PLEASE HELP Identify which is an example of protein
A)lactose substrate that is digested into two monosaccharides
B)sucrase substrate that digest into glucose
C) catalase enzyme that digest hydrogen peroxide into water and oxygen
D) hydrogen peroxide that digests catalase enzyme into water.

6. in the dna double helix, how are the two strands of dna held together? a. chemical bonds between base pairs hold the two strands of dna together. b. hydrogen bonds between the base pairs hold the two strands of dna together. c. hydrogen bonds between sugar groups and phosphate groups hold the two strands of dna together. d. chemical bonds between sugar groups and phosphate groups hold the two strands of dna together.

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?