IAT bio

Question 1

Phase of meiosis for genetic variation through “crossing over” between non sister comatrids

Answer 1

Prophase I

Question 2

Chiasmata is formed in which phase

Answer 2

Diplotene [Prophase I]

Question 3

Logistic population graph equation

Answer 3

dN / dt = r N [ K - N ]
K

Question 4

Exponentially population graph equation

Answer 4

dN/ dt = rN

N= N○ e^ RT

Question 5

MRNA produced from DNS template strand
5’ —–> 3’

Answer 5

5’—->3’
A=U
T=A

Question 6

Diff between C3 / C4 plants

Answer 6

C3
● photorespiration is present
● RUBISCO + CO2 —>phosphoglyseric acid (glucose)
● RUBISCO + O2 —->Phosphoglycolate
● 1st product —-> phosphoglyseric acid
● Site = mesophyll cells

C4
● 1st product —-> oxaloacetic acid
● Site = mesophyll [ carbon fixation ]
+ Bundle sheath cell [Calvin cycle ]
● Co2 is substrate for Calvin cycle
● Co2 fixation is PEPLase

Question 7

Plant Hormones

Answer 7

● Auxin - phototropism
apical dominance
Cell elongation
Endol derivative crypto aminoacid
● gibberellin - internodal elongation
Germination
● cytokinin - lateral growth
Cell division
Adenine derivative ( nitrogenous base)
● Ethyline - fruit ripening
Methonine ( gasseous harmone)
● ABA - Senuscence stress harmone
Pigment

Question 8

Protein plays direct role in muscle contraction

Answer 8

□Troponin

● Insulin —-> low blood sugar
● Myoglobin —> O2 storage
● Trypsin —-> digestion

Question 9

Acromegaly

Answer 9

Excess of growth harmone

Question 10

Bryophytes , Dominant stage in life cycle
-algae

Answer 10

Haploid gametophytes (n)

Question 11

Parathyroid hormone PTH leads to

Answer 11

Imcreas Ca reabsorption in kidneys amd bones

Question 12

C4 plants , CO2 is initially fixed in ______ cells and ______ is formed as first stable product

Answer 12

Mesophyll cells
Oxaloacetic acid

Question 13

Not defining characteris of living organism

Answer 13

Growth / Reproduction

Question 14

Enzyme relation with activation energy

Answer 14

Inversally proportional

Question 15

Respiratory Volumes and capacity

Answer 15

IC = TV+ IRV
EC= TV + ERV
VC = TV + IRV + ERV
FRC = ERV + RV
TLC = TV + IRV + ERV + RV

Question 16

Animals exhibit both radial symmetry and water vascular system

Answer 16

Echinidermata - starfish

Question 17

N = N○ e^rt

Answer 17

r - intrinsic growth rate
N○ - initial population
e - 2.7

Question 18

Role of loop of Henle is

Answer 18

Hyperosmotic gradient in medillary interstitium

Question 19

Hydra symnetry

Answer 19

Radial

Question 20

Substage in which Homologus chromosome undergo synapsis and form tetrads

Answer 20

Zygotene

Question 21

Ploidy
Aleurone cell
Microspore

Answer 21

3n
n

Question 22

Disordee when Father to son transition is absent on pedigree chart

Answer 22

X linked