General Science - Biology MCQs
1. Which of the following is not a part of the digestive system?
[A] Small Intestine
[B] Rectum
[C] Pharynx
[D] Spleen
Show Answer
Correct Answer: D [Spleen]
Notes:
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. The spleen is not part of the digestive system however is connected to the blood vessels of both the stomach and the pancreas.
2. Which among the following is the most important role played by Ribosome in the cells?
[A] Synthesis of RNA
[B] Synthesis of DNA
[C] Synthesis of Proteins
[D] Metabolism of Carbohydrates
Show Answer
Correct Answer: C [Synthesis of Proteins]
Notes:
The most important role played by Ribosome in the cells is the synthesis of proteins. Ribosomes are composed of special proteins and nucleic acids.
3. What is the number of “True Ribs” in human body?
Show Answer
Correct Answer: B [14]
Notes:
There are total 24 ribs (12 pairs), out of which 14 (7 pairs) are true ribs
4. Which among the following Vitamins helps in clotting of Blood?
[A] Vitamin C
[B] Vitamin D
[C] Vitamin E
[D] Vitamin K
Show Answer
Correct Answer: D [Vitamin K]
Notes:
Vitamin K is naturally produced by the bacteria in the intestines, and plays an essential role in normal blood clotting, promoting bone health, and helping to produce proteins for blood, bones, and kidneys.
5. Which among the following plant hormone plays most important role in establishing dormancy in seeds?
[A] Ethylene
[B] Gibberellic acid
[C] Abscisic Acid
[D] Auxin
Show Answer
Correct Answer: C [Abscisic Acid]
Notes:
Abscisic Acid plays the most important role in establishing dormancy in seeds. Abscisic Acid has also been found to be present in metazoans, from sponges up to mammals including humans.
6. Which among the following is not present in pure sugar ?
[A] Carbon
[B] Hydrogen
[C] Nitrogen
[D] Oxygen
Show Answer
Correct Answer: C [Nitrogen]
Notes:
Pure Sugar is sucrose C12H22O11
7. “Gnathology” is the study of which among the following?
[A] Teeth
[B] Jaws
[C] Masticatory System
[D] Tongue
Show Answer
Correct Answer: C [Masticatory System]
Notes:
Dr Beverly McCollum established the Gnathologic Society in 1926. Gnathology has been rapidly developed only in the last two decades, Gnathology is the study of the masticatory system, including its physiology, functional disturbances, and treatment.
8. Which among the following sugars is maximum in Honey?
[A] Glucose
[B] Sucrose
[C] Frcutose
[D] Maltose
Show Answer
Correct Answer: C [Frcutose]
Notes:
Honey is a sweet, viscous food substance made by honey bees and some related insects. Honey is considered to be a mixture of D-glucose, D-fructose, and sucrose with the maximum being Fructose.
9. Normal Human blood pressure is
[A] 110/110
[B] 120/70
[C] 120/80
[D] 140/60
Show Answer
Correct Answer: C [120/80]
Notes:
Blood Pressure is expressed in two numbers. The higher number is known as Systolic Pressure, or the amount of force (as measured in millimetres of mercury) that is exerted against the artery walls during a heartbeat (contraction). The lower number in the Diastolic pressure, which does the force exist while the heart is resting between beats.
10. The plant hormone Auxin is basically a ___?
[A] Weak Organic Acid
[B] Weak Inorganic Acid
[C] Weak Organic base
[D] Gaseous compound of carbon
Show Answer
Correct Answer: A [Weak Organic Acid]
Notes:
Auxins are a class of plant hormones with some morphogen-like characteristics. Auxin is basically a Weak Organic Acid and It is produced in the stem tip that promotes the elongation in the cells.
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