Which of the following is a characteristic of cancer cells?
A. Cells that spend 90% of their lifetime in interphase.
B. Cells undergo highly regulated cell division.
C. Cells exhibit contact inhibition.
D. Cells with abnormal nuclei.
E. Cells are able to differentiate and specialize.
Answer: D
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Four elements, including ____, make up more than 96% of the mass of most living organisms
a. sodium b. potassium c. phosphorus d. nitrogen e. calcium
Select the best response to the question. ? ?You are working in a pediatric clinic and the physician has prescribed tetracycline for a 5-year-old patient. What should your next action be?
A) Prepare the first dose so it can be administered before the patient leaves the clinic. B) Instruct the patient's mother to avoid giving the medication with dairy products, which can inhibit its absorption. C) Clarify the prescription with the physician since tetracycline can cause permanent tooth discoloration in children under 9. D) Give the patient's mother the prescription along with written instructions about the medication.
In the rheumatoid factor test, you are detecting IgM directed against IgG.
a. true b. false
Some botanists consider the stoneworts to be a link between the higher plants and the algae. As you will learn in future exercises, higher plants, such as the mosses, have both haploid and diploid stages that are multicellular.
(a) Describe the multicellular organism in the charophytes. (b) Is this organism haploid or diploid? (c) Is the zygote haploid or diploid? (d) Is the zygote unicellular or multicellular?