Refer to the accompanying figure. What is the function of the structure labeled as 4?
a. digestion
b. food intake
c. water discharge
d. waste elimination
e. asexual reproduction
b
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The mutation that causes the lighter skin color of all people of European descent was the result of a ____ in the gene
for a melanin transport protein.
a. base-pair substitution b. insertion c. deletion d. whole chromosome duplication e. multiple gene mutations involving several mechanisms
In image "B" individuals within the population defend distinct territories for resources, resulting in a defined distance between each. This is an example of distribution.
Three population distribution patterns are shown in this figure.
A. random
B. nonselected
C. clumped
D. forced
E. uniform
Match the numbered terms to the descriptions that follow. For each item, choose all appropriate terms, but only appropriate terms.
1. autotroph 2. heterotroph 3. phototroph 4. chemotroph an organism that obtains its energy from chemicals a) 3 only b) 1 and 4 c) 1 only d) 4 only e) 2 only
Can a virus be killed?
A. Yes, separating the genes from the capsid kills it. B. Yes, destroying its genome kills it. C. No, viruses are capable of self-assembly and cannot be permanently killed. D. No, viruses are nonliving and cannot die.