Unit 1 Review - Biology A

A theory __________.

Isotopes are atoms of the same element with the same number of protons but a different number of __________.

The basic unit of length in the metric system is the ________.

A substance that speeds up a chemical reaction.

How many meters are in 3.7 km?

What type of ion is formed when an atom loses electrons?

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

What is the process that changes one set of chemicals into another?

The work of scientists usually begins with

How many meters are there in 3.7 km?

The three particles that make up an atom are:

A covalent bond is formed as the result of ___________.

During a controlled experiment, a scientist isolates and tests:

A polysaccharide is a ___________.

Identify the reactant(s) in the chemical reaction: CO2 + H2O --> H2CO3

Information gathered from observing a plant grow 3 cm over a two-week period is called ________.

Which of the following is NOT a characteristic of all living things?

The process by which organisms keep everything inside their bodies within certain limits is called ____.

What type of ion forms when an atom loses electrons?

A covalent bond is formed as a result of:

Enzymes affect the reactions in living cells by lowering the ___________.

Based on your observations you suggest that the presence of water could accelerate the growth of mold. This is ________

Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts?

Which of the following best explains why some North American birds fly south for the winter?