Modules 1-6
Reminder:
 Midterm Thursday.
 All missing work due Thursday afternoon.
Agenda 3/26
 Test Corrections: Module 5 Cell division
15 min
 *if you finish test corrections early, review your midterm problems in your
handbook.
 DNA Mini quiz
 Review Midterm problems in book
 Midterm Review powerpoint … game?
25 min
20 min
20 min
Progress Check 3/26: Midterm Review
 1. What is the subunit of a lipid? (chart for #10)
 2. What do prokaryotic cells lack that eukaryotic cells have?
(#16-17)
 3. What cell organelle is responsible for protein synthesis?
(#18)
 4. What happens to a blood cell that is 15% NaCl when it’s
placed in a solution that is 100% water? (answer to #28)
Journal 3/26 - Mutations
 Write the definition for the term “mutation”.
 DIFFERENTIATE between a “point” and a “frameshift”
mutation in your own words.
 Finally draw a picture (or give an example) of the term.
Midterm Breakdown! 50 Multiple Choice
 8  Module 1 [STERNGRR, Homeostasis, Variables, Reading Graphs]
 8  Module 2 [pH, Acids & Bases, buffer]
 7  Module 3 [cell organelles & their functions]
 11  Module 4 [diffusion, osmosis, photosynthesis, respiration]
 6  Module 5 [Mitosis, Meiosis]
 10  Module 6 [DNA, replication, transcription, translation]
1. Interpreting
Graphs
160
140
 According to the graph at
Nubmer of Bacterial Colonies
left, what is a temperature
range for optimal bacterial
growth?
120
100
80
60
40
20
0
0
10
20
30
Temperature (C)
40
50
60
2. Variables
 A scientist set up three beakers,
each containing 500ml of water
and 10 worms. The scientist then
added 10 drops of Chemical A to
the first beaker, 50 drops of
Chemical A to the second beaker,
and 0 drops of Chemical A to the
third beaker. The scientist counts
the number of worms alive every
12 hours for 1 week.
 CONTROL GROUP:
 INDEPENDENT VARIABLE:
 DEPENDENT VARIABLE:
3.
 What is the highest magnification for the
10x
W
microscope at right?
10x, 40x 50x
4.
 Both a bird and a flower react to
changes in their external
surroundings, helping them to
maintain a constant internal
environment. Which process
describes this statement?
 A. Equilibrium
 B. Predation
 C. Nutrition
 D. Homeostasis
5.
 Our bloodstream circulates necessary materials through
our body, like bringing oxygen in and carrying carbon
dioxide out. Which of the following life processes is this
movement an example of?
 A. Synthesis
 B. Regulation
 C. Reproduction
 D. Transport
6.
The building of proteins by tRNA during
translation is an example of what life function?
A. Synthesis
B. Respiration
C. Reproduction
D. Transport
7.
Organisms using oxygen for the production of
energy is the process of
 A. Transport
 B. Excretion
 C. Respiration
 D. Regulation
8.
 The threads seen in the
nucleus of a cell are
examples of what type of
molecule?
 A. Carbohydrates
 B. Lipids
 C. Nucleic acids
 D. Proteins
9.
What is the pH range of an acid?
What is the pH of a neutral substance?
What is the pH of a base?
10.
 At what pH range does
Pepsin function optimally?
 Is this range basic or acidic?
 Would you say that Trypsin
functions best at an acidic
pH?
 Why or why not?
11.
 Which of the following is characteristic of an
enzyme?
 A. It regulates the rate of a specific chemical reaction
 B. It is destroyed after each chemical reaction
 C. It provides energy for any chemical reaction
 D. It is a catalyst
12.
A ____________________ is a substance that
helps to regulate pH and maintain homeostasis.
13.
 Which of the following is true of carbohydrates?
 A. Serve as enzymes and components of cell structures
 B. Contain the genetic code and carry on polysaccharide
synthesis
 C. Transfer information from the nucleus to the cytoplasm
and serve as structural units
 D. Serve as sources of energy and as components of cell
structures
14.
What is the difference between a
prokaryotic and a eukaryotic cell?
15.
Which of the following is a cell structure found
in ALL cells?
 A. Ribosome
 B. Nucleus
 C. Mitochondria
 D. Chloroplast
16.
Which organelle would be expected to be more
numerous in a muscle cell than in a skin cell?
a. nuclei
b. mitochondria
c. vacuoles
d. ribosomes
17.
 A student cut a piece of
potato into 8 cubes of equal
size and placed them in a
beaker containing a 25% salt
solution. One cube was
removed from the solution
every 10 minutes, and the
average length of two sides
determined.
 What happened to the size of
the potato?
Time
Average length
(min)
(mm)
0
5.0
10
4.5
20
4.0
30
3.5
40
3.0
50
2.5
60
2.5
70
2.5
Why take measurements of the
potato after 0 minutes?
18.
 What gas is released by yeast when it’s mixed with
sugary apple juice?
 Hint: Anaerobic respiration
19.
Which equation illustrates a process of nutrition
carried out within a leaf?

a. water + glucose  carbon dioxide + oxygen

b. water + carbon dioxide  glucose + oxygen

c. glucose + carbon dioxide  water + oxygen

d. water + ATP  glucose + carbon dioxide
20.
Cellular respiration is carried out by which of the
following?

a. all living organisms all of the time

b. animals but not plants

c. animals all of the time but plants only at night

d. heterotrophs but not autotrophs
21.
 34. Which of the following processes creates the most
ATP?

a. aerobic respiration

b. anaerobic respiration

c. photosynthesis

d. active transport
22.
What is true about any two normal gametes from a
human male parent?
a. Each has a diploid number of chromosomes
b. They can combine to form a new organism
c. Their chromosomes are exactly the same
d. They have the same number of chromosomes
23.
 What is the process illustrated by this diagram?
• What is the correct order for these pictures?
 What process of is illustrated by this diagram?
24.
 A. Independent assortment
 B. Crossing-over
 C. Random fertilization
 D. Nondisjunction
25.
In humans, mitosis produces ______ daughter
cells with ______ chromosomes each.
In humans, meiosis produces _______ daughter
cells with _____ chromosomes each.
26.
DNA replication results in two DNA molecules…
a. each with two new strands
b. one with two new strands and the other with two
original strands
c. each with one new strand and one original strand
d. each with two original strands
27.
Which type of RNA functions as the blueprint
of the genetic code?
a. rRNA
b. tRNA
c. mRNA
d. RNA polymerase
28.
The types of enzymes (proteins) produced in a cell are
regulated by the

a. order of the nucleotides in DNA molecules

b. shape of DNA molecules

c. size of nucleotides in DNA molecules

d. location of DNA molecules
29.
What happens during the process of transcription?

a. messenger RNA is made from DNA

b. the cell uses information from messenger
RNA to produce proteins

c. transfer RNA is made from messenger RNA

d. copies of DNA molecules are made
30.
Unlike DNA, RNA contains
a. adenine
b. uracil
c. phosphate group
d. thymine