4. Eularyotic cells contain organelles that harvest energy from organic compounds to make ATP. ATP is the main form of energy used by cells.
Wbleh cell organelles are responsible for making most of the cell's
ATP?
A. endoplasmic reticulum
B. lysosomes
C. mitochondria
D. chloroplasts

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs