Question 1

Which of the following is NOT a characteristic shared by all living things according to the study materials?

Accepted Answer

They can interbreed with any other species

Question 2

Which domain includes organisms that lack a membrane-bound nucleus?

Accepted Answer

Both Domain Bacteria and Domain Archaea

Question 3

A scientist wants to test whether a new fertilizer increases the mass of tomato fruits. What is the dependent variable in this experiment?

Accepted Answer

Mass of tomato fruits

Question 4

Which of the following best describes a scientific theory?

Accepted Answer

A well-tested, broad explanation supported over time

Question 5

In a controlled experiment testing Drug X for blood pressure, what is the independent variable?

Accepted Answer

Receipt of Drug X or placebo

Question 6

Which of the following is a defining feature of humans compared to other primates?

Accepted Answer

Bipedalism

Question 7

Which kingdom within Domain Eukarya contains multicellular, photosynthetic organisms?

Accepted Answer

Kingdom Plantae

Question 8

A student reads an article about a new medical treatment on a blog. Which of the following is the BEST first step to assess the quality of this source?

Accepted Answer

Determine the author's academic or professional credentials

Question 9

Which of the following is an example of inductive reasoning in science?

Accepted Answer

Making a generalization based on repeated observations

Question 10

Why can hypotheses never be proven true, only supported or disproved?

Accepted Answer

Because further testing may reveal exceptions or new information

Question 11

Which of the following is the correct classification for humans?

Accepted Answer

Domain: Eukarya, Kingdom: Animalia, Genus: Homo, Species: sapiens

Question 12

Which of the following is a plausible real-world controversy at the molecular level of human biology?

Accepted Answer

Disposing of radioactive wastes

Question 13

A researcher observes that every winter in the past was colder than the preceding summer and concludes that winter will always be colder than summer. This is an example of:

Accepted Answer

Inductive reasoning

Question 14

Which of the following is a limitation of an experiment that tests the effect of Magic Dirt Garden Soil on tomato fruit mass?

Accepted Answer

It cannot determine the effect on cucumbers or other tomato strains

Question 15

Which of the following is the correct order of steps in the scientific method?

Accepted Answer

Observe and generalize, formulate a hypothesis, make a testable prediction, experiment or observe, modify hypothesis

Question 16

Which of the following is a reason why nuclear power was rejected by many environmental activists, according to the study materials?

Accepted Answer

It was rejected out of fear

Question 17

Which of the following is a critical skill for becoming a scientific thinker?

Accepted Answer

Distinguishing anecdotes from scientific evidence

Question 18

A well-designed experiment must include which of the following features?

Accepted Answer

A control group and random assignment of subjects

Question 19

Which equation best represents the relationship between the independent and dependent variables in a controlled experiment?

Accepted Answer

$$\Delta 	ext{Dependent Variable} = f(	ext{Independent Variable})$$

Question 20

Which of the following sources is considered most reliable for scientific information?

Accepted Answer

Peer-reviewed journals

Introduction to Human Biology: Scientific Foundations and Classification

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