BIO 210 Ch. 2 Quiz

What elements make up the majority of human body mass?

• Carbon, Hydrogen, Nitrogen, Oxygen

• Iron, Calcium, Sodium, Potassium

• Zinc, Copper, Magnesium, Phosphorus

• Helium, Neon, Argon, Krypton

Tags

NGSS.HS-LS1-6

An element is a substance that:

• can be broken down into simpler substances by chemical means

• cannot be broken down into simpler substances by chemical means

• is composed of two or more different atoms

• exists only in gaseous form

Calculate the number of neutrons, protons, and electrons in a carbon atom.

• 6 protons, 6 neutrons, 6 electrons

• 6 protons, 7 neutrons, 6 electrons

• 7 protons, 6 neutrons, 7 electrons

• 6 protons, 6 neutrons, 7 electrons

Which of the following is not a type of chemical bond?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Magnetic bond

Briefly describe a dehydration synthesis (anabolic) reaction.

• It is a reaction where water is added to break bonds.

• It is a reaction where water is removed to form bonds.

• It is a reaction that involves the exchange of ions.

• It is a reaction that involves the transfer of electrons.

Briefly describe a hydrolysis (catabolic) reaction.

• A reaction where water is added to break down molecules

• A reaction where water is removed to build molecules

• A reaction that involves the transfer of electrons

• A reaction that involves the formation of a precipitate

What is hydrogen bonding?

• A type of covalent bond where electrons are shared

• A type of ionic bond where atoms exchange electrons.

• A weak interaction between a hydrogen atom of one molecule and an electronegative atom of another molecule

• A strong metallic bond

Compare and contrast DNA and RNA.

• DNA is double-stranded, while RNA is single-stranded.

• DNA contains uracil, while RNA contains thymine.

• DNA is found in the cytoplasm, while RNA is found in the nucleus.

• DNA is a type of protein, while RNA is a type of lipid.

Which of the following is a function of proteins?

• Energy storage

• Catalyzing biochemical reactions

• Insulation

• Genetic information storage

Tags

NGSS.HS-LS1-7

What does pH measure?

• The temperature of a solution

• The acidity or alkalinity of a solution

• The density of a solution

• The color of a solution