Practice Questions

TLS Online TPP Program

#Question id: 648

Enzyme catalysis is regulated by a number of mechanisms. Also, the flux through metabolic pathways must be regulated. Given the metabolic pathway below, which choice accurately describes the regulation of compound G levels?

#Unit 1. Molecules and their Interaction Relevant to Biology

G is regulated by chemical modification of the enzyme that catalyzes step 3.
G serves as an inhibitory effector of the allosteric enzyme that catalyzes step 3.
G inhibits the expression of the enzyme that catalyzes the formation of D.
The reversible reaction of B to D is converted to an irreversible reaction.

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TLS Online TPP Program

#Question id: 24271

#Unit 4. Cell Communication and Cell Signaling

Integrins are involved in following processes, except:

a. Extravasation

b. Cell-to-cell adhesion

c. Cell migration

d. Receptors for certain viruses

e. Angiogenesis

TLS Online TPP Program

#Question id: 24661

#Unit 2. Cellular Organization

Indicate whether the following compounds are likely to cross a membrane by nonmediated or mediated transport: (a) ethanol, (b) glycine, (c) cholesterol, (d) ATP.

TLS Online TPP Program

#Question id: 27573

#Unit 1. Molecules and their Interaction Relevant to Biology

Interaction type, Distance dependence of potential energy, and Typical energy (kJ mol-1) are given

Match them correctly

TLS Online TPP Program

#Question id: 18894

#Unit 13. Methods in Biology

Which of the following is used in electron microscope?

TLS Online TPP Program

#Question id: 26814

#Unit 8. Inheritance Biology

Phenotypic variation is analyzed for milk production in a herd of dairy cattle and the following variance components are obtained: Additive genetic variance= 0.4, Dominance genetic variance= 0.1, Genic interaction variance= 0.2, Environmental variance= 0.5, Genetic−environmental interaction variance= 0.0, the heritability (H2) of milk production is___