31. Gelatin is a protein made from __.
[A] Keratin
[B] Elastin
[C] Collagen
[D] All of the above
Show Answer
Correct Answer: C [Collagen]
Notes:
Gelatin is a protein made from Collagen. Collagen is one of the materials that make up cartilage, bone, and skin. Gelatin is used for the preparation of foods, cosmetics, and medicines.
32. How do neurons communicate with one another?
[A] Electrically
[B] Chemically
[C] Through weak, radio-wave-like impulses
[D] Both 1 & 2
Show Answer
Correct Answer: D [Both 1 & 2]
Notes:
Neurons communicate with each other through electrical events called ‘action potentials’ and chemical neurotransmitters.
33. Granulocytes and agranulocytes are a classification of which of the following?
[A] White blood cells
[B] Red blood cells
[C] Platelets
[D] Homeostasis
Show Answer
Correct Answer: A [White blood cells]
Notes:
Granulocytes and agranulocytes are a classification of White blood cells. Granulocytes are leukocytes, with the presence of granules in their cytoplasm while Agranulocytes are leukocytes, with the absence of granules in their cytoplasm.
34. Which of the following cells of the immune system does not perform phagocytosis?
[A] Macrophage
[B] Neutrophil
[C] Eosinophil
[D] Basophil
Show Answer
Correct Answer: D [Basophil]
Notes:
Basophils are a type of white blood cell. They have the ability to help detect and destroy some early cancer cells.
35. Due to which process the waste is removed from our body?
[A] Excretion
[B] Respiration
[C] Exhalation
[D] Double Circulation
Show Answer
Correct Answer: A [Excretion]
Notes:
Due to excretion, waste is removed from our bodies with the help of organs. The kidney excretes urea and carbon dioxide from the lungs.
36. Into how many parts is the Urinary bladder divided?
[A] One
[B] Two
[C] Three
[D] Four
Show Answer
Correct Answer: D [Four]
Notes:
The Urinary bladder is divided into 4 parts. They are abroad corpuscle, a body, a vertex, a neck.
37. Consider the following functions of the stomach:
- Temporarily store food
- Contract and relax to mix and break down food
- Produce enzymes and other specialized cells to digest food
Which of the above statements is / are correct?
[A] Only 1 and 2
[B] Only 2 and 3
[C] Only 1 and 3
[D] 1, 2 and 3
Show Answer
Correct Answer: D [1, 2 and 3]
Notes:The functions of the stomach are:
- It temporarily stores food
- It contracts and relaxes to mix and break down food
- It produces enzymes and other specialized cells to digest food
Thus, all the given statements are correct.
38. Lassa and Ebola are emergent viruses in W. Africa. What is their origin?
[A] Humans
[B] Primates
[C] Fruit bats
[D] Pigs
Show Answer
Correct Answer: C [Fruit bats]
Notes:
Lassa and Ebola are emergent viruses in W. Africa originated by Fruit bats. Ebola hemorrhagic fever is caused by Ebola virus infection.
39. How are Infectious Diseases transmitted?
[A] Droplet Infection
[B] They are inherited
[C] By seeing patients
[D] Eating an unhealthy diet
Show Answer
Correct Answer: A [Droplet Infection]
Notes:
Infection can occur when a healthy person inhales droplets from the saliva, sputum, or nasal passages of an infected person.
40. Some strains of Bacillus thuringiensis can kill certain insects such as __.
[A] Lepidoptera
[B] scorpion
[C] fruit fly
[D] dragonfly
Show Answer
Correct Answer: A [Lepidoptera]
Notes:
Some strains of Bacillus thuringiensis can kill certain insects such as Lepidoptera. They are an order of insects consisting of moths and butterflies.
