Q: Which formula correctly represents the formation of a polymer from monomers?

$$\text{monomer} + \text{monomer} \rightarrow \text{polymer}$$

Question 1

Which property of water allows it to moderate temperature changes in organisms and environments?

Accepted Answer

High specific heat

Question 2

A scientist wants to test the effect of a new fertilizer on plant growth. She gives the fertilizer to one group of plants and leaves another group untreated. What is the control group in this experiment?

Accepted Answer

The group that receives no fertilizer

Question 3

Which macromolecule is primarily responsible for storing and transmitting genetic information?

Accepted Answer

Nucleic acids

Question 4

A student designs an experiment to test whether soap is polar, nonpolar, or both. She observes that soap can dissolve both oil and water. What does this suggest about the molecular structure of soap?

Accepted Answer

Soap has both polar and nonpolar regions

Question 5

Which of the following best describes a hypothesis in scientific experimental design?

Accepted Answer

A testable and falsifiable explanation for an observation

Question 6

Which type of graph is most appropriate for displaying the change in plant height over time?

Accepted Answer

Line graph

Question 7

What is the monomer unit of proteins?

Accepted Answer

Amino acid

Question 8

Which property of water allows insects to walk on its surface?

Accepted Answer

Cohesion and surface tension

Question 9

In an experiment, the variable that is deliberately changed by the experimenter is called the:

Accepted Answer

Independent variable

Question 10

Which of the following is a function of carbohydrates in living organisms?

Accepted Answer

Providing energy and structural support

Question 11

A negative control group in an experiment is used to:

Accepted Answer

Identify outside influences and contaminants

Question 12

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

Accepted Answer

Water is polar and can dissolve many ionic and polar substances

Question 13

Which macromolecule is most likely to be found in cell membranes and is responsible for long-term energy storage?

Accepted Answer

Lipids

Question 14

A student is analyzing a graph showing the effect of acidity (pH) on oyster shell mass over 10 days. Which variable is the independent variable?

Accepted Answer

Acidity (pH)

Question 15

Which of the following is NOT a characteristic of a well-designed experiment?

Accepted Answer

Multiple variables are changed at once

Question 16

Which of the following best describes stereotype threat in science?

Accepted Answer

A psychological phenomenon where individuals underperform due to negative stereotypes about their group

Question 17

Which formula correctly represents the formation of a polymer from monomers?

Accepted Answer

$$	ext{monomer} + 	ext{monomer} ightarrow 	ext{polymer}$$

Question 18

Which of the following is a constant in an experiment testing the effect of fertilizer on plant height?

Accepted Answer

Type of plant

Question 19

Which property of water is most important for its role in transporting nutrients and waste in living organisms?

Accepted Answer

Universal solvent

Question 20

Which of the following statements about objectivity in science is correct?

Accepted Answer

Objectivity requires awareness and minimization of personal and societal biases

Unit One: Chemistry of Life and Objectivity in Science – Study Notes

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