When an atom has gained an electron it

becomes a cation.

becomes a different isotope of the same element.

has a different atomic number.

becomes an anion.

The skeletal muscle organelles that actually contracts is (are) the: A) sarcolemma. B) sarcomere C) transverse tubules. D) myotubules. E) myofibrils.

What is sexual reproduction and asexual reproduction in plants?

Darwin and wallace independently arrived at the same conclusion that species change over time. which observations supported their conclusions

In which environment would you find dolphins? A) Abyssal B) Sub-littoral C) Rocky shore D) Pelagic

The difference between a psychological disorder versus "normal" behavior:

How might sensing movement be more important to an insect than seeing details?

What is true about the relationship of adenine and thymine? - Adenine and thymine are a base pair - Adenine and thymine are antiparallel - Adenine and thymine form a covalent bond - Adenine and thymine are phosphates

A group of students are reviewing the common conditions associated with the upper respiratory tract. The students demonstrate understanding of the material when they identify what as a response to a specific antigen?

Coyotes who have been fed sheep carcasses laced with a nausea-inducing poison are less likely to later prey on sheep. This phenomenon is best explained by which classical conditioning concept?

In their native habitat, a fungus that kills gypsy moths in the larva stage controls the population. But in the United States, attempts to control the population aren't 100% efficient.