The subatomic particles that surround the nucleus are the ________.
A. electrons
B. neutrons
C. protons and neutrons
D. protons and electrons
E. protons
Answer: A
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What is the correct progression of steps for a direct-sequencing experiment?
A) Lyse cells, purify DNA, amplify genes by PCR, and insert genes into plasmid. B) Lyse cells, insert genes into plasmid, purify DNA, and amplify genes by PCR. C) Lyse cells, insert genes into plasmid, amplify genes by PCR, and purify DNA. D) Purify DNA, amplify genes by PCR, lyse cells, and insert genes into plasmid.
True or False: A biological clock is a set of molecular mechanisms that cycles on its own and thus keeps a regular rhythm
A. true B. false
The coelom forms in two different ways. Which of the following statements best compares those ways?
A. In schizocoelous development a solid mass of mesoderm splits to form the coelom whereas in enterocoelous development a layer of mesoderm cells forms a pocket off of the developing gut to form the coelom. B. In enterocoelous development a solid mass of mesoderm splits to form the coelom whereas in schizocoelous development a layer of mesoderm cells forms a pocket off of the developing gut to form the coelom. C. In enterocoelous development the coelom forms inside the mesoderm whereas in schizocoelous development the coelom forms on the outside of the mesoderm. D. In schizocoelous development the coelom forms within the mesoderm whereas in enterocoelous development, no coelom is formed at all. E. Schizocoelous and enterocoelous both form the coelom in identical ways, the difference merely being that the term schizocoelous is used only for deuterostomes and enterocoelous is used only for protostomes.
The nuclear genetic code is considered universal with a few exceptions. Some of these exceptions are found when comparing the nuclear genetic code of humans to what?
A) acterial genetic code B) human mitochondrial genetic code C) angiosperm's genetic code D) phage M2 genetic code E) chimpanzee's genetic code