Question 1

Which of the following best describes a behavioral response in ecology?

Accepted Answer

A learned behavior that increases survival/reproduction.

Question 2

Which equation correctly represents exponential population growth?

Accepted Answer

$$\frac{dN}{dt} = rN$$

Question 3

A population of deer in a forest is limited by food availability. What type of limiting factor is this?

Accepted Answer

Density-dependent factor

Question 4

Which of the following is an example of mutualism?

Accepted Answer

Bees pollinating flowers while obtaining nectar

Question 5

What does the diversity index formula $$D = 1 - \sum \left( \frac{n}{N} \$$right)^2$$ measure?

Accepted Answer

The probability that two individuals randomly selected from a sample will belong to different species

Question 6

Which process is responsible for the separation of sister chromatids during mitosis?

Accepted Answer

Anaphase

Question 7

Which of the following is NOT a mechanism that increases genetic variation during meiosis?

Accepted Answer

DNA replication

Question 8

What is the role of DNA polymerase during DNA replication?

Accepted Answer

It adds nucleotides to the growing DNA strand.

Question 9

Which of the following best describes the Hardy-Weinberg Principle?

Accepted Answer

It predicts allele and genotype frequencies will remain constant in a population if certain conditions are met.

Question 10

Which of the following is a biotic factor that can affect population size?

Accepted Answer

Predation

Question 11

What is the main function of ribosomes in a cell?

Accepted Answer

Protein synthesis

Question 12

Which of the following is an example of a density-independent factor?

Accepted Answer

Flood

Question 13

Which of the following best describes a keystone species?

Accepted Answer

A species whose impact on its ecosystem is disproportionately large relative to its abundance

Question 14

Which of the following is a correct statement about the nitrogen cycle?

Accepted Answer

Nitrogen is converted to usable forms by bacteria through nitrogen fixation.

Question 15

Which of the following is a postzygotic reproductive barrier?

Accepted Answer

Hybrid sterility

Question 16

Which phase of mitosis is characterized by the alignment of chromosomes along the cell's equator?

Accepted Answer

Metaphase

Question 17

Which of the following is a real-world example of natural selection?

Accepted Answer

The development of antibiotic resistance in bacteria

Question 18

Which of the following best explains why crossing over during meiosis is significant?

Accepted Answer

It increases genetic variation among offspring.

Question 19

Which of the following is a correct description of gene flow?

Accepted Answer

The movement of alleles between populations due to migration

Question 20

Which of the following is a consequence of a mutation in a gene coding for a protein?

Accepted Answer

The protein may have altered structure and function

General Biology: Ecology, Evolution, Gene Expression, and Heredity Study Guide

Study Guide - Practice Questions