Question 1

Which of the following best describes why viruses are considered obligate intracellular parasites?

Accepted Answer

They require a host cell's machinery to replicate their genetic material and produce new viruses.

Question 2

Which property of a virus determines its attachment to a host cell membrane?

Accepted Answer

The specific proteins (glycoproteins) on the viral surface that bind to host cell receptors

Question 3

A virus with a broad host range can infect multiple species, while a virus with a narrow host range infects only one or a few species. What determines the host range of a virus?

Accepted Answer

The compatibility between viral surface proteins and host cell receptors

Question 4

Which of the following best describes the lytic cycle of a bacteriophage?

Accepted Answer

The virus immediately replicates within the host, causing the cell to burst and release new viruses.

Question 5

Which enzyme do retroviruses use to convert their RNA genome into DNA?

Accepted Answer

Reverse transcriptase

Question 6

The Miller-Urey experiment demonstrated that organic molecules could be synthesized abiotically. Which molecules were primarily produced in their experiment?

Accepted Answer

Amino acids and other small organic molecules

Question 7

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotes have a nucleus, while prokaryotes do not.

Question 8

What is the 'RNA world hypothesis'?

Accepted Answer

The idea that RNA was both the first genetic material and the first catalyst in early life.

Question 9

Which bacterial group is most closely related to the ancestors of mitochondria?

Accepted Answer

Proteobacteria

Question 10

What is the primary function of mycorrhizae in plant nutrition?

Accepted Answer

To increase water and mineral absorption by plants

Question 11

In plants, which generation is haploid and which is diploid?

Accepted Answer

Gametophyte is haploid, sporophyte is diploid

Question 12

Which plant group has the gametophyte as the dominant stage of the life cycle?

Accepted Answer

Mosses (bryophytes)

Question 13

What is the evolutionary significance of the amniotic egg?

Accepted Answer

It enabled vertebrates to reproduce on land by providing a protected environment for the embryo.

Question 14

Which of the following is a characteristic unique to animals?

Accepted Answer

Nervous and muscle tissue

Question 15

Which phylum contains animals with a sac-like body plan and two body forms: polyp and medusa?

Accepted Answer

Cnidaria

Question 16

Which of the following best explains why vaccines are effective against viral diseases?

Accepted Answer

They stimulate the immune system to recognize and respond to specific viral antigens.

Question 17

Which of the following is a real-world example of endosymbiosis?

Accepted Answer

The origin of mitochondria from ancestral proteobacteria

Question 18

Which of the following best describes the function of a seed in plants?

Accepted Answer

To protect and nourish the plant embryo and facilitate its dispersal

Question 19

Which of the following is a major evolutionary advantage of multicellularity?

Accepted Answer

It allows for specialization of cells and division of labor.

Question 20

Which of the following best explains why Archaea are more closely related to Eukaryotes than to Bacteria?

Accepted Answer

They share similar genes and molecular machinery for processes like transcription and translation.

Diversity of Life: Viruses, Prokaryotes, Protists, Plants, Fungi, and Animals (Chapters 17, 24–27) – Study Guide

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