Download Bio A Ch 2 review

Bio A Ch 2
review
1. Which of the following is the basic unit of
matter?
A. Cell
B. Atom
C. Electron
D. Neutron
2. What particle is not included in the
nucleus of an atom?
A. Proton
B. Electron
C. Neutron
D. Isotope
3. A covalent bond involves
___________________
____________________.
Sharing electrons
4. When a molecule has a slight negative
side and a slight positive side it is
______________.
polar
5. A lipid that is used as a chemical
message is known as a(n)
_________________________.
steroid
6. Polysaccharides are
A. Carbohydrates
B. lipids
C. nucleic acids
D. proteins
7. The organic molecules that provide
organisms with energy are
A. Carbohydrates
B. B. lipids
C. C. nucleic acids
D. D. proteins
8. A monosaccharide would turn the
indicator Benedict’s solution
__________________.
orange
9. Fats, oils and waxes are
A. carbohydrates
B. Lipids
C. nucleic acids
D. proteins
10. A base has a pH __________________
than 7.
More/greater
11. When making Country Time lemonade,
the lemonade mix is the
___________________.
solute
12. The compounds that appear on the right
of a chemical equation are the
________________.
products
13. A protein that increases the speed of
chemical reactions is known as a(n)
A. Steroid
B. Iodine
C. Enzyme
D. substrate
14. The process of putting monomers
together into polymers is known as
_________________.
polymerization
15. A reaction that requires energy to occur
is known as
___________________________.
endothermic
16. Two elements that have the same
number of protons but different number
of neutrons are
A. Isotopes
B. Ions
C. Solutes
D. suspensions
17. The biological molecule that stores
genetic information are known as
A. carbohydrates
B. Lipids
C. nucleic acids
D. proteins
18. What measures the concentration of
hydrogen ions in a solution?
_____________________
pH scale
19. Organic molecules that turn biuret
reagent violet are
A. carbohydrates
B. Lipids
C. nucleic acids
D. proteins
20. The active site is where an enzyme and
the _____________________ bind
together.
A. isotope
B. Substrate
C. lipid
D. proteins
21. What is the name for the attraction
between molecules of the same
substance?___________
cohesion
22. Your body has ________________ to
prevent sudden changes in pH.
buffers
23. The organic molecules that include the
natural wax, a waterproof layer, found on
fruit are
A. carbohydrates
B. Lipids
C. nucleic acids
D. proteins
24. ____________________ are the
monomers of proteins.
A. amino acids
B. Polymers
C. Nucleotides
D. monosaccharides