Is a mutation more likely to be lethal if it impacts early or late stages in development? Explain your answer
What will be an ideal response?
be lethal.
Events in early stages of development have impacts on large portions of anatomy and stages
of development, thus a small mutation could have a very major impact. On the other hand,
later-acting mutations are more apt to impact a small aspect of the fetus and therefore are less
likely to be lethal.
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Polonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128 neutrons. When 210Po decays, it emits an alpha particle, which is a helium nucleus (2 protons and 2 neutrons). 210Po decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. They can be stopped by, for example, a sheet of paper or a few
inches of air. That is one reason that authorities failed to discover toxic amounts of 210Po in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006 . What element does an atom of 210Po change into after it emits an alpha particle? What will be an ideal response?
Recall that your text states the following energy analogies:
a. ATP is compared to a few coins in your pocket. b. Creatine phosphate is compared to a handful of dollars. c. The glycolytic system is like an account in the bank. d. The oxidative energy system is compared to stocks and bonds.In your own words explain why each is a valid comparison.
The taxonomic subdivisions from largest to smallest are
A. kingdom, phylum, class, order, family, genus, species. B. kingdom, class, phylum, order, genus, family, species. C. kingdom, phylum, order, class, family, genus, species. D. kingdom, order, class, phylum, genus, family, species.
Which of the following is considered to be a differential staining procedure?
A. Both Gram stain and Acid-fast stain B. Gram stain C. Acid-fast stain D. Leifson's flagella stain