Cell cleavage during embryonic development in ducks is
A. meroblastic.
B. holoblastic.
C. complete.
D. through the entire egg.
E. impossible.
A. meroblastic.
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Which of the following pairs is incorrectly matched for cells and the molecules they secrete?
A. Neutrophils; heparin B. Basophils; heparin C. Mast cells; histamine D. Natural killer cells; toxic chemicals E. Eosinophils; toxic chemicals
Which of the following is the least successful
method of birth control? a. early withdrawal b. a condom alone c. a spermicidal jelly or foam alone d. douching e. the Pill
A short period early in a disease that may manifest with general malaise and achiness is the _______
a. Period of incubation b. Prodrome c. Sequelae d. Period of invasion
Using the formula determine the original cell density in the sample: OCD = Number of CFU/Amount plated x dilution factor . You counted 235 colonies on a plate in your dilution series. The plate was inoculated with 0.1ml from a 10^-7 test tube, what is the OCD?
What will be an ideal response?