Question 1

Which of the following best describes the scientific method as used in biological inquiry?

Accepted Answer

A cyclical process involving observation, hypothesis formation, experimentation, data analysis, and revision of hypotheses.

Question 2

Which of the following is NOT a characteristic of all living organisms?

Accepted Answer

Possession of a nucleus

Question 3

A scientist is studying a newly discovered microorganism. It lacks a nucleus, has a cell wall, and reproduces by binary fission. Which group does this organism most likely belong to?

Accepted Answer

Prokaryotes

Question 4

Which of the following best explains why water is essential for life?

Accepted Answer

Water acts as a universal solvent due to its polarity, facilitating chemical reactions in cells.

Question 5

Which of the following statements about cell membranes is correct?

Accepted Answer

Cell membranes are composed of a phospholipid bilayer with embedded proteins, allowing selective permeability.

Question 6

A patient is diagnosed with a genetic disorder caused by a mutation in a single gene. Which principle of inheritance is most relevant to understanding how this disorder is passed from parent to child?

Accepted Answer

Mendelian inheritance

Question 7

Which of the following best describes the role of enzymes in metabolism?

Accepted Answer

Enzymes act as catalysts, lowering the activation energy and speeding up chemical reactions.

Question 8

During osmosis, which direction does water move across a selectively permeable membrane?

Accepted Answer

From an area of low solute concentration to an area of high solute concentration

Question 9

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

Accepted Answer

$$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2 ightarrow 6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + 	ext{energy}$$

Question 10

A student observes that a plant placed in a sealed container with no light eventually dies. Which biological process is most directly affected by the absence of light?

Accepted Answer

Photosynthesis

Question 11

Which of the following best explains why viruses are not considered living organisms?

Accepted Answer

Viruses cannot reproduce independently without a host cell.

Question 12

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

Accepted Answer

DNA is a double helix composed of nucleotides with complementary base pairing.

Question 13

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.

Question 14

Which of the following best describes the unity and diversity of life?

Accepted Answer

All living organisms share a common set of characteristics but exhibit diversity due to evolutionary adaptation.

Question 15

Which of the following is an example of empirical and quantitative skills in biology?

Accepted Answer

Measuring the rate of enzyme activity using a spectrophotometer and analyzing the data.

Question 16

Which of the following best describes the process of diffusion?

Accepted Answer

Movement of molecules from an area of high concentration to low concentration, without energy input.

Question 17

Which of the following is a correct pairing of a biological molecule and its function?

Accepted Answer

Lipids – form the main structure of cell membranes

Question 18

A student is asked to solve a classical genetics problem involving a monohybrid cross between two heterozygous pea plants ($$Tt 	imes Tt). $$What is the expected phenotypic ratio of tall to short plants?

Accepted Answer

3:1

Question 19

Which of the following is a real-world example of natural selection?

Accepted Answer

A population of bacteria develops resistance to an antibiotic over several generations.

Question 20

Which of the following best describes the relationship between structure and function in biological molecules?

Accepted Answer

The three-dimensional structure of a molecule determines its specific function in the cell.

BIOL 1406 Syllabus and Course Structure: Biology for Science Majors I

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