Q: Q: What do we call the force of attraction or repulsion between electrically charged particles? A: | OPTIONS:
- chemical force
- mechanical force
- gravitational pull
- electromagnetic force
A: electromagnetic force

Q: Q: What happens when a cell takes in substances through its membrane? A: | OPTIONS:
- filtration
- metastasis
- dialysis
- endocytosis
A: endocytosis

Q: Q: The reactions between alkali metals and water are particularly vigorous and include the rapid production of large quantities of what gas? A: | OPTIONS:
- helium
- oxygen
- carbon
- hydrogen
A: hydrogen

Q: Q: Biochemistry is the study of the chemistry of? A: | OPTIONS:
- the Earth
- inorganic matter
- abiotic factors
- living systems
A: living systems