31. A layer of cells immediately surrounding the ovum but outside the zona pellucida is called__.
[A] germinal epithelium
[B] corona radiata
[C] theca interna
[D] membrane granulosa
Show Answer
Correct Answer: B [corona radiata]
Notes:
A layer of cells immediately surrounding the ovum but outside the zona pellucida is called corona radiata.
32. The population of the vagina with semen during coitus is called __.
[A] Insemination
[B] Outsemination
[C] Copulation
[D] Fertilization
Show Answer
Correct Answer: A [Insemination]
Notes:
Sperm along with other contents of semen populate the vagina. This process is called conception or Insemination.
33. Which of the following can cause hepatitis?
[A] an improperly functioning immune system
[B] alcohol and medicines
[C] viruses
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
An improperly functioning immune system, alcohol, medicines, and viruses can cause hepatitis. This is a viral disease, that causes hepatic anorexia resulting in liver damage or jaundice.
34. The tendency of an offspring to resemble its parent is known as ___
[A] Variation
[B] Heredity
[C] Resemblance
[D] Inheritance
Show Answer
Correct Answer: B [Heredity]
Notes:
The genetic heritage passed down by our biological parents is known as Heredity.
35. Which transgenic tomato variety has a better shelf life?
[A] Lyco 100
[B] PHB tomato
[C] Bt tomato
[D] Flavr savr
Show Answer
Correct Answer: D [Flavr savr]
Notes:
Flavr savr is a transgenic tomato variety that has a better shelf life and was the first GM food crop to be used commercially.
36. What is the normal blood pressure in human beings?
[A] 120/90
[B] 120/80
[C] 140/90
[D] 140/100
Show Answer
Correct Answer: B [120/80]
Notes:
According to the American Heart Association (AHA), normal blood pressure is a systolic pressure of less than 120 millimeter of mercury (mm Hg) and a diastolic pressure of less than 80 mm Hg, or 120/80 mm Hg. Having a blood pressure greater than 140/ 90 mm Hg is considered high blood pressure or hypertension.
37. Which among the following disease is NOT caused by viruses?
[A] Polio
[B] Chicken Pox
[C] Typhoid
[D] Influenza
Show Answer
Correct Answer: C [Typhoid]
Notes:
Typhoid fever, also known simply as typhoid, is a bacterial infection due to Salmonella typhi, also known as Salmonella enterica serotype typhi, that grows in the intestines and blood. Typhoid is spread by eating or drinking food or water contaminated with the feces of an infected person.
38. Where does the cabbage store food?
[A] Leaves
[B] Root
[C] Stem
[D] Fruit
Show Answer
Correct Answer: A [Leaves]
Notes:
Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
39. The largest cells in mammalian blood are ____:
[A] Monocytes
[B] Lymphocytes
[C] Erythrocytes
[D] Basophils
Show Answer
Correct Answer: A [Monocytes]
Notes:
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leucocytes (White Blood Cells) and Thrombocytes/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 cm in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
40. Lymph carries digested and absorbed fat from ____:
[A] Lungs
[B] Kidney
[C] Stomach
[D] Intestine
Show Answer
Correct Answer: D [Intestine]
Notes:
Lymphatic system carries out the absorption of fats and fat-soluble vitamins from the digestive system and the subsequent transport of these substances to the venous circulation. Lymphatic vessels present in the intestinal villi absorb fatty acids and carries the digested food and fats from the small intestine. It acts as a reservoir of digested food and water.
