Does nucleic acid give you fiber?


The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.


hope this helps!!



Answer 16:

The correct answer is D.

D. Anaerobic respiration evolved first; aerobic respiration evolved after photosynthetic organisms began producing oxygen.  

Aerobic respiration take place in the mitochondria and requires oxygen, while anaerobic respiration does not. Anaerobic respiration evolved first and aerobic respiration evolved after photosynthetic organisms began producing oxygen.  

Answer 17:

The correct answer is C.

C. Each daughter cell receives its own copy of the parent cell’s DNA.

Cell division is the process by which a parent cell divides into two or more daughter cells. Each time when a cell divides each daughter cell receives a copy of the parent cell's DNA.

Answer 18:

The correct answer is B.

B. four chromosomes

Mitosis is the type of cell division in which one parent cell divide into the daughter cells; each containing the same number of chromosome as parent cell. So if a cell has four chromosomes, and goes through mitosis to produce identical daughter cells so it will have four chromosomes.

Answer 19:

The correct answer is A.

A. one

If a purple flower color is dominant (P) and red flower color recessive (p), the possible offspring of homozygous purple crossed with homozygous red (PP x pp) will be "Pp" and the only phenotype the purple colored flowers.

Answer 20:

The correct answer is D.

D. polygenic

Polygenic is the phenomenon in which a trait is being control by more than two genes. So, in this case the fur color of dog is controlled by not only two genes but some other genes also influence it, so this is example of polygenic inheritance.

Answer 21:

The correct option is A.

A. two

If T=tall, and t= short would be crossed Tt x tt, it will produce only two different genotypes. i.e. "Tt" and "tt". With reference to Mendel laws.

Answer 22:

The correct answer is C.

C: 36.6%

According to the Chargaff's rule the percentage of cytosine in the DNA of the bacterium S. Lutea in Figure 12–3, should be around 36.6.

Answer 23:

The correct option is B.

B. each nucleotide within a DNA strand can give a cell different information, and there are many nucleotides in every cell

DNA makes a good molecule for storing information because each nucleotide within a DNA strand can give a cell different information, and there are many nucleotides in every cell.

Answer 24:

The correct option is A.

A. the double stranded nature of the helix and its dimensions

X-ray diffraction data collected by Rosalind Franklin and Maurice Wilkins helped Watson and Crick solve the structure of DNA. This data help them to know about the double stranded nature of the helix and its dimensions of the DNA.

Answer 25:

The correct answer is B.

B. uracil

All of the nitrogen bases of DNA and RNA are the same except Uracil. Uracil is only present in RNA and absent in DNA.

Answer 26:

The correct answer is A.

A. Several different codons can specify the same amino acid.

As there are 64 codons and 20 amino acids so it means that several codons can specify the same amino acid or one amino acid can be coded by more than one codons.

Answer 27:

GCG codes for amino acid "alanine" and if we change it to GCC even then it will code for alanine.

so the correct option is A.

A. The amino acid ala is not changed.

Answer 28:

The correct answer is C.

C. DNA to RNA to protein

This is called the central dogma of life in which firstly DNA is transcribed into RNA and then RNA is translated into protein.

Answer 29:

As no figure is given so I am unable to answer this correctly. If the disorder is sex linked trait carried on the X chromosome. So if mother has two alleles it means she has disorder and if she has only one allele of disease. she can be a carrier for that disorder.

Answer 30:  

The correct answer is C.  

C. restriction enzyme

Restriction enzymes are the endonucleases that are used to cut the DNA segments. Restriction enzymes can made sticky ends or blunt ends. They are widely used in recombinant DNA technology.

PART A: option b. .43nm

PART B: option d. 0.11nm

PART C: option c. The wavelengths of visible light are too long compared to the atomic spacing.


Given data

Wavelength λ = 0.20 nm

Angle θ = 0.8 rad


wavelength of x-ray to give maximum at the same location

λ₂ = m λ

Here, m = 2 is the interference fringe order.

Substitute the values in the above equation.

λ₂ = 2 × 0.2

    = 0.4 nm

Hence, the wavelength of x-ray to give maximum at the same location is 0.4nm


The crystal plane separation is equal to d

The value of θ is equal to 0.8 rad.

Convert rad into degree as follows:

0.8 rad = \frac{180^0}{\pi rad} (\frac{0.8rad}{1}) = 144°/π = 45.86°

Solve for d, using equation (1) as follows:

2dsinθ = mλ

d = mλ / 2sinθ

d = (1) 0.17 / 2Sin45.86°

d = 0.17 / 1.9065

d = 0.089 nm


The visible light can not be used to study the structure of proteins because of the high wavelength of the visible light.

