Question: Enzymes are sensitive to
1. Heat
2. pH
3. Poisons
4. All three
Answer: 4
Question: Among the following ,which one lay eggs and does not produce young ones directly?
1. Echidna
2. Kangaroo
3. Porcupine
4. Whale
Answer: 1
Question: Which one of the Following is a free-living Bacterium that helps in nitrogen fixation in soil?
1. Azotobacter
2. Anabaena
3. Azolla
4. Nostoc
Answer: 1
Question: cholesterol is a
1. type of chlorophyll
2. derivative of chloroform
3. fatty alcohol founds in animal fats
4. chromium salt
Answer: 3
Question: Chemically, an enzyme is a
1. lipid
2. vitamin
3. protein
4. carbohydrate
Answer: 3
Question: Amino acids are the buliding blocks of
1. Vitamins
2. Starch
3. Proteins
4. Lipids
Answer: 3
Question: A vegetable containing sulphur is
1. Potato
2. Cabbage
3. Brinjal
4. pumpkin
Answer: 2
Question: blood haemoglobin has has high affinity for
1. CO2
2. CO
3. O2
4. H
Answer: 2
Question: Blood does not coagulate inside the body due to the presence of
1. haemoglobin
2. heparin
3. fibrin
4. plasma
Answer: 2
Question: Banana fruit contains mainly
1. glucose
2. starch
3. fat
4. proteins
Answer: 1
Question: An infectious disease caused by a spiral shaped bacterium, spread mainly by sexual contact is
1. Syphilis
2. AIDS
3. Cancer
4. Tuberculosis
Answer: 1
Question: All the following are invertebrates except
1. Snail
2. Crab
3. Prawn
4. Fish
Answer: 4
Question: Wisdom teeth are
1. last molars
2. last premolars
3. incisors
4. canines
Answer: 1
Question: Adensine Triphosphate (ATP) is
1. a an enzyme
2. a protein
3. a hormone
4. a molecule with high energy bounds
Answer: 4
Question: Acquired Immune- Deficiency Syndrome (AIDS) is caused by
1. Bacterium
2. Protozoa
3. fungus
4. Virus
Answer: 4
Question: A person suffering from beri beri should take
1. unpolished rice, green vegetables, yeast
2. egg yolk, fish, green vegetables
3. citrus fruit, mangoes, grapes
4. sweet potato, meat and milk
Answer: 1
Question: A mature living cell without a nucleus is a
1. Sieve cell
2. Sieve tube
3. Companion Cell
4. Vessel
Answer: 2
Question: A healthy freshwater fish is placed in saltwater. the expected consequence of this would be that
1. the fish becomes dehydrated and dies
2. the fish becomes bloated and dies
3. the fish suffers from a fungal or bacterial disease and dies
4. there is no observable effect on the fish provided there is sufficient food
Answer: 1
Question: A feature of fertilization that is found only in angiosperms is that:
1. the sperm may be carried by wind to the female organ
2. one sperm fertilizes the egg , while another combines with the polar nuclei
3. a pollen tube carries a sperm nucleus into the female gametophyte
4. a chemical attractant guides the sperm towards the egg
Answer: 2
Question: A doctor a patient to take plenty of citrus fruits, guavas, tomatoes and amalas over a period of two months regularly. What do you think the patient is suffering from ?
1. Softness and pain in bones, bending of vertebral column
2. spongy, Swoollen and bleeding gums
3. blurred vision, burning and dryness of eye and tongue, craking of skin at the corner of the mouth
4. extreme weakness, swelling and pain in legs , loss of appetite, headache
Answer: 2