Atoms are made up of

protons

neutrons

compounds

elements

electrons

What is considered to be the first evidence of differentiation in the cells of an embryo? A. cell division occurring after fertilization B. the occurrence of mRNAs for the production of tissue-specific proteins C.

The world's population has been growing exponentially. Some scientists consider the effects of human population growth a tragedy of the commons. What is the common resource in this example? A. Privately owned land B. Planet Earth C.

Which unhealthy behaviors should you avoid?

Student compares two different proteins. the student notices that the primary structures differ in both the number of amino acids and the sequence of amino acids. based on this information, what can the student infer?

Which element has a molar mass of 30.97g / mol?

What is relative concentration of water in hypotonic solution?

How do scientists use fossils to study earth history

When does a baby's umbilical cord fall off?

Why might lower folic acid (a precursor to Tetrahydrofolate) levels in pregnant women lead to arn increased risk of birth defects for the baby?

When the body cells are hypotonic to the blood plasma, water will move from intracellular fluid to extracellular fluid?