cells

Question 1

Cell membrane

Answer 1

A flexible phospholipid bilayer that controls the entry and exit of substances and encloses the cell;

Question 2

cytoplasm

cytosol

Answer 2

the cytoplasm is a fluid containing all cell contents, including organelles

a fluid element of the cytoplasm

Question 3

endoplasmic reticulum and ( smooth ER, Rough ER)

Answer 3

network of channels that extends everywhere in the cytoplasm (transports materials such as proteins)

Smooth ER: does not have ribosomes attached (production of membrane phospholipids)

Rough ER: Which does have ribosomes and is therefore a site of protein synthesis.

Question 4

Golgi apparatus

Answer 4

structure of flattened sacs which, collect, package, modify and distribute materials such as proteins.

. modifies products of the ER
. manufactures certain macromolecules
. sorts and packages into transport vesticles

Question 5

lysosome

Answer 5

sac of enzyme that can digest foreign substances. (lipids, carbs, proteins).

Question 6

Mitochondria

Answer 6

Site of aerobic cellular respiration and generates ATP.

Question 7

Nucleus

Answer 7

contains cell DNA

• pores in membrane for communication with other cells
• contains a nucleuos which is involved in ribosome production
• contains Chromatin

Question 8

Ribosome

Answer 8

carries out protein synthesis in 2 locations

• cytosol
• outside of the rough ER

Question 9

centrosome and centrioles

Answer 9

both play a major role in cell division.

Question 10

chloroplast

Answer 10

the site of photosynthesis in plant cells

Question 11

cell wall

Answer 11

structure made of tough cellulose fibres which protects the plant cell and maintains shape

Question 12

large vacuole

Answer 12

stores water, nutrients, metabolic wastes and toxins ready for removal, and protects the rest of the plant cell.