Which two factors determine the virulence of a particular pathogen?
a. its ability to cause damage to the host tissues
b. the degree of immune system involvement in the infection
c. the overall health of the infected person
d. the number in the inoculating dose
e. its ability to establish itself in the host
a. its ability to cause damage to the host tissues
e. its ability to establish itself in the host
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What type of microscope would you use to visualize the internal structures of a chloroplast?
Support your conclusion with evidence based on the size of the structures you want to see and the resolution and magnification power of different types of microscopes. What will be an ideal response?
Mitosis comes from the Greek word "mitos,"
which means a. divide. b. grow. c. swell. d. thread. e. shrink.
Identify two different types of mating systems and list the advantages and disadvantages of each. What will be an ideal response?
We have all heard that dietary fats are linked to higher incidences of heart disease and cancer in humans. Choose the proper hypothesis that a scientist can test.
A. Fat levels above 30% of calories in the diet are correlated with an increase in heart disease. B. Dietary fat, heart disease, and cancer are all somehow interrelated. C. Eating a diet of lard makes you fat. D. Eating more meat causes cancer.