An organ consists of two or more:
a. cells
b. cell types
c. tissues
d. functional structures
e. fluid types
c
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Anti-A and anti-B antibodies are natural antibodies and are present at birth
Indicate whether this statement is true or false.
Which of the following is not an effect of deforestation?
1.destruction of forest organisms 2.higher risk of flooding 3.higher risk of landslides 4.increased productivity
Match the type of work with an example of that type of work
A) nerve impulse conduction B) accumulation of substances in a cell C) carbon fixation D) muscle contraction E) maintaining body temperature F) glowing fungi 1) synthetic work 2) mechanical work 3) concentration work 4) electrical work 5) heat 6) bioluminescence
The noncoding regions of mammalian mitochondrial genomes have few to no repair mechanisms, but no real selective pressure. Which of the following are consequences of this condition?
A) a rate of mutation that is much higher than that of nuclear sequences B) a high rate of loss of mitochondrial genomes relative to nuclear sequences C) a high rate of natural selection for genomes identical to those of the mother D) a lower rate of mutations that remain in maternal lineages over evolutionary time E) a rate of mutation that can increase with successive generations in a maternal line