1. What are the two categories of cell which nervous system is made up of__?
[A] Satellite cell and Boettcher cell
[B] neurons and glial cells
[C] Gastric chief cell, Parietal cell
[D] Tendon cell and Macula densa cell
Show Answer
Correct Answer: B [neurons and glial cells]
Notes:
The Nervous system is made up of two types of cells: Glia, which regulate homeostasis, providing support and protection to the function of neurons and Neurons, which transmit signals between them and from one part of the body to another.
2. Amino acids join together to make polypeptides. What polypeptides make by joining together?
[A] Carbohydrates
[B] proteins
[C] vitamins
[D] All the above
Show Answer
Correct Answer: B [proteins]
Notes:
Proteins are made up of chains of amino acids bound by bonds called peptide bond. There are some 22 different known amino acids which can compose proteins. There may be many more unknown to us.
3. Onion, daffodil, tulip are which kind of stems?
[A] Bud
[B] Bulb
[C] Cladophyll
[D] None of the above
Show Answer
Correct Answer: B [Bulb]
Notes:
Onion, daffodil, tulip are bulb stems. The best example of a true bulb is the onion. The rings which we see when we slice an onion in half are actually leaves modified to hold food for the bulb when it is dormant.
4. Which of the following Vitamin is essential for the formation of collagen?
[A] Vitamin A
[B] Vitamin B
[C] Vitamin C
[D] Vitamin D
Show Answer
Correct Answer: C [Vitamin C]
Notes:
Vitamin C is essential for the formation of collagen. The process of collagen synthesis occurs mainly in the cells of fibroblasts which are specialized cells with the main function of synthesizing collagen and stroma.
5. The reverse osmosis is the process of forcing a solvent from a region of high solute concentration through a membrane to a region of low solute concentration by applying a pressure on ________?
[A] Concentrated solution
[B] Dilute solution
[C] Membrane
[D] None of the above
Show Answer
Correct Answer: A [Concentrated solution]
Notes:
This process requires that a high pressure be exerted on the high concentration side of the membrane.
6. Which among the following: Ferns, Mosses, Algae and Fungi, contain chlorophyll?
[A] Ferns and Algae
[B] Mosses and Algae
[C] Algae, Ferns and Mosses
[D] None of the given options
Show Answer
Correct Answer: C [Algae, Ferns and Mosses]
Notes:
Chlorophyll, the photosynthetic pigment that gives plants their green color, is present in Algae, Ferns and Mosses, thus enabling them to convert sunlight to chemical energy through photosynthesis. Although fungi are a group of organisms often thought to be plants, they lack chlorophyll, and hence, they are non-photosynthetic, surviving instead on organic matter.
7. The birth of the first child will be a fatal situation in which of the following conditions?
[A] Male Rh+ & Female Rh-
[B] Male Rh- & Female Rh+
[C] Male Rh- & Female Rh-
[D] None of the above
Show Answer
Correct Answer: A [Male Rh+ & Female Rh-]
Notes:
The Rh factor is a protein that can be found on the surface of red blood cells. If your blood cells have this protein, you are Rh positive. The birth of the first child will be a fatal situation for Male Rh+ & Female Rh-.
8. The blood pressure is denoted as following?
[A] Systolic Pressure / Diastolic Pressure
[B] Diastolic Pressure / Systolic Pressure
[C] Venous Pressure / Systolic Pressure
[D] Systolic Pressure / Pulse Pressure
Show Answer
Correct Answer: A [Systolic Pressure / Diastolic Pressure]
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.
9. A particular cell organelle is sometimes referred certain enzymes that can break down the cell components or even the whole cell. which one of the following is such an organelle ?
[A] Lysosome
[B] Mesosome
[C] Phagosome
[D] Ribosome
Show Answer
Correct Answer: A [Lysosome]
Notes:
Lysosomes are membrane-bound cell organelles that contains digestive enzymes and are involved with various cell processes. They break down excess or worn-out cell parts and may be used to destroy invading viruses and bacteria.
10. Which among the following are found in all viruses?
[A] DNA and proteins
[B] Nucleic acid and capsid
[C] DNA and cell membrane
[D] RNA and cell wall
Show Answer
Correct Answer: B [ Nucleic acid and capsid]
Notes:
Viruses are made up of nucleic acid (either DNA or RNA; but not both) surrounded by a protein coat called a capsid. They do not contain a cell wall, proteins, or cell membrane
