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TLS Online TPP Program

#Question id: 2205

Amino acid entry into cells can occur via uniporters or symporters. If the rate of leucine entry into the cell increases when the pH decreases, this suggests:

#Unit 2. Cellular Organization

  1. leucine is being transported by a uniporter.

  2. leucine is being actively pumped across the membrane against its concentration gradient.

  3. leucine is being transported by a H+ symporter.

  4. leucine is crossing the membrane via simple diffusion.

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TLS Online TPP Program

#Question id: 2172

#Unit 2. Cellular Organization

The osmotic potential of a hypotonic solution should cause an animal cell to _____, but with frog oocytes prevent this effect by _____.
TLS Online TPP Program

#Question id: 32396

#Unit 1. Molecules and their Interaction Relevant to Biology

Succinate thiokinase is involved in
A. Substrate-level phosphorylation
B. GTP in mammals
C. NADH formation
TLS Online TPP Program

#Question id: 10910

#Unit 6. System Physiology – Plant

In early research on phloem translocation, both active and passive mechanisms were considered. All theories, both active and passive, assume an energy requirement in both sources and sinks. What will be the INCORRECT explanation of active and passive mechanism?
TLS Online TPP Program

#Question id: 5633

#Unit 5. Developmental Biology

During slow block to polyspermy, the components of the cortical granules bind to the _______ to form a fertilization envelope.
TLS Online TPP Program

#Question id: 2483

#Unit 2. Cellular Organization

MAP2 and Tau are examples of microtubule: