Question

Which of the following statements is true?
A). Eukaryotes have circular chromosomes
B). Prokaryotes divide by mitosis
C). Animal cells from ne cell walls when they divide
D). Plant cells and animal cells have different strategies for cytokinesis

Answer 1

First to answer get a medal :)

@OM14forever

Answer 2

The correct answer would most likely be B). Prokaryotes divide by mitosis. Recall that prokaryotic cells are cells lacking nuclei and thus do not reproduce meiotically. Their division is primitive and can only divide through methods that preserve all genetic material in each cell. Do you remember the notations for how much chromosomal/genetic material is conserved via mitosis versus via meiosis? If a parent cell as 2n 'genetic material units', mitotic division would result in daughter cells with 2n material, while meiotic division would result in daughter cells with 1n material. There's a lot of evolutionary explanation that goes into how this process works, but simply put, since prokaryotes cannot reproduce sexually, they must divide in a method that conserves all genetic material... a.k.a. mitosis.

Check with the other answers to also see why B) is the most correct. Eukaryotes simply don't have circular, ring-like chromosomes; they have chromosomal strands in most cases. Animal cells lack cell wall structures; cell walls are characteristic of plant cells in particular, due to the heavy need for water retention and structural rigidity in plants. Finally, cytokinesis is a trait inherent in mitotic division: there is no distinctive reason why cytokinetic division would be different between animal and plant cells. Thus, your answer would deductively be B) as well.

Answer 3

Thank you so much for the detailed explanation! I have one more question if you don't mind?

Answer 4

Of course!

Answer 5

The process of cellular respiration
A). Occurs only in animals
B). Occurs before plants are able to continue photosynthesis
C). Breaks down food molecules to release stored energy
D). Is performed only by organisms that are incapable of photosynthesis

Answer 6

The correct answer here would most likely be C). Breaks down food molecules to release stored energy. First off, cellular respiration, an evolutionarily advanced means of breaking down stored sugar molecules to obtain stored energy, is a method used universally by plants and animals alike. That means A) and D) are out of the question. B) cannot work either because cellular respiration and photosynthesis are not independent reactions, but rather occur simultaneously within a cell. Therefore, the only answer correct would be C).

Answer 7

Okay thank you! :)