Cell Biology and Structure

This option is correct. In humans, F-spondin is secreted by the cells of floor plate.

This option is correct. Glycophorin C plays an important role in maintaining erythrocyte shape and regulating membrane material properties.

Water is the primary component of all living cells, typically accounting for 70% to 90% of their total mass. It serves as a universal solvent for biochemical reactions and provides structural turgidity to the cell.

Guard cells contain chloroplasts to manufacture the food by photosynthesis, but epidermal cells lack chloroplasts.

Pluripotency is the ability of a cell to differentiate into many different cell types that make up the body, but not the extra-embryonic tissues. Totipotency is the ability to differentiate into all possible cell types, including the placenta.

A polyribosome, or polysome, consists of a cluster of ribosomes held together by a strand of messenger RNA (mRNA). This structure allows for the simultaneous translation of a single mRNA molecule into multiple copies of a protein.

Tissues which take up stains are called chromatic. Chromosomes were so named because of their ability to absorb a violet stain.

Mitochondria is called the power house of  cell. As photosynthesis takes place in chloroplasts, it needs proteins for initiating the reaction. So, photo respiration takes the aid of mitochondria, chloroplasts and peroxysomes.

Yes, it is correct. In rose plant,  this growth by cell division occurs continuously throughout its life span.

Yes, it is correct. Growth in non-living things happens because of accumulation of matter from outside, like in clouds.

Mitocondria are known as the powerhouses of the cell because they generate most of the cell's supply of adenosine triphosphate (ATP). This ATP is used as a source of chemical energy for various cellular processes. Ribosomes are involved in protein synthesis, and the liver is an organ.

It is a characteristic of benign tumor.

It is a cancerous growth of melanocytes.

Wall of tunica interna is made of endothelial cells.

This is the correct option. Deoxyribonucleic acid or DNA has specific genetic information and controls every feature of the body such as colour, looks, etc.