What enzyme found in saliva breaks chemical bonds in starches forming sugars? A. amylase B. chyme C. pepsin D. hydrochloric acid

What causes pioneer grasses and weeds that have grown in an abandoned field to die?

What is the relationship tween genes and chromosomes a. Chromosomes contain one or more genes b. Genes contain one or more chromosomes c. Chromosomes use DNA code to manufacture genes d. Genes use DNA code to manufacture proteins for chromosomes

How would endosymbiosis have been mutually beneficial for pre-eukaryotic cells and for the small?

A person is outside exercising. Body temperature begins to rise, and the person starts to sweat. Their body temperature then returns to normal, and the body stops sweating. a Positive b Negative c Allosteric d homeopathic

Some species of stick insects have wings, others are wingless. recent research indicates that wings have been gained and lost several times during the evolutionary history of stick insects.

If glycolysis was blocked in yeast, which of the following would decrease in concentration

Which factor most likely caused animals and plants in India to differ greatly from species in nearby southeast Asia? a. The species became separated by convergent evolution. b. The climates of the two regions are similar. c.

Neurons that transmit information from sensory cells to the central nervous system are part of the

What kind of energy might be saved up for future use?

Which of the following does NOT contribute to genetic variation among plants? a. Flowering time b. An increased number of chromosomes c. Mutations d. Genetic recombination