Biology Test #2

One of several forms of an element, each containing the same number of protons but a different number of neutrons.

An attractive force that holds molecules of the same substance together.

An attractive force that holds molecules of different substances together.

A lipid made from fatty acids that have no double bonds between carbon atoms.

A lipid made from fatty acids that have at least one double bonds between carbon atoms.

The energy needed to get reactions started.

Two different molecules that have the same chemical formula

Which of the following particles are found in the nucleus of an atom?

• electrons and protons

• protons and neutrons

• electrons and neutrons

• only protons

A student reports on an atom that has 11 protons, 10 neutrons, and 10 electrons. What is wrong with the student's report?

Tags

NGSS.MS-PS1-1

Two atoms have the same number of neutrons but different numbers of protons. Do they they belong to the same element?

• yes

• no