Which of the following repeating units make up a protein?

1) carboxylic acids

2) amino acids

3) fatty acids

4) peptide acids

What is the diffrence between an observation and an infrence

While gazing into an aquarium, you see bubbles from an aquatic plant. What is the name of this effect?

What are the primary sources of particulate pollution

Is not required for the human energy-conversion process. O A. Heat OB. Food OC. Oxygen OD. Carbon dioxide

Gregor mendel contribute to the study of biology by careful objective study of a - pedigrees b - bacteria c - heredity d - environment

Skin cell should generate an exact copy of itself. Through which process would this occur?

Which branches of natural science include the study of an organism that lived 10 million years ago? A. physical science and Earth science B. life science and Earth science C. life science and physical science

Which of the following promotes bone resorption

An object has a mass of 8.00 kg. what is the force due to gravity in the object

How many moles are equal to 1.20 x 10^24 atoms of sulfur