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Ira Lisetskai [31]
3 years ago
14

Which statement is true about the differences between plant and animal cells? A) Only plant cells have cytoplasm. Reactivate B)

Animal cells are always larger than plant cells. Reactivate C) Plant cells have vacuoles, but animal cells do not. Reactivate D) Only plant cells have chloroplasts that help make food during photosynthesis.
Biology
1 answer:
EleoNora [17]3 years ago
4 0

Answer:

D. Only Plant Cells have Chloroplasts that help make food during photosynthesis.

Explanation:

I always think of it like this-

Plants are green...What make them green? Chloroplasts

Animal cells are not green because they do not have chloroplasts.

A cannot be the answer because animal cells also have cytoplasm that suspend organelles.

B cannot be the answer because all cells come in a range of sizes and some plant cells can be bigger.

C cannot be the answer because some animal cells can have vacuoles.

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If a swimmer cuts his foot on a seashell while wading in the ocean and bleeds into the seawater, his erythrocytes will shrink. W
Effectus [21]

Answer:A) The ocean is hypertonic to the erythrocytes.

Explanation:cells shrink when placed in an hypertonic solution.

This shrinkage occurs does to the movement of water out of the cell and through the cell membrane.this phenomenon is called plasmolysis.

The movement of water out of this cell occurs through osmosis.osmosis is the movement of water from a region of high concentration of solute to a region of low concentration of solute, through a semi-permeable membrane.

In this case,sea water has a higher concentration of solute (hypertonic) and the blood cells has a lower concentration(hypotonic) .the cell membrane serves as the semi-permeable membrane and and a result water moves out of the cell

8 0
3 years ago
Sodium metal reacts whit hydrochloric acid to produce salt and hydrogen gas. What are the reactants in this chemical reaction
AVprozaik [17]

Answer:

Na (sodium) and HCl (hydrochloric acid)

Explanation:

The products are the salt and hydrogen gas

Whenever you see the word react it means those are the reactants (usually whatever compound comes before and after the word). Because they are reacting with each other.

Whenever they say "is produced" those are the products

6 0
3 years ago
Complete the description of Christian Anfinsen's ribonuclease A renaturation experiment. Anfinsen started with purified ribonucl
Sidana [21]

Answer:

In Anfinsen's ribonuclease A renaturation experiment,he wanted to show that protein folding entirely resides within the amino acid sequence of protein.

Explanation:

He used ribonuclease A as a model and removed urea and 2ME from the folding solution.Under these condition, ribonuclease A regains it's biological activity.

This refolding occur in in vitro conditions.

This experiment discover an enzyme called protein disulfide isomerase(PDI) which catalyze the reduction of incorrect dissulfide bonds.This also helps in trapping protein in an incorrect conformationso that it can un fold and try agin.

This PDI plays important role in proper folding,and the active site of this enzyme have disulfide.

5 0
3 years ago
What helps regulate chemical reactions
Bingel [31]

Answer:

enzymes, minerals in the body aswell

Explanation:

4 0
3 years ago
Read 2 more answers
Select all that apply.
nirvana33 [79]

The best answer would be the butterfly. Many insects go through different physical changes during growth. These insects include the butterfly. From being an egg it turned into a larva and grown into a caterpillar which later on become a butterfly.




5 0
3 years ago
Read 2 more answers
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