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: 15117

#Unit 8. Inheritance Biology

In any population of 10000, in which 100 females were affected from x-linked recessive disorder. What will be the carrier frequency for this x-linked recessive disorder.

TLS Online TPP Program

#Question id: 11399

#Unit 9. Diversity of Life Forms

The thermoacidophile, Sulfolobus acidocaldarius lacks peptidoglycan. What is likely to be true of this species?

1. It is a bacterium.

2. It is an archaean.

3. The optimal pH of its enzymes will lie above pH 7.

4. The optimal pH of its enzymes will lie below pH 7.

5. It could inhabit certain hydrothermal springs.

6. It could inhabit alkaline hot springs.

TLS Online TPP Program

#Question id: 1308

#Unit 4. Cell Communication and Cell Signaling

What are the cytoskeletal proteins associated with hemidesmosomes?

TLS Online TPP Program

#Question id: 12567

#Unit 10. Ecological Principles

Which of the following is true about the current research about forest fragmentation?

TLS Online TPP Program

#Question id: 1459

#Unit 4. Cell Communication and Cell Signaling

Cells from advanced malignant tumors often have very abnormal chromosomes and an abnormal number of chromosomes. What might explain the association between malignant tumors and chromosomal abnormalities?