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Honors Biology Midterm Practice Questions 2013-14
1.
(a)
(b)
(c)
(d)
An organelle found only in a plant cell would be a
nucleus
chloroplast
golgi apparatus
lysosome
2.
(a)
(b)
(c)
(d)
The series of membranes responsible for transport of materials in and out of the cell
endoplasmic reticulum
centrioles
golgi bodies
mitochondria
3.
(a)
(b)
(c)
(d)
The process by which a substance spreads from an area of high concentration to an area
of low concentration is known as
exocytosis
osmosis
active transport
diffusion
4.
(a)
(b)
(c)
(d)
If the nucleus was removed from a cell which of the following would occur?
nothing, the cell still functions
diffusion would not take place
the cell could not function
cell respiration would not take place
5.
Which of the following organelles would you expect to be MORE numerous in a muscle
cell than in a bone cell?
smooth ER
mitochondria
chlorplast
lysosome
(a)
(b)
(c)
(d)
Questions 6 and 7 refer to the following information
A protein was placed into 7 test tubes each containing water. The tubes were then treated
as shown in the table below and left overnight. The amount of peptides (protein
fragments) was then estimated.
Tube
Treatment
Peptides produced
Visible effects
1
added pepsinogen
no
no change
2
pepsinogen + acid
large amounts
clear
3
nothing
no
no change
4
acid
trace
no change
5
pepsinogen(boiled) + acid
no
no change
6
pepsinogen + base
no
no change
7
base
no
no change
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6.
(a)
(c)
Which tube is the control tube for the experiment?
1
(b)
2
3
(d)
4
7.
(a)
(c)
Which tubes show that the pH of the medium is important to the activity of pepsinogen?
2 and 6
(b)
4 and 7
2 and 3
(d)
5 and 7
8.
In humans most enzymes that work in the stomach cease to work when they pass into the
small intestine. The most probable explanation for this is
the different foods being digested require a variety of enzymes
some enzymes will only work in a narrow pH range
the enzymes are affected by a change in temperature
some of the products of digestion have already been absorbed.
(a)
(b)
(c)
(d)
#9-10. In the system illustrated here a bag made from dialysis tubing filled with molasses
(polysaccharide) is immersed into a beaker of water. The tubing is permeable to
monosaccharides but not polysaccharides
9.
(a)
(b)
(c)
(d)
In the above experiment after 24 hours the dialysis tubing will probably have
expanded
lost mass
deflated
not changed
10.
(a)
(b)
(c)
(d)
The final result after the experiment shown above is caused by
facilitated diffusion
osmosis
diffusion
active transport
11.
(1)
(2)
(3)
(4)
Which of the following occur as a result of osmosis?
A piece of egg white shrinks when placed in a beaker of salt water
A red blood cell placed in salt solution shrinks
Dry seeds swell when placed in water
The level of water in a cavity made in a peeled carrot falls when the carrot is placed in a
pool of syrup.
1 and 2 only
(c)
3 and 4 only
2 and 3 only
(d) all of the above
(a)
(b)
2
12.
(a)
(b)
A student made a wet mount of a letter that she observed under the microscope on low
power as “d”. What letter did she make the slide of?
“b”
(c)
“d”
“p”
(d)
“q”
13.
(a)
(b)
(c)
(d)
The process by which an enzymes active site is destroyed is known as
hydrolysis
denaturation
dissolving
thermal decay.
14.
(a)
(b)
(c)
(d)
Rough endoplasmic reticulum differs to smooth endoplasmic reticulum in that it contains
fat droplets
mitochondria
ribosomes
golgi bodies
15.
(a)
(b)
(c)
(d)
In the diagram above what is the name given to the substance labelled X?
enzyme
substrate
complex
product
The diagram below is a simplified version of a typical animal cell.
16.
(a)
(b)
(c)
(d)
The structure labelled Y is a
nucleus
mitochondrion
ribosome
lysosome
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17.
(a)
(b)
(c)
(d)
If you were to study the composition of a cell you would not expect to find
ribosomes in the cytoplasm
lipids in the cell membrane
vesicles leaving the Golgi apparatus
DNA in the the cell membrane
18.
(a)
(b)
(c)
(d)
Which of the following is true for all enzymes?
enzymes are not affected by temperature changes
enzymes are proteins
enzymes are not affected by pH changes
enzymes catalyze reactions by raising activation energy
19.
Cellulose, starch and glycogen are all grouped together in which group of organic
molecules mentioned below?
steroid
protein
polysaccharide
monosaccharide
(a)
(b)
(c)
(d)
20.
(a)
(b)
(c)
(d)
Which of the following pairs of terms describe only transport mechanisms that lack
energy input?
active transport and osmosis
diffusion and active transport
active transport and facilitated diffusion
diffusion and osmosis.
