An increase in the extracellular concentration of salts will cause body cells to

The heart's internal pacemaker beats by: an internal implant that sends an electrical impulse through the heart the excitation of cardiac muscle cells at the sinoatrial node followed by the atrioventricular node the excitation of cardiac muscle

4. Chargaff's research had shown that there are four monomers in DNA, in which two are always present in equal amounts and the other two are always in equal amounts. We know that these monomers are the of DNA.

A biologist discovers a new unicellullar organism that possesses more than two flagella and two small, but equal-sized, nuclei. The organism has reduced mitochondria (mitosomes), no chloroplasts, and is anaerobic.

Your ability to drive safely can be impaired by use of certain over-the-counter drugs true or false

Pertaining to embryonic connective tissue from which connective tissue tumors arise

Think about the following items: a candle flame, a balloon floating in the air, and bubbles blown from a bubble wand. Describe characteristics that could indicate life in these items, and characteristics that show they are not alive.

If a person wanted their child to have 6 fingers on each hand, explain how you think a doctor would be able to accomplish this

Why are you less likely to find fossils in metamorphic rocks?

What is the ultimate energy source for most forms of life on earth?

How is the skeleton similar to the frame of a house? both are made of calcium. both provide shape and support. both allow movement. both separate the structures into compartments.?