90% of the atmosphere is the result of photosynthesis.
The statement which is false about the intergumentary system is option D. "Keratin is the pigment responsible for skin color."
Even though the skin color of human beings is affected y different substances, the pigment melanin is responsible for it. Melanin is produced within the skin in cells known as melanocytes and it determines of the skin color of darker-skinned humans.
For instance, the skin color of those who have light skin is determined primary by the bluish-white connective tissue placed beneath the dermis and by the hemoglobin which circulates in the veins of the dermis.
Applying logarithm to the x axis of the dose response curve is a math trick that will linearize the middle zone of the curve and will allow you to visualize better the EC50 of the drug. Also the numbers on the x axis are easier to write since they are larger when you apply the logarithm to the concentrations.
Hypothalamus: a region of the forebrain below the thalamus which coordinates both the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems, and involved in sleep and emotional activity.
Insulin: a hormone produced in the pancreas by the islets of Langerhans, which regulates the amount of glucose in the blood. The lack of insulin causes a form of diabetes.
Predisposed: make someone liable or inclined to a specified attitude, action, or condition.
The answer is endocrine system. It is a collection of glands producing hormones that woulf regulate tissue function, growth development and regulate metabolism. The hormones would then be carried out to the circulatory system.Hope this answer would be of help.
