Q: Which of the following equations represents the overall process of cellular respiration?

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

Question 1

Which of the following best describes the role of hydrogen bonds in the properties of water that are essential for life?

Accepted Answer

Hydrogen bonds result in water's high cohesion, surface tension, and ability to moderate temperature.

Question 2

A scientist is designing an experiment to test the effect of pH on enzyme activity. Which of the following is the best example of a controlled variable in this experiment?

Accepted Answer

The concentration of the enzyme used in each trial.

Question 3

Which equation correctly represents the dehydration synthesis reaction that forms a disaccharide from two monosaccharides?

Accepted Answer

$$C_6H_{12}O_6$ + C_6H_{12}O_6$ \rightarrow C$$_{12}$$H_{22}O$$_{11} + H_2O$

Question 4

Which of the following statements about the Miller-Urey experiment is correct?

Accepted Answer

It demonstrated that organic molecules could form spontaneously under early Earth conditions.

Question 5

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

Accepted Answer

Water will move out of the cell, causing it to shrink.

Question 6

Which of the following best explains the endosymbiotic hypothesis for the origin of eukaryotic cells?

Accepted Answer

Eukaryotic cells evolved from prokaryotic cells by engulfing other prokaryotes that became organelles.

Question 7

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

Accepted Answer

Modification and sorting of proteins for secretion or delivery to other organelles.

Question 8

Which of the following equations represents the overall process of cellular respiration?

Accepted Answer

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

Question 9

Which of the following best describes the role of NADH and FADH$$_2 in $$cellular respiration?

Accepted Answer

They donate electrons to the electron transport chain, leading to ATP production.

Question 10

Which process is responsible for the movement of water across a cell membrane from an area of low solute concentration to an area of high solute concentration?

Accepted Answer

Osmosis

Question 11

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy required for a reaction to occur.

Question 12

Which of the following is a correct description of the light-dependent reactions of photosynthesis?

Accepted Answer

They produce ATP and NADPH, which are used in the Calvin cycle.

Question 13

Which of the following best explains why phospholipids form bilayers in biological membranes?

Accepted Answer

Their hydrophilic heads interact with water while their hydrophobic tails avoid water.

Question 14

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

Accepted Answer

DNA consists of two antiparallel strands held together by hydrogen bonds between complementary bases.

Question 15

Which of the following is a function of proteins in biological systems?

Accepted Answer

Catalyzing biochemical reactions as enzymes.

Question 16

Which of the following best describes the process of facilitated diffusion?

Accepted Answer

Movement of molecules across a membrane via transport proteins, down their concentration gradient.

Question 17

Which of the following is a product of the Calvin cycle in photosynthesis?

Accepted Answer

Glucose

Question 18

Which of the following best explains the conservation of the genetic code across all life forms?

Accepted Answer

It is evidence of a universal common ancestry.

Question 19

Which of the following is a correct statement about the relationship between monomers and polymers?

Accepted Answer

Polymers are formed by joining monomers through dehydration synthesis.

General Biology: Life, Biochemistry, Cells, Energy, and Photosynthesis

Study Guide - Practice Questions

Study Guide - Flashcards