Which information is most useful?
What will be an ideal response?
Each H atom can form one hydrogen bond with an O atom on another water molecule.
Each O atom can form hydrogen bonds with two H atoms on other water molecules.
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What are 4 distinguishing characteristics that separate animals from other organisms?
What will be an ideal response?
The systems that support and move the body are
A. skeletal and muscular. B. nervous and endocrine. C. circulatory and respiratory. D. digestive and circulatory. E. urinary and immune.
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
The oxygen content of air at sea level is approximately
a. 21 percent. b. 78 percent. c. 0.04 percent. d. 0.96 percent. e. 100 percent.