Terms I

Question 1

Immunity

Answer 1

The means by which the body protects itself from infection

Question 2

Intercropping

Answer 2

The practice of growing two or more crops in close proximity usually to produce a greater yield on a piece of land

Question 3

Interspecific variation

Answer 3

Differences between organisms of different species

Question 4

Intraspecific variation

Answer 4

Differences between organisms of the same species

Question 5

Ion

Answer 5

An atom or group of atoms that had lost or gained one or more ELECTRONS. Ions therefore have either a positive or negative charge

Question 6

Ion channel

Answer 6

A passage across a cell-surface membrane made up of a protein that spans the membrane and opens and closes to allow IONS to pass in and out if the cell

Question 7

Isotope

Answer 7

Variations of a chemical elements that have the same number of protons and ELECTRONS but different numbers of neutrons. While their chemical properties are similar they differ in mass. One example is carbon which has a relative atomic mass of 12 and an isotope with relative atomic mass of 14