DNA is very small, one complete turn of a DNA helix is about

O A. 12 nm
B. 3.4 nm
.cher
C. 1.7 nm
ok
D. 34 nm

Answers

Answer 1

your answer is option B.3.4

Answer 2
The answer is b (3.4)

Related Questions

Where does cellular respiration get the energy to make ATP?
A. Chemical energy from sugars.
B. Light energy from the Sun.
C. Energy stored in the covalent bonds of water molecules.
D. Energy stored in the covalent bonds of carbon dioxide molecules.

Answers

Answer:

im un sure it might be B.

Explanation:

You don't have to if you don't.

Answer:

A . the chemical energy from sugars

In a well-fed human eating a Western diet, the richest source of stored chemical energy in the body is ________. In a well-fed human eating a Western diet, the richest source of stored chemical energy in the body is ________. glucose in the blood fat in tissue calcium phosphate in bone glycogen in muscle cells protein in muscle cells

Answers

Answer:

fat in tissue

Explanation:

Biomolecules like carbohydrates, fats etc. are well known for their energy storing abilities. Glucose, as a carbohydrate, is the most used source of energy but is stored in excess as glycogen in the muscle and liver cells.

However, fats are far more efficient in storing energy than carbohydrates or proteins because they give more ATP per molecule. Fats are stored in tissues of the body called ADIPOSE tissues. Hence, the richest source of stored chemical energy in the body is FATS IN TISSUES.

Plz answer, will give brainliest

Answers

Answer:

a. (black fur): phenotype

b. (AA, Aa, aa): genotypes

c. (Aa): heterozygous

d. (aa): hom0zygous recessive

e. (AA): hom0zygous dominant

Explanation:

I took genetics and biology I hope this helps !!

Please I need help with this

Answers

Answer:

nucleus : control activities in the cell. 2, vacuoles: it allows substances in and out of the cell.

IN YOUR OWN WORDS, what is the definition for color blindness (include what is special about how this is inherited)

Answers

Answer:

Color blindness is the inabiliy to see certain colors of the color spectrum. This disease is hereditary and passed down from your parents.

Explanation:

Answer:

Explanation:

Yes

Interphase plays an important role in preparing a cell to divide. Which of the following events takes place during interphase?
A. The cell copies its DNA and grows.
B. DNA and proteins condense into tightly coiled chromosomes.
C. Spindle fibers attach to each chromosome and align them along the cell equator.
D. Cytokinesis takes place, dividing the cytoplasm between the two daughter cells.

Answers

The correct answer is A. In the first step of Mitosis, the Interphase is when the DNA is copied and the cell grows. A.

Both starch and cellulose are made by stringing together many glucose molecules, but starch is easily digested by humans, while cellulose is indigestible. The starch polysaccharide has every bond occurring below the sugar rings while the bonds in cellulose alternate between one bond above the ring and the next below the ring. How can you explain humans' inability to digest cellulose

Answers

Answer:

See explanation

Explanation:

The ability of humans to digest starch and cellulose depends largely on the presence or absence of enzymes that can hydrolyze the starch or cellulose linkages thereby making it digestible.

Starch can easily be digested but cellulose can not be easily be digested because human beings lack the necessary enzyme responsible for hydrolysing the beta-acetyl linkages in cellulose. As a result of this, humans do not metabolise cellulose.

do you think each form of water is emportant? why?​

Answers

Answer:

yes, because Water is very important to the human body. Every one of your cells, organs and tissues use water to help with temperature regulation, keeping hydrated and maintaining bodily functions.

Answer:

yes

Explanation:

because Water is very important to the human body. Every one of your cells, organs and tissues use water to help with temperature regulation, keeping hydrated and maintaining bodily functions.

In Meiosis, the cells produced are what?

Answers

Answer:

daughter cells

Explanation:

sorry have to write for 20 characters

Question 2 of 10
of the places listed, where would you expect to find the lowest air pressure?

Answers

Answer:

The lowest measurable sea-level pressure is found at the centers of tropical cyclones and tornadoes, with a record low of 870 mbar (87 kPa; 26 inHg).

Answer:

if these are your choices:
desert
beach
sea level
mountaintop

its mountaintop

Explanation:

Explain why chewing of boiled rice in the mouth for two minutes is chewing change?​

Answers

Answer:

The rice changes form inside of the mouth when chewing

Determine which of the following statements is true about energy in ecosystems. A. Producers are able to convert 40% of the sun’s energy into chemical energy. B. 30% of the sun’s energy cannot be absorbed by producers because it is in the wrong wavelength of light. C. Producers only absorb 40% of the sun’s energy, most of which is lost during photosynthesis. D. Producers absorb 5% of the sun’s energy, and reflect 5% of the sun’s energy.

Answers

Answer:

A. Producers are able to convert 40% of the sun’s energy into chemical energy.

Explanation:

Energy in an ecosystem must be transferred in the ecosystem. The primary source of energy in an ecosystem is the sun. The terrestrial ecosystem mostly consists of plants and marine ecosystems. As energy flow in an ecosystem is unidirectional. It passed from the organism from one tropic level to another. Only 10% of the energy is available to them.

