Question 1

Which of the following best describes the relationship between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a nucleus and membrane-bound organelles, while prokaryotic cells lack both.

Question 2

A scientist is studying a solution with a hydrogen ion concentration of $$1 	imes 10$$^{-5}$$ M. What is the pH of this solution?

Accepted Answer

$$pH = 5$$

Question 3

Which of the following scenarios best illustrates the process of natural selection?

Accepted Answer

A population of bacteria exposed to antibiotics develops resistance over several generations.

Question 4

Which of the following is a correct application of the Hardy-Weinberg equation $$p^2 + 2pq$$ + $$q^2 = 1$?

Accepted Answer

To calculate the frequency of heterozygotes in a population at equilibrium.

Question 5

Which of the following best explains why water is an excellent solvent for many biological molecules?

Accepted Answer

Water is a polar molecule, allowing it to form hydrogen bonds with many solutes.

Question 6

A patient is diagnosed with sickle cell anemia, a disease caused by a single amino acid substitution in hemoglobin. This is an example of which type of mutation?

Accepted Answer

Missense mutation

Question 7

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

Accepted Answer

Enzymes act as catalysts by lowering the activation energy of reactions.

Question 8

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

Accepted Answer

Oxygen ($$O_2)$$

Question 9

Which of the following is a correct sequence of the levels of biological organization from smallest to largest?

Accepted Answer

Cell $$\rightarrow$$ Tissue $$\rightarrow$$ Organ $$\rightarrow$$ Organism $$\rightarrow$$ Population

Question 10

A population of rabbits in a forest is estimated to have 200 individuals in a 2 km$$^2$$ area. What is the population density?

Accepted Answer

$$100$$ rabbits/km$$^2$$

Question 11

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

Accepted Answer

Active transport moves substances against their concentration gradient using energy, while passive transport moves substances down their gradient without energy.

Question 12

Which of the following is an example of a density-dependent factor regulating population growth?

Accepted Answer

A contagious disease spreading more rapidly as population density increases

Question 13

Which of the following best explains why recessive sex-linked disorders are more common in males than females?

Accepted Answer

Males have only one X chromosome, so a single recessive allele will result in the disorder.

Question 14

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

Accepted Answer

DNA is a double helix composed of deoxyribose sugars, phosphate groups, and nitrogenous bases.

Question 15

A scientist wants to test the effect of a new fertilizer on plant growth. Which of the following is the best example of a controlled experiment?

Accepted Answer

Growing one group of plants with the fertilizer and another group without, keeping all other conditions the same.

Question 16

Which of the following best describes the role of NAD$$^+ in $$cellular respiration?

Accepted Answer

NAD$$^+$$ acts as an electron carrier, accepting electrons during redox reactions.

Question 17

Which of the following is an example of a real-world application of recombinant DNA technology?

Accepted Answer

Producing human insulin using genetically modified bacteria

Question 18

Which of the following best describes the difference between inductive and deductive reasoning in the scientific method?

Accepted Answer

Inductive reasoning starts with specific observations to form general conclusions, while deductive reasoning starts with general principles to make specific predictions.

Question 19

Which of the following best explains the function of the Calvin cycle in photosynthesis?

Accepted Answer

The Calvin cycle uses ATP and NADPH to convert $$CO_2$$ into glucose.

General Biology I (BIO 101) Syllabus and Course Overview

Guida di studio - Domande di pratica

Study guide - Flashcard