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Dr. O's 8th Grade Final Exam Flashcards | StudBud
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Dr. O's 8th Grade Final Exam
Dr. O's 8th Grade Final Exam
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Questions
25
Answers
1
Which structure is found in plant cells but not in animal cells?
Chromosomes
Cytoplasm
Cell Membrane
Cell Wall
2
Which of the following is NOT required for photosynthesis to occur?
Carbon Dioxide
Oxygen
Water
Sunlight
3
What are the main products of photosynthesis?
Nitrogen and Water
Oxygen and Glucose
Carbon Dioxide and Glucose
Water and Oxygen
4
What is the function of a nucleus in a cell?
It regulates water balance in the cell
It controls the activities of the cell and contains genetic material
It packages and transports proteins
It provides energy for the cell through photosynthesis
5
What is the atomic number of an element based on?
The number of electrons
The number of protons
The total mass of the atom
The number of neutrons
6
Which gas do plants take in from the atmosphere for photosynthesis?
Carbon Dioxide
Hydrogen
Nitrogen
Oxygen
7
What causes the Earth's seasons?
The Earth's distance from the Sun
The tilt of the Earth's axis
The speed of the Earth's rotation
Changes in the Sun's energy output
8
Which layer of the Earth is liquid?
Inner Core
Outer Core
Crust
Mantle
9
What is a fossil?
A type of mineral
A live dinosaur
The preserved remains or traces of ancient organisms
A rock formed from lava
10
How long does evolution usually take?
A few months
Many generations over long periods of time
A few days
One human lifetime
11
How many phases of the moon are there?
8
7
6
5
12
What is Natural Selection?
Organisms better adapted to their environment survive and reproduce
A law that protects animals
A process where stronger animals always win fights
The act of humans choosing which animals survive
13
What evidence supports the theory of evolution?
Ancient myths and stories
Astrological charts
Fossils, DNA similarities, and body structures
Only weather records
14
Which of the following is a chemical change?
A rock breaking into smaller pieces
Ice melting into water
Sugar dissolving into water
A piece of paper burning
15
What does it mean when a species becomes extinct?
It evolves into another animal
It no longer exists anywhere on Earth
It becomes a fossil
It moves to a new location
16
Which organelle is responsible for making proteins in a cell?
Mitochondria
Lysosome
Vacuole
Ribosome
17
Which subatomic particles are found in the nucleus of an atom?
Electrons and Neutrons
Protons and genetic material
Protons and Neutrons
Protons and Electrons
18
Which of the following is a physical change?
Burning Wood
Rusting Metal
Melting Ice
Baking a Cake
19
What characteristic is shared by all living things?
The ability to breathe oxygen
The ability to communicate
The ability to grow and reproduce
The ability to move
20
What is responsible for the movement of Earth's tectonic plates?
Solar radiation
Convection Currents in the mantle
Gravity
Ocean Currents
21
What is the difference between prokaryotic and eukaryotic cells?
Eukaryotic cells lack organelles
Prokaryotic cells have chloroplasts and eukaryotic do not
Prokaryotic Cells are larger than Eukaryotic cells
Eukaryotic Cells have a nucleus and prokaryotic cells do not
22
Which of the following best describes how humans evolved?
They share a common ancestor with modern apes
They were created by robots
They appeared suddenly from nothing
They came from fish that learned to walk
23
What is the function of lysosomes in an animal cell?
To help in protein synthesis
To store genetic material
To digest and break down waste materials
To produce energy for the cell
24
Which of the following is the basic unit of life in all living organisms?
Atom
Tissue
Molecule
Cell
25
What is Evolution?
A sudden change in weather
The process by which species change over time
The creation of planets
The process by which rocks change form
