Biology Jeopardy Ch 2 ReviewSection 1 Section 2 Section 3 Section 4 Labs Terms
1 1 1 1 1 1
2 22222
3 3 33 3 3
4 444 4 4
55 555 5
A weak attraction between polar molecules is called a ____ bond.
hydrogen
2
Atoms share electrons in a ____ bond.
covalent
3
True or False: Covalent bonds form when two or more
atoms share electrons.
True
4
A nucleotide has four parts? True or False
False – they have 3 parts
5
A substance that is composed of only one type of atom is
called a(n)
Element
6
Acidic solutions have a pH that is
less than 7.
7
Hydrogen ions, H+, react with hydroxide ions, OH-, to form
Water
8
When placed in the same container, oil and water do not
mix because
water is polar and oil is nonpolar.
9
Water is important to life because it?
surrounds all cells,
is found inside cells, and
influences the shape of the cell membrane.
10
_____ allows a needle to float on the water.
Surface tension
11
A molecule shaped like a spiral staircase (double helix)
is typical of
deoxyribonucleic acid.
12
ATP (adenosine triphosphate) stores energy for cells to use
in the bonds between its
phosphates.
13
DNA stores
heredity information.
14
The two types of nucleic acids are
DNA and RNA.
15
The shape of a protein is primarily determined by
the type and sequence of its amino acids.
16
Most enzymes are?
proteins
17
Energy needed for metabolism comes from?
Foods – lipids, proteins, carbohydrates
18
____ are biological catalysts.
enzymes
19
The molecule on which an enzyme acts is called a(n)
substrate.
20
Without enzymes, the chemical reactions in your
body would
occur too slow to support life processes.
21
Benedict’s solution is used to detect the presence of?.
reducing sugars, such as glucose.
22
Lugol’s iodine solution is used to detect the presence of
starch.
23
Amylase is a digestive enzyme that breaks down
starch into
cellulose.
24
Due to the polarity of water, compounds that dissolve best
in water contain
polar bonds.
25
Many laundry detergents contain _____, which make
removal of stains easier.
enzymes
26
made of only one type of atom
element
27
attraction between different substances
adhesion
28
attraction between molecules of the same substance
cohesion
29
evenly distributed mixture
solution
30
a substance made of the joined atoms of two or more
different elements
compound
31