Which word best describes the tone of the excerpt? a. mysterious b. mocking c. frustrated d. troubled

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?