Question 1

Which of the following best describes the difference between homology and analogy in evolutionary biology?

Accepted Answer

Homology refers to traits inherited from a common ancestor, while analogy refers to traits that arise due to similar environmental pressures.

Question 2

Which of the following is NOT a domain of life?

Accepted Answer

Protista

Question 3

A scientist is testing the effect of a new fertilizer on plant growth. She sets up two groups: one receives the fertilizer, the other does not. What is the independent variable in this experiment?

Accepted Answer

The application of fertilizer

Question 4

Which equation correctly represents the binomial nomenclature for the human species?

Accepted Answer

$$Homo\ sapiens$$

Question 5

Which of the following statements about prokaryotic and eukaryotic cells is correct?

Accepted Answer

Eukaryotic cells have a nucleus, while prokaryotic cells do not.

Question 6

Which of the following best explains why protists are considered polyphyletic?

Accepted Answer

Protists include organisms that do not share a recent common ancestor, but are grouped together based on superficial similarities.

Question 7

Which of the following is a correct statement about the endosymbiotic theory?

Accepted Answer

It proposes that mitochondria and chloroplasts originated as free-living prokaryotes engulfed by ancestral eukaryotic cells.

Question 8

A phylogenetic tree shows a branch point where two species diverge. What does this branch point represent?

Accepted Answer

The most recent common ancestor of the two species.

Question 9

Which of the following is an example of convergent evolution?

Accepted Answer

The development of wings in bats and birds, which evolved independently for flight.

Question 10

Which of the following is a correct formula for calculating species diversity using the Shannon Index?

Accepted Answer

$$H' = -\sum_{i=1}^{S} p_i \log p_i$$

Question 11

Which of the following is NOT a characteristic used to distinguish Archaea from Bacteria?

Accepted Answer

Presence of peptidoglycan in cell walls

Question 12

Which of the following best describes the role of symbiosis in bacterial communities?

Accepted Answer

Symbiosis refers to interactions where both organisms benefit, such as nitrogen-fixing bacteria in plant roots.

Question 13

Which of the following is a correct statement about Gram-positive and Gram-negative bacteria?

Accepted Answer

Gram-positive bacteria have a thick peptidoglycan layer and stain purple, while Gram-negative bacteria have a thin peptidoglycan layer and stain pink.

Question 14

Which of the following is an example of a beneficial use of bacteria in human society?

Accepted Answer

Production of antibiotics such as streptomycin

Question 15

Which process is responsible for genetic recombination in bacteria, allowing for the exchange of genetic material between cells?

Accepted Answer

Conjugation

Question 16

Which of the following is a correct statement about the nutritional diversity of protists?

Accepted Answer

Protists can be autotrophic, heterotrophic, or mixotrophic.

Question 17

Which evidence supports the endosymbiotic theory for the origin of mitochondria and chloroplasts?

Accepted Answer

Mitochondria and chloroplasts contain their own circular DNA similar to prokaryotes.

Question 18

Which of the following is a correct example of a protist acting as a symbiont?

Accepted Answer

Dinoflagellates living inside coral tissues and providing them with nutrients via photosynthesis.

Question 19

Which of the following is a correct statement about the classification of life?

Accepted Answer

The three domains of life are Bacteria, Archaea, and Eukarya.

Question 20

Which of the following is a correct example of a monophyletic group?

Accepted Answer

All mammals, including humans, whales, and bats, descended from a common ancestor.

General Biology Study Guide: Chapters 1, 26, 27, 28

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