DNA is located in the nucleus. The DNA needs to make the proteins in the ribosomes. When is send a copy of itself from the nucleus to ribosome it is
called RNA, which base is changed? (Watch 4:21 of the video to help)
U is used instead of A
U is used instead of T
U is used instead c
U is used instead G

Sadie and her mom were at a hardware store to purchase smoke detectors for their new home. sadie's mom was unsure how many units she should purchase. what is the general recommendation? a. one large one for the middle of the house b. every room in the house should have one c. kitchen, garage and laundry room- since those are where most fires happen d. every living area including the hallway by the bedrooms should have a smoke detector.