Q: Which equation correctly represents the relationship between photosynthesis and cellular respiration?

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

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

$\text{DNA} \rightarrow \text{RNA} \rightarrow \text{Protein}$

Question 1

Which property of water is most responsible for its ability to moderate temperature in living organisms?

Accepted Answer

Its ability to form hydrogen bonds

Question 2

A mutation causes a protein to lose its tertiary structure but retain its primary structure. Which level of protein organization is most directly affected?

Accepted Answer

Tertiary structure

Question 3

Which of the following best describes the role of enzymes in metabolic pathways?

Accepted Answer

Enzymes lower the activation energy, speeding up reactions

Question 4

A cell is observed to have a large number of ribosomes attached to its endoplasmic reticulum. What is the most likely function of this cell?

Accepted Answer

Protein secretion

Question 5

Which equation correctly represents the relationship between photosynthesis and cellular respiration?

Accepted Answer

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

Question 6

A patient is diagnosed with a genetic disorder caused by a single base substitution in a gene. Which process most likely led to this mutation?

Accepted Answer

Point mutation during DNA replication

Question 7

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

Accepted Answer

Phospholipids have both hydrophilic heads and hydrophobic tails

Question 8

During cellular respiration, which molecule is the final electron acceptor in the electron transport chain?

Accepted Answer

Oxygen ($\mathrm{O_2}$)

Question 9

Which of the following is a direct result of crossing over during meiosis?

Accepted Answer

Increased genetic variation in gametes

Question 10

A scientist discovers a new organism whose cells contain membrane-bound organelles and a nucleus. Which domain does this organism most likely belong to?

Accepted Answer

Eukarya

Question 11

Which of the following best describes the function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

Modifies, sorts, and packages proteins for secretion

Question 12

If a cell is placed in a hypertonic solution, what will most likely happen to the cell?

Accepted Answer

It will lose water and shrink

Question 13

Which process is responsible for the synthesis of RNA from a DNA template?

Accepted Answer

Transcription

Question 14

A genetic cross between two heterozygous individuals for a single trait ($Aa 	imes Aa$) will produce what expected genotypic ratio in the offspring?

Accepted Answer

$1:2:1$ (AA:Aa:aa)

Question 15

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

Accepted Answer

Interphase includes G1, S, and G2 phases

Question 16

A patient with sickle cell anemia has a mutation in the gene coding for hemoglobin. This mutation affects which level of protein structure?

Accepted Answer

Primary structure

Question 17

Which of the following is NOT a function of carbohydrates in living organisms?

Accepted Answer

Catalyzing chemical reactions

Question 18

Which of the following best explains the principle of independent assortment in Mendelian genetics?

Accepted Answer

Alleles for different genes segregate independently during gamete formation

Question 19

A researcher measures the rate of photosynthesis in a plant under different light intensities. Which variable is the independent variable in this experiment?

Accepted Answer

Light intensity

Question 20

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

Accepted Answer

$	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein}$

Introductory Biology I-BISC207: Syllabus and Study Guide

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