Question 1

Which of the following statements about mutagens and carcinogens is correct?

Accepted Answer

Mutagens are usually not carcinogens.

Question 2

If a DNA molecule is copied to make two new DNA molecules, what percentage of the parent DNA is found in each daughter molecule?

Accepted Answer

$$50\% of $$the parent DNA

Question 3

Which of the following is a result of a homozygous recessive condition in cats?

Accepted Answer

Is a result of alleles on the X chromosome

Question 4

Which statement about the flow of genetic information is false?

Accepted Answer

Transcription occurs in the cytoplasm of eukaryotic cells.

Question 5

Which statement regarding DNA packing is false?

Accepted Answer

DNA packing tends to promote gene expression.

Question 6

Which process enables a single gene to code for more than one polypeptide?

Accepted Answer

Alternative RNA splicing

Question 7

Which of the following is most likely to be a carcinogen?

Accepted Answer

X-rays and ultraviolet radiation

Question 8

Which statement regarding RNA is false?

Accepted Answer

RNA contains the sugar deoxyribose.

Question 9

Which statement regarding a DNA double helix is true?

Accepted Answer

The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine.

Question 10

Which step occurs when RNA polymerase attaches to the promoter DNA?

Accepted Answer

Initiation of a new RNA molecule

Question 11

Considering only the steps that take place during translation, which item is unnecessary for translation to occur?

Accepted Answer

DNA

Question 12

Which of the following is NOT a function of mitosis?

Accepted Answer

Mitosis promotes genetic diversity.

Question 13

Which statement regarding Down syndrome is false?

Accepted Answer

Down syndrome is least likely to be seen in the infants of mothers over 40.

Question 14

If a chromosome fragment breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called:

Accepted Answer

inversion

Question 15

Which of the following molecules is NOT required to express a gene in eukaryotic cells?

Accepted Answer

Repressor protein

Question 16

Which of the following is a correct statement about adult stem cells?

Accepted Answer

Adult stem cells have limited therapeutic potential because their developmental potential is limited to certain tissues.

Question 17

Which of the following is considered an unresolved ethical issue regarding reproductive cloning?

Accepted Answer

The reproductive cloning of humans

Question 18

Which phase of mitosis is characterized by the alignment of chromosomes at the cell's equator?

Accepted Answer

Metaphase

Question 19

Which feature of plant cell division distinguishes it from animal cell division?

Accepted Answer

Formation of a cell plate

Question 20

Varieties of plants in which self-fertilization produces offspring that are identical to the parents are referred to as:

Accepted Answer

true-breeding

General Biology Exam Questions: Genetics, Cell Division, and Molecular Biology

Guida di studio - Domande di pratica

Study guide - Flashcard