Which of the following is a function of the circulatory system?
A) transporting nerve impulses throughout the body
B) governing nutrient concentration in the blood
C) transporting nutrients to body cells
D) mounting a response to invading microorganisms
Answer: C
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You are excited because your lab is studying the first microorganisms retrieved from Mars! Interestingly, their genetic material consists of a single-stranded nucleic acid with six different nitrogenous bases. Like organisms from Earth, segments of the nucleic acid contain the code for making proteins. If the genetic code in these organisms was read in groups of 2 bases instead of 3, what is the maximum number of amino acids that could be coded for assuming that only one codon functioned as a stop codon? (Enter your answer as a numeral not a word, e.g. enter 17 not seventeen.)
What will be an ideal response? 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 the genetic code? 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?
Which of the following statements about homologous chromosomes is false?
1.One member of a homologous pair is inherited from the mother and the other is inherited from the father. 2.Homologues have identical gene loci but may carry differing alleles. 3.Sister chromatids separate in Meiosis I and homologous chromosomes separate in Meiosis II. 4.During meiosis I, chromatids of each homologous pair often exchange segments by crossing over. 5.None of the choices
Provide a simple definition of a carcinogen
What will be an ideal response?
Which of the following statements about heat is false?
A) It can be a measurement of the inefficiency of an energy conversion. B) It is a form of kinetic energy. C) It is a highly organized form of energy. D) It increases the amount of entropy of the system.