Answer:

Its C

Explanation:

Many plant pathologists believe that plant resistance is based upon the interplay of different signaling molecules? Justified.

Answers

Answer:

Yes.

Explanation:

Many plant pathologists believe that plant resistance is based upon the interplay of different signaling molecules because plants have various signaling molecules that plays a great role in their growth and development. Ethylene, auxin, cytokinins, gibberellins, and abscisic acid are the growth regulators that controls the growth of plants in different conditions i.e. in resistance. These signals leads the plant to take measures in difficult situations experience by the plants so in this way the plant is resistance to the harsh environmental condition.


*K-selected
*r-selected
If a group of (. )
species lived together in a small area, the carrying capacity of that area would probably
collapse quickly.

Answers

Explanation: Unlike the r-selected species, the size of the population of K-selected species is fairly the same with time. The r-selected species generally lies below the carrying capacity, and the size of the population is density-independent. On the other hand, the K-selected species are generally at or close to the carrying capacity and the size of the population is density-dependent.

Which term is defined as a coral reef that originally formed around the edges of a volcanic island?

a mid-ocean ridge

a continental margin

an atoll

a submarine canyon

Answers

Answer:

an atoll

Explanation:

the circular type known as the an atoll forms around the edges of a volcanic island

When observing a plant cell under a microscope, what parts do you think would be big enough to see?

Answers

Answer:

Explanation:

There are a few key structural differences between plant cells and animal cells.

Below are a few of the main ones:

Plant cells are generally larger than animal cells.

Only animal cells have lysosomes (however, recent, and controversial, research suggests that some plant cells may have lysosomes), and only plant cells have chloroplasts.

While plants cells have a rigid cell wall, animal cells have a thin and flexible plasma membrane.

Plants cells have a large central vacuole and animal cells have many small vacuoles

When observing a plant cell under a microscope, one can see large interlocking rectangular blocks. Around each cell, the cell wall is clearly visible. When stained, the cell wall is somewhat thick and visible. The cytoplasm is also lightly stained, with a darkly stained nucleus at the cell's periphery.

What is a plant cell?

A plant cell is a eukaryotic cell with something like a true nucleus and organelles that perform specific functions. However, some organelles found in plant cells differ from those found in other eukaryotic cells.

At the time of observing a plant cell under a microscope, person can see large rectangular blocks as well as cell wall is clearly visible.

When stained, the cell wall is thick and visible. The cytoplasm will also be lightly stained, with stained nucleus at the cell's periphery.

Thus, these structures can be visible under a microscope.

For more details regarding plant cell, visit:

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what is the length of the shortest side of the triangle

Answers

I wouldn’t know the answer because there is no image included with your question :)
There is no image with your question

Describe what happens by the end of anaphase.
a. The chromosomes in the cell become less tightly coiled.
b. The nuclear envelope disappears in the cell.
c. The mitotic spindle of the cell begins to form outside the nucleus.
d. The cell begins to elongate and the two poles have an equivalent collection of chromsomes.
e. The vesicles derived from the Golgi apparatus produce a cell plate at the middle of the cell that eventually forms the new cell wall.

Answers

Answer:

d. The cell begins to elongate and the two poles have an equivalent collection of chromosomes.

Explanation:

The cell cycle is a fundamental cellular process by which a parent cell divides into two or more daughter cells. In somatic cells, this cycle can be divided into two major phases: interphase, where the cell prepares for its division, and mitosis or 'M phase'. The M phase can in turn be divided into four stages: 1-prophase (also divided into early prophase and prometaphase), 2-metaphase, 3-anaphase, and 4-telophase. During prophase, chromatin condenses, thereby forming visible chromosomes. Subsequently, during metaphase, the sister chromatids (i.e., the two identical halves of a single replicated chromosome) align along the middle of the cell at the metaphase plate by attaching their centromeres to the spindle fibers. Next, during anaphase, sister chromatids are separated and move to opposite poles of the cell, pulled by the mitotic spindle fibers. At the end of anaphase, the microtubules of the mitotic spindle pull the two sister chromatids toward opposite poles, thereby the cell gets begins to lengthen. Finally, during the telophase, daughter chromosomes arrive at opposite poles and uncoil, while daughter nuclei begin to form at the two poles and nuclear envelopes are formed.

The digestive and excretory systems project explaining macromolecules in the body

Answers

Answer:

Our digestive system has the ability to convert macromolecules into micromolecules.

Explanation:

Our digestive system has the ability to convert macromolecules into micromolecules with the help of certain enzymes. Carbohydrate is a macromolecule which is converted into glucose molecule with the help of saliva which is an enzyme present in the mouth, protein is also a macromolecule that is converted into amino acid so that our body cells can absorb it and fats are also macromolecules which can be converted into fatty acids with the help of digestive system. The cells produced waste materials such as carbondioxide gas and nitrogenous material which can be excreted through excretory system such as lungs and urinary bladder.

