Q: Which equation correctly represents the process of photosynthesis?

$$\text{Carbon dioxide} + \text{Water} + \text{light energy} \rightarrow \text{Carbohydrate (food)} + \text{Oxygen}$$

Question 1

Which of the following statements best describes the difference between a scientific theory and a hypothesis?

Accepted Answer

A theory is a well-supported framework that explains natural phenomena and generates testable hypotheses, while a hypothesis is a specific, testable prediction.

Question 2

Which of the following is NOT a characteristic shared by all living things?

Accepted Answer

Presence of a cell wall

Question 3

A scientist observes that all swans she has seen are white and concludes that all swans are white. This is an example of:

Accepted Answer

Inductive reasoning

Question 4

Which of the following best explains why scientific models can never be proven true?

Accepted Answer

Because new evidence can always lead to revision or rejection of models.

Question 5

In a controlled experiment testing the effect of a new fertilizer on plant growth, which group receives the fertilizer?

Accepted Answer

Experimental group

Question 6

Which of the following is the correct order of taxonomic classification from most inclusive to least inclusive?

Accepted Answer

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 7

Which domain includes organisms that typically live in extreme environments and are distinguished by their ribosomal RNA sequences?

Accepted Answer

Domain Archaea

Question 8

Which of the following is a correct example of binomial nomenclature?

Accepted Answer

Homo sapiens

Question 9

Which kingdom within Domain Eukarya contains organisms with cell walls made of chitin and are mostly decomposers?

Accepted Answer

Kingdom Fungi

Question 10

Which process do producers use to manufacture their own food from simple materials?

Accepted Answer

Photosynthesis

Question 11

Which equation correctly represents the process of photosynthesis?

Accepted Answer

$$	ext{Carbon dioxide} + 	ext{Water} + 	ext{light energy} ightarrow 	ext{Carbohydrate (food)} + 	ext{Oxygen}$$

Question 12

Which of the following is a function of decomposers in an ecosystem?

Accepted Answer

Obtaining energy by breaking down dead bodies and recycling nutrients

Question 13

A scientist wants to test whether a new drug reduces blood pressure. She gives the drug to one group and a placebo to another. What is the purpose of the placebo group?

Accepted Answer

To control for psychological effects and isolate the drug's effect

Question 14

Which of the following best describes homeostasis?

Accepted Answer

The tendency of an organism to maintain a relatively constant internal environment

Question 15

Which of the following is NOT a unifying theme of biology?

Accepted Answer

Astrology and fate

Question 16

Which statement about the scientific method is correct?

Accepted Answer

It is a systematic process that involves testable predictions and controlled experiments.

Question 17

Which of the following is the basic unit of life, both in structure and function?

Accepted Answer

Cell

Question 18

Which of the following is true about the transfer of genetic information in living systems?

Accepted Answer

Genetic information is encoded in DNA and passed from one generation to the next.

Question 19

Which of the following is a correct example of deductive reasoning?

Accepted Answer

All mammals have hair. Whales are mammals. Therefore, whales have hair.

Question 20

Which of the following is a plausible consequence of using a small sample size in a biological experiment?

Accepted Answer

Results may be less reliable and prone to error in estimating the population.

Principles of Biology: Scientific Method, Characteristics of Life, and Biological Classification

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