Q: Which equation correctly represents the process of photosynthesis?

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + \text{light energy} \rightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2$$

Question 1

Which of the following best describes the main structural difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a nucleus containing DNA, whereas prokaryotic cells have DNA in the nucleoid region without a membrane.

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 is the independent variable in this experiment?

Accepted Answer

The type of fertilizer used

Question 3

Which of the following statements about hydrogen bonds is correct?

Accepted Answer

Hydrogen bonds are responsible for water's high surface tension and the fact that ice floats.

Question 4

Which equation correctly represents the process of photosynthesis?

Accepted Answer

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + 	ext{light energy} ightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2$$

Question 5

A red blood cell is placed in a hypotonic solution. What will most likely happen to the cell, and why?

Accepted Answer

The cell will swell and possibly burst because water moves into the cell by osmosis.

Question 6

Which of the following best explains why ice floats on liquid water?

Accepted Answer

Hydrogen bonds in ice cause water molecules to be spaced farther apart, making ice less dense than liquid water.

Question 7

Which of the following is a function of ribosomes in a cell?

Accepted Answer

Synthesizing proteins by linking amino acids together

Question 8

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

Accepted Answer

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

Question 9

A patient with a high fever (40°C) is experiencing rapid enzyme denaturation. What is the most likely consequence for cellular function?

Accepted Answer

Enzyme shape will change, reducing their ability to bind substrates and slowing or stopping reactions.

Question 10

Which of the following statements about the cell cycle is correct?

Accepted Answer

Meiosis produces cells with half the chromosome number of the original cell.

Question 11

Which of the following best describes the difference between aerobic and anaerobic respiration?

Accepted Answer

Aerobic respiration requires oxygen and produces more ATP than anaerobic respiration.

Question 12

Which of the following is a correct statement about the structure and function of the plasma membrane?

Accepted Answer

It is a phospholipid bilayer that regulates the movement of substances into and out of the cell.

Question 13

Which of the following best explains why carbon is so important in biological molecules?

Accepted Answer

Carbon can form up to four covalent bonds, allowing for a diversity of stable organic molecules.

Question 14

A student observes a cell under a microscope and notes the presence of a cell wall, chloroplasts, and a large central vacuole. Which type of cell is being observed?

Accepted Answer

Plant cell

Question 15

Which of the following best describes the function of tRNA during translation?

Accepted Answer

tRNA carries amino acids to the ribosome and matches them to the coded mRNA message.

Question 16

Which of the following is a correct comparison between benign and malignant tumors?

Accepted Answer

Benign tumors do not invade nearby tissues, while malignant tumors can metastasize.

Question 17

Which of the following best describes the relationship between diffusion and osmosis?

Accepted Answer

Osmosis is a type of diffusion that specifically involves the movement of water across a selectively permeable membrane.

Question 18

A solution has a pH of 3. Which of the following statements is true about this solution?

Accepted Answer

It is acidic and has a high concentration of $$\mathrm{H}^+$$ ions.

Question 19

Which of the following best describes the role of the active site in enzyme function?

Accepted Answer

The active site is the region where substrates bind and undergo a chemical reaction.

Question 20

Which of the following is a correct statement about the products of cellular respiration?

Accepted Answer

The main products are carbon dioxide, water, and ATP.

General Biology Exam 1 & 2 Study Guide: Cells, Biomolecules, Metabolism, and Cell Division

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드