Answer:
Insulin is a protein hormone which binds to the membrane receptor where as steroid hormones bind to the intracellular receptors.
Explanation:
Hormones can be divided into two groups based on their binding with receptor. Some hormones are water soluble like protein or peptide hormone (example is insulin) and catecholamines. These water soluble hormones cannot cross the plasma membrane of the target cell and thus bind to the membrane receptor. Binding to the membrane receptor leads to activation of intracellular enzymes which bring the physiological change. Steroid hormones in the other case can cross the plasma membrane and then bind to the intracellular receptors. The hormone receptor complex then either binds or activates specific portion of DNA to bring the physiological change.
Insulin is made by beta cells islets of Langerhans in the pancreas. It controls the levels of glucose. It is a small protein made of two polypeptides, one of 21 amino acids and the other of 30 amino acids. These two are called A chain and B chain and are linked together by disulphide bonds. The pro-hormone contains an extra stretch called C-peptide. During the maturation process the proinsulin looses the c-peptide to become mature insulin protein hormone. An american company called Eli Lilly, for the first time made recombinant human insulin.
The answer is true.
Transitional epithelium of the urinary bladder (urothelium) is a type of stratified (multilayered) epithelium. Layers of epithelial cells in this tissue can contract and expand in order to adapt to the degree of distension needed.
Layer of basal cells (basal layer) consists of cuboidal or columnar cells. Superficial layer, on the other hand, can vary depending on the degree of distension: so, when the bladder is not stretched, the cells are cuboid, but when the bladder is filled with urine, stretched, the cells are squamous.
Answer:
Collagen fibers in the dermis decrease in number and Sweat gland activity increases
Explanation:
Aging is an inevitable phenomenon in humans. Aging has significant affects on the human skins.
The skin is loosened and a lot of wrinkles can be seen on the face and other body parts. This occur's mainly because of two reasons that are Collagen fibers in the dermis decrease in number and Sweat gland activity increases
Answer:
5. BAD 6.A D the conditions for a plant to grow is warm moist wether
Answer:
options B, E and F
Explanation:
A damage to the medulla oblongata is usually fatal and can also lead to death because it controls vital autonomic functions in the body which includes breathing and heart rate.
The Broca's area is associated with language production and damage to this area can lead to inability to express language (Broca’s aphasia).
A blow to the back of the head might affect the occipital lobe that is associated with visual co-ordinations. Thus damage to this area might not affect the gustatory cortex as this is found in the region of the frontal lobe and not the occipital lobe.
The primary motor cerebral cortex on the left side of the brain controls movement of the right side of the body, and vice-versa, the right motor cortex controls movement of the left side of the body.
