B cells:a
are produced in the adult spleen.
b. lyse bacterial cell walls by secreting digestive enzymes.
c. can become plasma cells, which produce interleukins.
d. undergo clonal selection once activated.
e. stimulate apoptosis
D
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Which of the following is not a product of fermentation?
A) lactate B) CO2 C) ethanol D) NAD+ E) sucrose
Explain the function of the association areas of the cerebral hemispheres
What will be an ideal response?
Four of the five answers below are correct statements about exoskeletons. Select the exception
a. an exoskeleton consists of noncellular secreted material. b. repeatedly producing new exoskeleton uses resources that the animal could put towards growth and reproduction. c. the exoskeleton is made of bone and cartilage. d. the exoskeleton protects the soft body tissues inside it. e. exoskeletons exist in some invertebrates.
Fungi are made of bundles of threadlike ________
A) mycelia B) hyphae C) chitins D) lichens