MoGEA science and social studies questions with correct answers

A normal sperm must contain: CORRECT ANSWER 23 chromosomes because it must contain one of each of the human chromosome pairs The sound produced by a drum is much louder and lower pitched than that produced by a bell. Which of the following statements is true about the sound wave produced by a drum compared to that produced by a bell? CORRECT ANSWER The amplitude is greater and the wavelength is longer Two sound waves of exactly the same frequency and amplitude are produced by sources that are in precisely the same position. If the sound waves are out of phase by one-half a wavelength, what will be heard by an observer standing a short distance away? CORRECT ANSWER A sound with varying intensity Which of the following animals displays the greatest fitness? CORRECT ANSWER A male wolf that dies young but has 4 cubs that are raised by an unrelated female because the ability to produce offspring shows the greatest strength Gene variants are called: CORRECT ANSWER Alleles The portion of a DNA molecule that encodes a single amino acid is an: CORRECT ANSWER codon proteins are made by: CORRECT ANSWER ribosomes which of the following is not part of a ge