Q: Which equation correctly represents the summary of cellular respiration?

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

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

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

Question 1

Which of the following best describes an emergent property in biology?

Accepted Answer

A property that arises at each new level of biological organization, not present at the preceding level.

Question 2

Which equation correctly represents the summary of cellular respiration?

Accepted Answer

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

Question 3

A student is asked to distinguish between prokaryotic and eukaryotic cells. Which feature is unique to eukaryotic cells?

Accepted Answer

Presence of membrane-bound organelles

Question 4

Which of the following is an example of a negative feedback mechanism in biological systems?

Accepted Answer

Release of insulin to lower blood glucose levels

Question 5

Which chemical bond is the strongest in an aqueous biological environment?

Accepted Answer

Covalent bond

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

Enzymes lower the activation energy, speeding up reactions.

Question 8

Which of the following is a correct comparison between anabolism and catabolism?

Accepted Answer

Anabolism builds molecules and requires energy; catabolism breaks down molecules and releases energy.

Question 9

Which of the following is a real-world example of the Second Law of Thermodynamics?

Accepted Answer

A hot cup of coffee cooling down to room temperature over time.

Question 10

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

Accepted Answer

Buffers maintain a stable pH by neutralizing acids and bases.

Question 11

Which of the following is a correct summary equation for photosynthesis?

Accepted Answer

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

Question 12

Which of the following statements about the scientific method is correct?

Accepted Answer

Experiments are designed to test predictions derived from hypotheses.

Question 13

Which of the following best describes the difference between passive and active transport across a cell membrane?

Accepted Answer

Passive transport moves substances down their concentration gradient without energy input; active transport requires energy to move substances against their gradient.

Question 14

Which of the following is a correct application of Mendel’s law of independent assortment?

Accepted Answer

Alleles for different genes assort independently if they are on different chromosomes.

Question 15

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

Accepted Answer

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

Question 16

Which of the following is a real-world example of positive feedback?

Accepted Answer

Amplification of uterine contractions during childbirth.

Question 17

Which of the following best describes the difference between DNA and RNA?

Accepted Answer

DNA is usually double-stranded; RNA is usually single-stranded.

Question 18

Which of the following is a correct statement about the First Law of Thermodynamics?

Accepted Answer

Energy can be transferred and transformed, but not created or destroyed.

Question 19

A student is analyzing a scenario where a cell is placed in a hypertonic solution. What will most likely happen to the cell?

Accepted Answer

The cell will lose water and shrink.

BIOL 1406 Course Syllabus and Study Guide: Foundations of Biology

Study Guide - Practice Questions

Study Guide - Flashcards