Q: Which equation correctly represents cellular respiration?

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

Question 1

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

Accepted Answer

A process where hypotheses are formed, tested, and revised based on experimental evidence.

Question 2

Which macromolecule is primarily responsible for storing genetic information in cells?

Accepted Answer

DNA

Question 3

A student mixes glucose ($$C_6H_{12}O_6$) with water and observes it dissolves easily. Which property of water is most responsible for this?

Accepted Answer

Water's polarity

Question 4

Which equation correctly represents cellular respiration?

Accepted Answer

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

Question 5

During photosynthesis, which molecule acts as the primary electron donor in the light reactions?

Accepted Answer

Water ($$H_2O)$$

Question 6

Which of the following best explains why enzymes are important in biological systems?

Accepted Answer

They speed up chemical reactions by lowering activation energy.

Question 7

A mutation occurs in a gene coding for a membrane protein. Which cellular process is most likely to be affected?

Accepted Answer

Transport of molecules across the cell membrane

Question 8

Which of the following is a correct application of Mendel’s law of segregation?

Accepted Answer

Each gamete receives only one allele for each gene.

Question 9

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 10

Which equation represents the Hardy-Weinberg equilibrium for allele frequencies?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

Question 11

Which of the following is a function of the plasma membrane in cells?

Accepted Answer

Regulating the movement of substances into and out of the cell

Question 12

Which process is directly responsible for the production of ATP during cellular respiration?

Accepted Answer

Electron transport chain

Question 13

A population of frogs is isolated in a new environment. Over time, they develop unique traits not found in the original population. Which evolutionary mechanism is most likely responsible?

Accepted Answer

Genetic drift

Question 14

Which of the following best describes the role of mitochondria in eukaryotic cells?

Accepted Answer

Site of cellular respiration and ATP production

Question 15

Which term describes the movement of water across a selectively permeable membrane?

Accepted Answer

Osmosis

Question 16

Which of the following is a correct statement about ecological interactions?

Accepted Answer

Predation is an interaction where one organism benefits and the other is harmed.

Question 17

Which of the following is a real-world application of biotechnology?

Accepted Answer

Genetically modifying crops to resist pests

Question 18

Which process is responsible for the separation of sister chromatids during mitosis?

Accepted Answer

Anaphase

Question 19

Which of the following best explains why carbon is a key element in biological molecules?

Accepted Answer

Carbon can form four covalent bonds, allowing for complex molecules.

Question 20

Which of the following is a correct example of a hypothesis in the scientific method?

Accepted Answer

If fertilizer is added to soil, then plant growth will increase.

Essentials of Biology (Bio 100) – Syllabus and Course Structure

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