Answer the following statements true (T) or false (F)
1.BMI stands for body mass index.
2.The solid waste that leaves the digestive tract of a vertebrate is called chyme.
3.The process by which a cell engulfs particulate matter is phagocytosis.
4.In herbivores, the cecum is small because the food they ingest is easily digested.
5.Symbiotic bacteria in the large intestine help prevent infection by pathogenic bacteria.
1.TRUE
2.FALSE
3.TRUE
4.FALSE
5.TRUE
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Living or dead organisms that occupy an organism's habitat are called biotic factors.
Answer the following statement true (T) or false (F)
The out-of-Africa model states that Homo sapiens arose from a single population in Africa about
____________________ years ago. Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT an adaptation of Burchell's zebras to their environment?
a. camouflage b. a unique stomach c. behavioral activities d. stripes e. asexual reproduction
Which statement is NOT generally characteristic of parasites?
A. They are specialists and usually are able to affect only one variety of hosts. B. They inflict serious injury and kill their hosts immediately. C. Their presence can weaken a host and make it more vulnerable to predation. D. Their presence can reduce reproductive fitness. E. Plants as well as animals can be parasites.