NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 24 of 112)
Get top class preparation for competitive exams right from your home: get questions, notes, tests, video lectures and more- for all subjects of your exam.
- What is the correct sequence of electron transport in a respiratory chain?
- Ubiquinone-Flavoprotein-NADH-Cytochrome a-Cytochrome b-Cytochrome c-Cytochrome c1
- NADH-Flavoprotein-Ubiquinone-Cytochrome b-Cytochrome c1-Cytochrome c-Cytochrome a
- Flavoprotein-NADH-Ubiquinone-Cytochrome a-Cytochrome c-Cytochrome c1 − k Cytochrome b
- NADH-Ubiquinone-Flavoprotein-Cytochrome c-Cytochrome c1-Cytochrome b-Cytochrome a
- Mixture of oil in water forms an emulsion. If a protein is shaken up with such an emulsion
- protein molecules settle down
- coalescence of oil particles takes place
- a thin film of protein molecules is formed on the surface
- the emulsion gets stabilised
- Nissle granules in a nerve cell are now identified as
- ribosomes
- rough endoplasmic reticulum
- mitochondria
- lysosomes
- Among which one of the following groups of chemicals, all are neurotransmitters?
- Somatostatin, serotonin, acetylcholine
- Non-adrenaline, somatostatin, threonine
- Glycine, dopamine, melatonin
- Acetylcholine, non-adrenaline, dopamine
- Profound confusion, memory loss and changes in per-sonality are some of the symptoms of
- Parkinson՚s disease
- Alzheimer՚s disease
- Schizophrenia
- Progeria
- Physiologically vitamin E is known to be
- anti-inflammatory
- a power antioxidant
- an important co-enzyme
- anti-hypertensive factor
- The enzymatic reaction for which thiamin pyrophosphate functions as a cofactor is
- fixation of carbon dioxide
- peptide bond formation
- phosphate group transfer
- decarboxylation of a-keto acids
- Which one of the following compounds is NOT a constituent of the electron transport system?
- Carnitine
- Cytochrome c
- Nicotinamide adenine dinucleotide
- Ubiquinone
- Cyclic AMP (cAMP) is degraded to AMP by an enzyme called
- restriction endonuclease
- adenyl cyclase
- phosphodiesterase
- ATPase
- At the completion of glycolytic process the products formed are
- two pyruvic acid molecules
- two lactic acid molecules
- one molecule each of lactic acid and ethanol
- two acetyl coenzyme molecules
- Which one of the following glycolytic enzymes is inhibited by fluoride?
- Lacate dehydrogenase
- Pyruvate kinase
- Enolase
- Hexokinase
- What is true about sweat glands in humans?
- Sweat glands are intimately associated with hair follicles
- There are emergency excretory structures to give out urea
- Human races inhabiting arctic regions, such as Eskimos have the least number of sweat pores per unit area of the skin
- Their secretion makes the skin waterproof and making it unsuitable for the microorganisms to settle on it
- Consider the following statements: In citric acid cycle
- three hydride ions (hence, six electrons) are transformed to 3 NAD + molecules
- one pair of hydrogen atoms (hence, two electrons) are transferred to one NADP + molecule
- one pair of hydrogen atoms (hence, two electrons) are transferred to a FAD molecule
- one NADH molecule is utilized in the process
- Which of the above statements are correct?
- 1 and 2
- 1 and 3
- 2 and 4
- 1,3 and 4
- Free energy liberated during oxidation per mole of palmitic acid. Is? G (cal⟋mole)
- -4600
- -326,000
- -686,000
- -2,338, 00
- Cholecystokinin stimulates secretion of:
- bile juice
- pancreatic juice rich in digestive enzymes
- pancreatic juice rich in sodium bicarbonate
- glucagon from endocrine pancreas