Describe the relationship

Biology

1 answer:

Alekssandra [29.7K]3 years ago

7 0

Explanation:

Like most stars in our universe, the Sun is on the main sequence stage of its life. This means nuclear fusion reactions in its core fused hydrogen into helium. However, this process cannot last forever since there is a finite amount of hydrogen in the core of the Sun. Currently it has more than 72% hydrogen.

You might be interested in

Which statement best explains the differences between the cells?

bija089 [108]

I think A in am not a 100%sure tell me if I am wrong.

3 0

3 years ago

What typc of molecule is shown in the diagram?

bonufazy [111]

It's B. Carbohydrates

8 0

3 years ago

What do cells in prokaryotes and eukaryote contain?

gavmur [86]

Here's some tips that should help: All cells, both prokaryotic and eukaryotic, have genetic information in the form of DNA. They also have ribosomes that translate genetic information into proteins. All cells also have a cell membrane that protects the contents of the cells. Inside the membrane, all cells have a gel-like substance known as the cytoplasm.

3 0

3 years ago

The backbones of DNA and RNA are

Nutka1998 [239]

Answer:

The answer is very likely C.

Explanation:

This becomes easy once we remember that DNA and RNA are not identical - which is why they have different names, RNA = 'ribo', DNA = 'deoxy.' This eliminates choice (A). While they are different, they are not incredibly different - DNA and RNA are both made up of nucleotides - they are not however, made up of Amino acids. Amino acids are what they can <em>code</em> for, and subsequently create proteins during protein synthesis. This helps us eliminate (B). Finally, we know that in order for something to have base <em>pairs</em> it needs to be double stranded - which RNA is not. Which means that because RNA is not double stranded (its singly stranded) that the answer cannot be (D). Leaving us with the only plausible option; (C).

6 0

3 years ago

Read 2 more answers

Your lab group is experimenting with the diffusion of molecules across a membrane. Dialysis tubing is used as a model cell membr

Margaret [11]

Answer: the membrane channel

Explanation:

In passive diffusion, the small water molecules can move across the phospholipid bilayer seen in blue. This layer acts as a semi-permeable or selectively permeable membrane; its hydrophilic heads are attracted to water (seen facing outwards) while its water-repellent hydrophobic tails face towards each other- allowing molecules of water to diffuse across the membrane along the concentration gradient.

Thus the water will move from an area of high concentration to an area of low concentration, until the system reaches a steady state called equilibrium- after this, there will be no net movement of water. Similarly via osmosis, the water passes through the membrane due to the difference in osmotic pressure on either side of the phospholipid bilayer this means that the water moves from regions of high osmotic pressure/concentration to regions of low pressure/ concentration to a steady state.

The dialysis tubing mimics a semi permeable membrane; it only allows water and small molecules of iodine to cross into the bag containing starch. The tubing is impermeable to starch; these large molecules require the aid of protein omplexes called membrane channels, in order to move across the membrane and against the concentration gradient.

5 0

4 years ago