Which of the following macromolecules leaves the nucleus of a eukaryotic cell through pores in the nuclear membrane?

A) DNA
B) amino acids
C) mRNA
D) phospholipids


Answer: C

Biology & Microbiology

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Which of the following is a diploid cell destined for a specialized role in the production of gametes?

A) somatic cell B) germ-line cell C) spermatid D) polar body E) ootid

Biology & Microbiology

Which animal does a dolphin or whale most resemble as it swims through water?  

A.  A running lizard B.  A swimming shark C.  A swimming penguin D.  A swimming alligator E.  A running dog Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about how a whale swims? What other information is related to the question? Choose Answer · Given what you now know, what information is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

If a mutation prevented the formation of lignin, which tissue would be most affected?

a. vascular cambium b. parenchyma c. collenchyma d. sclerenchyma e. mesophyll

Biology & Microbiology

A clam is a(n)

A) arthropod. B) mollusk. C) echinoderm. D) chordate. E) arachnid.

Biology & Microbiology