Differences between amino acids are normally due to differences in which part of the molecule?

The mineral particles found in the layers of a soil, including the topsoil and subsoil layers, were originally weathered from A. the soil's humus. B. organisms living in the soil. C. the soil's parent material. D. the soil's groundwater.

Many scientific discoveries begin with direct observations. Which could be a direct observation? A. Ants communicate by airborne chemicals B. Birds navigate by using magnetic fields C. Butterflies eat nectar from flowers D.

Which aspect of this source should make the reader question its credibility? A. It is not written by an authority. B. It is not published in a major city. C. It was not written recently. D. It is a peer-reviewed journal.

Most organic polymers are named based on the monomers used in their production. True or False

Do you think the generalization that all organisms are composed of cells was established using controlled experiments or multiple observations

Assuming that a mountainside, which slopes and has a plain, which is flat, received the same amount of rain, which is more eroded?

Which would least likely be seen on an information pamphlet for red tide? People tend to stay out of the water in the area of a red tide. People are warned to avoid eating shrimp and lobster.

Resident microflora: a. can be found in the stomach and are adapted to acidic conditions b. may be responsible for opportunistic infections in immunocompromised c. may be permanent or transient

Scientific thinking: how can scientists assess the health risks of trans fats

When researching online, as long as the gathered information is the result of a valid Internet search engine, it is not necessary to analyze it for bias.