Structural organization

Question 1

Smallest living unit

Answer 1

cell

Question 2

The fundamental unit of all living things (animal or plant)

Answer 2

cell

Question 3

cell membrane

Answer 3

surrounds and protects the cell
-regulates what passes in and out of the cell

Question 4

Nucleus

Answer 4

controls the operation of the cell. It directs division and determines the structure and function of the cell

Question 5

Chromosomes

Answer 5

rod-like structures within the nucleus

Question 6

All human body cells except _______contain 23 pairs of chromosomes

Answer 6

sex cells (sperm and egg)

Question 7

How many chromosomes does the sperm and egg have

Answer 7

46

Question 8

chromosomes contain regions called

Answer 8

genes

Question 9

Each gene conatins a chemical called

Answer 9

DNA

Question 10

DNA regulates

Answer 10

the activities of the cell according to its sequence

Question 11

A karyotype is a photograph

Answer 11

of an individual’s chromosomes, arranged size, shape, and number.

Question 12

What happens when a baby is born without a chromosomal abnormality

Answer 12

serious problems can result