Question 1

Which enzyme is responsible for synthesizing the RNA primer during DNA replication, as shown in the replication fork diagram?

Accepted Answer

Primase

Question 2

During the cell cycle, which phase is primarily responsible for doubling the DNA content in preparation for cell division?

Accepted Answer

S phase

Question 3

In the process of RNA splicing, which segments are removed from the pre-mRNA before it exits the nucleus?

Accepted Answer

Introns

Question 4

Which site in the ribosome is responsible for ejecting tRNA after its amino acid has been added to the growing polypeptide chain?

Accepted Answer

E site

Question 5

If two phenotypically normal parents (carriers) for a recessive disease have a child, what is the probability that their next two children will both be affected by the disease? Use $$P = (\frac{1}{4})^2$.

Accepted Answer

$$\frac{1}{16}$$

Question 6

Which of the following events is unique to meiosis I and contributes most to genetic variation?

Accepted Answer

Crossing over between homologous chromosomes

Question 7

During DNA replication, which strand is synthesized continuously toward the replication fork?

Accepted Answer

Leading strand

Question 8

Which law of Mendel explains the random alignment of homologous chromosomes during metaphase I of meiosis?

Accepted Answer

Law of Independent Assortment

Question 9

In the central dogma, which molecule acts as the template for translation?

Accepted Answer

mRNA

Question 10

Which of the following is NOT a function of the G1 phase in the cell cycle?

Accepted Answer

DNA replication

Question 11

Which strand is used as the template for transcription when the promoter region is located on the 5' to 3' strand?

Accepted Answer

Bottom strand (3' to 5')

Question 12

Which enzyme is responsible for joining Okazaki fragments on the lagging strand during DNA replication?

Accepted Answer

Ligase

Question 13

During mitosis, at which stage do chromosomes line up in the middle of the cell?

Accepted Answer

Metaphase

Question 14

Which biomolecule makes up promoter sequences in the central dogma?

Accepted Answer

DNA

Question 15

Which of the following is NOT a source of genetic variation in meiosis?

Accepted Answer

Cytokinesis

Question 16

In translation, which RNA molecule contains the anticodon that pairs with the mRNA codon?

Accepted Answer

tRNA

Question 17

Which event occurs during anaphase of mitosis?

Accepted Answer

Sister chromatids are pulled apart

Question 18

Which process is responsible for the random combination of gametes during fertilization?

Accepted Answer

Random fertilization

Question 19

Which step in meiosis II is analogous to the separation of sister chromatids in mitosis?

Accepted Answer

Anaphase II

Question 20

Which of the following is a multi-step process that involves both transcription and translation?

Accepted Answer

Protein synthesis

Central Dogma, Cell Division, and Genetic Variation: Study Guide for General Biology

Guida di studio - Domande di pratica

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