There are no mandatory screening programs for genetic defects such as PKU and galactosemia in
newborns Indicate whether the statement is true or false.
F
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If you were to digest this DNA with PstI, which length of DNA fragment would migrate the fastest on an agarose gel?
A 6.85 kb EcoRI fragment of DNA is shown below. The location of several restriction sites is indicated. Scale is approximate.
A. 803
B. 2622
C. 3425
D. 235
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about restriction enzymes?
Consider Possibilities
· What other information is related to the question? Which information is most useful?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The fossil record shows life originated on Earth at least 3.5 billion years ago and was comprised entirely of microorganisms. What sort(s) of fossils have been discovered by paleontologists provide the strongest evidence of this conclusion?
A. bacterial microfossils B. stromatolites C. isotopic analysis of carbon in sedimentary rocks (derivatives of biomolecules from once living organisms) D. fossil fuels (crude oil, coal)
Briefly explain the iron-sulfur world hypothesis and identify two pieces of evidence that support this hypothesis. What will be an ideal response?
The organelle that pinches off portions of its membrane to form a vesicle used for storage or transport is the ____
a. mitochondrion
b. chloroplast
c. nucleus
d. Golgi body
e. ribosome