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TLS Online TPP Program

#Question id: 4654

Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities?

#Unit 11. Evolution and Behavior

  1. By identifying the bones as being homologous

  2. By the principle of convergent evolution

  3. By proposing that humans, bats, and dolphins share a common ancestor

  4. A and C only

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TLS Online TPP Program

#Question id: 1027

#Unit 4. Cell Communication and Cell Signaling

Which of the following bacteria lack a cell wall?
TLS Online TPP Program

#Question id: 12072

#Unit 7. System Physiology – Animal

If the average hydrostatic pressure in the glomerular capillaries is 50 mm Hg, the hydrostatic pressure in the Bowman’s space is 12 mm Hg, the average colloid osmotic pressure in the glomerular capillaries is 30 mm Hg, and there is no protein in the glomerular ultrafiltrate, what is the net pressure driving glomerular filtration?
TLS Online TPP Program

#Question id: 5678

#Unit 5. Developmental Biology

Following process and their mechanism during fertilization in mammals.

 a. Rheotaxis

i.A sensing mechanism in which, the oocyte and its accompanying

cumulus cells secrete molecules that attract capacitated

sperm toward the egg during the last stages of sperm migration

b.  Chemotaxis

ii.It is a transient event, and sperm are given a relatively brief window of competence during which they can successfully fertilize the egg.

c.  Capacitation

iii.it is the ability to sense temperature difference and preferentially swim from cooler to warmer sites is found only in capacitated sperm.

d. Thermotaxis

iv.Sperm receive long-distance directional cues from the flow of liquid from the oviduct to the uterus and they will migrate against the direction of the flow—using CatSper calcium channels to sense calcium influx and monitor the direction of the current
     

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

#Question id: 400

#Unit 1. Molecules and their Interaction Relevant to Biology

Consider two solutions: solution X has a pH of 4; solution Y has a pH of 7. From this information, we can reasonably conclude that ________.
TLS Online TPP Program

#Question id: 26475

#Unit 3. Fundamental Processes

If the nonsense mutation in one gene of a transcription unit it leads to the premature termination of transcription the phenomenon known as