Question 1

Which of the following best describes the difference between a hypothesis and a prediction in the scientific method?

Accepted Answer

A hypothesis is a testable explanation for an observation, while a prediction is a specific expected outcome if the hypothesis is true.

Question 2

A scientist is testing the effect of a new fertilizer on plant growth. She sets up two groups: one receives the fertilizer, and the other does not. What is the control group in this experiment?

Accepted Answer

The group that does not receive the fertilizer.

Question 3

Which functional group is responsible for forming hydrogen bonds and increasing the solubility of molecules in water?

Accepted Answer

Hydroxyl group ($$-OH)$$

Question 4

Which of the following is a correct statement about the difference between independent and dependent variables in an experiment?

Accepted Answer

The independent variable is manipulated by the researcher, while the dependent variable is measured as the outcome.

Question 5

Which functional group is most likely to act as an acid by donating a proton ($$H^+) in $$aqueous solution?

Accepted Answer

Carboxyl group ($$-COOH)$$

Question 6

A well-written hypothesis should include which of the following elements?

Accepted Answer

A testable explanation and a prediction that can be measured.

Question 7

Which functional group is nonpolar and often involved in hydrophobic interactions and gene regulation?

Accepted Answer

Methyl group ($$-CH_3$)

Question 8

If a scientist observes that a protein denatures at high temperature, which level of protein structure is most directly affected first?

Accepted Answer

Tertiary structure

Question 9

Which of the following statements about the phosphate group ($$-PO_4$^{2-}) is $$correct?

Accepted Answer

It is negatively charged and can form ionic bonds with positively charged groups.

Question 10

A student is analyzing a graph showing the effect of pH on enzyme activity. What is the best way to draw a conclusion from the data presented?

Accepted Answer

Identify the pH at which enzyme activity is highest and relate it to the enzyme's optimal conditions.

Question 11

Which functional group is most likely to participate in peptide bond formation between amino acids?

Accepted Answer

Amino group ($$-NH_2$)

Question 12

Which of the following is an example of deductive reasoning in biology?

Accepted Answer

Predicting that all mammals have hair because you know that humans and dogs (both mammals) have hair.

Question 13

Which functional group is most likely to increase the reactivity of a molecule, making it good in chemical reactions such as those in sugars?

Accepted Answer

Carbonyl group ($$C=O)$$

Question 14

A researcher wants to test the effect of salt concentration on the rate of osmosis in potato cells. Which variable should be kept constant to ensure a fair test?

Accepted Answer

Temperature of the environment

Question 15

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

Accepted Answer

It serves as a baseline for comparison to determine the effect of the independent variable.

Question 16

Which functional group is most likely to form disulfide bonds that stabilize protein structure?

Accepted Answer

Sulfhydryl group ($$-SH)$$

Question 17

A scientist finds that her experimental results do not support her hypothesis. What should she do next according to the scientific method?

Accepted Answer

Re-evaluate the hypothesis and design new experiments.

Question 18

Which functional group is most likely to act as a base by accepting a proton ($$H^+) in $$aqueous solution?

Accepted Answer

Amino group ($$-NH_2$)

Question 19

Which of the following is a correct application of the scientific method in a real-world medical scenario?

Accepted Answer

Formulating a hypothesis that a new drug reduces blood pressure, then testing it with a control and experimental group.

Question 20

Which functional group is most likely to be found in ATP and is essential for energy transfer in cells?

Accepted Answer

Phosphate group ($$-PO_4$^{2-})$$

General Biology: Scientific Process, Key Concepts, and Biologically Important Molecules

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드