1.The answer is; D

All cells that respire have to expire. This is a characteristic of all living things. Cells release their waste products through the process of exocytosis to maintain a homeostatic environment on their inside. The waste, if it’s damaged proteins, are first broken down by proteasomes before they are released out.  An example is the fact that smelly feet are as a result of the waste product of bacteria after they’ve broken down the sweat on your feet. In the body, this waste by the cells is excreted from the system by the excretory organs such as kidney and skin.

2.The answer is; A

This is because bacteria break down large molecules to their constituent elements. An example is their important role in decomposition. Bacteria, such as chemotrophs, and autotrophs also help form molecules through anabolism. This is also why bacteria are hence important in biogeochemical cycles such as nitrogen and carbon cycles.

3.The answer is; C

Fungi and protists (unicellular eukaryotes) have nuclei. This means that their genetic material is surrounded by a  nuclear membrane and demarcated from the rest of the cytoplasm. The virus, on the other hand, is a non-living entity and only depend on other cells machinery to replicate. Therefore cannot even carry out a process such as chemosynthesis.

4.The answer is; A

The biggest difference between angiosperms and gymnosperms is the fact that the seeds of gymnosperms have no seed coat. In addition, gymnosperms (such as conifers) do  not produce flowers hence are referred to as non-flowering plants.

5.The answer is; D

Moss is a plant species in the bryophytes group of plants. These plants are embryophytes meaning they develop a multicellular embryo in a stage of their life cycle. These plants do  not have a well developed vascular system (or lack one) which distinguishes them from vascular plants. Other plant species in the group are liverworts and hornworts. Their life cycle is dominated by the gametophyte phase.

6.The answer is; B

Its enzyme is well known for the breaking of glycosidic bonds of carbohydrates and other polysaccharides. Carbohydrate is its main source of energy. These bacteria are a part of the normal flora of the human gut and therefore assist in breaking down dietary carbohydrates. This bacteria is, however, an opportunistic bacteria and can cause infections when the immune system of the person is compromised.

7.The answer is;

This enzyme can bear low pH because it has a high negative surface charge that stabilizes them at low pH. Most enzymes become denatured in low or high pH because they denature. The pH changes the ionization of the amino acid residues in the protein and disrupts the interaction (such as hydrogen bonding) between the residues hence affects the folding of the protein.

8.The answer is; D

All plants generally reproduce in the same way. They differ in the dominant stages in their life cycle between species. Most higher plants have the sporophyte phase as their dominant  cycle while the lower plants have the gametophyte as their dominant phase. Therefore limiting factors are similar for all the plants.

9.The answer is; D

Root hairs are numerous extensions on the root and are small (even microscopic) in size. This increases the surface to volume ration that the root is in contact with the soil. This maximizes the capacity of the root to absorb nutrients and water from the soil.

10.The answer is; A

The endosymbiotic theory postulates that mitochondria and plastids emanated from an endosymbiotic relationship between a protist cell and a prokaryotic cell that evolved over many years.  Today, this evidence is in the fact that these organelles have their own DNA that replicates independently from that of the host cell. Another evidence is that these organelles also have double membranes.

11.The answer is; One scenario is that the plant would die;

            and the second is that the plant would wilt

The stomata are critical in the transpirational pull of plants that ensures they maintain turgidity giving them support. This occurs when water is lost through the stomata and replaced by that absorbed by the roots and brought up through the xylem.

Carbon dioxide, that is critical in photosynthesis in plants also passes through the stomata. This means that the plant would be unable to make their own food.

12.The answer is; B

The exploding of puffballs exposes the numerous spores in the gills of the fungi. This also pushes the spores out  into the environment and enables the wind and other agents of dispersal to disperse the spores further away from the mother plant. This ensures that the chances of survival of the fungi are higher because this dispersal increases the chances that the spores will find a suitable environment to grow.

Here i provide you what i consider are the correct answers:

1) Cell pumps


3) Mitochondria

4) Prokaryotes have no nucleus

5) I cannot see the illustration "3" sorry!

6) Membrane proteins

7) The cell membrane

8) ATP

9) I cannot see the picture, but you shouldn't see shrunk or swollen cells, just normal cells in shape and size

10) Vesicule

11)  I cannot see the illustration  sorry!

12) Osmosis

13) do NOT need ATP

14) Swell

15) All the above

16) membrane-bound organelles.

17) semipermeable

1. diffusion
4.prokaryotes have no nucleus 
7.cell membrane
15. all of the above
16. membrane bound organelles

I do believe there are the right answers hope this helps

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