Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 25607
TLS Online TPP Program

#Question id: 5560

In a newly fertilized egg, the vitelline layer ________.

#5. Developmental Biology

  1. lifts away from the egg and hardens to form a fertilization envelope

  2. secretes hormones that enhance steroidogenesis by the ovary

  3. reduces the loss of water from the egg and prevents desiccation

  4. provides most of the nutrients used by the zygote

More Questions
TLS Online TPP Program

#Question id: 1581

#4. Cell Communication and Cell Signaling

An otherwise healthy student in your class is infected with EBV, the virus that causes infectious mononucleosis. The same student had already been infected when she was a child, and she had merely experienced a mild sore throat and swollen lymph nodes in her neck. This time, though infected, she does not get sick. 

Her immune systemʹs recognition of this infection will involve which of the following?
TLS Online TPP Program

#Question id: 10369

#6. System Physiology – Plant

Which type of the nitrogen-fixing bacteria are thought to maintain a low oxygen concentration (microaerobic conditions) through their high levels of respiration
TLS Online TPP Program

#Question id: 16481

#12. Applied Biology

The evolution of continuous cell lines from primary cultures occurs due to which reason
TLS Online TPP Program

#Question id: 10544

#6. System Physiology – Plant

Fusicoccin is a nonspecific toxin from the fungus Fusicoccum amygdali function as,
TLS Online TPP Program

#Question id: 15857

#12. Applied Biology

The ability of a plant cell to perform all the functions of development is called__