Download Document

 Academic Biology – Midterm Exam 2015-2016
SCIENTIFIC METHOD/CHARACTERISTICS OF LIVING THINGS
Skills:
 Organize the steps of the scientific method and match to a general description of each step.
 Differentiate between independent and dependent variables.
 Create a graph to analyze data
Kari has been doing research on a new chemical to help tomato plants grow and produce bigger, healthier
tomatoes. Kari hypothesized that the new chemical would increase plant growth producing larger tomatoes. She needed
to set up an experiment to test the new organic fertilizer. Kari set up her experiment in a greenhouse with the same
species of tomato plant in 5 small flats. She kept all conditions the same such as humidity, temperature, soil, amount of
water, etc. Listed below is how she administered the fertilizer and the data she collected after six months.
Plant trays
Amount of fertilizer per day
Growth of plant
Color of plant
1
4 mL
2 inches
Green
2
6 mL
5 inches
Green
3
8 mL
6 inches
Greenish-Yellow
4
10 mL
9 inches
Yellow
5
0 mL
3 inches
Green
Identify the following:
1. Control group(s)?
_______________________________________________________
2. Experimental group(s)? _______________________________________________________
3. Controlled variable(s)? _______________________________________________________
4. Independent variable? _______________________________________________________
5. Dependent variable? _______________________________________________________
8. Why did Kari only test one variable in this experiment?_____________________________________________
9. What was the purpose of the control(s) group in this experiment?_____________________________________
Ecology
Skills:




1.
Define the words, population, community, and ecosystem
Explain the difference between an abiotic and biotic factor
Identify how energy is transferred in an ecosystem
Determine if a population is developing or developed by looking at a population density
graph.
Write the definitions for the words in the chart below:
Word
Population
Community
Ecosystem
Abiotic Factor
Biotic Factor
Definition
2.
a. The chart to the left is called
a:
i. Food Chain
ii. Food Web
b. What does it show?
c. Which animals would be
primary consumers?
i. Mouse
ii. Wild Cat
iii. Lion
d. Which level would have the
least amount of energy?
i. 1st trophic level
ii. 2nd trophic level
iii. 4th tropic level
3. Biotic factors are:
living
4. An example of a biotic factor is:
sunlight
non-living
temperature
grass
5. Does the graph above represent a developed or undeveloped country? How can you tell?
CHEMISTRY/BIOCHEMISTRY
Skills:
 Recognize that organic compounds contain the element Carbon.
 Identify the four biological compounds in living things and describe their important
biological functions: lipid, protein, carbohydrate, nucleic acid
 Explain what are enzymes and why are they important in living things?
 Identify that extreme temperature and pH alter the function of an enzyme.
6.
Fill in the chart on organic compounds.
Carbohydrates
Proteins
Lipids
Nucleic Acids
Basic unit
(monomer)
Major Function(s)
7.
List the characteristics of life:
CELL STRUCTURE AND FUNCTION
Skills:
 List the cell theory.
 Differentiate between a prokaryote and a eukaryote.
 Identify, describe the functions, and state if found in plant cell, animal cell or both of the
following organelles:
a. mitochondria
b. ribosomes
c. nucleus
d. cell wall
e. cell membrane
f. centrioles
2. There are 3 components of the cell theory.
a. All organisms are composed of one or more ____________.
b. The cell is the basic unit of _________________.
c. All cells come from ________________ cells.
3. There are 2 basic cell types -- Prokaryotes and Eukaryotes. Identify the following as a Prokaryote or Eukaryote.
a. lack membrane-bound organelles _______
b. multicellular ________
c. has a nucleus ________
d. bacteria is an example __________
e. animals, plants, fungi and protist __________
4. Listed below are the functions of the organelles. Identify the organelle.
nucleus
ribosome
cell membrane
cytoplasm
a. makes proteins _____________
b. makes energy for cell ______________
d. control center that contains DNA ______________
e. membrane that controls what goes in and out of cell ___________
CELLULAR TRANSPORT
Skills:
 Recognize that phospholipids are the main components of the cell membrane
 Draw and label the hydrophobic and hydrophilic parts of the cell membrane
 Differentiate between passive and active transport.
 Describe what happens to cells placed in hypertonic, hypotonic, and isotonic solutions?
 Define osmosis.
 Describe what is meant by semi-permeable membrane
1.
Cell transport is the movement of materials in and out of the cell through the cell membrane.
There are 2 types – Passive and Active Transport. Identify as active or passive.
a. osmosis and diffusion are examples ____________
b. requires energy __________
c. does not require energy ___________
d. endocytosis and exocytosis are examples _____________
e. the movement of water from an area of high to low concentration _____________
f. the movement of particles from an area of high to low concentration _____________
2.
F_______________ diffusion uses protein channels to help move material across the membrane.
3.
What does the selective permeability mean?
____________________________________________________
4.
The plasma membrane is made of ______ layers. It contains fluid and phospholipids.
Draw a phospholipid and label parts.
8.
There are 3 types of solutions – isotonic, hypertonic and hypotonic. Identify the solutions.
a. concentration of solute outside and inside the cell are equal _________________
b. concentration of solute is higher outside than inside the cell ___________________
c. concentration of solute is higher inside than outside the cell __________________
d. water moves out of cell _______________
e. water moves in the cell ______________
f. no movement of water ______________
Bacteria / Viruses
Skills:
 Explain the difference between bacteria and viruses
 List examples of bacteria and viruses
 Explain why antibiotics are used to treat bacteria but not viruses
1.
Which of the following causes AIDS?
a. prion
b. HIV
c. bacteriophage
d. viroid
2.
Viruses are not considered living because
a. they have no nucleic acids.
b. they do not metabolize.
c. they grow but cannot reproduce.
d. their cytoplasm doesn’t contain organelles.
3. In the space provided, write B for bacteria or V if the characteristic describes viruses.
_____ a living, unicellular organism
_____ have ribosomes
_____ reproduce by binary fission
_____ have a cell wall
_____ are treated by antibiotics
_____ requires a host cell