Which of the following is the most likely candidate for the first eukaryotic life-forms to move onto land?
A) algae in shallow water B) trilobites
C) amphibians in shallow water D) fungi
Answer: A
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You determine the amino acid sequence of a protein and find it contains a long sequence of methionine, followed by a long sequence of proline, followed by a long sequence of valine
Using these data you predict the sequence of this protein's secondary structure will be _____. A) beta sheets, then a region of no secondary structure, then beta sheets B) alpha-helices, then a region of no secondary structure, then alpha helices C) beta sheets, then a region of no secondary structure, then alpha-helices D) alpha-helices, then a region of no secondary structure, then beta sheets
When trying to make a mammalian protein in a bacterium, expression vectors are often used. Using your knowledge of prokaryotic and eukaryotic genetics, explain why expression vectors are so important
What will be an ideal response?
With regard to DNA topology, which of the following is not a continuous deformation?
A. conformational changes due to stretching B. conformational changes due to thermal motion C. conformational changes due to interaction with proteins D. conformational changes due to interaction with molecules other than proteins E. conformational changes due to DNA strand breakage
In your garden, you have an Ailanthus altissima, also known as the Tree-of-Heaven. You try adding additional plants to the same garden bed, but notice poor seed germination and seedling growth around the tree. What is the most likely explanation for this?
A. The tree is blocking most of the available sunlight which is limiting germination and growth. B. The tree is utilizing most of the available miconutrients in the soil. C. The roots of the tree have a stronger water potential than the seedlings which is causing the seedlings to dehydrate. D. The tree has a mutalistic relationship with animals that are removing plants that are in competition for resources with the tree. E. The tree is releasing chemicals into the soil that are inhibiting germination and growth of other plants. 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 about plant interactions? How does it relate to the question? 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?