Question 1

Which of the following best describes the primary theme of scientific inquiry in biology, as outlined in the course objectives?

Accepted Answer

The evaluation and synthesis of scientific evidence to understand life processes.

Question 2

A student is investigating the effect of pH on enzyme activity. According to the course content, which property of water is most relevant to this experiment?

Accepted Answer

Water's role as a universal solvent and its capacity to form hydrogen bonds.

Question 3

Which chemical reaction is most directly responsible for the formation of polymers from monomers in biological systems?

Accepted Answer

Dehydration synthesis reaction

Question 4

A patient is diagnosed with acidosis. Based on your understanding of acids, bases, and pH, which equation best represents the relationship between hydrogen ion concentration and pH?

Accepted Answer

$$pH = -\log_{10}[H^+]$$

Question 5

Which of the following macromolecules is primarily responsible for storing genetic information in cells?

Accepted Answer

Nucleic acids

Question 6

During a laboratory experiment, a student adds a strong acid to a solution and observes a decrease in pH. Which buffer system in human blood helps resist drastic changes in pH?

Accepted Answer

Bicarbonate buffer system

Question 7

Which of the following best explains why ice floats on water?

Accepted Answer

Ice is less dense than liquid water because its hydrogen bonds form a crystalline lattice.

Question 8

A scientist is studying the movement of molecules across a cell membrane. Which equation best describes the rate of diffusion ($$J) $$across a membrane?

Accepted Answer

$$J = -D \frac{dC}{dx}$$

Question 9

Which of the following is a correct statement about the structure of nucleic acids?

Accepted Answer

Nucleic acids are polymers of nucleotides joined by phosphodiester bonds.

Question 10

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 due to osmosis.

Question 11

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

Accepted Answer

Enzymes act as catalysts to lower the activation energy and speed up reactions.

Question 12

A researcher is analyzing the structure of a phospholipid bilayer. Which property of phospholipids is most critical for the formation of biological membranes?

Accepted Answer

Phospholipids have both hydrophilic and hydrophobic regions.

Question 13

Which of the following equations correctly represents the relationship between the concentration of solute and osmotic pressure ($$\Pi) in a $$solution?

Accepted Answer

$$\Pi = iMRT$$

Question 14

A mutation occurs in the DNA sequence of a gene. Which process is most directly affected by this mutation?

Accepted Answer

Protein synthesis during translation

Question 15

Which of the following is a real-world example of a dehydration synthesis reaction?

Accepted Answer

The formation of a peptide bond between two amino acids

Question 16

A scientist wants to measure the pH of a solution. If the hydrogen ion concentration is $$1 	imes 10$$^{-4}$$ M, what is the pH of the solution?

Accepted Answer

$$pH = 4$$

Question 17

Which of the following statements about carbohydrates is correct?

Accepted Answer

Carbohydrates serve as a primary energy source for most organisms.

Question 18

A medical case involves a patient with sickle cell anemia. Which type of biological molecule is directly affected in this disease?

Accepted Answer

Protein

Question 19

Which of the following best describes the role of ATP in cellular processes?

Accepted Answer

ATP provides energy for cellular work by releasing a phosphate group.

General Biology I (BIOL 189) Syllabus and Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard