The answer is D.
Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different parts of the brain. It tells the brain and the rest of the body about the time of wake and sleep. It causes drowsiness and decreases body temperature to assist in the regulation of the sleep/wake cycle. The melatonin secretion into the blood is regulated by the endocrine system, by the hypothalamus which on gets stimulated by the light.
Pumping blood in and out of the heart.
Genotypes of the dog color are:
BB dominant homozygous-brown phenotype
bb recessive homozygous-white phenotype
Bb heterozygous-tan phenotype
Cross between brown and pan dog would be:
P: BB x Bb
F1: BB Bb BB Bb
The ratio would be 1:1 (brown dog:pan dog).
Answer:
C) a carbohydrate that takes longer to break down in the body puts less sugar into your bloodstream
Explanation:
Whole grains are a more complex carbohydrate than your basic white bread, meaning it takes longer to break down and doesn't flood your bloodstream with sugar the way white bread does when eaten. (also, the other three are not very closely related to/answer the question)
