In what ways do helminths overcome the challenges of maintaining such complicated lifecycles?
What will be an ideal response?
Helminths overcome the challenges of requiring multiple hosts to complete their lifecycle by (1 ) producing extremely large numbers of eggs, cysts, oocysts, or larvae for an extended amount of time. By not directly or quickly killing the host, the adults can (2 ) produce offspring for years in some cases. By (3 ) triggering diarrhea or anal itching, the offspring are more likely to contaminate objects or hands and have an easier time spreading to a new host. This urgency also increases the chances of the host not making it to deposit the stool in an approved location which again increases the chances for others to become contaminated. Some helminths are not confined to living inside a host and instead (4 ) spend part of their lifecycle as a free living entity until it can locate an adequate host for the next phase of its life cycle.
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A chemical reaction that has a positive ?G is correctly described as
A. endergonic. B. endothermic. C. enthalpic. D. spontaneous E. exothermic.
Which of the following is not a function of the cytoskeleton?
A) cell movement B) cell division C) moving of organelles D) positioning of enzymes E) passive transport
The state of torpor caused by lack of food or water during periods of high temperature is called:a
acclimatization. b. hibernation. c. conformation. d. estivation. e. integration
The meshwork that forms the fabric of a blood clot mostly consists of
A. thrombin. B. fibrin. C. fibrinogen. D. collagen. E. prothrombin.