If a cell is like a city, then city hall, or the control center, would be the cell's
a) membrane.
b) mitochondria.
c) nucleus.
d) ribosomes.

Which of the following is the source of energy for photosynthesis? a.) glucose b.) chlorophyll c.) carbon dioxide d.) sunlight

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water