In the 1930s, American biochemist Wendell Stanley observed crystals of tobacco mosaic virus. Based on this evidence, Stanley inferred that viruses

Similarities between humans and snails.

Which of the following identifies a measurement, its SI unit, and the tool most commonly used to measure it? A. length, meter, ruler. B. temperature, degrees Fahrenheit, thermometer. C. weight, gram, scale. D. volume, millimeter, meniscus

The nervous system that controls respiration is called autonomic because it A. conducts impulses. B. deals with the exchange of gases. C. isn't subject to voluntary control. D. uses nerves of the body.

Which event causes tides? A. the blowing of the wind B. the movement of warm and cool water C. the interaction of the moon, the Sun, and Earth D. the mixing of surface water and deep ocean water

What unit of measurement do you use to measure mass

The biomolecule described is a

Chemical reactions in cells are faster than the same reactions outside cells. True False

What are WBCs and what do they create to fight off infections?

Which term names the replacement of living cells with minerals to form a rock-like fossil of a living thing? A. mold fossil B. petrified fossil C. cast fossil D. trace fossil

What is the diffrence between working in a field or laboratory