What molecule, located in the nucleus, is composed of two strands forming a double helix, and what is its function?
O It is a protein, and it catalyzes cellular reactions.
O It is a carbohydrate, and it is a source of cellular energy.
O It is DNA, and it stores the genetic information of cells.
It is RNA, and it is directly involved in the synthesis of proteins.
on

Answers

Answer 1
DNA because DNA always has a double helix

Related Questions

when a cancer cell divides which of the following types of cells does it produce

Answers

Answer:

produces a new tumour

Explanation:

A new tumour can start to grow in the same area of the body where the cancer first started, or the cancer may have spread through the blood or lymphatic system to another part of the body, where it grows into a new tumour.

Ok this is the last one

Answers

Answer: Acceleration

Explanation:

What determines whether a metamorphic rock is foliated or nonfoliated?

Answers

it's 3 i think. bbjghjhgsjsishgdjdj

what is the primary function of cellular respiration?

Answers

The ultimate function of cellular respiration is to release energy stored in glucose as useable energy for the cell.

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Hello!


The main function of cellular respiration is to synthesize biochemical energy. Cellular respiration is essential to both eukaryotic and prokaryotic cells because this biochemical energy is produced to fuel many metabolic processes, such as biosynthesis, locomotion, and transportation of molecules across membranes


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What biomolecule is a cell with a lot of ribosomes attached to its rough endoplasmic reticulum probably specialized to manufacture?

Answers

Answer:Ribosomes are the cellular structures responsible for protein synthesis. When viewed through an electron microscope, ribosomes appear either as clusters (polyribosomes) or single, tiny dots that float freely in the cytoplasm. They may be attached to the cytoplasmic side of the plasma membrane or the cytoplasmic side of the endoplasmic reticulum and the outer membrane of the nuclear envelope. Electron microscopy has shown us that ribosomes, which are large complexes of protein and RNA, consist of two subunits, aptly called large and small (Figure 1). Ribosomes receive their “orders” for protein synthesis from the nucleus where the DNA is transcribed into messenger RNA (mRNA). The mRNA travels to the ribosomes, which translate the code provided by the sequence of the nitrogenous bases in the mRNA into a specific order of amino acids in a protein. Amino acids are the building blocks of proteins.

Because proteins synthesis is an essential function of all cells, ribosomes are found in practically every cell. Ribosomes are particularly abundant in cells that synthesize large amounts of protein. For example, the pancreas is responsible for creating several digestive enzymes and the cells that produce these enzymes contain many ribosomes. Thus, we see another example of form following function.

Mitochondria

Mitochondria (singular = mitochondrion) are often called the “powerhouses” or “energy factories” of a cell because they are responsible for making adenosine triphosphate (ATP), the cell’s main energy-carrying molecule. ATP represents the short-term stored energy of the cell. Cellular respiration is the process of making ATP using the chemical energy found in glucose and other nutrients. In mitochondria, this process uses oxygen and produces carbon dioxide as a waste product. In fact, the carbon dioxide that you exhale with every breath comes from the cellular reactions that produce carbon dioxide as a byproduct.

In keeping with our theme of form following function, it is important to point out that muscle cells have a very high concentration of mitochondria that produce ATP. Your muscle cells need a lot of energy to keep your body moving. When your cells don’t get enough oxygen, they do not make a lot of ATP. Instead, the small amount of ATP they make in the absence of oxygen is accompanied by the production of lactic acid.

This transmission electron micrograph of a mitochondrion shows an oval outer membrane and an inner membrane with many folds called cristae. Inside the inner membrane is a space called the mitochondrial matrix.

Figure 2. This electron micrograph shows a mitochondrion as viewed with a transmission electron microscope. This organelle has an outer membrane and an inner membrane. The inner membrane contains folds, called cristae, which increase its surface area. The space between the two membranes is called the intermembrane space, and the space inside the inner membrane is called the mitochondrial matrix. ATP synthesis takes place on the inner membrane. (credit: modification of work by Matthew Britton; scale-bar data from Matt Russell)

Mitochondria are oval-shaped, double membrane organelles (Figure 2) that have their own DNA and ribosomes (we’ll talk about these later!). Each membrane is a phospholipid bilayer embedded with proteins. The inner layer has folds called cristae. The area surrounded by the folds is called the mitochondrial matrix. The cristae and the matrix have different roles in cellular respiration.

Peroxisomes

Peroxisomes are small, round organelles enclosed by single membranes. They carry out oxidation reactions that break down fatty acids and amino acids. They also detoxify many poisons that may enter the body. Many of these oxidation reactions release hydrogen peroxide, H2O2, which would be damaging to cells; however, when these reactions are confined to peroxisomes, enzymes safely break down the H2O2 into oxygen and water. For example, alcohol is detoxified by peroxisomes in liver cells. Glyoxysomes, which are specialized peroxisomes in plants, are responsible for converting stored fats into sugars.

Explanation:

In the stable food chain shown below, what would you expect to happen initially if you were to suddenly double the population of rabbits?
A food pyramid, top to bottom: hawk, snakes, rabbits.
a.
The populations of the other three species would also increase.
b.
The populations of the other three species would decrease.
c.
The grass population would decrease. The snake population and hawk population would increase.
d.
The grass population and hawk population would decrease. The snake population would increase.



Please select the best answer from the choices provided


A
B
C
D

Answers

Answer:

she is wrong , its c

Explanation:

The grass population would decrease. The snake population and hawk population would increase.

The correct answer is option C. . If you were to suddenly double the population of rabbits, the grass population would decrease due to overgrazing by the increased rabbit population.

What will happen in result to it ?

As a result, the snake population and hawk population would increase due to the increased availability of prey. This is known as a trophic cascade, where changes in one trophic level affect the populations of other trophic levels in the food chain.

Option A and B are unlikely as doubling the population of rabbits would not necessarily cause the populations of the other three species to increase or decrease in a straightforward manner.

Option D is incorrect as there is no direct relationship between the rabbit population and the hawk population in this food chain.

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Match the description with the correct term

Answers

Can I see the photo

Maya Is a carrier for albinism, a recessive tralt that results in the absence of the skin plgment melanin In halr and
eyes. She marries Jack, and they have four children: Zach, Olivia, Sophla, and Veronica. Veronica expresses the
tralt for albinism, but her three siblings are unaffected by the recessive tralt.
Draw a pedigree that Illustrates the famlly's tralts, and upload your pedigree.

Answers

Answer:

hereditary

Explanation:

if Maya tralt if albinism is recessive, then definitely the tralt for Jack is dominant

Which of the following best represents the goals of the 1963 March on Washington organizers?

A.) To tell Congress they are doing great.
B.) To unify Americans to gather in non-violent protest to bring about real, actionable change
C.) To get the president on their side
D.) To support separate education

Answers

Answer:

D.) To support separate education

Explanation:

Answer:

B

To unify Americans to gather in non-violent protest to bring about real, actionable change

Explanation:

Originally conceived as a mass demonstration to spotlight economic inequalities and press for a new federal jobs program and a higher minimum wage, the goals of the march expanded to include calls for congressional passage of the Civil Rights Act, full integration of public schools, and enactment of a bill prohibiting ...

What would happen to this food web if the blue striped snapper became extinct in the coral ecosystem?

Answers

It would die because of the snappers oxygen

Please help I do not know what the answer is.

Answers

Answer:

On what?

Explanation:

Diabetes is a disease where the body is unable to produce enough insulin in the pancreas to help lower the levels of blood glucose. The ribosomes manufacturer the insulin in healthy cells, but those who are diabetic do not have healthy cells to do this. In which organ would you find the ribosomes producing insulin in a non diabetic individual?
A.) liver
B.) pancreas
C.) stomach
D.) thyroid

Answers

insulin is produced in the pancreas

The pancreas is the organ in which ribosomes produce insulin in a non-diabetic individual. So, the correct option is B.

