Cellular Ultrastructure

Question 1

Centriole

Answer 1

Used for animal cells to reproduce. release long, stiff fibres called microtubules that split the cell apart during cell division.

Question 2

Nucleus

Answer 2

Controls and regulates activities of the cell. (e.g growth and metabolism)

Question 3

Nucleolus

Answer 3

Participates in assembling the ribosomes, alteration of transfer RNA and sensing cellular stress.

Question 4

Nuclear membrane

Answer 4

Separates the contents of the nucleus from the rest of the cell

Question 5

Lysosome

Answer 5

Contains digestive enzymes. Break down excess or worn-out cell parts. May be used to destroy invading bacteria

Question 6

Smooth Endoplasmic reticulum

Answer 6

synthesis of lipids, steroids and carbs. Also metabolism of exogenous substances like drugs.

Question 7

Rough Endoplasmic Reticulum

Answer 7

Produce proteins for the rest of the cell to function

Question 8

Golgi Apparatus

Answer 8

Packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination

Question 9

Ribosomes

Answer 9

particles within the cytoplasm, consisting of RNA and protein. Is the site of protein synthesis

Question 10

Cytoplasm

Answer 10

Holds the organelles in place and protects them from damage. Stores molecules used for cellular processes, and hosts many of these processes within the cell itself.

Question 11

Cell membrane

Answer 11

separates the interior of cells from the outside environment, which protects the cell from its environment.

Question 12

Mitochondria

Answer 12

Generate energy

Question 13

Cytoskeleton

Answer 13

Inner structural elements of a cell. provides both structural support and a means of transport