Q: Which equation correctly represents the process of photosynthesis?

$$6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 1

Which of the following best describes the primary difference between a hypothesis and a scientific theory in biology?

Accepted Answer

A hypothesis is a tentative explanation that can be tested, while a theory is a well-supported explanation based on a broad range of evidence.

Question 2

A scientist is testing the effect of a new fertilizer on plant growth. She sets up two groups: one receives the fertilizer, and the other does not. Which group is the control group?

Accepted Answer

The group that does not receive the fertilizer.

Question 3

Which of the following statements about water is FALSE?

Accepted Answer

Water is a nonpolar molecule, which allows it to dissolve many substances.

Question 4

Which equation correctly represents the process of photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O + 	ext{light energy} ightarrow C_6H_{12}O_6$ + 6O_2$$

Question 5

Which of the following best explains why carbon is found in all organic molecules?

Accepted Answer

Carbon can form up to four covalent bonds, allowing for a variety of stable structures.

Question 6

A red blood cell is placed in a solution and swells until it bursts. Which type of solution was the cell placed in?

Accepted Answer

Hypotonic solution

Question 7

Which of the following is a correct comparison between prokaryotic and eukaryotic cells?

Accepted Answer

Both prokaryotic and eukaryotic cells have a plasma membrane and ribosomes.

Question 8

Which of the following best describes the role of enzymes in biological reactions?

Accepted Answer

Enzymes act as catalysts, speeding up reactions by lowering the activation energy.

Question 9

Which of the following is an example of an exergonic reaction in living organisms?

Accepted Answer

Cellular respiration in animals

Question 10

A patient is unable to break down lactose due to a missing enzyme. Which property of enzymes explains this specificity?

Accepted Answer

Enzymes have an active site that fits specific substrates, as described by the induced-fit model.

Question 11

Which of the following best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids contain only single bonds between carbon atoms, while unsaturated fatty acids contain one or more double bonds.

Question 12

Which of the following is the correct sequence of events in the scientific method?

Accepted Answer

Observation, hypothesis, experiment, discussion, conclusion

Question 13

Which of the following best explains why buffers are important in biological systems?

Accepted Answer

Buffers maintain a stable pH, preventing harmful changes in the internal environment.

Question 14

Which of the following is a function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

Modifying, sorting, and packaging proteins for secretion

Question 15

Which of the following best describes the process of osmosis?

Accepted Answer

Movement of water molecules across a semipermeable membrane from low solute concentration to high solute concentration

Question 16

Which of the following is a correct statement about the ATP/ADP cycle?

Accepted Answer

Energy is released when ATP is converted to ADP and a phosphate group.

Question 17

Which of the following is a correct comparison between mitosis and meiosis?

Accepted Answer

Mitosis results in diploid cells, while meiosis results in haploid cells.

Question 18

Which of the following best describes the role of NAD+ in cellular respiration?

Accepted Answer

NAD+ acts as an electron carrier, accepting electrons during redox reactions.

Question 19

Which of the following is a correct statement about the structure of DNA?

Accepted Answer

The sides of the DNA ladder are composed of alternating sugars and phosphates.

Question 20

Which of the following best explains why a change in the DNA base sequence can affect the structure of a protein?

Accepted Answer

The sequence of DNA bases determines the sequence of amino acids in a protein, so a change can alter the protein's structure and function.

General Biology I: Core Concepts and Learning Objectives

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드