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TLS Online TPP Program

#Question id: 1375

Four ECM ubiquitous protein components, each of which comprises multiple, distinct, repeating domains, are found in basal laminae. Given below are a list of some extracellular matrix (ECM) proteins in column A and their characteristics in column B.

Column A

Column B

a. Type IV collagen

i. a large multidomain proteoglycan that binds to and cross-links many ECM components and cell-surface molecules.

b. Laminins

ii. a rodlike molecule that cross-links type IV collagen, perlecan, and laminin, which

helps incorporate other components into the ECM and also stabilizes basal laminae.

c. Perlecan

iii. a family of multi-adhesive, cross-shaped proteins that form a fibrous two-dimensional network with type IV collagen and that also bind to integrins and other adhesion

receptors.

d. Nidogen

iv. trimeric molecules with both rodlike

and globular domains that form a two-dimensional network.

Which one of the following is the most appropriate match?

#Unit 4. Cell Communication and Cell Signaling

  1. a-ii, b-iii, c-i, d-iv

  2. a-i, b-iii, c-iv, d-ii

  3. a-iv, b-iii, c-i, d-ii

  4. a-iv, b-iii, c-ii, d-i

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TLS Online TPP Program

#Question id: 10421

#Unit 6. System Physiology – Plant

The red light-induced rotation of the D ring of the chromophore causes the hairpin to become helical, which of the following β-hairpin changes conformation after rotation?
TLS Online TPP Program

#Question id: 10422

#Unit 6. System Physiology – Plant

Arabidopsis contains five genes encoding phytochromes, PHYA–PHYE, four of the five phytochromes appear mostly light-stable in the plant and function primarily in the regulation of LFRs and of shade avoidance involving changes in the R:FR ratio.
TLS Online TPP Program

#Question id: 10423

#Unit 6. System Physiology – Plant

Which of the following responses include processes such as the promotion of lettuce seed germination, inhibition of hypocotyl elongation, and regulation of leaf movements?
TLS Online TPP Program

#Question id: 10424

#Unit 6. System Physiology – Plant

Phytochrome responses fall into three major categories based on the amount of light they require, which one is not the category of phytochrome responses;
TLS Online TPP Program

#Question id: 10425

#Unit 6. System Physiology – Plant

Very low fluence responses such as 0.0001 µmol m–2 reach a maximum at about 0.05 µmol m–2, on these fluence rate red light induce phytochrome responses. Which of the following is not the phytochrome responses on VLFR
TLS Online TPP Program

#Question id: 10426

#Unit 6. System Physiology – Plant

low-fluence responses (LFRs) another set of phytochrome responses, which include;
a) It can be initiated when fluence reaches 1.0 µmol m–2, and they are saturated at about 1000 µmol m–2
b) promotion of lettuce seed germination
c) inhibition of hypocotyl elongation and regulation of leaf movements
d) It also inhibits the growth of the mesocotyl
Which of the following combinations is correct for LFRs?