Which of the following is the correct sequence of events during pre-embryonic development?
A) morula ? zygote ? implantation ? blastocyst
B) implantation ? zygote ? morula ? blastocyst
C) zygote ? morula ? blastocyst ? implantation
D) zygote ? blastocyst ? morula ? implantation
C
Biology & Microbiology
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The most effective form of penicillin is
A. A. B. B. C. E. D. G.
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What is the role of the hormone, gastrin, in the stomach?
What will be an ideal response?
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A nerve cell returns to the resting potential as ______ ions leave the cell
a. sodium b. potassium c. calcium d. chloride e. ammonium
Biology & Microbiology
_____ refers to the process by which microbes gain a more stable foothold at the portal of entry though interaction of their molecules with host cell receptors.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology