Q: Which of the following equations correctly represents the process of photosynthesis?

$$6 \text{CO}_2 + 6 \text{H}_2\text{O} \rightarrow C_6H_{12}O_6$ + 6 \text{O}_2$$

Q: Which of the following equations represents the net reaction for aerobic cellular respiration?

$$C_6H_{12}O_6$ + 6 \text{O}_2 \rightarrow 6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{ATP}$$

Question 1

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

Accepted Answer

They generate ATP through cellular respiration.

Question 2

A scientist is studying a new macromolecule found in a marine organism. The molecule is composed of long chains of amino acids. Which class of macromolecules does this molecule belong to?

Accepted Answer

Proteins

Question 3

Which of the following equations correctly represents the process of photosynthesis?

Accepted Answer

$$6 	ext{CO}_2 + 6 	ext{H}_2	ext{O} ightarrow C_6H_{12}O_6$ + 6 	ext{O}_2$$

Question 4

A patient is diagnosed with a genetic disorder caused by a mutation in a gene encoding an enzyme. Which of the following best explains how this mutation can lead to disease?

Accepted Answer

The mutation prevents the enzyme from binding its substrate, disrupting a metabolic pathway.

Question 5

Which of the following statements about the structure of DNA is correct?

Accepted Answer

DNA is a double helix with complementary base pairing between adenine and thymine.

Question 6

A cell is placed in a solution with a higher concentration of solutes than the cell's cytoplasm. What will most likely happen to the cell?

Accepted Answer

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

Question 7

Which of the following best explains why enzymes are necessary for many cellular reactions?

Accepted Answer

Enzymes decrease the activation energy, allowing reactions to occur at cellular temperatures.

Question 8

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 9

A plant cell is observed under a microscope and found to contain a large central vacuole, chloroplasts, and a rigid cell wall. Which of the following is a function of the central vacuole?

Accepted Answer

It stores water and maintains turgor pressure.

Question 10

Which of the following scenarios best illustrates Mendel's law of independent assortment?

Accepted Answer

A dihybrid cross between plants with round yellow seeds and wrinkled green seeds produces offspring with all possible combinations of seed shape and color.

Question 11

Which of the following best describes the role of the Golgi apparatus in a eukaryotic cell?

Accepted Answer

It modifies, sorts, and packages proteins for secretion or delivery to other organelles.

Question 12

A patient with a mitochondrial disorder is unable to efficiently produce ATP. Which cellular process is most directly affected?

Accepted Answer

Oxidative phosphorylation

Question 13

Which of the following equations represents the net reaction for aerobic cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6 	ext{O}_2 ightarrow 6 	ext{CO}_2 + 6 	ext{H}_2	ext{O} + 	ext{ATP}$$

Question 14

A geneticist is studying a trait controlled by a single gene with two alleles, one dominant and one recessive. If two heterozygous individuals are crossed, what is the expected genotypic ratio among their offspring?

Accepted Answer

1:2:1

Question 15

Which of the following best explains why water is considered a polar molecule?

Accepted Answer

It has a bent shape and unequal sharing of electrons between oxygen and hydrogen.

Question 16

A researcher discovers a mutation that causes a cell to be unable to synthesize phospholipids. Which cellular structure would be most directly affected?

Accepted Answer

The cell membrane

Question 17

Which of the following is a real-world example of the application of the scientific method?

Accepted Answer

A doctor observes that patients with a certain diet have lower blood pressure, forms a hypothesis, and conducts a controlled experiment to test the effect of the diet.

Question 18

Which of the following best describes the relationship between genotype and phenotype?

Accepted Answer

Genotype determines the phenotype through the expression of genes.

Question 19

A cell is observed to have a high concentration of rough endoplasmic reticulum (RER). Which function is this cell most likely specialized for?

Accepted Answer

Protein synthesis for export

Question 20

Which of the following scenarios best demonstrates the concept of energy transformation in living organisms?

Accepted Answer

A plant converts sunlight into chemical energy during photosynthesis.

BIO 1150 Principles of Biology I: Syllabus and Course Structure Study Guide

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