Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 5376
TLS Online TPP Program

#Question id: 5638

Glycoprotein coat (extracellular matrix) around the mammalian egg, synthesized and secreted by the growing oocyte, known as:

#Unit 5. Developmental Biology

  1. Cumulus

  2. Vitelline envelope

  3. Zona pellucida

  4. Corona radiata

More Questions
TLS Online TPP Program

#Question id: 13164

#Unit 4. Cell Communication and Cell Signaling

Match the following.

Column I

Column II

Column III

A. G Protein–Coupled Receptors That

Activate PDE

i. cAMP

a. Increase in conversion of glycogen to glucose

B. G Protein–Coupled Receptors That

Activate Adenylyl Cyclase

ii. cGMP

b. Hyperpolarization or depolarization of photoreceptor membrane

C. G Protein–Coupled Receptors That

inhibit Adenylyl Cyclase

iii. DAG

c. activates genes necessary for cell division

D. G Protein–Coupled Receptors

That Trigger Elevations in Cytosolic and

Mitochondrial Calcium

 

d. increase in K+ permeability hyperpolarizes the

membrane

Which one of the following is correct?
TLS Online TPP Program

#Question id: 1031

#Unit 4. Cell Communication and Cell Signaling

Phagocytosis
TLS Online TPP Program

#Question id: 4679

#Unit 3. Fundamental Processes

Activated RecA stimulates autocleavage of
TLS Online TPP Program

#Question id: 19181

#Unit 13. Methods in Biology

Which of the following statement is incorrect regarding the cloning of PCR products?
TLS Online TPP Program

#Question id: 1517

#Unit 4. Cell Communication and Cell Signaling

Following statements are regarding to cell death and its regulation.

A. In mammals, apoptosis can be triggered by oligomerization of Bax or Bak proteins in the outer mitochondrial membrane, leading to efflux of cytochrome c and SMAC/DIABLO proteins into the cytosol; these proteins then promote caspase activation and cell death.

B. Direct interactions between pro-apoptotic and anti-apoptotic proteins lead to cell death in the absence of trophic factors.

C. Direct interactions between pro-apoptotic and anti-apoptotic proteins lead to cell death in the presence of trophic factors.

D. Once activated, apoptotic proteases called caspases cleave specific intracellular substrates, leading to the demise of a cell.

Which of the following statements are correct?