Q: Which equation correctly represents aerobic 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 primary function of enzymes in biological systems?

Accepted Answer

Enzymes lower the activation energy required for chemical reactions.

Question 2

A scientist is measuring the rate of photosynthesis in a plant by tracking oxygen production. Which equation best represents the overall process of photosynthesis?

Accepted Answer

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

Question 3

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

Accepted Answer

Nucleic acids

Question 4

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

Accepted Answer

Oxygen ($$O_2)$$

Question 5

A student observes a cell under a microscope and notes the presence of a nucleus, mitochondria, and chloroplasts. Which type of cell is most likely being observed?

Accepted Answer

Plant cell

Question 6

Which of the following best explains why introduced species can disrupt ecosystem functions?

Accepted Answer

They compete with native species for resources, potentially leading to native species decline.

Question 7

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

Accepted Answer

Electron transport chain and chemiosmosis

Question 8

A population of beetles has two color morphs: green and brown. If brown beetles are better camouflaged and survive at higher rates, which evolutionary process is most likely occurring?

Accepted Answer

Natural selection

Question 9

Which of the following is a correct statement about the scientific method?

Accepted Answer

It involves forming hypotheses, conducting experiments, and analyzing data.

Question 10

Which equation correctly represents aerobic cellular respiration?

Accepted Answer

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

Question 11

A student is asked to analyze a DNA sample using gel electrophoresis. What is the primary purpose of this technique?

Accepted Answer

To separate DNA fragments based on size

Question 12

Which of the following best describes the role of chlorophyll in photosynthesis?

Accepted Answer

Chlorophyll absorbs light energy to drive the synthesis of glucose.

Question 13

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

Accepted Answer

Genetically engineering bacteria to produce insulin

Question 14

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

Accepted Answer

Storing genetic information

Question 15

A population of rabbits in a field increases from 100 to 400 in one year. What is the population growth rate ($$r) if $$the initial population ($$N_0) is 100 $$and the final population ($$N) is 400 $$after one year?

Accepted Answer

$$r = \frac{N - N_0$}{N_0$} = \frac{400 - 100}{100} = 3$$

Question 16

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

Accepted Answer

Eukaryotic cells contain membrane-bound organelles; prokaryotic cells do not.

Question 17

Which of the following is an example of a real-life application of the scientific method?

Accepted Answer

A doctor tests a new drug on patients and analyzes the results.

Question 18

Which of the following is a correct statement about patterns of inheritance?

Accepted Answer

Some traits are linked and inherited together due to their location on the same chromosome.

Question 19

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They break down dead organic matter, recycling nutrients.

Question 20

A scientist is studying the effect of light intensity on the rate of photosynthesis in Elodea plants. Which variable should be kept constant to ensure a valid experiment?

Accepted Answer

Type of plant used

General Biology I Lab: Course Structure, Assessment, and Weekly Topics

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