Practice Questions

TLS Online TPP Program

#Question id: 12428

Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.

Why are ecologists concerned about the shift in date from May 28 in 1980 to May 15 in 2000 of the caterpillar peak mass?

#Unit 10. Ecological Principles

The caterpillars will eat much of the foliage of the trees where flycatchers nest, and their nests will be more open to predation.
The earlier hatching of caterpillars will compete with other insect larval forms on which the flycatchers also feed their young.
The flycatcher nestlings in 2000 will miss the peak mass of caterpillars and may not be as well fed.
The flycatchers will have to migrate sooner to match their brood-rearing season with the time of caterpillar peak mass.

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TLS Online TPP Program

#Question id: 12024

#Unit 7. System Physiology – Animal

Constipation can result from the consumption of a substance that ________.

TLS Online TPP Program

#Question id: 27976

#Unit 1. Molecules and their Interaction Relevant to Biology

Ubiquinone (Q) is the point of entry from 4 major entry points

b. Succinate (MM)

c. Glycerol 3-phosphate dehydrogenase (Cytosol)

d. Acyl-CoA dehydrogenase

TLS Online TPP Program

#Question id: 24211

#Unit 1. Molecules and their Interaction Relevant to Biology

Plot of hexokinase IV (Glucokinase) is different While Hexokinases I, II, and III have similar kinetic properties. So, in given graph which of the following represents hexokinase IV and Hexokinases I, II, and III

a. i is representing Hexokinases IV

b. ii is representing Hexokinases I, II, and III

c. i is representing Hexokinases I, II, and III

d. ii is representing Hexokinases IV

Choose the correct option

TLS Online TPP Program

#Question id: 15780

#Unit 5. Developmental Biology

In drosophila, the somatic cells of the hub are able to regulate stem cell proliferation by secreting the paracrine factor Unpaired onto the cells attached to them. Unpaired activates the JAK-STAT pathway in the adjacent germ stem cells to specify their self-renewal. Those cells that are distant from the paracrine factor cannot receive this signal, they begin their differentiation into the sperm cell lineage. This means hub cells act as

TLS Online TPP Program

#Question id: 33415

#Unit 1. Molecules and their Interaction Relevant to Biology

Interaction of DnaK with DnaJ