Transcript Document

IAS Midterm Review
2016
A. SCIENTIFIC METHOD
1. Read the experiment below to answer the questions below.
John is testing whether or not fertilizer increases plant growth. His hypothesis was
that fertilizer would make plants grow more. He uses 2 plants. Plant A was grown in
soil and Plant B was grown in soil with fertilizer added to it. John gave each plant
the same amount of water, and the same amount of sunlight. He measured the height
of each plant once a week for 5 weeks. At the end of the experiment, the height of
Plant A was 10 cm and the height of Plant B was 15 cm.
a. IV
•Fertilizer
b. DV
•height
c. Control group
•Plants A
d. What are 2 factors that must remain
constant?
•Type of plant, same amount of soil,
same amount of water, temperature
e. Describe what can be done to make the
results of this study more reliable.
•Repeat or increase sample size.
2. The volume of water in a graduated
cylinder is 30mL. A marble is placed into
the graduated cylinder. The volume of the
water is now 34mL.
a. What is the volume of the marble?
•34-30 =
•4 mL
3. An object has a length of 2 cm, a height of 3.2
cm and a width of 0.23 cm. What is the volume
of the object! Show all work!
•V = L x W x H
•V = 2 cm x 3.2 cm x 0.23 cm
•V = 1.472 (always round to nearest
tenth)
•V = 1.5 cm3
4. What is the mass shown in the triple
beam balance below?
328.3g
5. What is the length of the object
below in centimeters?
•5.1cm
6. What is the
volume of the liquid
in the graduated
cylinder at the
right?
16 mL
7.
a. The mass of an object is 50g and its volume is 5.5 mL. What is the
density of the object? Show all work.
•D = m
v
•D = 50 g
5.5 mL
D = 9.1 g/mL
b. Does the object float in water? Why or why not?
•It does not float. In sinks because it has a greater
density than water (1.0g/mL)
8. Identify the following temperatures in
degrees Fahrenheit and degrees Celsius.
a. melting point of water?
•0C, 32F
•c. boiling point of water?
•100C, 212F
b. freezing point of water?
•0C, 32F
9. Which part of the microscope controls the amount of light used?
•diaphragm
10. When switching from low to high power, what happens to the field of view?
•It decreases
11. What is the total magnification produced by a microscope using a 10x ocular lens
and a 10x objective lens?
•10 x 10
•100x
12. A specimen is on the right side of the field of view. Which way should you move the
slide to center the image?
•left
13. The cover slip must be lowered onto the specimen at an angle on A WET MOUNT
to avoid _______________.
• Air bubbles
14. A substance added to a wet mount, that makes cell parts more visible is called
_____________.
• stain
15.What is the diameter
of the field of view
below in millimeters
and micrometers?
16. What is the length of one
of the cells in the field of
view in millimeters and
micrometers if the diameter
__________________________
is 8mm?
21. What is the length of the object in the fiel
• 2 mm
22. When preparing a wet mount, why must the
• 2000 um
6 mm
• 3.5 mm
• 3500 um
__________________________________________
D. CELLS AND CELL PROCESSES
17. LIFE PROCESSES
B 1. Transport
__
D 2. Locomotion
___
F 3. Nutrition
___
H 4. Respiration
___
I 5. Excretion
___
J 6. Growth
___
G
___7.
Reproduction
E
___8.
Synthesis
C
___
9. Regulation
A 10. Metabolism
___
DESCRIPTION
A. Sum/total of all life processes in the body
B. Movement of materials through the body & within a cell
C. Control & coordination of all life processes
D. Movement from one place to another
E. Small molecules join to form large molecules
F. Taking in materials from the environment to be used by the body
G. Production of new individuals
H. Production of energy
I. Removal of metabolic wastes
J. Increase in cell # (cell division)
18. Which part of the cell:
a. transports materials
• cytoplasm, ER
b. carries out respiration
• mitochondria
c. stores materials
• vacuole
d. produces proteins
• ribosome
e. is semi-permeable
• Cell membrane
f. Carries out photosynthesis
• chloroplast
g. packages and ships materials
• Golgi bodies
h. gives a plant cell it’s shape
stores materials
• Cell wall
i. aids in cell division in animal
cells
• centrioles
j. Controls the cell
• nucleus
k. digests materials in animal
cells
• lysosome
19. List the 5 levels of
organization of a multicellular
organism from smallest to
largest.
• Cells tissues  organs
organ systems  organism
20. Identify the form of transport being described
(diffusion osmosis or active transport).
a. The particles in the diagram represent
.
CO2. They move from A  B.
Diffusion
•b. The particles in the diagram represent
CO2. They move from B  A.
Active transport
a. The particles in the diagram represent
WATER. They move from A  B.
osmosis
21. Identify the type of respiration being described:
d. Carried out by yeast
a. Requires oxygen
•Alcoholic
•Aerobic
Fermentation
b. Fermentation
e. produces 36 ATP
•Anaerobic
•Aerobic
c. Occurs in the
f. occurs in
muscles in the absence
mitochondria
of oxygen
•aerobic
•Lactic Acid
Fermentation
D. CHEMISTRY
22. Label the subatomic particles of the atom below and indicate its charge.
A. Electron ( negative)
B. neutron ( no charge)
C. Proton (positive)
23. Identify each phase below (solid, liquid, gas).
Gas
solid
Liquid
24. For the following questions, choose the phase change
that is described by each statement.
Melting Evaporation Condensation Freezing
a. Gas changes to liquid.
• Condensation
b. Liquid changes to gas
• evaporation
c. Solid changes to liquid
• melting
d. Solid changes directly to gas phase.
• sublimation
e. Liquid changes to a solid.
• freezing
Sublimation
25. For the following questions, determine if a physical
(P) or chemical change (C) is being described.
a. Iodine reacts with
hydrogen to form a
gas.
• C
b. Shattering of a glass
• P
d. Explosion of fireworks
•C
e. Drying of wet laundry.
•P
26. The following statements are false. Change the underlined word to make the
statement correct.
a. In a compound, elements are physically combined.
• mixture
b. In a mixture, substances cannot be separated by physical
means.
• compound
c. A compound cannot be broken down into a simpler substance.
• Element
27. For the questions below, select the family below being described
(Metals - M, Nonmetals - N, Metalloids - ME, Noble Gases - NG)
a.Very ductile and malleable.
• metals
e. Brittle
• nonmetals
b. Good conductor
• metals
d. No luster.
• nonmetals
f. Can be shiny or dull
• metalloids
28. Use the Periodic Table below to answer the following questions.
a. Which letter represents the metals?
C
b. Which letter represents the noble gases?
E
c. Which letter represents a period?
A
d. Which letter represents a group?
B&E
e. Which letter would contain some metalloids?
D
29. The graph below shows the heating curve for water. Answer the
questions using the graph.
a. Label all phase changes on the
.
diagram.
cond
b. What is the melting point of
this substance?
0°C
freezing
evap
c. What is the boiling point of this
substance?
melting
100°C
30. Base your answers to the following questions on the information and data table below and on your
knowledge of science.
During a study done on yeast cells, a student used a microscope to determine the number of yeast cells
present at various times. The results are summarized in the data table below.
•
45
40
35
30
25
a. Mark an appropriate scale on each
labeled axis.
b. Plot the data on the grid.
c. Surround each point with a small circle.
d. Connect each point.
e. What is the dependent variable?
e. Approximately how many yeast cells
were present after 2 hours?
20
15
10
5
1
2
3
4
5
6