You have just touched a hot mug of coffee. your hand immediately and reflexively pulls away. this action was controlled by your a. central nervous system b. spinal cord c. brain d. all of these options

What best describes lactic acid fermentation?

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.