What do you mean by Diabetes?

Diabetes may be defined as a disease that increases the blood glucose level as compared to normal. This is due to the body being unable to produce enough insulin in the pancreas to help lower the levels of blood glucose.

Insulin is produced in the pancreas with the help of ribosomes in non-diabetic individuals.

Therefore, the organ in which ribosomes produce insulin in a non-diabetic individual is the pancreas.

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WRITE THE EVOLUTION ARIES OF MICROSCOPE WITH SUPPORTIVE INOVATIVE SCIENTIST.

Answers

Answer:

12345678910

Explanation:

trust me brooo

What determines how chromosomes line up during meiosis?

Answers

The spindle fibers will move the chromosomes until they are lined up at the spindle equator. Metaphase: During metaphase, each of the 46 chromosomes line up along the center of the cell at the metaphase plate. Anaphase: During anaphase, the centromere splits, allowing the sister chromatids to separate

1. How would this method or replication reduce errors (mutations) in newly constructed DNA?

Answers

Answer:

DNA polymerase proofreading

Explanation:

Proofreading by DNA polymerase corrects errors during replication. Some errors are not corrected during replication, but are instead corrected after replication is completed; this type of repair is known as mismatch repair.

human construction of buildings and pavement affect the hydrological cycle by

Answers

Decreasing the amount

easy - one giving brainly if correct and DETAILED!
please give me atleast 2.​

Answers

really cool question you asked but it seems you kinda made it invisible

what are the three pairs of funiculi in the spinal cord?

Answers

Answer:

In each half of the spinal cord, white matter is divided into three major bundles, called funiculi. The dorsolateral sulcus marks the division between dorsal funiculus and lateral funiculus.

Explanation:

when inactive, the alpha subunit of the g-protein is bound to:

Answers

Answer:

the beta-gamma subunit to form an inactive trimeric protein.

Explanation:

When inactive, the alpha subunit of the G-protein is bound to a GDP molecule.

The guanine nucleotide-binding proteins (commonly called G proteins or GTPases) represent an evolutionarily conserved protein family that serves to switch on/off different signaling pathways within the cell.

G-proteins are composed of three different subunits: Gα, Gβ, and Gγ subunits.

When GDP is bound to , this subunit remains bound to the Gβ subunit in order to form an inactive heterotrimeric protein.

When GTP is bound to the G-protein, then Gα dissociates from the other subunits and triggers the activation of the G-protein.

In conclusion, when inactive, the alpha subunit of the G-protein is bound to a GDP molecule.

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who disproved the theory of spontaneous generation

Answers

Louis Pasteur

I hope that was right

9. What keeps the tendons around the wrist from popping out?

Answers

Answer:

Soft tissue or subsheath keeps the tendon in place at the wrist. A sudden forced rotation or hyperextension can cause this subsheath to tear and allow the ecu to move out of its natural groove.

Explanation:

when two strains of bacteria with genotypes abcd and abcd are grown together in the lab, a small number of bacteria with the genotype abcd eventually arise. how does this likely occur?

Answers

Answer:

These enzymes work in two ways. Some are pre-replicative and search the DNA for nucleotides with unusual structures

Explanation:

This happened through a lateral transfer of genes.

We can arrive at this answer because:

Lateral gene transfer is a system for exchanging genetic material between unrelated bacteria.Bacteria are beings that reproduce without the exchange of genetic material, but in some cases, this can be done with the lateral transmission of genes.This transmission can be done through the process of conjugation, translation, or transformation.

The result is that new bacteria are created with a mixture of genes from two unrelated bacteria.

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help

Facilitated diffusion uses -----------------to help aid some substances across the cell membrane.

