Question 1

Which of the following best describes the difference between microevolution and macroevolution?

Accepted Answer

Microevolution involves changes in allele frequencies within a population over time, while macroevolution refers to broad patterns of evolutionary change above the species level.

Question 2

Which reproductive isolation mechanism is illustrated when two species of frogs breed at different times of the year?

Accepted Answer

Temporal isolation

Question 3

A population of birds is separated by a mountain range, preventing gene flow. Over time, the populations evolve into distinct species. This is an example of:

Accepted Answer

Allopatric speciation

Question 4

Which equation represents the Hardy-Weinberg equilibrium for a gene with two alleles, $$p$$ and $$q$$?

Accepted Answer

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

Question 5

Which of the following is NOT a feature of prokaryotic cells?

Accepted Answer

Presence of a nucleus

Question 6

Gram staining differentiates bacteria based on:

Accepted Answer

The structure of their cell wall

Question 7

Which metabolic strategy is used by organisms that obtain energy from inorganic chemicals and carbon from CO$$_2$$?

Accepted Answer

Chemoautotrophy

Question 8

A clade is defined as:

Accepted Answer

A group consisting of an ancestor and all its descendants

Question 9

Which of the following best describes a polyphyletic group?

Accepted Answer

A group that includes species with similar traits but not their common ancestor

Question 10

Which process increases genetic diversity in prokaryotes by the uptake of foreign DNA from the environment?

Accepted Answer

Transformation

Question 11

Which of the following is a real-world example of symbiosis involving prokaryotes?

Accepted Answer

Nitrogen-fixing bacteria in the roots of legumes

Question 12

Which of the following is true about alternation of generations in protists?

Accepted Answer

It involves both haploid and diploid multicellular stages

Question 13

Which of the following is an example of convergent evolution?

Accepted Answer

Wings in bats and birds

Question 14

Which principle is used to construct phylogenetic trees by minimizing the total number of evolutionary changes?

Accepted Answer

Principle of parsimony

Question 15

Which of the following is NOT a characteristic of eukaryotic cells?

Accepted Answer

Circular DNA

Question 16

Which group of protists is characterized by having an internal silica skeleton?

Accepted Answer

Radiolarians

Question 17

Which of the following best explains why obligate anaerobes cannot survive in the presence of oxygen?

Accepted Answer

They lack enzymes to detoxify reactive oxygen species

Question 18

Which of the following is a valid clade?

Accepted Answer

A group containing all descendants of a common ancestor

Question 19

Which of the following is a primary product in many aquatic ecosystems produced by photosynthetic protists?

Accepted Answer

Oxygen

Question 20

Which process is responsible for the rapid spread of antibiotic resistance among bacterial populations?

Accepted Answer

Genetic recombination via conjugation

Speciation, Phylogeny, Prokaryotes, and Protists: Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards