MSA1 First Semester Biology Final 80 q's

Front

How can you find the number of neutrons in an atom?

Back

Number of neutrons = Atomic mass - Atomic number.

Front

What is the difference between a community and a population?

Back

A community is made up of populations of different species, while a population is made up of individuals of a single species.

Front

If an element has an atomic number of 3 and the number of neutrons is 4, what is the number of electrons?

Back

The number of electrons is 3.

Front

What property of water requires a lot of energy to break the hydrogen bonds?

Back

Specific heat.

Front

What type of bond is formed between sodium and chlorine in NaCl?

Back

Ionic bond.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the significance of the atomic mass of an element?

Back

Atomic mass is the weighted average mass of an element's isotopes.

Front

Define a molecule.

Back

A molecule is a group of two or more atoms bonded together.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond involves the transfer of electrons, while a covalent bond involves the sharing of electrons.

Front

What is the role of water in biological systems?

Back

Water acts as a solvent, temperature buffer, and is essential for biochemical reactions.