Which one of the following sets of ions is necessary in the chemical events for muscle contraction?
Options
(a) Na⁺ and K⁺ (b) Na⁺ and Ca⁺⁺ ions (c) Na⁺ and Mg⁺⁺ ions (d) […]
The vacuole is lined by a membrane called
Options
(a) cell membrane (b) tonoplasm (c) tonoplast (d) jacket
Correct Answer:
tonoplast
Explanation:
No explanation available. Be the first to write the explanation for […]
The bioassay of auxin is
Options
(a) Avena curvature test (b) callus formation (c) culture of fungus (d) seed dormancy
Correct Answer:
Avena curvature test
Explanation:
Bioassay is a testing of biological activity […]
Oxysomes and cristae are present in
Options
(a) chloroplast (b) ER (c) mitochondria (d) ribosomes
Correct Answer:
mitochondria
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Induction of flowering by low temperature treatment is
Options
(a) photoperiodism (b) pruning (c) vernalization (d) cryobiology
Correct Answer:
vernalization
Explanation:
Photoperiodism is the response of plants to the relative lenght of day […]
In cell cycle, during which phase, chromosomes are arranged in equatorial plate?
Options
(a) telophase (b) prophase (c) metaphase (d) anaphase
Correct Answer:
metaphase
Explanation:
No explanation available. Be the first to write the […]
For a simple pendulum performing simple harmonic motion, the time period is plotted against its length. The curve will be
Options
(a) straight line (b) circle (c) parabola (d) ellipse
Correct Answer:
parabola
oxidation state of oxygen in F₂O is
Options
(a) 2 (b) -2 (c) 1 (d) -1
Correct Answer:
2
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Which of the following is the largest gland in an adult man?
Options
(a) thyroid (b) liver (c) thymus (d) pancreas
Correct Answer:
liver
Explanation:
No explanation available. Be the first to write […]
Rh factor is present in
Options
(a) all vertebrates (b) all mammals (c) all reptile (d) man and rhesus monkey only
Correct Answer:
man and rhesus monkey only
Explanation:
No explanation available. Be […]
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