An organ is defined as
a. a single tissue grouped together to perform a
specific function.
b. 2 or more tissues in specific proportions grouped
together to perform a specific function.
c. cells of different tissues linked together by the
circulatory system to allow multiple functions.
d. only the reproductive parts in plants.
e. none of these.
Answer: b
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The primary function of humoral immunity (humoral response) is to _____
A) defend against fungi and protozoa B) reject transplanted tissues C) protect the body against cells that become cancerous D) protect the body against extracellular pathogens E) defend against bacteria and viruses that have already infected cells
Which of the following is true regarding any given modal action pattern?
a. usually found in many species b. involves species-specific responses c. cannot be elicited by a stimulus found in the organism's usual environment d. involves movement towards or away from a stimulus
The DNA Pol III enzyme can use mRNA to make a cDNA strand
Indicate whether the statement is true or false
The two most abundant ions in plasma are ____
a. HCO3? and Ca2+ b. HCO3? and Cl? c. Na+ and Ca2+ d. Na+ and Cl?
e. Na+ and K+