Some members of the Domain Bacteria have
a. a nucleus.
b. membrane-bound organelles.
c. chloroplasts.
d. photosynthetic ability.
d
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Which of the following parasites is the major parasitic cause of deaths worldwide, yet its transmission could be prevented by access to clean water?
A. Cryptosporidium parvum B. Giardia intestinalis C. Cyclospora cayetanensis D. Entamoeba histolytica
In which layer of a leaf does photosynthesis occur?
a. Stomata b. Thykaloid membrane c. The mesophyll d. Chloroplasts
Polyploidy
a. can occur naturally. b. occurs when there are more than two sets of chromosomes. c. means more than two complete chromosome sets d. is responsible for some of our major foods. e. is all of these.
Which of the following statements regarding Neisseria meningitidis is FALSE?
A) There are vaccines available to prevent infection with all strains. B) Up to 40% of the population are carriers. C) Humans are the only natural carriers. D) Transmission is via respiratory droplets. E) It often causes meningitis.