Question 1

Which of the following best describes a hypothesis in scientific research?

Accepted Answer

A tentative explanation that can be tested by experiments or observations

Question 2

Which of the following is an example of quantitative data?

Accepted Answer

The number of leaves on a plant

Question 3

What is the main difference between an atom and a molecule?

Accepted Answer

Molecules are made of atoms bonded together

Question 4

Which of the following best explains why water has a high specific heat?

Accepted Answer

Hydrogen bonds between water molecules absorb heat when they break and release heat when they form

Question 5

If a solution has a pH of 3, how does its hydrogen ion concentration compare to a solution with a pH of 6?

Accepted Answer

It is 1000 times higher

Question 6

Which of the following is a correct statement about covalent bonds?

Accepted Answer

Covalent bonds involve the sharing of electron pairs between atoms

Question 7

A student is asked to balance the following chemical equation: $$\mathrm{C_2H_6 + O_2$ \rightarrow CO_2$ + H_2O}. $$What is the correct set of coefficients to balance the equation?

Accepted Answer

$$2, 7, 4, 6$$

Question 8

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

Accepted Answer

Cohesion and adhesion

Question 9

Which of the following best describes an isomer?

Accepted Answer

Molecules with the same molecular formula but different structures

Question 10

A solution is made by dissolving 10 grams of NaCl in enough water to make 1 liter of solution. What is the molarity of the solution? (Molar mass of NaCl = 58.44 g/mol)

Accepted Answer

$$0.17\ \mathrm{M}$$

Question 11

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

Accepted Answer

Carboxyl group

Question 12

Which of the following statements about van der Waals interactions is correct?

Accepted Answer

They occur due to temporary fluctuations in electron distribution

Question 13

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

Accepted Answer

Hydrogen bonds in ice create a lattice that is less dense than liquid water

Question 14

Which of the following is a correct comparison between inductive and deductive reasoning?

Accepted Answer

Deductive reasoning starts with a general principle and predicts specific outcomes

Question 15

Which of the following best describes a polar covalent bond?

Accepted Answer

A bond where electrons are shared unequally, resulting in partial charges

Question 16

A buffer solution is important in biological systems because it:

Accepted Answer

Minimizes changes in pH when acids or bases are added

Question 17

Which of the following best explains the diversity of organic molecules formed by carbon?

Accepted Answer

Carbon can form up to four covalent bonds, allowing for a variety of structures

Question 18

Which of the following is the correct formula for calculating molarity ($$M) of a $$solution?

Accepted Answer

$$M = \frac{	ext{moles of solute}}{	ext{volume of solution in liters}}$$

Question 19

Which of the following best describes the role of hydrogen bonds in the properties of water?

Accepted Answer

They are responsible for water's cohesion, adhesion, and high specific heat

Question 20

Which of the following functional groups is found in ATP and is important for energy transfer in cells?

Accepted Answer

Phosphate group

General Biology Study Guide: Chapters 1–4 (Scientific Inquiry, Chemistry of Life, Water, and Carbon)

Study Guide - Practice Questions

Study Guide - Flashcards