Practice Test

Question 1

A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?

Revolt · Accepted Answer

D: thymine, guanine, guanine, and cytosine

Question 2

Which series of diagrams correctly represents the order of mitosis?

Revolt · Accepted Answer

B: Image with description The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromosomes line up at the center. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the cell is divided.

Question 3

Which part of cell division is different in plant and animal cells?

Revolt · Accepted Answer

C: cytokinesis

Question 4

Which is the first type of cell to differentiate?

Revolt · Accepted Answer

D: neuron

Question 5

A mutation causes a sequence of DNA that has the nucleotides TTG to be changed to TCG. The resulting protein has a different sequence of amino acids. Which type of mutation is this?

Revolt · Accepted Answer

D: missense

Question 6

If an organism's diploid number is 12, what would be its haploid number?

Revolt · Accepted Answer

D: 6

Question 7

Which does not occur during translation?

Revolt · Accepted Answer

D: DNA is transcribed into a complementary strand of mRNA.

Question 8

Which best describes stem cells?

Revolt · Accepted Answer

D: Differentiation produces specialized cells from stem cells.

Question 9

Which step in transcription occurs first?

Revolt · Accepted Answer

C: RNA polymerase attaches to the promoter.

Question 10

Which best defines a diploid cell during meiosis?

Revolt · Accepted Answer

C: a cell that has double the number of chromosomes as the daughter cell

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