Question 1

Which of the following best describes the function of ion pumps in neurons?

Accepted Answer

They actively transport ions against their concentration gradients using ATP.

Question 2

A patient is experiencing muscle weakness due to a malfunction in neurotransmitter release. Which part of the neuron is most likely affected?

Accepted Answer

Synaptic terminal

Question 3

Which equation best represents the exponential growth model used to estimate population size over time?

Accepted Answer

$$N_t = N_0$ e$$^{r t}$$

Question 4

Which of the following is NOT a major physical component influencing biome distribution?

Accepted Answer

Genetic diversity

Question 5

A population of deer in a forest shows a Type I survivorship curve. What does this indicate about their mortality?

Accepted Answer

Low mortality early in life, most individuals survive to old age

Question 6

Which of the following best describes the difference between open and closed circulatory systems?

Accepted Answer

Closed systems circulate blood entirely within vessels, while open systems allow blood to flow freely among tissues.

Question 7

Which formula is used to calculate carrying capacity ($$K) in $$the logistic growth model?

Accepted Answer

$$\frac{dN}{dt} = rN \left(1 - \frac{N}{K}\right)$$

Question 8

Which of the following is an example of a keystone species in an ecosystem?

Accepted Answer

A predator that regulates the population of herbivores

Question 9

Which process is responsible for the transfer of energy between trophic levels in an ecological pyramid?

Accepted Answer

Consumption

Question 10

Which of the following best explains competitive exclusion?

Accepted Answer

One species outcompetes another, leading to the local extinction of the less competitive species.

Question 11

Which of the following is a correct sequence for the flow of energy in a food web?

Accepted Answer

Primary producers → Primary consumers → Secondary consumers → Tertiary consumers

Question 12

Which of the following is an example of negative feedback in animal physiology?

Accepted Answer

Regulation of blood glucose by insulin

Question 13

Which animal group is most likely to have a double circulatory system?

Accepted Answer

Birds

Question 14

Which of the following is a major difference between regulators and conformers?

Accepted Answer

Regulators maintain internal conditions despite external changes, while conformers allow internal conditions to vary with the environment.

Question 15

Which of the following is NOT a function of arteries?

Accepted Answer

Exchange gases with tissues

Question 16

Which of the following best describes the role of antibodies in the immune system?

Accepted Answer

They bind to antigens and mark pathogens for destruction.

Question 17

Which reproductive strategy is most likely to result in high parental investment per offspring?

Accepted Answer

Internal fertilization

Question 18

Which of the following is a correct definition of community ecology?

Accepted Answer

The study of interactions among populations of different species in a given area

Question 19

Which of the following is a major threat to biodiversity?

Accepted Answer

Habitat destruction

Question 20

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They recycle nutrients by breaking down dead organic matter.

General Biology Study Guide: Nervous System, Ecology, Animal Physiology, and More

Study Guide - Practice Questions