Which of these best matches an object in the solar system with its characteristic? (3 points) O comet - orbits a planet
O meteor - a streak of light
O asteroid - has a tail
O planet - orbits the moon

An enzyme lowers the energy of activation. what does that mean?

The seed coat's most important function is to provide a) a nonstressful environment for the megasporangium. b) the means for dispersal. c) dormancy. d) a nutrient supply for the embryo. e) desiccation resistance.

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides