21- Which of the following is the main transmitter for synapse that lies outside the central nervous system?
A. Adrenaline
B. Nor-epinephrine
C. Serotonin
D. Acetylcholine
View Answer
Answer : D. Acetylcholine
Description
22- Which of the following muscles that make the walls of heart and are NOT present anywhere else in the body?
A. Smooth muscles
B. Cardiac muscles
C. Skeletal muscles
D. Voluntary muscles
View Answer
Answer : B. Cardiac muscles
Description
23- When the muscle is required to contract, calcium ion binds with ______ molecule and causes them to move slightly.
A. Actin
B. Myosin
C. Troponin
D. Tropomyosin
View Answer
Answer : C. Troponin
Description
24- Which of the following are present in the internal organs like stomach, intestine etc.?
A. A
B. B
C. C
D. Both A and B
View Answer
Answer : D. Both A and B
Description
25- Sarcoplasmic reticulum is like endoplasmic reticulum but devoid of ______ and exhibit a highly specialized ______ pattern.
A. Ribosome, repeating
B. Mitochondrion, repeating
C. Ribosome, simplified
D. Mitochondrion, simplified
View Answer
Answer : A. Ribosome, repeating
Description
26- If we cross round yellow seeded plant with green wrinkled seeded plants, what will be phenotypic ratio at F2 generation?
A. 9:3:3:1
B. 9:4:3:2
C. 3:9:3:1
D. 8:3:3:2
View Answer
Answer : A. 9:3:3:1
Description
27- If we cross round (RR) seeded plants with wrinkled (rr) seed plant, and get F1 round seeded. In F2 generation, what will be genotypic ration of plants by Punnet square method?
A. 3:1
B. 1:1
C. 1:1:2
D. 1:2:1
View Answer
Answer : D. 1:2:1
Description
28- A continuously varying trait is encoded by alleles of two or more different genes located at different loci, all influencing the same trait from additive way is known as ______.
A. Poly traits
B. Polygenes
C. Multiple alleles
D. Different genes
View Answer
Answer : B. Polygenes
Description
29- To check the homozygosity or heterozygosity of apparently dominant trait, we do the test cross by crossing it with:
A. Any Document trait
B. Homozygous dominant trait
C. Homozygous Recessive trait
D. Heterozygous dominant trait
View Answer
Answer : C. Homozygous Recessive trait
Description
30- The total number of genes present in a particular population, at a particular time is equal:
A. Gene
B. Genome
C. Genotype
D. Gene Pool
View Answer
Answer : D. Gene Pool
Description
31- Phenotype for both TT and Tt is tall, so the allele T is known as:
A. Dominant
B. Recessive
C. Homozygous
D. Heterozygous
View Answer
Answer : A. Dominant
Description
32- Which of the following is a physical relationship of genes present on same chromosomes?
A. Epistasis
B. Gene Linkage
C. Crossing over
D. Pleiotropy
View Answer
Answer : B. Gene Linkage
Description
33- Which of the following X-linked dominant trait that is more common in human females than in human males?
A. Sickle cell Anemia
B. Hemophilia
C. Color Blindness
D. Hypophosphatemic rickets
View Answer
Answer : D. Hypophosphatemic rickets
Description
34- Luteinizing hormone, which is produced by the pituitary gland, promotes ovulation and stimulate the ovaries to produce:
A. Estrogen
B. Estrogen and progesterone
C. Prolactin
D. Oxytocin
View Answer
Answer : B. Estrogen and progesterone
Description
35- Follicle-stimulating hormone, which is produced by the pituitary gland, stimulates the ovaries to produce:
A. Estrogen
B. Progesterone
C. Oxytocin
D. Prolactin
View Answer
Answer : A. Estrogen
Description
36- The cell A, in the given figure is:
A. Gametophyte
B. Oogonium
C. Spermatocyte
D. Spermatid
View Answer
Answer : B. Oogonium
Description
37- Menstruation is the shedding of the lining of the uterus (endometrium) accompanied by:
A. Shivering
B. Fever
C. Bleeding
D. Vomiting
View Answer
Answer : C. Bleeding
Description
38- Which of the following is the constituent of RNA molecule?
A. Fatty acids
B. Ascorbic acid
C. Deoxyribonucleic acid
D. Ribonucleic acid
View Answer
Answer : D. Ribonucleic acid
Description
39- Which of the following are instant source of energy in living organisms, like glucose? Their general formula is:
A. Cₓ(H₂O)ᵧ
B. C₆(H₁)O₆
C. Cₓ(H₂O)ₓ
D. Cₓ(H₂O₂)ᵧ
View Answer
Answer : A. Cₓ(H₂O)ᵧ
Description
40- Which of the following are the most prominent part of cell membranes in living organisms?
