Question 1

Which of the following best describes the difference between subjective and objective observations in scientific research?

Accepted Answer

Subjective observations are based on personal opinions and feelings, while objective observations are based on measurable facts.

Question 2

A scientist is testing the effect of sunlight on plant growth. She measures the height of plants exposed to different amounts of sunlight. In this experiment, what is the dependent variable?

Accepted Answer

The height of the plants

Question 3

Which of the following is the correct order of biological organization from smallest to largest?

Accepted Answer

Cell $$\rightarrow$$ Tissue $$\rightarrow$$ Organ $$\rightarrow$$ Organ System $$\rightarrow$$ Organism

Question 4

Which statement best explains the concept of ecosystem services?

Accepted Answer

Ecosystem services are benefits provided by biodiversity, such as medicines, climate regulation, and food.

Question 5

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

Accepted Answer

A species with low abundance but a large impact on ecosystem structure and function.

Question 6

Which term describes the retention of juvenile traits into adulthood?

Accepted Answer

Paedomorphism

Question 7

A population of fish in a lake is measured for average length. The mean is calculated as $$\bar{x} = \frac{\sum x_i}{n}. $$What does $$n$$ represent in this equation?

Accepted Answer

The total number of fish measured

Question 8

Which of the following best describes the difference between homologous and analogous traits?

Accepted Answer

Homologous traits share ancestry and structure, while analogous traits have similar function but different evolutionary origins.

Question 9

Which of the following is NOT a domain in the taxonomic classification of life?

Accepted Answer

Protista

Question 10

Which process describes the increase in nutrients in a body of water, often leading to excessive growth of algae?

Accepted Answer

Eutrophication

Question 11

Which of the following best describes the scientific method?

Accepted Answer

A process involving observation, hypothesis formation, experimentation, and conclusion.

Question 12

Which of the following is a primary consumer in a food chain?

Accepted Answer

A herbivore that eats plants

Question 13

Which of the following best describes entropy in the context of ecosystems?

Accepted Answer

Entropy is a measure of randomness and disorder, which tends to increase over time.

Question 14

A scientist wants to test whether fertilizer increases plant growth. She sets up two groups: one with fertilizer and one without. What is the independent variable in this experiment?

Accepted Answer

The presence or absence of fertilizer

Question 15

Which of the following is an example of a biotic factor in an ecosystem?

Accepted Answer

The population of bacteria in the soil

Question 16

Which formula correctly represents the Law of Conservation of Mass and Energy?

Accepted Answer

$$E = mc^2$

Question 17

Which of the following best describes a niche in an ecosystem?

Accepted Answer

The specific role or function of an organism within its ecosystem

Question 18

Which of the following is an example of kinetic energy?

Accepted Answer

A moving object, such as a rolling ball

Question 19

Which of the following best describes the difference between precision and accuracy?

Accepted Answer

Precision refers to how close repeated measurements are to each other, while accuracy refers to how close measurements are to the true value.

Question 20

Which of the following is a correct example of a scientific hypothesis?

Accepted Answer

If fertilizer is added to soil, then plant growth will increase.

Foundations of General Biology: Scientific Method, Ecology, and Evolution

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