Competitive Exams: Zoology MCQs (Practice_Test 16 of 112)
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- Pantothenic acid is a constituent of the coenzyme involved in
- acetylation
- decarboxylation
- oxidation
- reduction
- Compared to resting stage, vigorously contracting muscle shows
- increased conversion of pyruvate to lactate
- decreased NADH/NAD + ratio
- decreased AMP concentration
- decreased Level of fructose 2,6-biphosphate
- Consider the following enzymes of glycolytic pathway:
- Glyceraldehyde-3-phosphate dehydrogenase
- Enolase
- Pyruvate kinase
- Phosphoglycerate kinase
The correct order in which they appear in the pathway is
- 2,1, 4,3
- 3,2, 1,4
- 4,3, 2,1
- 1,4, 2,3
- Out of the following, which is the rate limiting enzyme in glycolysis?
- Pyruvate kinase
- Phosphofructo kinase
- Phosphogluco isomerase
- Gluco kinase
- The postovulatory regression of the corpus luteum is caused by
- a decrease in LH secretion
- a decrease in FSH secretion
- reduction in the steroidogenic capacity of the corpus
- luteum
- an increase in HCG secretion
- When parathyroid gland is surgically removed from a mammal, the blood level of
- calcium and phosphorus increase
- calcium and phosphorus decrease
- calcium increases while that of phosphorus decreases
- calcium decreases while that of phosphorus increases.
- Which one o. The following is NOT a neuropeptide hormone?
- ADH
- Oxytocin
- Somatomedin
- TRH
- Which one of the following statements is correct?
- Simple lipids are esters of fatty acids with various alcohols
- Complex lipids are esters of fatty acids with various alcohols
- Phospholipids contain only fatty acids and an alcohol
- Neutral Lipids. Are cholesterols and waxes
- Which one of the following pairs is NOT correctly matched?
- Bioluminescent polychaete
- Chaetopterus
- Protrusible pharynx with strong teeth
- Nereis
- Trochophore larva
- Megascolex
- Metameric segmentation
- Hirudinaria
- Which one of the following establishes a commensal association with Eupagurus living in a gastropod shell?
- Adamsia
- Zoochlorella
- Aurelia
- Ctenoplana
- Which one of the following is a siphonophore and exhibits polymorphism?
- Plumularia
- Gorgonia
- Alcyonium
- Parpita
- Pedicellariae in echinoderms serve as
- defence and cleansing organs
- filtering and gustatory organs
- Gustatory and locomotory organs
- organs of locomotion and food capture
- Ammocoetes larva is characteristic of
- eel
- lampreys
- Hagfishes
- Coelacanth
- Wheel organ and Hatschek՚s pit are present in
- Myxine
- Petromyzon
- Herdmania
- Branchiostoma
- Which one of the following is neither a fish nor a snake but an amphibian?
- Anguilla
- Typhlops
- Ophiosaurus
- Ichthyaphis