1 - Cells and Tissues -pages 22 to 28

Question 1

Name the 2 types of cells

Answer 1

Prokaryotic
Eukaryotic

Question 2

Name 2 features of Prokaryotic cells?

Answer 2

No Nucleus
No membrane binding internal structures
Divides by Binary Fission (RAPID MITOSIS)

BACTERIA

Question 3

Name 2 features of Eukaryotic cells?

Answer 3

Membrane Bound Nucleus
Membrane Bound Organelles
Divides by Mitosis
No Hard cell wall - only a membrane (exceptions are plants and fungi)

HUMAN and ANIMAL CELLS

Question 4

What is RNA short for

Answer 4

Ribonucleic Acid

Question 5

What is DNA short for?

Answer 5

Deoxyribonucleic Acid

Question 6

What function does the cell membrane do?

Answer 6

Allows mobility and cell processes such as growth, movement and secretion.

Question 7

What are embedded in the cell membrane what helps the transport of substances in and out of cell?

Answer 7

Transmembrane proteins

Question 8

Name 3 functions of Transmembrane proteins?

Answer 8

Transport of substances in/out of cell.
Immunological identity
Receptors (for hormones)

Question 9

What else is embedded in the cell membrane?

Answer 9

Other fats such as CHOLESTEROL

Question 10

Cell membrane is made of two layers called?

Answer 10

The Phospholipid Bilayer

Question 11

Name the 2 layers of the Phospholipid Bilayer?

Answer 11

Hydrophobic Lipid Tails
Hydrophilic Phosphate Heads

Question 12

Which way do the Hydrophobic Tails face?

Answer 12

Inwards

Question 13

Which way do the Hydrophilic Heads face?

Answer 13

Outwards

Question 14

What is a cell junction?

Answer 14

A contact/communication point between adjacent cell membranes.

Question 15

Where in the body can tight cell junctions be found?

Answer 15

Stomach
Intestines
Bladder