:   The motion and spacing of the particles determines the state of matter of the substance:  The end result of increased molecular motion is that the object expands and takes up more space.

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New Zealand has a population of 4,326,380 and has an area of 103,736 miles squared while Australia has an area of 2,967,909 miles squared and a population of 21,905,140. Explain how New Zealand can have a larger population density than Australia even though it has a smaller total population.

Answers

The reason they have a higher population density is because they have more people on average in a certain area, because New Zealand is smaller they are given less space to live, this means that more people are crammed together, making the density of people within a square mile higher. When you give less square miles, you reduce the amount you have to divide the population by, which makes the density go up.

( In case you wanted the calculations for the density on New Zealand and Australia, it is about 41 to 42 people a square mile in Zealand, and maybe 7 or 8 per square mile in Australia.)

Hope this helps, if not, comment below please!!!

Which of these are MOST involved in exchanging gases?
1 point
heart
bladder
lungs
pituitary gland
lymph nodes

Answers

Lungs (I think).
Hope this helps:)

What is the function of the macromolecule nucleotide?
A.SHRED STC
B.Immediate energy
C.Stored enery
D.Body instructions

Answers

Answer:

I believe that the answer is D.

Explanation:

A) is wrong

B) is carbohydrates

C) is lipids

D) is nucleic acids and the monomer of nucleic acids are nucleotides.

Viruses exist on a microscopic scale

True
False

Answers

Answer:

True

Taking a look at viruses under the microscope. Unlike other unicellular organisms like bacteria, viruses are commonly referred to as particles rather than cells.

True! viruses can only be seen in DNA and a microscopic scale

Which of the following is not an example of energy transformations in an ecosystem? a. sunlight driving photosynthesis in plants b. herbivores feeding on plants c. predators feeding on herbivores d. none of the above Please select the best answer from the choices provided A B C D

Answers

Answer:

D. None of the above

Explanation:

Energy transformation is the process of transfer and conversion of energy from one species to another. None of the above is not an example of energy transformation. Thus, option D is correct.

What is energy transformation?

Energy transformation is the process in an ecosystem that includes the conversion of energy from one level to another in the food chain or the metabolic reactions.

Photosynthetic reactions under the sun, herbivores feeding on producers, and predators feeding on the primary consumers are examples of energy conversion as it is continuously passing the energy to another species in the ecosystem.

Therefore, none of the above is not an example of energy transformation.

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Which type of specialized cell is responsible for sending signals throughout the body?



Nerve cells


Epithelial Cells


Muscle Cells


Blood Cells

its multi choice

Answers

Answer:

NERVE CELL

THANKS FOR POINTS

Help! The is a question about enzymes.

Answers

ans is no 3

Explanation:

ok this is the last one

Answers

Answer:

Compound sentence

Explanation:

it uses a conjunction to add the to sentences together.

Wha
t is compound microscope

Answers

The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects

Answer:

The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects

how does each of your mutations affect the amino acid sequences? Are the mutations missense mutations, silent mutations or nonsense mutations?

a. Point mutation?

b. Frameshift-insertion?

c. Frameshift-deletion?​

Answers

Answer:

the correct answer is B Frame shift insertion

Explanation:

plz give me brainiest

Frameshift-insertion mutations affect the amino acid sequences.

Thus, The insertion or deletion of nucleotide bases in amounts that are not multiples of three is referred to as a frameshift mutation in a gene.

This is significant because a cell reads the genetic code for proteins in groups of three nucleotides.

These so-called "triplet codons" each stand for one of the 20 different amino acids that go into making a protein. This normal reading frame will be disrupted by a mutation, which will result in an inaccurate reading of the entire gene sequence after the mutation.

Thus, Frameshift-insertion mutations affect the amino acid sequences.

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The mother has long fur:
(FF)
F= long fur

The father does not have long fur:
(ff)
f=short fur

Answers

Answer:

are you looking for a pedigree, or a square pedigree?

Explanation:

How does oxygen enter the cells of the tube worm

Answers

Answer:

Flatworms are small, literally flat worms, which 'breathe' through diffusion across the outer membrane (Figure 2). The flat shape of these organisms increases the surface area for diffusion, ensuring that each cell within the body is close to the outer membrane surface and has access to oxygen.

Explanation:

Hope this helps!

Answer:

This is what you need

Explanation:

Flatworms are small, literally flat worms, which 'breathe' through diffusion across the outer membrane The flat shape of these organisms increases the surface area for diffusion, ensuring that each cell within the body is close to the outer membrane surface and has access to oxygen.

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