Biology Ch. 2 - Chemistry of Life

The nucleus is made of ___.

• protons and electrons

• electrons and neutrons

• protons and neutrons

• protons, neutrons, and electrons

Tags

NGSS.HS-PS1-8

Isotopes are atoms of the same element with the same number of protons and ___.

• a different number of electrons

• a different number of molecules

• a different number of neutrons

• the same number of neutrons

Tags

NGSS.HS-PS1-8

A covalent bond is formed as the result of ___.

• transferring electrons

• transferring protons

• sharing electrons

• sharing protons

Tags

NGSS.HS-PS1-2

A solution is a/an ___.

• breaking of a chemical bond

• chemical reaction

• evenly distributed mixture of two or more substances

• combination of two or more liquids

Suspensions are mixtures ___.

• of water and nondissolved material

• in which the components are evenly distributed throughout the solution

• both a and b

• neither a nor b

Which of the following organic compounds is the main source of energy for living things?

• carbohydrates

• lipids

• proteins

• nucleic acids

Tags

NGSS.HS-LS1-6

Which organic macromolecule is composed of nucleotides?

• carbohydrates

• nucleic acids

• proteins

• lipids

___ are the building blocks of proteins.

• Nucleotides

• Monosaccharides

• Amino acids

• Fatty acids

Tags

NGSS.HS-LS1-6

Enzymes that stop working are ___.

• denatured

• monomers

• organic

• defined

Which of the following is NOT a function of proteins?

• store and transmit heredity

• help to fight disease

• control the rate of reactions and regulate cell processes

• used to form bones and muscles