Answers

Facilitated diffusion of substances crossing the cell (plasma) membrane takes place with the help of proteins such as channel proteins and carrier proteins.

Facilitated diffusion uses transport proteins to help aid some substances across the cell membrane.

Facilitated diffusion is a passive transport process that enables the movement of specific molecules across the cell membrane with the assistance of transport proteins. While simple diffusion allows small, non-polar molecules to pass directly through the lipid bilayer of the cell membrane, facilitated diffusion comes into play when larger molecules or molecules with charges need to cross.

Transport proteins act as gateways or channels in the cell membrane. They are selective and only allow specific molecules to pass through. There are two main types of transport proteins involved in facilitated diffusion: channel proteins and carrier proteins.

Channel Proteins: These proteins form pores or channels in the cell membrane, allowing certain molecules, such as ions or water, to pass through. Channel proteins are highly specific and only allow certain substances to cross.

Carrier Proteins: These proteins undergo a change in shape to "carry" molecules across the membrane. When a specific molecule binds to the carrier protein, it triggers a change in the protein's shape that transports the molecule across the membrane. Once the molecule is released on the other side, the carrier protein returns to its original shape.

Facilitated diffusion is a crucial process for maintaining the balance of ions and molecules inside and outside the cell. It's important for the transport of nutrients, ions, and other essential molecules that may be too large or polar to diffuse directly through the lipid bilayer. The involvement of transport proteins ensures that only specific substances are transported, preventing unwanted molecules from entering or leaving the cell. Overall, facilitated diffusion is a highly regulated process that contributes to the homeostasis of the cell and the overall functioning of the organism.

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what is the most dangerous plant known by man kind?

Answers

Answer:

1). The oleander, also known as laurel of flower or trinitaria, is a shrub plant (of Mediterranean origin and therefore, resistant to droughts) with intensely green leaves and whose leaves, flowers, stems, branches and seeds are all highly poisonous, hence it is also known as "the most poisonous plant in the world".

2). The Dendrocnide Moroides is known as "the world's most dangerous plant," with even morphine rendered ineffective against its venom, Nature reports. The shrub has numerous names including the Gympie Gympie, Stinging Bush, Queensland Stinger and the Giant Australian Stinging Tree.

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The most dangerous plant known by man kind is The Dendrocnide Moroides.

seeds from a single sexually reproducing plant are harvested and later planted under identical conditions. what results should be expected?

Answers

They should differ from each other depending on their genetic constitution

What is the source from where organisms get glucose?
This is apart of cellular respiration

Answers

Answer:

The source of glucose molecules in plants is the product formed by the process of photosynthesis which is ultimately stored in the parts of plants. In animals, glucose is formed by the oxidation of carbohydrates which are obtained from food.

Explanation:

In the process of photosynthesis, plants and other photosynthetic producers create glucose, which stores energy in its chemical bonds. Then, both plants and consumers, such as animals, undergo a series of metabolic pathways—collectively called cellular respiration.

examples of foods that are rich sources of phytochemicals include

Answers

Answer:

Brocolli

Berries

Soynuts

Celery

Spinach

Pears

Explanation:

Six foods that are rich in phytochemicals.

what other animals belong to the same group of invertebrates as jellyfish?

Answers

Answer:

corals and anemones

Explanation:

Plz help:
b. Compare dominant and recessive traits –
c. Compare pure and hybrid offspring –

Answers

Answer:

b. What is the difference between dominant and recessive traits? Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.

c. In the simplest possible terms, purebreds are the offspring that result from mating between genetically similar parents while hybrids are the offspring that are the result of mating between two genetically dissimilar parents.

Explanation:

Answer:

b. Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.

Explanation:

c. purebreds are the offspring that result from mating between genetically similar parents while hybrids are the offspring that are the result of mating between two genetically dissimilar parents.

a particularly active cell might contain large numbers of

Answers

the answer is mitochondria
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