__ is the abnormal blue color of the skin caused by deoxygenated hemoglobin
A. Erythema
B. Cyanosis
C. Jaundice
D. Freckles
E. Pallor
Answer: B. Cyanosis
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All of the following are abiotic factors within an ecosystem except ________.
A. fire B. nutrients C. energy D. All of the above are abiotic factors.
Which of the following is NOT usually present during the icteric stage of viral hepatitis?
a. Hepatomegaly b. Elevated serum liver enzymes c. Esophageal varices d. Lighter-colored stools
Answer the following statements true (T) or false (F)
1.Negative feedback is the most common way that living organisms maintain homeostasis. 2.If body temperature is too high, the hypothalamus stimulates blood vessels in the skin to constrict. 3.The nervous system of a cat is more similar to the nervous system of a human than to the nervous system of a crayfish. 4.Damage to the pons would lead to problems with posture. 5.The autonomic nervous system controls voluntary muscles involved in processes such as moving legs while consciously walking.
The maximum number of electrons in a shell is
a. two. b. four. c. six. d. eight. e. ten.