Q: Which equation correctly represents the process of photosynthesis?

$$\text{CO}_2 + \text{H}_2\text{O} + \text{light energy} \rightarrow \text{Carbohydrate (food)} + \text{O}_2$$

Question 1

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

Accepted Answer

A theory is a broad framework supported by evidence, while a hypothesis is a specific, testable prediction.

Question 2

A scientist observes that all the birds she has studied have wings. She concludes that all birds have wings. What type of reasoning is she using?

Accepted Answer

Inductive reasoning

Question 3

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

Accepted Answer

Presence of a cell wall

Question 4

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

Accepted Answer

Experimental group

Question 5

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 6

Which equation correctly represents the process of photosynthesis?

Accepted Answer

$$	ext{CO}_2 + 	ext{H}_2	ext{O} + 	ext{light energy} ightarrow 	ext{Carbohydrate (food)} + 	ext{O}_2$$

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

A multicellular organism with cell walls made of chitin that decomposes organic matter most likely belongs to which kingdom?

Accepted Answer

Kingdom Fungi

Question 9

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

Accepted Answer

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

Question 10

Which statement about the binomial system of nomenclature is correct?

Accepted Answer

The genus name is capitalized, the specific epithet is lowercase, and the full name is italicized.

Question 11

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They recycle nutrients from dead bodies and waste products back to living organisms.

Question 12

Which of the following is a unifying theme in biology that explains the diversity and unity of life?

Accepted Answer

Evolution

Question 13

A student claims that because two variables are correlated, one must cause the other. Why is this reasoning flawed?

Accepted Answer

Correlation does not equal causation; other factors may be involved.

Question 14

Which of the following is an example of information transfer in living systems?

Accepted Answer

Hormones signaling between cells

Question 15

Which of the following is true about the cell as a unit of life?

Accepted Answer

Cells are the basic unit of structure and function in all living things.

Question 16

Which of the following is a correct statement about metabolism?

Accepted Answer

Metabolism is the sum of all chemical reactions and energy transformations in a cell.

Question 17

A scientist wants to test whether a new drug affects heart rate. 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 impact

Question 18

Which of the following best describes homeostasis?

Accepted Answer

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

Question 19

Which of the following is a producer in an ecosystem?

Accepted Answer

A green plant

Question 20

Which of the following is the correct equation for oxidative respiration in cells?

Accepted Answer

$$	ext{Carbohydrate (food)} + 	ext{O}_2 ightarrow 	ext{CO}_2 + 	ext{H}_2	ext{O} + 	ext{energy}$$

Principles of Biology: Scientific Method, Characteristics of Life, and Taxonomy

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