Enzymes __________________ the activation energy of a chemical reaction?
A. Increases
B. Decreases
C. Does not effect
D. Increases or decreases depending upon individual enzyme
Biology Mcqs
Amoeboid movements and movement of cyclosis is due to_________?
Amoeboid movements and movement of cyclosis is due to_________?
A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. Cytoskeleton
Which step causes activation of catalytic site of an enzyme__________________?
Which step causes activation of catalytic site of an enzyme__________________?
A. Change in pH of the surroundings.
B. Formation of Enzyme Susstrate complex.
C. Change in the charge of the active site.
D. Change in temperature
Lock and Key model was proposed by______________?
Lock and Key model was proposed by______________?
A. Emil Fischer
B. Koshland
C. Robin Williams
D. Rudolph Virchow
Ribonucleo-protein particles are the name of__________?
Ribonucleo-protein particles are the name of__________?
A. DNA
B. Nucleus
C. Eukaryotic ribosomes
D. RNA
Chlorophyll is a/an _____ molecule?
Chlorophyll is a/an _____ molecule?
A. Inorganic
B. Cationic
C. Anionic
D. Organic
Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________?
Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________?
A. F.Miescher
B. Chargaff
C. Watson & Crick
D. Harshay & Chase
The type of plastids which help in pollination is_________?
The type of plastids which help in pollination is_________?
A. Chromoplasts
B. Leucoplasts
C. Chloroplasts
D. All of these
Sickle cell anemia is an example of_________________?
Sickle cell anemia is an example of_________________?
A. Chromosomal aberration
B. Insertion of gene
C. Deletion of gene
D. Point mutation
Embryonic induction is caused by part developing from_____________?
Embryonic induction is caused by part develog from_____________?
A. Endoderm
B. Ectoderm
C. Mesoderm
D. Extraembryonic layers