Question 1

Which of the following best describes the modern evolutionary synthesis?

Accepted Answer

It combines Mendelian genetics with Darwinian natural selection to explain how evolution occurs at the genetic level.

Question 2

A population of beetles is exposed to a pesticide. After several generations, most beetles are resistant. Which evolutionary process best explains this change?

Accepted Answer

Natural selection

Question 3

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

Accepted Answer

Prokaryotic cells lack membrane-bound organelles, while eukaryotic cells have them.

Question 4

Which of the following equations represents the Hardy-Weinberg equilibrium for allele frequencies?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

Question 5

Which of the following is an example of a postzygotic reproductive barrier?

Accepted Answer

Hybrid offspring are sterile and cannot reproduce.

Question 6

Which of the following best illustrates the concept of homeostasis in animal physiology?

Accepted Answer

Regulation of blood glucose levels by insulin and glucagon.

Question 7

Which of the following is a correct statement about the adaptive advantage of sexual reproduction?

Accepted Answer

It increases genetic variation, which can enhance survival in changing environments.

Question 8

Which of the following is the correct order of taxonomic ranks from most inclusive to least inclusive?

Accepted Answer

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 9

A scientist discovers a new organism that is multicellular, autotrophic, and has cell walls made of cellulose. To which kingdom does this organism most likely belong?

Accepted Answer

Plantae

Question 10

Which of the following best describes the relationship between geologic change and evolutionary trends?

Accepted Answer

Major geologic events, such as mass extinctions, can lead to rapid evolutionary diversification of surviving lineages.

Question 11

Which of the following is a defining characteristic of the phylum Arthropoda?

Accepted Answer

Jointed appendages and an exoskeleton made of chitin.

Question 12

Which process is most responsible for the formation of new species in the Galápagos finches?

Accepted Answer

Adaptive radiation

Question 13

Which of the following is a correct application of the scientific method in a biology laboratory?

Accepted Answer

Formulating a hypothesis, designing an experiment, collecting data, and analyzing results.

Question 14

Which of the following best explains why fungi are classified in their own kingdom and not with plants?

Accepted Answer

Fungi are heterotrophic and absorb nutrients, while plants are autotrophic and photosynthesize.

Question 15

Which of the following is an example of microevolution?

Accepted Answer

A change in allele frequency in a population of moths over several generations.

Question 16

Which of the following is a correct statement about phylogenetic trees?

Accepted Answer

They represent hypotheses about evolutionary relationships among organisms.

Question 17

Which of the following is a real-world example of gene flow?

Accepted Answer

Pollen from one population of wildflowers fertilizes plants in a neighboring population, introducing new alleles.

Question 18

Which of the following best describes the function of the lophotrochozoan feeding structure known as a lophophore?

Accepted Answer

It is a ciliated structure used for suspension feeding.

Question 19

Which of the following is a correct comparison between sexual and asexual life cycles?

Accepted Answer

Sexual life cycles involve meiosis and fertilization, while asexual life cycles do not.

Question 20

Which of the following is a plausible consequence of a mass extinction event?

Accepted Answer

Rapid diversification of surviving lineages into newly available ecological niches.

Biology II for Science Majors (BIOL 1407) Syllabus and Course Structure

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