Biology with Rashid Ali

23/03/2024

28/07/2023

What happens when two pyruvic acids form two lactic acids by anaerobic respiration?
(A) One ATP is lost
(B) 3 ATP are lost
(C) 6 ATP are lost
(D) 3 ATP are formed
(E) 2 ATP are lost

28/07/2023

Isomerization takes place in
i. Glycolysis
ii. Photophosphorylation
iii. Link reaction
(A) i only
(B) i and ii
(C) ii only
(D) i, ii and iii

28/07/2023

Which one of the following labeled structure in the diagram is responsible for the storage of the bile
(a) I
(b) ii
(c) iii
(d) iv

23/07/2023

If the external solution is less dilute than cytoplasm, then the external solution is said to be
(A) Hypotonic
(B) Hypertonic
(C) Isotonic
(D) Isothermal
(E) isobaric

23/07/2023

Accumulation of excess fluid in tissue spaces is
(A) Oedema
(B) Cirhosis
(C) Parkinson's disease
(D) Hodgkin's disease
The first electron acceptor in photosystem 1 is _____
(A) PQ
(B) Cytochrome b
(C) A Fe-S protein
(D) PC
(E) Fd
Cleavage of Fructose 1, 6-biophosphate yields _______.
(A) Two aldoses
(B) Two ketoses
(C) An aldose and a ketose
(D) Only a ketose
The substance that donates its electrons is called
(A) Reducing agent
(B) Oxidative agent
(C) Standard reduction potential
(D) Oxidant

19/06/2023

The amount of heat must be absorbed or lost by 1g of that substance to change its temperature by 1 C°
(A) Specific heat
(B) Heat of vaporization
(C) Both A and B
(D) None of these

19/06/2023

Malonate is the competitive inhibitor of Succinate dehydrogenase it inhibits the production of
(A) Malate
(B) Fumarate
(C) Succinate
(D) Oxalate

13/06/2023

Which one of the following does not differ in E.coli (bacterium) and Chlamydomonas (algae) ?
(a) Ribosomes
(b) Chromosomal Organization
(c) Cell wall
(d) Cell membrane
Grana and stroma lamellae are the parts of
(a) Mitochondria
(b) Chloroplast
(c) Endoplasmic reticulum
(d) Vacuoles

13/06/2023

In which method of transport in plasma membrane does not
require carrier molecule?
(a) Active transport
(b) Facilitated diffusion
(c) Simple diffusion
(d) Na+ K+pump
Which of the following is involved in the regulation of calcium levels in muscle cells, and the breakdown of toxins by liver cells.
(A) SER
(B) RER
(C) Glogi body
(D) Peroxisomes

13/06/2023

Which of the following is involved in the regulation of calcium levels in muscle cells, and the breakdown of toxins by liver cells.
(A) SER
(B) RER
(C) Glogi body
(D) Peroxisomes
Lysosomes are rare in plants. Their activity may be performed by .
(A) Vacuoles
(B) Peroxisomes
(C) Glyoxisome
(D) Ribosomes