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TLS Online TPP Program

#Question id: 14960

How might the ability of pea plants to self fertilize be a problem for genetic experiments?

#Unit 8. Inheritance Biology
  1. Self fertile plants tend to be weaker and require more care.
  2. Self fertile plants are not able to produce viable seeds due to inbreeding.
  3. Stamens must be removed from self fertile plants to control fertilization 
  4. Pistils of self fertile plants are unable to accept pollen from other plants.
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TLS Online TPP Program

#Question id: 1362

#Unit 4. Cell Communication and Cell Signaling

That cancer cells often lack the gap junctions common to non-malignant cells of the same type is evidence that
TLS Online TPP Program

#Question id: 34165

#Unit 7. System Physiology – Animal

Following statements are regarding thyroid hormone biosynthesis?
I. The basolateral membranes of thyrocytes facing the capillaries contain a antiporter that transports two Na+ ions and one I– ion into the cell with each cycle, against the electrochemical gradient for I–.
II. Na+/I– symporter (NIS) is capable of producing intracellular I– concentrations that are 20–40 times as great as the concentration in plasma.
III. TSH induces both NIS expression and the retention of NIS in the basolateral membrane, where it can mediate sustained iodide uptake.
TLS Online TPP Program

#Question id: 23240

#Unit 2. Cellular Organization

Mycoplasma’s plasma membrane contains ________ which protect them from lysis.
TLS Online TPP Program

#Question id: 27126

#Unit 4. Cell Communication and Cell Signaling

Dye injected into a plant cell might be able to enter an adjacent cell through a:
TLS Online TPP Program

#Question id: 2484

#Unit 2. Cellular Organization

The EB1 protein has several functions.  Which of the following is/are true regarding EB1?