Question 1

Which of the following correctly describes the relationship between pH and hydrogen ion concentration $$[H^+] in a $$solution?

Accepted Answer

As pH decreases, $$[H^+]$$ increases.

Question 2

A solution has a pH of 1. How many times greater is its hydrogen ion concentration compared to a solution with pH 3?

Accepted Answer

$$100$$ times greater

Question 3

You are given a polypeptide that is 29 amino acids long. How many peptide bonds does it contain?

Accepted Answer

$$28$$ peptide bonds

Question 4

When building a triglyceride from its components, how many molecules of water are released?

Accepted Answer

$$3$$ molecules of water

Question 5

Which functional group is present in all amino acids and is responsible for their acidic properties?

Accepted Answer

Carboxyl group $$(-COOH)$$

Question 6

A student adds drops of HCl to two solutions and measures the pH shift. Solution A's pH drops from 7 to 4, while Solution B's pH drops from 7 to 6. Which solution has the better buffer capacity?

Accepted Answer

Solution B

Question 7

Which molecule is correctly identified as a disaccharide?

Accepted Answer

Maltose

Question 8

Which of the following is a saturated fatty acid?

Accepted Answer

A fatty acid with only single bonds between carbon atoms

Question 9

Which part of the microscope is responsible for adjusting the amount of light that reaches the specimen?

Accepted Answer

Diaphragm

Question 10

If you have 0.5 milliliters $$(0.5\ \mathrm{mL}) of a $$solution, how many microliters $$(\mu\mathrm{L}) is $$this?

Accepted Answer

$$500\ \mu\mathrm{L}$$

Question 11

Which molecule contains a peptide bond?

Accepted Answer

Dipeptide

Question 12

Which of the following is the correct chemical formula for carbon dioxide?

Accepted Answer

$$CO_2$$

Question 13

Which molecule is the main energy currency of the cell?

Accepted Answer

ATP (adenosine triphosphate)

Question 14

A student observes a specimen under the microscope and identifies it as a tick. Which of the following features would help confirm this identification?

Accepted Answer

Presence of a hard exoskeleton and eight legs

Question 15

Which of the following molecules is a steroid?

Accepted Answer

Cholesterol

Question 16

Which functional group is found in both amino acids and proteins and is basic in nature?

Accepted Answer

Amino group $$(-NH_2$)$$

Question 17

Which molecule is correctly identified as a monounsaturated fatty acid?

Accepted Answer

A fatty acid with one double bond in its hydrocarbon chain

Question 18

Which of the following is the correct chemical formula for oxygen gas?

Accepted Answer

$$O_2$$

Question 19

Which of the following is NOT a function of a lab notebook?

Accepted Answer

Storing chemical reagents

Question 20

A student is asked to convert 2.5 nanoliters $$(2.5\ \mathrm{nL}) to $$microliters $$(\mu\mathrm{L}). $$What is the correct conversion?

Accepted Answer

$$0.0025\ \mu\mathrm{L}$$

General Biology Lab and Molecular Foundations Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드