Question 1

Which of the following best illustrates the concept of an emergent property in biological systems?

Accepted Answer

A functioning heart can pump blood, a property not present in individual heart cells.

Question 2

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

Accepted Answer

Organelles → Cells → Tissues → Organs → Organ Systems → Organisms

Question 3

A patient with a genetic mutation affecting the LDL cholesterol transporter develops atherosclerosis. At which level of biological organization does this mutation first exert its effect?

Accepted Answer

Molecular

Question 4

Which of the following is NOT a requirement for natural selection to occur in a population?

Accepted Answer

All individuals must survive to reproduce

Question 5

In the case of sickle cell anemia, which level(s) of biological organization are impacted by the sickle cell mutation and natural selection? Select the most comprehensive answer.

Accepted Answer

Molecular, cellular, organismal, and population levels

Question 6

Which of the following best describes the process of science?

Accepted Answer

A cyclical process involving observation, hypothesis formation, experimentation, and revision

Question 7

A researcher is testing the effect of antibiotic concentration on bacterial growth. Which variable should be plotted on the x-axis of a line graph?

Accepted Answer

Antibiotic concentration

Question 8

Which of the following is a scientific hypothesis?

Accepted Answer

If UV exposure is lower, then individuals with lighter skin will have higher vitamin D synthesis.

Question 9

A scientist wants to compare the average number of bird species in areas with different pollution levels. Which type of graph is most appropriate for this data?

Accepted Answer

Bar graph

Question 10

In an experiment, the number of solute molecules diffusing across a membrane is measured at different time intervals. Which type of graph best displays this data?

Accepted Answer

Line graph

Question 11

Which of the following best explains why both the A and S alleles for hemoglobin persist in populations where malaria is common?

Accepted Answer

AS individuals have greater reproductive success than AA or SS individuals in malarial regions.

Question 12

A population of beach mice colonizes a new area with light-colored sand. After many generations, most mice are light-colored. Which observation would best support that this change is due to natural selection?

Accepted Answer

Predators catch dark mice more often, and light mice produce more surviving offspring.

Question 13

Which of the following is an example of a control variable in an experiment testing the effect of temperature on enzyme activity?

Accepted Answer

The concentration of the enzyme used in all test groups

Question 14

Which of the following best describes the relationship between energy and matter in biological systems?

Accepted Answer

Energy flows through ecosystems, while matter cycles.

Question 15

Which of the following is a correct statement about the three domains of life?

Accepted Answer

Eukarya includes animals, plants, fungi, and protists.

Question 16

A researcher is studying the effect of caffeine dosage on reaction time. Which is the independent variable?

Accepted Answer

Caffeine dosage

Question 17

In a human population with a history of cattle domestication, which observation is MOST necessary to support natural selection as the explanation for increased lactase persistence?

Accepted Answer

Lactase-persistence variants are inherited, and individuals carrying them produced more surviving offspring.

Question 18

A group of humans migrates to a region with much lower UV radiation. Which sequence best predicts how natural selection could alter skin pigmentation over generations?

Accepted Answer

Heritable pigmentation variation → reduced UV creates different physiological costs and benefits among variants → some variants have greater reproductive success → allele frequencies change.

Question 19

A scientist collects data on the effect of increasing NaCl concentration on the diffusion rate of chloride ions. Which type of graph is most appropriate to visualize the relationship?

Accepted Answer

Scatter plot

Question 20

Which of the following best describes an emergent property?

Accepted Answer

A property that arises from the arrangement and interaction of parts within a system.

General Biology Chapter 1 Study Guide: Unifying Themes, Natural Selection, Scientific Inquiry, and Data Interpretation

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