31. A human communication system consists of a network of:
[A] arteries
[B] veins
[C] capillaries
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The human circulatory system consists of a network of arteries, veins and capillaries, through which the heart pumps blood.
32. Gastroesophageal reflux disease is related to which of the following?
[A] circulatory system
[B] digestive system
[C] respiratory system
[D] excretory system
Show Answer
Correct Answer: B [digestive system]
Notes:
Gastroesophageal reflux disease is related to the digestive system. Gastroesophageal reflux disease (GERD) occurs when stomach acid repeatedly backs up into the tube connecting your mouth and stomach (esophagus).
33. What is the number of autosomes in a human primary sperm cell?
[A] 46
[B] 44
[C] 23
[D] 22
Show Answer
Correct Answer: B [44]
Notes:
44 is the number of autosomes in a human primary sperm cell. An autosome is a chromosome, which is not a sex chromosome.
34. Which female organ serves as the birth canal to allow the delivery of the fetus during labor?
[A] Ovaries
[B] Uterus
[C] Fallopian Tubes
[D] Vagina
Show Answer
Correct Answer: D [Vagina]
Notes:
The vagina is a female reproductive organ that serves as the birth canal to allow the delivery of the fetus during labor.
35. In patients with hemophilia, which of these can increase the risk of cerebral microbleeds?
[A] cardiovascular risk factors
[B] increased age
[C] Hepatitis C infection
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
In patients with hemophilia, cardiovascular risk factors, age, and hepatitis C infection may increase the risk of cerebral microbleeds.
36. What diseases are caused by Staphylococcus aureus?
[A] skin infections
[B] endocarditis
[C] osteomyelitis
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
Skin infections and sometimes pneumonia, endocarditis, and osteomyelitis diseases are caused by Staphylococcus aureus. It is a type of Gram-positive round-shaped bacteria.
37. What can be associated with the theory of evolution?
[A] Charles Darwin
[B] Mendel
[C] Stanley Miller
[D] Harold Urey
Show Answer
Correct Answer: A [Charles Darwin]
Notes:
Charles Darwin can be associated with the theory of evolution. Evolution is the change in the characteristics of a species over several generations and depends on the process of natural selection.
38. Which of the following is not a connective tissue?
[A] Cardiac Muscle
[B] Areolar Tissue
[C] Compact Bone
[D] Adipose Tissue
Show Answer
Correct Answer: A [Cardiac Muscle]
Notes:
Connective tissue is a group of tissues in the body that maintain the form of the body and its organs and provide cohesion and internal support. Bone, ligaments, tendons, cartilage, and adipose (fat) tissue are examples of connective tissue. Cardiac muscle is an example of muscle tissue. It is so named because it is found in the heart.
39. What is thick vein present in the middle of the leaf called?
[A] Leaf venation
[B] Parallel venation
[C] Midrib
[D] Reticulate
Show Answer
Correct Answer: C [Midrib]
Notes:
A thick vein seen in the middle of the leaf is called the midrib. Pinnately veined leaves have one large central vein, called the midrib, which extends from the base of the blade to its tip. Other large veins branch off on each side of the midrib. The leaves of beech, birch, and elm trees have such a vein pattern.
40. What are the folds found in the mucous lining of the empty stomach?
[A] Typhlosole
[B] Areolae
[C] Rugae
[D] Villi
Show Answer
Correct Answer: C [Rugae]
Notes:
The inner layer of the stomach is full of wrinkles known as rugae (or gastric folds). Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food during digestion.
