Which component of the compound microscope aids in the collecting and focussing of light rays on the material to be examined?

TLS Online TPP Program

#Question id: 704

#Unit 1. Molecules and their Interaction Relevant to Biology

The structural classification of proteins (based on motifs) is based primarily on their:

TLS Online TPP Program

#Question id: 7274

#Unit 5. Developmental Biology

The following experiment is designed to study the role of several hormones in the regulation of metamorphosis in frogs.

Group #	Treatment	Days to Metamorphosis
1	Saline	30
2	Prolactin	> 100
3	TSH	15
4	Thyroxine	10
5	Corticosterone	30
6	Thyroxine + Corticosterone	5
7	Prolactin + TSH	30
8	Thyroid gland removed	> 100

 If the thyroid gland were removed from the tadpoles in Group 3, metamorphosis would

TLS Online TPP Program

#Question id: 31036

#Unit 4. Cell Communication and Cell Signaling

In the resting, unstimulated (no ligand bound) state, the intrinsic kinase activity of an RTK is very low because:

Activation loop is not phosphorylated

Activation loop is phosphorylated

Phosphorylated loop prevents binding of substrate

Unphosphorylated loop prevents binding of substrate

Which of the following combination is incorrect?

TLS Online TPP Program

#Question id: 26865

#Unit 10. Ecological Principles

Production efficiencies is greater in

TLS Online TPP Program

#Question id: 2928

#Unit 2. Cellular Organization

Which of the following S. pombe mutants is(are) larger than normal?