Which of the following is the correct sequence of events in the origin of life?

I. Formation of protocells

II. Synthesis of organic monomers

III. Synthesis of organic polymers

IV. Formation of DNA-based genetic systems

TLS Online TPP Program

#Question id: 23493

#General Aptitude

LAN stands for:

TLS Online TPP Program

#Question id: 10267

#Unit 8. Inheritance Biology

Exceptions of law of dominance are

a. Incomplete dominance

b. Codominance

c. Nondisjunction

d. Linkage

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#Question id: 24169

#General Aptitude

A fireplace should be lined with special fire bricks to prevent heat transfer.

TLS Online TPP Program

#Question id: 14740

#Unit 4. Cell Communication and Cell Signaling

Rod cells sense light with the aid of a light-sensitive GPCR known as rhodopsin; choose incorrect statements

a. Rhodopsin consists of the protein opsin, which has the usual seven–transmembrane segment GPCR structure, covalently linked to a light-absorbing pigment called retinal. 

b. Rhodopsin, found only in rod cells, is localized to the thousand or so flattened membrane disks that make up the inner segment of each of these rod-shaped cells.

c. A human rod cell contains about 4 × 10⁷ molecules of rhodopsin. 

d. The heterotrimeric G protein coupled to rhodopsin, called transducin (Gt), contains a Gα unit referred to as Gαt; like rhodopsin, Gαt is found only in rod cells.

TLS Online TPP Program

#Question id: 10224

#Unit 6. System Physiology – Plant

Exposure to high levels of excess light that damage the photosynthetic system and decrease both quantum efficiency and maximum photosynthetic rate results