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Biochemistry (GATE XL)

GATE XL Biochemistry exam covering cellular signaling, biomolecules, molecular biology, and developmental processes

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Choose the correct statement about wax.

  1. Wax made by bees is classified as lipid.
  2. Human ears make wax and this wax protects the inside of our ears.
  3. A substance called carbohydrate is found on the surfaces of plant leaves.
  4. Wax stops water from evaporating from leaves and protects the plant.
  5. None of these
Question 2 Multiple Choice (Single Answer)

Cell signalling is reported in

  1. replication
  2. mutation
  3. transcription
  4. interferon
  5. None of these
Question 3 Multiple Choice (Single Answer)

The tissue plasminogen factor is applicable for

  1. dissolving the unwanted blood clots
  2. treatment of diabetes
  3. viral diseases
  4. treatment of heamopilias
  5. None of these
Question 4 Multiple Choice (Single Answer)

Which of the following are polysaccharide compounds?

A. Glycogen
B. Cellulose
C. Starch
D. Sucrose

  1. A, B and C
  2. A, C and D
  3. Only A and B
  4. A, B and D
  5. None of these
Question 5 Multiple Choice (Single Answer)

Cytokines are involved in

  1. autocrin signalling
  2. major histocomptibality complex
  3. thyroxin
  4. oxytocin
  5. None of these
Question 6 Multiple Choice (Single Answer)

The hormones oxytocin and vasopressin are secreted from

  1. posterior pituitary gland
  2. lacrimal gland
  3. parotid gland
  4. periurethral gland
  5. None of these
Question 7 Multiple Choice (Single Answer)

Stensen duct is related to the

  1. mouth
  2. tongue
  3. duodenum
  4. lungs
  5. None of these
Question 8 Multiple Choice (Single Answer)

Choose the respective vitamin representations of the given compounds.

(a) Riboflavin
(b) Ascorbic acid
(c) Thiamine
(d) Tocopherols

  1. B2, B1, C, E
  2. B2, C, B1, E
  3. C, B1, E, B2
  4. C, E, B1, B2
  5. None of these
Question 9 Multiple Choice (Single Answer)

The inflammation of lacrimal glands is called

  1. pterygopalatine fossa
  2. dacryoadenitis
  3. lacrimal punctum
  4. infundibulum
  5. None of these
Question 10 Multiple Choice (Single Answer)

Which of the following statements is correct about silencing RNA?

  1. Expression of silencing RNA in cells is typically accomplished by delivery of plasmids or through viral or bacterial vectors.
  2. Silencing RNA functions by causing tRNA to be break after transcription.
  3. Silencing RNA interferes with the expression of specific genes with complementary nucleotide sequences.
  4. Silencing RNA promotes the target gene.
  5. None of these
Question 11 Multiple Choice (Single Answer)

__________ is the study of cellular and physiological trait variations that are not caused by changes in the DNA sequence.

  1. Epigenetics
  2. Epigenomic
  3. Cell potency
  4. Totipotency
  5. None of these
Question 12 Multiple Choice (Single Answer)

Choose the true statement for sigma factor.

  1. It works with transcription factors to increase the rate of gene transcription.
  2. Its inhibits the transcriptional activity.
  3. It complexes with RNA polymerase and encodes sequence specificity.
  4. It works with transcription factors to decrease the rate of gene transcription.
  5. None of these
Question 13 Multiple Choice (Single Answer)

Which of the following is an anti-sweetener glycoprotein compound?

  1. Aspartame
  2. Gymnemic acid
  3. Curculin
  4. Brazzein
  5. None of these
Question 14 Multiple Choice (Single Answer)

Which of the following is a multidrug resistance glycoprotein?

  1. Glycoprotein P
  2. Glycoprotein 41
  3. Envelope glycoprotein 120
  4. Envelope glycoprotein 160
  5. None of these
Question 15 Multiple Choice (Single Answer)

_________ refers to a cell that differentiates into endoderm, mesoderm or ectoderm.

  1. Totipotency
  2. Pluripotency
  3. Induced pluripoteny
  4. Multipotency
  5. None of these
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