Compare and contrast DNA and RNA
What will be an ideal response?
DNA is double stranded; contains the sugar deoxyribose; possesses cytosine, guanine, adenine, and thymine; and is restricted to the nucleus. RNA is single stranded; contains a ribose sugar; possesses cytosine, guanine, adenine, and uracil (instead of thymine); and functions in protein synthesis in the cytoplasm. Both nucleic acids are composed of nucleotides and function in gene expression.
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Respiratory syncytial virus is a major cause of global respiratory infection outbreaks in infants 6 months of age or younger.
Answer the following statement true (T) or false (F)
When the population growth of the prey = 0, is the predator population increasing or decreasing?
a. It is always decreasing. b. It is always increasing. c. At the left point it is increasing and at the right point it is decreasing. d. At the right point it is decreasing and at the left point it is increasing.
Besides the ability of some cancer cells to overproliferate, what else could logically result in a tumor?
A) changes in the order of cell cycle stages B) lack of appropriate cell death C) inability to form spindles D) inability of chromosomes to meet at the metaphase plate
In seed plants, which structure contains the male gametophyte?
a) ovule b) pollen c) seed d) ovary