All carbonate minerals contain the elements_____

a. silicon and oxygen

b. carbon and three oxygen atoms

c. carbon dioxide and oxygen

d. sulfur and four carbon oxygen atoms

Answers

All carbonate minerals contain the elements- carbon and three oxygen atoms
B is the correct answer

During the light reactions part of photosynthesis, chlorophyll in the chloroplast captures energy from the sun. What is this light energy used for?

to release carbon dioxide and use glucose as energy

to turn carbon dioxide and chloroplasts to glucose

to combine oxygen and water to make glucose

to cleave water, release oxygen gas, and convert ADP to ATP

Answers

Answer: when the chlorophyll in the chloroplast captures energy from the sun the energy is used to Combine oxygen and water to make glucose

Explanation: basically it is stored as glucose

HOPE THIS HELPSS!!!!

Which of the following statements is FALSE for photosynthesis?
Select one:
a. Carbon dioxide is produced in the light independent reactions for use in cellular respiration.
b. Light energy from the sun is absorbed by pigments in the leaf and used to reduce carbon atoms in the production of glucose.
c. Energy, in the form of ATP, is used in the light independent reactions to create glucose.
d. Light energy from the sun is absorbed by pigments in the leaf and used to form glucose to be used by organisms in cellular respiration.

Answers

The answer should be d

The false statement about photosynthesis is Light energy from the sun is absorbed by pigments in the leaf and used to form glucose to be used by organisms in cellular respiration. The correct option is d.

What is photosynthesis?

Photosynthesis is a chemical process by which plants make their food. The process includes sunlight which is trapped by chlorophyll, water, and carbon dioxide which is converted into glucose.

The glucose produced by plants is used by them to carry out their process of theirs, not the organisms in cellular respiration.

Thus, the correct option is d. Light energy from the sun is absorbed by pigments in the leaf and used to create glucose to be used by organisms in cellular respiration.

Learn more about photosynthesis, here:

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In light reactions of photosynthesis why photosystem 2 occurs before photosystem 1

Answers

Answer:

because it is his choice

I hope you understand

La estructura de los epopeyas

Answers

Answer:

. Valora la importancia de los experimentos científicos en torno a la generación espon- tánea.

Explanat. Valora la importancia de los experimentos científicos en torno a la generación espon- tánea.

ion:

Which of the following statements is false? Question 1 options: Bcl2 blocks aggregation of BH123 on the outer mitochondrial membrane thus inhibiting apoptosis. BH123 proteins, like Bax and Bak, are death-promoting members of the Bcl2 family that induce the release of cytochrome c from mitochondria into the cytosol. Bcl2 proteins are part of the extrinsic apoptosis pathway. Some Bcl2 family members promote apoptosis, whereas others inhibit apoptosis.

Answers

Answer:

The correct answer is - Bcl2 proteins are part of the extrinsic apoptosis pathway.

Explanation:

The Bcl-2 family group of proteins that are known to either promote or inhibit the process of apoptosis by regulating the mitochondrial membrane potential. Bax and Bak are Bcl-2 proteins, act as pro-apoptotic proteins which oligomerize to result in forming pores in the membrane of the mitochondria.

These pores lead to the release of cytochrome c to the cytoplasm. Bcl-2 protein is an anti-apoptotic protein that inhibits the oligomerization of Bak and Bax.

give your pinterest I'd pls​

Answers

Answer:

okis

Explanation:

My pinterest Alli but with a face like this (Alli:P)

which animal can laugh like humans?​

Answers

Answer:

Chimpanzee laughing sounds a lot like human laughter acoustically

OAmalOHopeO

what is the functions of genotypes???

Answers

Answer:

The genotype of an organism is its complete set of genetic material, two alleles are inherited for a particular gene by your parents sex gametes (sperm + egg). the genotype determines the persons phenotype eg. polydactyly, your eye colour etc, with a recessive or dominant allele. this can be determined through punnet squares too.

This question is very very urgent:-

a. What is the reason for different types of silk?
b. Why are eggs laid by female silk moths warmed?
c. After how many days, caterpillars stop eating and start to spin cocoons?

Answers

Explanation:

i think b. is the warmer the weather, the quicker the Silkworm will complete its life-cycle,

I think it’s B also actually

(1) what is active transpot and activesap (2)what happens if transportation does not occur answer me i will mark u as brainlist​

Answers

1.active transport. The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration. Active transport requires the assistance of a type of protein called a carrier protein, using energy supplied by ATP. SAP Activate is a content-rich and agile methodology for implementation and/or upgrade of SAP solutions across industries and customer environments. It sets out an innovative adoption framework that expedites SAP S/4HANA implementations.

2.If the process of transpiration stops in plants, then the excess water inside the plants will not be able to come out. Hence, the plants will burst due to the presence of excess of water inside them.

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