Home › Quizzes › Membrane Proteins and Protein Families in Biochemistry

Membrane Proteins and Protein Families in Biochemistry

Practice test covering membrane proteins, protein families, transporters, and their cellular functions in biochemistry and molecular biology

15 Questions Published
Play Quiz Practise this topic out loud

Questions

Question 1 Multiple Choice (Single Answer)

Which of the following proteins found in the saliva is an antimicrobial and antifungal protein that plays an important role in wound-closure?

  1. Golgi phosphoprotein 3
  2. GoLoco motif
  3. Histatin
  4. Hook protein
  5. Hsp20
Question 2 Multiple Choice (Single Answer)

Which of the following is a protein that occurs in the cell membranes of some single-celled prokaryotes?

  1. Alpha secretase
  2. Amino acid permease
  3. Archaeosortase
  4. Sheddase
  5. LRRC24
Question 3 Multiple Choice (Single Answer)

Which of the following statements is/are correct?

  1. LrgA and CidA are homologous holin and anti-holin proteins, respectively.
  2. CidA/LrgA holin family includes putative murine hydrolase exporters from a wide range of algae.
  3. CidA/LrgA holin regulates and influences biofilm formation by releasing DNA from lysed cells.
  1. Only 1
  2. Only 2
  3. Only 3
  4. Only 1 and 2
  5. Only 2 and 3
Question 4 Multiple Choice (Single Answer)

Which of the following is the homo-oligomeric integral membrane protein in the endoplasmic reticulum that concentrates at junctions with cytoplasmic lipid droplets?

  1. Seipin
  2. Nucleoporin 210kDa
  3. WH2 domain
  4. Folate-binding protein
  5. PDZ domain
Question 5 Multiple Choice (Single Answer)

Which of the following proteins promotes the formation of transport vesicles from the endoplasmic reticulum in the yeast?

  1. SEC31
  2. Hsp20
  3. TMPad
  4. GAP
  5. Snf3
Question 6 Multiple Choice (Single Answer)

Which of the following is a membrane attack complex protein with both lytic and non-lytic roles and functions in immunity, invasion and development?

  1. MACPF
  2. Malonate:Sodium symporter
  3. MBOAT
  4. Membrane fusion protein
  5. Stomatin
Question 7 Multiple Choice (Single Answer)

Assertion: Snf3 is able to bind even high amounts of glucose.
Reason: Snf3 is a plasma membrane protein in yeast that consists of 3 transmembrane domains.

  1. A and R both are correct and R is the correct explanation of A.
  2. A and R both are correct and R is not the correct explanation of A.
  3. A is correct and R is incorrect.
  4. A is incorrect and R is correct.
  5. A and R both are incorrect.
Question 8 Multiple Choice (Single Answer)

Which of the following is a member of a family of proteins that creates gap junctions in invertebrates?

  1. Golgi Phosphoprotein-3
  2. Hsp20
  3. Rabaptin
  4. Innexin
  5. Hydroxy Aromatic Amino Acid Permease
Question 9 Multiple Choice (Single Answer)

Which of the following statements is/are correct about human erythrocyte integral membrane protein band 7?

P. It localises to the cell membrane of white blood cells and other cell types and regulates ion channels and transporters.
Q. In humans, this protein is encoded by the STOM gene.
R. It is present in membrane-protruding folds and extensions.

  1. Only P
  2. Only Q
  3. Only R
  4. Only P and Q
  5. Only Q and R
Question 10 Multiple Choice (Single Answer)

Match the proteins in column – I with their functions in column – II.

 
Column – I Column – II
P. Cyclic AMP receptor 1. Regulates the expression of a large number of developmentally-regulated genes
Q. CD59 antigen 2. Allows the sperm to pass through the envelope and fuse with ova
R. Egg lysin 3. Inhibits formation of membrane attack complex
S. Exosortase 4. Recognises and cleaves the carboxyl-terminal sorting signal PEP-CTERM
  1. P - 1; Q - 2; R - 3; S - 4
  2. P - 1; Q - 3; R - 2; S - 4
  3. P - 2; Q - 4; R - 3; S - 1
  4. P - 2; Q - 3; R - 4; S - 1
  5. P - 4; Q - 3; R - 2; S - 1
Question 11 Multiple Choice (Single Answer)

Which of the following proteins is/are related to vesicle traffic?

  1. SAND protein
  2. Uncoupling protein
  3. Folate-binding protein
  1. Only 1
  2. Only 2
  3. Only 3
  4. Only 1 and 2
  5. Only 2 and 3
Question 12 Multiple Choice (Single Answer)

Which of the following protein families consists of small proteins having 50 to 65 amino acyl residues and exhibits a single N-terminal transmembrane domain?

  1. Tellurium ion resistance family
  2. Vibrio holin family
  3. NP-holin family
  4. EPPE-holin family
  5. P68 holin family
Question 13 Multiple Choice (Single Answer)

Which of the following is a repository of helix-helix interactions in membrane proteins?

  1. TMPad
  2. Uncoupling protein
  3. T4 holin
  4. Stomatin
  5. Cation diffusion facilitator
Question 14 Multiple Choice (Single Answer)

Match the following.

 
Column - I Column - II
A. NhaA family 1. Belongs to the ion transporter superfamily
B. NhaB family 2. Consists of a single protein of 64 amino acyl residues in length with 2 transmembrane segments
C. XanPHol family 3. Contains a number of bacterial sodium-proton antiporter proteins
  1. A - 1, B - 2, C - 3
  2. A - 3, B - 1, C - 2
  3. A - 2, B - 3, C - 1
  4. A - 2, B - 1, C - 3
  5. A - 3, B - 2, C - 1
Question 15 Multiple Choice (Single Answer)

Which of the following is the integral membrane protein that is found on the surface of many cell types in vertebrate animals?

  1. Histatin
  2. SacI homology domain
  3. Sortase
  4. Rabaptin
  5. CD36
← Back to Quizzes