Q: Which of the following is the correct general equation for a dehydration synthesis (condensation) reaction?

$$ \text{Monomer}_1 + \text{Monomer}_2 \rightarrow \text{Polymer} + H_2O $$

Question 1

Which of the following best describes the role of a control group in a biological experiment?

Accepted Answer

It is the group that receives no treatment or a standard treatment, allowing comparison to determine if the independent variable caused an effect.

Question 2

A scientist is testing the effect of light color on plant growth. She uses three groups: one exposed to red light, one to blue light, and one to white light. What is the independent variable in this experiment?

Accepted Answer

The color of light each group receives

Question 3

Which of the following is the correct general equation for a dehydration synthesis (condensation) reaction?

Accepted Answer

$$ 	ext{Monomer}_1 + 	ext{Monomer}_2 ightarrow 	ext{Polymer} + H_2O $$

Question 4

Which property of water allows it to move upward through the stem of a plant against gravity?

Accepted Answer

Adhesion

Question 5

A researcher collects the following data set: 2, 4, 6, 8, 10. What is the median value?

Accepted Answer

$$ 6 $$

Question 6

Which functional group is responsible for making amino acids basic?

Accepted Answer

Amino group ($$ -NH_2 )$$

Question 7

Which of the following statements about statistical significance in experiments is correct?

Accepted Answer

Statistical significance indicates that observed effects are unlikely due to chance.

Question 8

Which of the following best explains why water is considered a universal solvent?

Accepted Answer

Water can dissolve many substances because of its polarity and ability to form hydrogen bonds.

Question 9

Which type of isomerism is illustrated by L-glucose and D-glucose?

Accepted Answer

Enantiomerism

Question 10

A student is graphing the results of an experiment measuring plant height over time. Which graph type is most appropriate for showing trends in this data?

Accepted Answer

Line graph

Question 11

Which of the following best describes the difference between covalent and ionic bonds?

Accepted Answer

Covalent bonds involve sharing electrons, while ionic bonds involve the transfer of electrons.

Question 12

Which macromolecule is correctly matched with its monomer and primary function?

Accepted Answer

Carbohydrate – Monosaccharide – Energy storage

Question 13

Which property of water is most directly responsible for the moderation of Earth's climate and the stabilization of body temperature in organisms?

Accepted Answer

High specific heat

Question 14

A scientist hypothesizes that increasing temperature will decrease the rate of an enzyme-catalyzed reaction after a certain point. Which is the best way to write this hypothesis?

Accepted Answer

If the temperature is increased, then the rate of the reaction will decrease because the protein has been denatured.

Question 15

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

Accepted Answer

Ice is less dense than liquid water because water expands upon freezing.

Question 16

Which of the following is a correct example of a null hypothesis ($$ H_0 ) in a $$biological experiment?

Accepted Answer

There is no effect of light color on plant growth.

Question 17

Which of the following best describes the process of hydrolysis in biological macromolecules?

Accepted Answer

Polymers are broken down into monomers by the addition of water.

Question 18

Which of the following functional groups is found in both amino acids and fatty acids, and is responsible for acidic properties?

Accepted Answer

Carboxyl group ($$ -COOH )$$

Question 19

Which of the following best explains why carbon is able to form such a diversity of organic molecules?

Accepted Answer

Carbon can form four covalent bonds, allowing for a variety of structures including chains, rings, and branches.

Experimental Design, Biochemistry, and Macromolecules in General Biology

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