Mock

Question 1

glycosidic bonds are mainly in

Answer 1

carbohydrates (disaccharideas a polysaccharids)

Question 2

dna polymerase is not ivolved in

Answer 2

transcription

Question 3

in transcription, which strandhas a copy made

Answer 3

antisense, not sense

Question 4

non coding dna can code for

Answer 4

functioinal rna like trna

Question 5

translation happens at

Answer 5

ribosomes

Question 6

describe protomer

Answer 6

binding site for rna polymerase e non coding sequence

Question 7

hypertonic vs hypotonic

Answer 7

hypertonic (more er) more solute, causing water to leave a cell (shrinking it);

hypotonic means a solution has less solute (more water), causing water to enter a cell (swelling/bursting it).

Question 8

water potential equation and explanation

Answer 8

water potential = solute potential + pressure potential

Ψw= Ψs+ Ψp

Question 9

what type pf radiation causes the green house effect

Answer 9

green house gases absorb mainly long wave radiation (heat)

Question 10

primary protein struture

sequence of ….
formed w
determines…

Answer 10

sequence of AA to make pp chain

formed w covalent peptide bonds between amine and carboxyl groups of adjacent aa

determines interacions between R groups of AA

Question 11

2ndary structure of ptoreins

way the pp-…..
folrs as result….
which providespp…..

Answer 11

the way pp folds to form a-helicases and beta-pleated sheets

folds in way as result of H bond between amine e carboxyl groups

provides pp hcain with mechanical stabiloty due to h bonds

Question 12

tertiary structur protein

way pp…..
caused by..
posit
may impact..

Answer 12

way pp chain coils to form 3d shape

caused by interactions of R groups icluding H bonds, disulfide bridges, ionic bonds and hydrophobic interactions

aa positionins are important (polar w water)

may impact function of protein eg active site

Question 13

quaternary structure

Answer 13

happen in proteins w more than 1 pp chain liked otogether LIKE

insiulin 2 chain
collagen 3 chain

OR if they are conjugated protein (have inorganc prosthetic group in strucue)
like haemogloblin caaue has iron conainig haeme group in each subunit

NOT ALL PROTEINS HAV THIS

Question 14

stop codons

Answer 14

UAA
UAG
UGA

Question 15

start codons

Answer 15

AUG

Question 16

phases of cell cycle

Answer 16

interphase g1
interphase s
interphase g2
nuclear division

Question 17

5 events of meiosis

Answer 17

replication of dna
formation of bivalents
crossing over
reductinist devision
haploid gametes form

Question 18

mitotic index formula

Answer 18

dividing the number of cells in mitosis (prophase, metaphase, anaphase, telophase) by the total number of cells counted, then multiplying by 100 for a percentage.

Question 19

crosssing over happens with

Answer 19

homologoy pairs of chromasomes

Question 20

meiosis 1 can be describes as a …..devi

Answer 20

reductionist division

Question 21

how does meiosis generate genetic diversity

Answer 21

random orientation of bivalents e crossing over

Question 22

what Is a bivalent

Answer 22

paired homologous chromosomes during meiosis

on M and one P

same genes in same order, but variants (alleles differ)

they wiull do crossing over