Describe the most well-developed organ system of a typical parasite
What will be an ideal response?
The reproductive system, because a well developed parasite can use its host to move, acquire food, and even digest it for the parasite, minimizing the need for and function of many of its own organs. Tapeworms are little more than bags of gametes.
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The fact that all seven of the pea plant traits studied by Mendel obeyed the principle of independent assortment most probably indicates which of the following?
A) None of the traits obeyed the law of segregation. B) The diploid number of chromosomes in the pea plants was 7. C) All of the genes controlling the traits were located on the same chromosome. D) All of the genes controlling the traits behaved as if they were on different chromosomes. E) The formation of gametes in plants occurs by mitosis only.
What is the chloroplasts' function in the cell?
a. They are the site of photosynthesis in eukaryotes. b. They absorb and use energy from sunlight. c. They synthesize high-energy carbohydrates. d. All of the above.
Memory cell production is associated with
a. the body’s first line of defense. b. the body’s second line of defense. c. the body’s third line of defense. d. complement production. e. acute inflammation.
Genome sequencing of our human ancestor, Neanderthals (Homo neanderthalensis), revealed that Neanderthals have a FOXP2 gene with the same two amino acid changes observed in H. sapiens FOXP2. What can be concluded based on this finding? (Check all that apply.)A) Neanderthals evolved from H. sapiens.B) H. sapiens evolved from Neanderthals.C) Neanderthals may have had the ability to use language.D) These two amino acid changes arose prior to the common ancestor of Neanderthals and H. sapiens.E) Verbal speech was impossible for Neanderthals.
What will be an ideal response?