To which category of organic compounds do enzymes belong?

a. lipids

b. proteins

c. nucleic acids

d. carbohydrates

Which is a basic unit of a square molecule

What structures provide locomotion in paramecium? How does Amoeba capture food?

What are the repetitive dna sequences present at the ends of eukaryotic chromosomes called?

Which of the following statements is most accurate concerning the founder effect? A. It increases genetic variation B. It is not an example of genetic drift C. It results when a small population breakers away from a larger one D.

The first embryonic stem cell trials too place October 2010 to treat a patient. This patient had been left partially paralysed by nerve damage after a spinal injury. Explain why it is an advantage to use embryonic stem cells to treat spinal injuries.

3. How big is the Clark Refractor in Arizona?

Radioactive uranium-235 has a half-life of 704 million years. If it was incorporated into dinosaur bones, could it be used to date the dinosaur fossils?

hurricanes can damage or destroy barrier islands. suppose a barrier island that separates an estuary from the ocean was damaged by a storm: how would this affect the estuary

A cell with a chromosome number of four undergoes meiosis what is the result

How does acid precipitation cause chemical weathering?