1. Which of the following is not present in animal cells?
[A] Cell walls
[B] Mitochondria
[C] Ribosomes
[D] Cytoplasm
Show Answer
Correct Answer: A [Cell walls]
Notes:
Animal cells do not have cell walls. Cell walls are found in plant cells. Other given organelles like Mitochondria, Ribosome and Cytoplasm are present in animal cells.
2. Hemoglobin in humans has the highest affinity for which of the following gases?
[A] Methane
[B] Carbon Monoxide
[C] Nitrous oxide
[D] Carbon dioxide
Show Answer
Correct Answer: B [Carbon Monoxide]
Notes:
Hemoglobin in humans has a very high affinity for carbon monoxide, forming carboxyhemoglobin which is a very bright red in color. Carbon monoxide is thus problematic for humans because it has affinity higher than that of oxygen.
3. From which among the following parts of a plant Cinnamon is obtained?
[A] Leaves
[B] Seeds
[C] Bark
[D] Buds
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Correct Answer: C [Bark]
Notes:
Cinnamon is produced from inner bark of the cinnamon trees.
4. The web of the spider is made up of which among the following?
[A] Carbohydrate Polymers
[B] Proteins
[C] Lipids
[D] Polysaccharides
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Correct Answer: B [Proteins]
Notes:
Spiders use their silk to make web. Spider silk is made out of protein.
5. A doctor, while using the Sphygmomanometer to measure the blood pressure of a patient, also uses the Stethoscope to listen a whooshing sound of blood, in which among the following arteries?
[A] Radial Artery
[B] Brachial Artery
[C] Auxiliary Artery
[D] Median Artery
Show Answer
Correct Answer: B [Brachial Artery]
6. Which among the following diseases is characterized by “complete loss of memory”?
[A] Amnesia
[B] Schizophrenia
[C] Alzheimer’s disease
[D] Parkinson’s disease
Show Answer
Correct Answer: A [Amnesia ]
Notes:
Amnesia refers to a loss of memory due to illness, injury, drug abuse or other causes.
7. Which of the following bacteria forms an endosymbiotic nitrogen fixing association with roots of legumes that helps in Nitrogen Fixation?
[A] Clostridium
[B] Rhizobium
[C] Salmonella
[D] Staphylococcus
Show Answer
Correct Answer: B [Rhizobium]
Notes:
Rhizobium Found in roots of legumes, like Peas, grams, Pulses etc, where it fixes atmospheric nitrogen as ammonia, which is then converted into useful amino acid.
8. Which of the following is the source of adult human stem cell?
[A] Liver
[B] Bone Marrow
[C] Brain
[D] Medulla
Show Answer
Correct Answer: B [Bone Marrow]
9. In which among the following diseases, Seed Therapy is used now a days for treatment?
[A] AIDS
[B] Tuberculosis
[C] Cancer
[D] Asthama
Show Answer
Correct Answer: C [Cancer]
10. Least generative power is a feature of which among the following cells of Human Body?
[A] Brain
[B] Bones
[C] Skin
[D] Liver
Show Answer
Correct Answer: A [Brain]
