Answer:
Explanation:
The glucose used by the neurons for ATP production comes from:
a) Nutrients absorbed from digestion and glucose produced by the liver.
b)The breakdown of fat in adipose tissue and glycogen in muscle tissue.
c)Only Nutrients absorbed from digestion.
d)Only gluconeogenesis in the liver.
What can receptors detect?
a)Loss of homeostasis
b)Loss of homeostasis and a return to homeostasis.
c) A return to homeostasis.
d)Need for medical attention.
Which of the following is not a role of the skeletal system in maintenance of homeostasis?
a) Calcium Storage
b) Protection
c) Support
d) Phosphorous storage
What controls blood pressure in your body?
a) The hypothalamus
b) pituitary gland.
c) medulla oblongata
d) all of the above
What increases blood pressure?
a) Decreased heart rate.
b) Decreased blood vessel resistance
c) Increased blood volume
d) all of the above
What ends a hormonal response to increase blood pressure?
a) Low blood pressure
b) High blood pressure
c) A return to homeostasis.
d) Low blood pressure and a return to homeostasis
Ans.
Sickle-cell disorder is a genetic disorder, which shows defected red blood cells, due to mutation in the genes for hemoglobin protein.
Malaria is common in sub-Saharan Africa region and there, natural selection favored gene for sickle cells, because it might be beneficial to people having sickle cell disease that makes them able to survive in such condition and transmit their genes to offspring.
On the other hand, in those Africans, who moved to United States, where malaria is uncommon or absent, natural selection favored normal, wild type genes, resulting in fewer people with defected sickle cell.
Hence, sub-Saharan African population shows higher percentage of mutated gene for sickle cell as compared to population of United States.
Thus, the evolutionary process behind this difference is 'natural selection.'
The cerebral cortex, the largest part of the brain, is the wrinkly gray outer covering of the cerebrum.
Hope it helps!
Yes they do just like we do
