Q: Which of the following is a correct application of the formula $$[H^+][OH^-] = 1 \times 10$$^{-14}$$ in determining the pH of a solution?

If $$[OH^-] = 1 \times 10$$^{-8}$$ M, then $$[H^+] = 1 \times $$10^{-6} M $$and $$pH = 6$$

Question 1

Which of the following best describes the experimental control in a scientific study investigating the effect of light on plant growth?

Accepted Answer

The group of plants exposed to no light at all

Question 2

Which element is most likely to form four covalent bonds due to its valence electron configuration?

Accepted Answer

Carbon

Question 3

A solution has a hydrogen ion concentration of $$[H^+] = 1 	imes 10$$^{-6}$$ M. What is the pH of this solution?

Accepted Answer

$$pH = 6$$

Question 4

Which functional group is found in both amino acids and proteins, and is essential for peptide bond formation?

Accepted Answer

Carboxyl group

Question 5

Which of the following statements about water is TRUE and helps explain its importance for life on Earth?

Accepted Answer

Water has a high specific heat, allowing it to moderate Earth's climate

Question 6

If a salt is formed from the reaction of hydrochloric acid ($$HCl) $$and sodium hydroxide ($$NaOH$$), what is the chemical formula of the salt produced?

Accepted Answer

$$NaCl$$

Question 7

Which of the following best explains why carbon is considered the backbone of biological molecules?

Accepted Answer

Carbon can form up to four covalent bonds, allowing for complex structures

Question 8

A molecule contains a double bond between two carbon atoms. Which type of bond is present?

Accepted Answer

Covalent bond

Question 9

Which of the following is a correct statement about the periodic table and atomic structure?

Accepted Answer

The atomic number represents the number of protons in an atom

Question 10

Which of the following functional groups is most likely to increase the solubility of a molecule in water?

Accepted Answer

Carboxyl group

Question 11

A solution has $$[OH^-] = 1 	imes 10$$^{-10}$$ M. What is the pH of the solution?

Accepted Answer

$$pH = 4$$

Question 12

Which of the following is NOT a property of water that is important for life?

Accepted Answer

Water molecules are nonpolar

Question 13

Which of the following best describes a hydrogen bond?

Accepted Answer

A bond formed between a hydrogen atom and an electronegative atom like oxygen or nitrogen

Question 14

Which of the following elements is NOT considered a foundation of biology?

Accepted Answer

Sodium

Question 15

Which of the following is an example of a covalent bond?

Accepted Answer

The bond between two hydrogen atoms in a hydrogen molecule

Question 16

Which of the following is a correct statement about pH and solutions?

Accepted Answer

A solution with $$[H^+] = [OH^-] is $$neutral

Question 17

Which functional group is commonly found in sugars and increases their solubility in water?

Accepted Answer

Hydroxyl group

Question 18

Which of the following is a correct example of a single covalent bond?

Accepted Answer

The bond between two hydrogen atoms in $$H_2$$

Question 19

Which of the following is a correct statement about the importance of water's polarity?

Accepted Answer

It enables water molecules to form hydrogen bonds with each other

Question 20

Which of the following is a correct application of the formula $$[H^+][OH^-] = 1 	imes 10$$^{-14}$$ in determining the pH of a solution?

Accepted Answer

If $$[OH^-] = 1 	imes 10$$^{-8}$$ M, then $$[H^+] = 1 	imes $$10^{-6} M $$and $$pH = 6$$

General Biology Exam Study Guide: Foundations of Life and Chemistry

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