21.
(a)
(b)
(c)
(d)
Which of the following combinations contains structures found exclusively in plant cells?
cell wall and cell membrane
cell wall and chloroplast
cell wall and vacuole
cell wall and mitochondria.
The following graph shows the results of an experiment involving the breakdown of starch by an
enzyme
22.
(a)
(b)
(c)
(d)
What is the least optimal temperature for this enzyme?
30C
40C
50C
60C
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23. Which of the following functional groups are NOT present in the above molecule?
(a) Ketone, aldehyde
(b) Hydroxyl , carboxyl
(c) Carboxyl, amino
(d) Aldheyde, amino
24. Enzymes taking part in reactions within a cell
(a)
are replaced at the conclusion of each reaction
(b)
increase the rate of the reaction
(c)
are more active when less substrate is present
(d)
raises the activation energy
For #25-26 use the following figures to answer the questions regarding organic molecules.
Figure 1
Figure 2
Figure 3
Figure 4
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25. Which of the above molecules is a monomer of a triglyceride?
I – Figure 1
II – Figure 2
III – Figure 3 & 4
(a) A. I only
(b) B. II
(c) C. II & III
(d) D. None of the above
26. If each of the above molecules were to go through the process of hydrolysis, which one of
these results would occur?
(a) Figure 1 – A peptide bond is broken and a water molecule is used up
(b) Figure 2 – A glycerol bond is formed and a water molecule is produced
(c) Figure 3 - A disaccharide bond is broken and a water molecule is produced
(d) Figure 4 - A polysaccharide bond is made and a water molecule is used up
27. All of the following functions of organic molecules are correct except
(a) Proteins compose the majority of the cell membrane and direct passive diffusion
(b) Polysaccharides serve to store energy for later use in the body
(c) Triglycerides serve to store energy for later use in the body
(d) Enzymes drive the breaking down and building of macromolecules for energy use
28. A tiny flatworm lives buried in sand in the tidal zone. Inside it lives a microscopic green
algae, which is able to photosynthesise during the daylight hours. The worm lives off the starches
produced by the algae. What type of relationship is demonstrated by this example?
(a)
mutualism
(b)
parasitism
(c)
predator-prey
(d)
commensalism
29. Since the early 1980’s scientist have been predicting that the ozone layer will begin to thin out
and a large ‘hole’ has already been observed over the Arctic region. Which of the following
describes the most likely result,if the ozone layer continues to thin out?
(a)
(b)
(c)
(d)
There will be an explosion of phytoplankton numbers as the amount of light increases
there will be an increase in the amount of ultra violet rays that hit Earth
sea levels will begin to rise as the ice caps found in the polar regions melt
the levels of carbon dioxide will increase leading to increased global temperatures
30. Which of the following would NOT be a true statement with regard to the nitrogen cycle?
(a)
nitrogen is incorporated by heterotrophs to build proteins
(b)
nitrogen freeing bacteria are found in root nodules of legumes in soil
(c)
plant and animal wastes are decayed to detritus by decomposing bacteria
(d)
nitrogen gas may only be released but will not absorbed
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The graph below shows the world population changes in humans - #31.
31. The human population graph is best described as?
(a)
exponential and limited
(b)
carrying capacity and unlimited
(c)
exponential and unlimited
(d)
carrying capacity and limited
The questions 32-33 refer to the following food web.
Bears
Fox
Squirrels
Birds
Mice
Rabbits
Nuts/Fruit
Insects
Leaves/twigs
32. The main source of energy in this food web is from?
(a)
Leaves/twigs to rabbits
(b)
Rabbits to Leaves/twigs
(c)
Squirrels to bears
(d)
Insects to Mice
33. If the rabbits were killed by a virus what effect would this have on the mouse population?
(a)
no effect
(b)
the mouse population would increase
(c)
the mouse population would decrease
(d)
the population would initially decrease then return to normal
Analogies- Pick the choice that best fits the analogy relationship
34. -OSE is to -SACCHAR as HERBA- is to ____________
A. -PHYTOB.
DEC.
OMNID. SYN35. HYPER- is to HYPO- as PHOBIC- is to _________
A.
BIOB.
EUC.
-LYSIS
D.
-PHILIC
7
Write the word parts to form the word based on the given meaning
36. true nucleus
37. all devouring
38. two sugars
Answers for Honors Midterm Practice 2013-14
1.b
6.c
10.b
16.b
21.b
2.c
7.a
11.d
17.d
22. d
3.d
8.b
12.b
18.b
23.a
4.c
9.a
13.b
19.c
24.b
5.b
14.c
20.d
25.b
15.b
26.a
27.a
28.a
29.b
30.d
31.c
32.a
33.b
34.a
35.d
36. eukaryote
37. omnivore
38. disaccharide or diose
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