Question 1

Which statement best reflects the current scientific understanding of human biological variation?

Accepted Answer

Human biological variation is continuous and best described by geographic clines.

Question 2

Franz Boas contributed to the understanding of human variation by demonstrating that:

Accepted Answer

Environmental factors can influence physical traits such as skull shape.

Question 3

According to W.E.B. Du Bois, what is the primary cause of health disparities among different populations?

Accepted Answer

Social inequality.

Question 4

Which of the following best describes a 'cline' in biological anthropology?

Accepted Answer

A gradual change in a trait or characteristic across geographic space.

Question 5

Why are racial categories considered flawed in explaining human genetic variation?

Accepted Answer

They are based on social constructs rather than biological facts.

Question 6

A population living at high altitudes adapts to lower oxygen levels primarily by:

Accepted Answer

Developing wider chests and increased lung volume.

Question 7

Which equation best represents the calculation of Body Mass Index (BMI)?

Accepted Answer

$$ BMI = \frac{weight\ (kg)}{$$height^2$$\ (m^2$)} $$

Question 8

Which adaptation is most likely to occur in populations exposed to high levels of solar radiation?

Accepted Answer

Development of darker skin to protect against UV radiation.

Question 9

A child exposed to malnutrition during early development is at increased risk for which long-term health outcome?

Accepted Answer

Compromised immune system and increased susceptibility to infectious diseases.

Question 10

Which of the following is a developmental (ontogenetic) adaptation?

Accepted Answer

Increased lung capacity in individuals raised at high altitude.

Question 11

What is the primary function of melanin in human skin?

Accepted Answer

To protect against ultraviolet (UV) radiation.

Question 12

Which life stage is characterized by the most rapid rate of growth and the beginning of deciduous dentition?

Accepted Answer

Infancy (first two years)

Question 13

Which of the following best explains the 'grandmother effect' in human life history?

Accepted Answer

Grandmothers assist in caring for grandchildren, increasing their own inclusive fitness.

Question 14

Which physiological adaptation helps humans cope with heat stress?

Accepted Answer

Sweating and increased skin surface area

Question 15

A population experiencing a 'secular trend' in height over several generations is most likely responding to:

Accepted Answer

Changes in nutrition and health care.

Question 16

Which equation correctly expresses the relationship between metabolic requirement and daily energy expenditure?

Accepted Answer

$$ Daily\ Energy\ Expenditure = Metabolic\ Requirement + Activity\ Energy\ Expenditure $$

Question 17

Which of the following is a consequence of overnutrition in modern populations?

Accepted Answer

Increased rates of obesity and cardiovascular disease.

Question 18

Which process is responsible for bone growth at the epiphysis?

Accepted Answer

Cell division at the growth plate.

Question 19

Which adaptation is most likely to occur in populations exposed to cold stress?

Accepted Answer

Vasoconstriction and increased basal metabolic rate.

Question 20

Which of the following best describes the relationship between physical activity and bone density?

Accepted Answer

Physical activity stimulates osteoblasts, increasing bone mass.

Biology in the Present: Human Variation, Growth, and Adaptation

Study Guide - Practice Questions