The first energy shell of an atom has one orbital. Therefore, it can contain a maximum of electron(s).

A. one
B. sixteen
C. eight
D. four
E. two


E. two

Biology & Microbiology

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Seminal vesicles secrete fructose and ____ into the semen

a. DHT b. oxytocin c. testosterone d. estrogen e. prostaglandins

Biology & Microbiology

Into which layer of the uterus does the embryo implant?

What will be an ideal response?

Biology & Microbiology

Scientists have identified approximately ________ million species of organisms, but millions more are thought to exist

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following can be said to occur during every energy transformation?

a. A change occurs in the free energy of the universe. b. The entropy of the universe increases. c. A change occurs in the total energy of the universe. d. The entropy of the universe decreases.

Biology & Microbiology