Science Final Review
Quiz
•
others
•
7th Grade
•
Hard
Standards-aligned
Lynnette Skrivanek
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67 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly. What is the CONTROL GROUP?
1 paper clip
2 paper clips
3 paper clips
0 paper clips
Answer explanation
The control group is the baseline for comparison. In this experiment, the control group is the paper airplane with 0 paper clips, as it allows the student to observe the effect of adding mass without any additional weight.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which sequence of terms is in the correct order from simplest to most complex?
cells → tissues → organs → organ systems
tissues → organisms → cells → organ systems
cells → tissues → organ systems → organs
organs → organisms → organ systems → cells
Answer explanation
The correct order from simplest to most complex is: cells (basic unit of life) → tissues (groups of cells) → organs (groups of tissues) → organ systems (groups of organs). Thus, the correct choice is cells → tissues → organs → organ systems.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This structure that allows particles to enter and exit the cell is called the ______.
Cytoplasm
Cell membrane
Cell wall
Molecule
Answer explanation
The cell membrane is the structure that regulates the entry and exit of particles in and out of the cell, maintaining homeostasis. It is selectively permeable, unlike the cytoplasm or cell wall, which serve different functions.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The cell theory states that
all cells have a vacuole that contain genetic information
all living organisms are composed of cells that arise from preexisting cells
all cells regenerate and contain the same basic structures
organisms that lack certain organelles reproduce by binary fission
Answer explanation
The cell theory states that all living organisms are composed of cells and that these cells arise from preexisting cells, emphasizing the fundamental role of cells in life.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which letter indicates a cell structure that is the site of photosynthesis in plant cells?
A
B
C
D
Answer explanation
The correct choice is C, which indicates chloroplasts, the cell structures in plant cells where photosynthesis occurs. Chloroplasts contain chlorophyll, the pigment that captures light energy for this process.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Molecules are transported within animal and plant cells using a system of passageways that make up the
endoplasmic reticulum
mitochondria
ribosomes
chloroplast
Answer explanation
The endoplasmic reticulum (ER) is a network of membranes that facilitates the transport of molecules within cells. It plays a crucial role in synthesizing proteins and lipids, making it essential for cellular function.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Within a cell, DNA is mainly found in the
cell wall
plasma membrane
ribosomes
chromosomes
Answer explanation
Within a cell, DNA is primarily organized into structures called chromosomes. These chromosomes contain the genetic information necessary for cell function and inheritance, making them the correct answer.
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