Biology Questions

ACTH means Adrenal Corticotrophic Hormone.

CRH - Corticotrophin Releasing Hormone produced by hypothalamus stimulates the pituitary gland to release the ACTH which in turn produces corticosteroid hormones by adrenal glands.

Hence, the given statement is TRUE.

Plants grow in size both in height and in grith. Enlargement  of cells already present cannot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.

Every ecosystem must have Autotrophs.

tRNA abbreviated as A transfer RNA is an adaptor molecule composed of RNA, typically 76 to 90 nucleotides in length, that serves as the physical link between the mRNA and the amino acid sequence of proteins.

The marrow cavity is also known as the medullary cavity. It is the central cavity of bone shafts where adipose tissue is stored. It is lined with a thin, vascular membrane called endosteum.

There are nearly about 75000 enzymes of 3 classes are there in the human body. They are :

1. Metabolic Enzymes - Enzymes that help to run our Bodies

2. Digestive Enzymes - Enzymes that help in digesting Food

3. Food Enzymes - Enzymes from raw foods that start our Food digestion.

RNA - ribonucleic acid is a type of nucleic acid. The sugar contained in it is called Ribose.