Introduction to the cell and biomolecules

Question 1

All functional activities of the body are carried out by what?

Answer 1

cells

Question 2

Cells only arise from …

Answer 2

pre existing cells via meiosis and mitosis

Question 3

Describe the four basic structures of protein

Answer 3

primary - amino acid sequence

secondary - regular sub-structure

tertiary - three dimentional structure i.e) beta sheets/chains

quaternary structure - complex of protein molecules

Question 4

Describe generally the structure of a lipid

Answer 4

hypdrophobic molecule

fatty acid

important part of the cell membrane

Question 5

What is the basic chemical formula of carbohydrates?

Answer 5

Question 6

Define a glycosidic bond

Answer 6

bond between two carboydrates- most often between the first carbon and fourth carbon on the rings

Question 7

Where is DNA stored in the cell?

Answer 7

They are stored in chromosomes in the nucleus

Question 8

What determines the fate of DNA?

Answer 8

The signals that a cell recieves - to remain quiescent, translate, or divide

Question 9

Describe the general stages of a cell cycle

Answer 9

G1= growth

S= DNA synthesis

G2 = growth and preparation for mitosis

M= cell division