Question 1

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

Accepted Answer

A single muscle cell can contract, but a whole muscle can generate movement that a single cell cannot.

Question 2

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

Accepted Answer

Molecule → Organelle → Cell → Tissue → Organ → Organ System → Organism → Population → Community → Ecosystem

Question 3

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

Accepted Answer

All individuals must survive to reproductive age.

Question 4

In the case of sickle cell anemia, which level(s) of biological organization are directly impacted by the sickle cell mutation and subsequent natural selection?

Accepted Answer

Molecular, cellular, organismal, and population levels

Question 5

Which of the following best describes the process of science?

Accepted Answer

Making observations, forming hypotheses, conducting experiments, analyzing data, and drawing conclusions

Question 6

A researcher is testing the effect of antibiotic concentration on bacterial growth. Which variable is the independent variable?

Accepted Answer

Antibiotic concentration

Question 7

Which of the following is an example of a positive control in an experiment testing the effectiveness of a new antibiotic?

Accepted Answer

A group treated with a known effective antibiotic

Question 8

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

Accepted Answer

Individuals with the AS genotype have increased reproductive success compared to AA or SS individuals in malarial regions.

Question 9

Which of the following is the best example of an emergent property at the ecosystem level?

Accepted Answer

Nutrient cycling and energy flow among organisms and their environment

Question 10

A scientist hypothesizes that increased UV exposure leads to darker skin pigmentation in a population over generations. Which of the following is a key component of a scientific hypothesis?

Accepted Answer

It must be testable and falsifiable.

Question 11

Which of the following best describes the difference between a bar graph and a line graph?

Accepted Answer

A bar graph is used for categorical data, while a line graph is used for continuous data.

Question 12

Which of the following is the correct interpretation of the role of control variables in an experiment?

Accepted Answer

They are kept constant to ensure that the effect of the independent variable can be measured accurately.

Question 13

Which domain of life includes organisms that have membrane-bound organelles and a nucleus?

Accepted Answer

Eukarya

Question 14

A population of insects is exposed to a new pesticide. After several generations, most individuals are resistant to the pesticide. Which condition is necessary for this evolutionary change to be attributed to natural selection?

Accepted Answer

Resistance to the pesticide must be heritable.

Question 15

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

Accepted Answer

Energy flows through ecosystems, while matter cycles within them.

Question 16

A researcher is studying the effect of temperature on enzyme activity. She measures the rate of reaction at 10°C, 20°C, 30°C, and 40°C. Which type of graph would best display her results?

Accepted Answer

Line graph

Question 17

Which of the following is an example of how interactions at the community level can impact human health?

Accepted Answer

Changes in fish populations alter predator-prey relationships, affecting human access to omega-3–rich seafood and cardiovascular health.

Question 18

Which of the following best explains why light-colored beach mice became more common in a population living on light sand?

Accepted Answer

Predators captured dark-colored mice more frequently, so light-colored mice produced more surviving offspring.

Question 19

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

Accepted Answer

If UV exposure increases, then the frequency of dark skin pigmentation alleles will increase in the population.

Question 20

Which of the following best describes why lactase persistence increased in populations with a history of cattle domestication?

Accepted Answer

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

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

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