What is chemistry and what types of questions chemist try to answer

Some technologies have a number of negative effects. which is a negative outcome of the technology of pesticides A-increased food supply B-harmful to humans if used improperly C-cheaper food D-creation of more jobs

Which best describes a role of enzymes? providing high-energy molecules that fuel cell processes changing one type of marcomolecule to another supporting reactions involving energy transfer making up support structures in cells and tissues

When a population is split into smaller groups, why do these groups develop different traits. A. Separating the two groups decreases the chance that the two groups will diverge. B.

Creates offspring that are genetically different from parents

You and a friend want to split a double-stranded DNA molecule so you each have half. Is it better to cut the length of DNA in half so each person has a shorter length, or to separate the strands and each take one strand? Explain.

Which of the following describes work? a) lifting a 1 kg mass for 1 m b) holding a 1 kg mass for 1 hour c) moving 1 m in 1 hour d) holding 1 kg mass

How would an object blocking a bronchus affect its airflow?

Mary is campaigning for improved air quality in her city. She is very concerned about carbon and methane outputs, but not phosphorous. Why is that? A. She thinks phosphorous makes a positive contribution to air quality, B.

Huntington's disease is a genetic disorder that is caused by a dominant allele. Which of the following is true? A. A person with Huntington's disease will pass the disease onto 100% of their children. B.

Avery could barely detect sweetness in a sip of water from a pitcher in which one quarter of a teaspoon of sugar was mixed into a half gallon of water. for taste, this is avery's: