When you eat a bag of cookies, your blood sugar level increases. As blood sugar levels rise, insulin levels increase to move the sugar into the cells and lower the blood sugar level. As the blood sugar level drops, so does the level of insulin
This is an example of
A) positive feedback.
B) negative feedback.
C) neurotransmitter activity.
D) paracrine communication.
E) synaptic communication.
B
You might also like to view...
In humans, skin color is controlled by several genes. Thus, skin color is a(n) ____ characteristic.
a. dominant b. co-dominant c. epistatic d. pleiotropic e. recessive
The chromosome pair listed that does NOT correlate with either male or female (under normal circumstances) is ________________.
Fill in the blank(s) with the appropriate word(s).
The cells involved in innate immunity, whose absence increases the chances of developing malignant tumors, are _____
A) cytotoxic T cells B) natural killer cells C) macrophages D) B cells
Which of the following is not a hypothesized advantage of sexual reproduction?
A. It helps remove deleterious genes. B. It reduces the chances of producing offspring less fit than the parent. C. It recombines different advantageous alleles and separates them from harmful ones. D. It creates novel combinations of genes. E. It increases resistance to parasites.