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7.6.2 Part 2
Test Description: X
Instructions: Answer all questions to get your test result.
1) mitochondria
A
controls the cell/ powerhouse
B
produce energy / Brain
C
controls the cell/ Brain
D
produce energy / powerhouse
2) 29. A good hypothesis is always written in an “______________, ___________________” statement.
A
I think ...., then
B
If ...., then ....
C
I predict .... will occur
D
I predict ... then
3) 30. If a hypothesis is proven true or false, a good scientist must always explain __________.
A
when
B
what
C
who
D
why
4) 26. If you start a compost bin and you wanted to study the relationship between bacteria, a decomposer, and temperature, how would you write the problem statement on your lab?
A
If the decomposer, bacteria are present in the compost bin, then it will cause the temperature in to rise.
B
If decomposer, bacteria, are present in the compost then compost bin will decompose faster?
C
Does the decomposer, bacteria, cause the compost bin to decompose faster?
D
Does the decomposer, bacteria, cause the temperature in the compost bin to rise?
5) 25. If you wanted to start a mini compost bin in the classroom, what glassware have we used before that we could conserve, or recycle, and use again to hold the waste and observe?
A
erlenmeyer flask
B
graduated cyclinder
C
beaker
D
triple bean balance
6) nucleus
A
regulates all cell activity / brain
B
controls the cell/ powerhouse
C
produce energy / Brain
D
produce energy / powerhouse
7) 1. All matter has ____________________________________ and ______________________________________.
A
weight and area
B
Mass and volume
C
Mass and cells
D
cells and volume
8) 4. Organic compounds contain the element
A
Water
B
Air
C
Carbon
D
Oxygen
9) Which decomposers are the most abundant?
A
insects
B
bacteria
C
fungi
D
mold
10) 18. Microscopic decomposers found everywhere are called ____________________________________.
A
atoms
B
bacteria
C
fungi
D
cells
11) 1 Compounds are formed from the combination of two or more elements. Some compounds are inorganic, while other compounds are organic. Which of the following compounds is an organic compound?
A
A hydrogen chloride (HCl)
B
B sodium chloride (NaCl)
C
D water (H2O)
D
C methane (CH4)
12) 2 A student learns that gasoline contains organic compounds. Which element is present in every organic compound?
A
A carbon
B
C nitrogen
C
B hydrogen
D
D oxygen
13) 3 Which of the following statements about organic compounds is correct?
A
C Organic compounds cannot contain any carbon.
B
B Organic compounds must contain hydrogen.
C
A Organic compounds contain only carbon.
D
D Organic compound
14) 4 Which of the following is not an organic compound?
A
water
B
sugar
C
protein
D
starch
15) 5 Most molecules that contain carbon are-
A
organic compounds
B
organic elements
C
inorganic compounds
D
gases
16) 7 Which of the following statements is true of the nitrogen cycle?
A
Nitrogen is produced during photosynthesis.
B
Plants use nitrogen to make carbohydrates.
C
Condensation plays a major role in the nitrogen cycle
D
Nitrogen is released as dead plants and animals decompose.
17) 8 Water is broken down into oxygen and hydrogen during the process of –
A
respiration
B
decomposition
C
exhalation
D
photosynthesis
18) 4 A science teacher is planning a descriptive investigation for his seventh-grade science class. The students’ assignment is to observe and describe the behavior of ants gathering food for an ant colony. What combination of equipment and
A
hand lens, food, pencil, notebook, video recorder, and ant form with clear sides
B
Internet Web site describing the feeding habits of ants in captivity, notebook, pencil, printer
C
DVD copy of Antz, the animated film; note book; pen; paper
D
ant hill in the schoolyard, insect net and jar, pencil, notebook, sound recorder
19) 5 A student must report the average height of girls and the average weight of boys in her seventh grade class. Which step will allow her to make observation that will collect data needed for her descriptive investigation?
A
measure the height of each girl in her class and weight of each boy in her class
B
measure the height of an average-height girl in the class and the weight of an average-weight boy in her class
C
interview each student in her class and ask him or her to state his or her height and weight
D
research the Internet to determine the average height of seventh grade girls and average weight of seventh grade boys
20) 6 You are assigned to name organisms that live beneath a large rock. What question should you ask for his descriptive investigation?
A
Do insects prefer living beneath rocks or under decaying logs?
B
How do beetles dig holes beneath rocks?
C
Do earth worms live beneath rocks?
D
What organisms live beneath rocks?
*select an answer for all questions
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