Q: Answer the following question given this paragraph: Electromagnetic force is a force of attraction or repulsion between all electrically charged particles. This force is transferred between charged particles of matter by fundamental force-carrying particles called photons. Because of electromagnetic force, particles with opposite charges attract each other and particles with the same charge repel each other. Q: What do we call the force of attraction or repulsion between electrically charged particles? Choices: - chemical force - mechanical force - gravitational pull - electromagnetic force A:
A: electromagnetic force

Q: Answer the following question given this paragraph: Other animal-like protists must "swallow" their food through a process called endocytosis . Endocytosis happens when a cell takes in substances through its membrane. The process is described below:. Q: What happens when a cell takes in substances through its membrane? Choices: - filtration - metastasis - dialysis - endocytosis A:
A: endocytosis

Q: Answer the following question given this paragraph: All alkali metals are very soft and can be cut easily with a knife. Due to their high reactivity, they must be stored under oil to prevent them from reacting with oxygen or water vapor in the air. The reactions between alkali metals and water are particularly vigorous and include the rapid production of large quantities of hydrogen gas. Alkali metals also react easily with most nonmetals. All of the alkali metals are far too reactive to be found in nature in their pure elemental form. For example, all naturally occurring sodium exists as a compound, such as sodium chloride (table salt). Q: The reactions between alkali metals and water are particularly vigorous and include the rapid production of large quantities of what gas? Choices: - helium - oxygen - carbon - hydrogen A:
A: hydrogen

Q: Answer the following question given this paragraph: The related field of biochemistry overlaps to some extent with organic chemistry. Biochemistry is the study of the chemistry of living systems. Many biochemical compounds are considered to be organic chemicals. Both of the molecules shown above are biochemical materials in terms of their use in the body, but organic chemicals in terms of their structure and chemical reactivity. Q: Biochemistry is the study of the chemistry of? Choices: - the Earth - inorganic matter - abiotic factors - living systems A:
A: living systems