Science Worksheet

1.4.3 Test (TST): Teacher-Scored Unit TestBiology
Points Possible:50
Test
Name: misha benhamou
Date:
In this test you will apply what you have learned in the unit. Please answer the questions
below. Submit this to your teacher when you are done.
1. a) Throughout history, people have been studying the living and nonliving world. What is the
name of the formal procedure scientists use to study the world around them? (5 points)
b) Describe one way two scientists could benefit from a disagreement with each other. (5
points)
2. Scientists have a great deal of responsibility. Why is it important for scientists to
communicate their results accurately to people? (5 points)
3. Look at the table below. Complete the table by filling in the blanks with the remaining steps of
the scientific method. (5 points)
4. The experiments that lead to new discoveries are peer-reviewed by other scientists. Peer
reviews help determine two things. Name one of them. (5 points)
5. Matter is found throughout the universe. Is the water we drink considered new matter? Why or
why not? (5 points)
II Application and Critical Thinking
6. Some students studied the effect of direct sunlight on plants.
Indicate which of the following is being done in each student activity: stating the question or
problem, drawing a conclusion, forming a hypothesis, or conducting an experiment. (5 points)
Student Activity
Being Done?
Record the height of the plants growing in
the shade.
Collecting data
Ask, “How does shade affect plant growth?”
State, “Since the results show the plants did
not grow as much in the shade, we can
conclude they need sunlight to grow.”
State, “If plants need sunlight to grow, then
the plants in the shade will not grow as well
as the plants in the sun.”
Two plants are placed outdoors. One plant
is in the shade. The other plant is in the
sunlight. Observe the plant growth for one
month.
7. One theme that connects all information in biology is “stability and change.” Describe one of
the other themes that connects all the information in biology. Use an example to help explain
the theme. (5 points)
8. Technology has affected society by causing radical changes in how people live. For example,
e-mail on the computer has changed the way we communicate with the world. Describe another
example of how technology has changed how people live. (5 points)
9. Technology can bring both good and bad things. Building a vertical farm can increase food
supplies in cities (good), but it may cause unemployment in rural areas (bad). Give another
example of both the good and bad sides of a technological advancement. (5 points)
3.5.3 Test (TST): Teacher-Scored Unit Test
Biology
Points Possible:50
Test
Name: misha benhamou
Date:
In this test you will apply what you have learned in the unit. Please answer the questions
below. Submit this to your teacher when you are done.
1. Below are the results of an experiment similar to Louis Pasteur’s experiment.
Trials
Observations
Flask 1: Sealed flask of boiled meat broth
Clear; no microorganisms present
Flask 2: Open flask of boiled meat broth
Very cloudy; many microorganisms present
Flask 3: Flask of boiled meat broth with an
S-shaped tube
Clear; no microorganisms present
a) How do the results of flask 3 disprove spontaneous generation? (4 points)
b) Which part of cell theory do these results most support? (2 points)
2. Eukaryotic cells have many different specialized structures that are involved in making,
organizing, and delivering a protein molecule. Describe the four organelles that are involved and
the sequence of events of this process. Describe the role of each organelle. (Start with the
protein production in the ribosomes.) (8 points)
3. Cells are usually very small. Why is it an advantage to have many small cells instead of one
very large cell? (3 points)
4. a) What is cell differentiation? Give one example. (4 points)
4. b) Why is it dangerous to a fetus for the pregnant mother to drink alcohol? (3 points)
5. a) Why are embryonic stem cells especially useful in medical research? (2 points)
b) Why is the use of embryonic stem cells controversial? (3 points)
c) Why is it important for science and society to communicate about stem cell research? (3
points)
6. a) Explain the difference between passive transport and active transport. (2 points)
b) Give one example of a molecule using passive transport and one example of a molecule
using active transport. (4 points)
7. A cell sample was placed in saltwater. The researchers wanted to observe the effect of the
saltwater on the cell over a 90-second period.
a) Based on the information in the graph, explain what physical process causes the cell to
change size. (3 points)
b) What does this graph tell you about the concentration of salt inside the cell? (3 points)
8. Dutch elm disease affects the function of vascular tissue in trees. A tree with the disease
reacts by plugging the vascular tissue with gum. These plugs prevent the disease from traveling
up the trunk of the tree.
a) If xylem tissue is plugged by gum, what other substances are prevented from traveling up the
stem? (3 points)
b) Describe how phloem is affected if the leaves start to die off. (3 points)