TLS Online TPP Program

#Question id: 102


 The structure of a disaccharide is shown below. Which statement is correct about following structure?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Both rings A and B are in equilibrium with an open chain form.

  2. Only ring A is in equilibrium with an open chain form.

  3. Only ring B is in equilibrium with an open chain form.

  4. Neither ring is in equilibrium with an open chain form.

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TLS Online TPP Program

#Question id: 1118

#Unit 4. Cell Communication and Cell Signaling

What are scaffolding proteins?

TLS Online TPP Program

#Question id: 3373

#Unit 11. Evolution and Behavior

Which of the following is correct statement?

A. Reproduction alone does not alter allelic or genotypic frequencies from generation to generation

B. Frequency of the heterozygote is always greatest when allelic frequencies are range between .33 and .66

C. Inbreeding is more likely to take place in nature when population size becomes very small and the number of mates is limited.

D. The movement of a few individuals between populations can counteract the effects of genetic drift

TLS Online TPP Program

#Question id: 248

#Unit 1. Molecules and their Interaction Relevant to Biology

The abbreviation pppT indicates

TLS Online TPP Program

#Question id: 21002

#Unit 12. Applied Biology

Oil spills cause severe damage to the ecosystems and pose threats of 
(1) Fire
(2) Ground water pollution due to percolation
(3) Air pollution due to evaporation
Which of the above statements are true?

TLS Online TPP Program

#Question id: 34167

#Unit 7. System Physiology – Animal

I. The adrenal medulla does not regenerate, but when the inner two zones of the cortex are removed, a new ZF and ZR regenerate from glomerular cells attached to the capsule.
II. Immediately after hypophysectomy, the ZF and ZR begin to atrophy, whereas the ZG is unchanged because of the action of angiotensin II on this zone. 
III. The ability to secrete aldosterone and conserve Na+ is normal for some time after hypophysectomy, but in longstanding hypopituitarism, aldosterone deficiency may develop, apparently because of the absence of a pituitary factor that maintains the responsiveness of the zona glomerulosa.