Q: A solution has a pH of 4. What is the concentration of hydrogen ions $$[\mathrm{H}^+] in $$the solution?

$$[\mathrm{H}^+] = 1 \times 10$$^{-4}$$\ \mathrm{M}$$

Question 1

Which of the following best describes the role of water in supporting life at the cellular level?

Accepted Answer

Water provides a medium for chemical reactions, helps regulate temperature, and facilitates transport of substances.

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. She measures plant height weekly. In this experiment, what is the independent variable?

Accepted Answer

The application of fertilizer

Question 3

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy, allowing reactions to occur more rapidly.

Question 4

Which equation correctly represents the process of cellular respiration?

Accepted Answer

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

Question 5

Which of the following best explains why carbon is central to the structure of all biological macromolecules?

Accepted Answer

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

Question 6

A student is observing a cell under a microscope and notes the presence of a nucleus, mitochondria, and chloroplasts. Which type of cell is she most likely observing?

Accepted Answer

A plant cell

Question 7

Which of the following is a correct statement about the difference between mitosis and meiosis?

Accepted Answer

Mitosis is used for growth and repair, while meiosis is used for sexual reproduction.

Question 8

Which of the following best describes the central dogma of molecular biology?

Accepted Answer

DNA is transcribed into RNA, which is then translated into protein.

Question 9

A patient is diagnosed with a genetic disorder caused by a mutation in a single gene. Which process is most directly responsible for passing this mutation from parent to offspring?

Accepted Answer

Meiosis

Question 10

Which of the following is an example of a hypothesis that could be tested using the scientific method?

Accepted Answer

Plants grow taller when exposed to blue light compared to red light.

Question 11

Which of the following best describes the function of the plasma membrane in cells?

Accepted Answer

It regulates the movement of substances into and out of the cell.

Question 12

Which of the following is a correct pairing of a biological macromolecule with its monomer?

Accepted Answer

Carbohydrate – Monosaccharide

Question 13

A solution has a pH of 4. What is the concentration of hydrogen ions $$[\mathrm{H}^+] in $$the solution?

Accepted Answer

$$[\mathrm{H}^+] = 1 	imes 10$$^{-4}$$\ \mathrm{M}$$

Question 14

Which of the following best explains why diversity, equity, and inclusion are important in scientific research and education?

Accepted Answer

They allow for a wider range of perspectives, leading to more innovative solutions.

Question 15

Which of the following is a real-life example of diffusion in biological systems?

Accepted Answer

Oxygen moving from the lungs into the bloodstream

Question 16

Which of the following statements about Mendelian genetics is correct?

Accepted Answer

A heterozygous organism expresses the dominant phenotype.

Question 17

Which of the following best describes the function of mitochondria in eukaryotic cells?

Accepted Answer

They harvest chemical energy from food to produce ATP.

Question 18

A student is designing an experiment to test the effect of temperature on enzyme activity. Which of the following would be the best way to ensure valid results?

Accepted Answer

Keep all variables constant except for temperature.

Question 19

Which of the following is a correct statement about the laws of thermodynamics as they apply to living systems?

Accepted Answer

Energy cannot be created or destroyed, only transformed.

General Biology I (BIO 101) Syllabus and Core Concepts Study Guide

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드