Bio 1201 Gregg Exam 1 2026 Molecular Biology Drill Pack Answer Sheet

BIO 1201 GREGG EXAM 1 2026 MOLECULAR
BIOLOGY DRILL PACK ANSWER SHEET

◉ ______________ consists of chemical elements in pure form and in
combinations called compounds.
Answer: Matter


◉ Matter consists of ________________ in pure form and in
combinations called compounds.
Answer: Chemical elements


◉ Organisms are composed of _____________.
Answer: Matter


◉ _______________ is anything that takes up space and has mass.
Answer: Matter


◉ Matter is anything that takes up __________ and has _______.
Answer: Space; mass


◉ Matter is made up of ____________.
Answer: Elements

,◉ An _________________ is a substance that cannot be broken down
other substances by chemical reactions
Answer: Element


◉ A ___________________ is a substance consisting of two or more
elements in a fixed ratio.
Answer: Compound


◉ T/F: A compound has characteristics different from those of its
elements
Answer: True


◉ An element's properties depend on the structure of its ______.
Answer: Atom


◉ An ____________ is the smallest unit of matter that still retains the
properties of an element.
Answer: Atom


◉ Atoms can be broken down into smaller particles like ___________
(no charge), ______________ have a positive charge, and _____________
(negative).

, Answer: Neutrons, protons, and electrons


◉ No electrical charge
Answer: Neutron


◉ Postive charge
Answer: Proton


◉ Negative charge
Answer: Electron


◉ _____________ and ___________ form from the atomic nucleus.
Answer: Neutrons and protons


◉ What do neutrons and protons form from?
Answer: Atomic nucleus


◉ ________________ form a "cloud" of negative charge around the
nucleus.
Answer: Electrons


◉ Electrons form a "_______" of negative charge around the nucleus.