Observations are the basis of

What makes up amino acids

Definition of active transport

Is used for precise focusing

What are large molecules assembled from smaller, individual molecules? A. nucleotides. B. polymers. C. ribosomes. D. hydrogen bonds.

Scientists have studied the fossilized shells of prehistoric, single-celled marine organisms. Some of these shells were thin, which indicates that the organisms lived in very warm ocean water.

Describe the similarities and differences between alcoholic fermentation carried out by yeast to make alcoholic beverages and lactate-acid fermentation carried out within the human body.

Which characteristic is not a characteristic of plastic? A. easy to mold B. good conductor of heat C. lightweight and durable D. repels water

An adult male pig's urine contains a chemical substance that accelerates the onset of puberty in female pigs. What is this substance called?

Which of the following is a physiological adaptation?

Which measures the mass of an object?