What are the adaptations plants have to adapt to life on land?
What will be an ideal response?
Cuticles to help prevent water loss; roots to take up water and minerals from the soil; vascular tissues to transport materials in the plant more easily; pollen to allow sperm to reach the egg without having to swim through free water; lignin which provides structural support to the plant so it can stand upright without being supported by water, and stomata to allow for exchange of gases between the air and the inside of the plant.
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DNA primase
A. creates a short RNA primer that is complementary to an RNA template. B. creates a short DNA primer that is complementary to an RNA template. C. creates a short DNA primer that is complementary to a DNA template. D. creates a short DNA template that is complementary to an RNA primer. E. creates a short RNA primer that is complementary to a DNA template.
Which of the following are commonly used to study phylogeny?
A. Whole genomes because they are easy to obtain. B. Segments of membrane proteins because the proteins are encoded by DNA. C. Specific mRNA chloroplast sequences because they are found in the genomes of all living organisms. D. Small ribosomal subunit (SSU) RNA because it is found in the genomes of all living organisms. E. None of these answers are correct.
Refer to Figure 40-4. Which of the following represent the correct sequence for contraction to occur in
this muscle cell? a. nerve stimulus, 4, 5, 3, 2, contraction b. nerve stimulus, 4, 5, 2, 3, contraction c. nerve stimulus, 4, 3, 5, 2, contraction d. nerve stimulus, 5, 3, 2, 1, contraction e. nerve stimulus, 5, 2, 3, 1, contraction
Is it possible for a man to be sterile and still produce semen? Explain
What will be an ideal response?