Answer please whoever answer & explain first gets brainliest. a protein that speeds up a chemical reaction is --

a) enzyme
b) peptide bond
c) isomer
d) polymer

Enzyme.

Enzymes are protein catalysts that are produced by living plants and animals. They help speed up many biological reactions like the conversion of urea to ammonia and starch to maltose.

Peptide bonds, isomers and polymers aren't the correct answers as they are neither proteins nor do they speed up chemical reactions. They are purely structural terms.

Hope this helps :D

14 chromosomes

explanation:

sperm cells of the russian dwarf hamster contain 14 chromosomes. how many chromosomes are found in a normal body cell of the russian dwarf hamster? a cell with 20 chromosomes undergoes mitosis.

depends on your school

when i was in high school i took ap biology my senior year and it was the hardest one for me because my teacher finished the material within the first month of school and then went on to doing advanced college level it was horrible. but at a nearby school ap biology was one of the easier aps. also, it depends on what you are interested i like math a lot so ap calculus was easier for me than most but i hate history so ap us government was harder for me than most.