11. Trichology is related to which of the following statement?
[A] Study of nutrition
[B] Study of skin and stuffing
[C] Study of bony joints and ligaments
[D] Study of hair
Show Answer
Correct Answer: D [Study of hair]
Notes:
Trichology is the science of the structure, function and diseases of human hair.
12. The branch of science that deals with the study of the mental faculties of the brain including emotions is known as__?
[A] Phenology
[B] Phycology
[C] Phrenology
[D] Proctology
Show Answer
Correct Answer: C [Phrenology]
Notes:
The branch of science that deals with the study of the mental faculties of the brain including emotions is known as Phrenology.
13. Who proposed the model for protein synthesis?
[A] Ostwald Avery
[B] Mclyn McCarthy
[C] Colin Macleod
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
Ostwald Avery, McLean McCarthy and Colin MacLeod proposed a model for the process of protein synthesis with the help of DNA in bacterial cells. Cell growth, synthesis of DNA, synapsis and synthesis of proteins.
14. Why don’t diatoms perish quickly?
[A] Because they are Chitinous
[B] because it has siliceous walls
[C] because Diatoms contain saline soil
[D] because their body is impervious to water
Show Answer
Correct Answer: B [because it has siliceous walls]
Notes:
Diatoms are unique among microorganisms in that they have rigid cell walls made of silica, called frustules. These frustules are intricately patterned and provide protection to the diatom cell. The silica frustules are durable and resist decomposition, which helps diatoms to maintain their structural integrity and avoid rapid decay.
15. Which of the following contains an anticodon?
[A] tRNA
[B] mRNA
[C] rRNA
[D] DNA
Show Answer
Correct Answer: A [tRNA]
Notes:
An anticodon is found at one end of the transfer RNA (tRNA) molecule. During protein synthesis, each time an amino acid is added to the growing protein. A tRNA forms base pairs with its complementary sequence on the mRNA molecule and ensures that the appropriate amino acid is inserted into the protein.
16. What is the shape of enveloped viruses?
[A] icosahedral
[B] helical
[C] roughly spherical
[D] complex
Show Answer
Correct Answer: C [roughly spherical]
Notes:
The shape of enveloped viruses is roughly spherical. Enveloped virus have glyco-protein spikes that arise from their envelopes.
17. Which of the following are the most primitive vascular plants?
[A] Mosses
[B] Cycads
[C] Kelps
[D] Ferns
Show Answer
Correct Answer: D [Ferns]
Notes:
A fern is a member of a group of vascular plants. It reproduces by means of spores and has neither seeds nor flowers.
18. The cytoplasmic membrane of which of the following organisms contains sterols?
[A] Clostridum
[B] Proteus
[C] Mycoplasma
[D] Bacillius
Show Answer
Correct Answer: C [Mycoplasma]
Notes:
Mycoplasma is a genus of bacteria that do not have a cell wall surrounding the cell membrane.
19. Guava leaves come under the category of which of the following leaves?
[A] Simple Leaf
[B] Compound Leaf
[C] Both 1 and 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: A [Simple Leaf]
Notes:
When a single lamina is attached to the main stem by a petiole, the leaf is said to be simple, as in guava leaves.
20. Bignonia unguiscati is an example of which of the following?
[A] Leaflet Hooks
[B] Leaf Roots
[C] Scale Leaves
[D] Leaf Spines
Show Answer
Correct Answer: A [Leaflet Hooks]
Notes:
Leaflet Hooks is the terminal leaflets of the leaf become modified into hook-like structures that help them to climb. Bignonia unguiscati is an example of this.
