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Part 2 / S.C. End Of Year 7th-grade Science Review
Test Description: Part 2 / S.C. End of Year 7th-grade Science Review
Instructions: Answer all questions to get your test result.
1) Parasitism
A
Both Benefit
B
Both Benefit
C
One Benefits, One Suffers
D
One benefits, One not affected
2) What percent of energy is transferred between levels of an energy pyramid? (trophic levels)
A
90%
B
60%
C
10%
D
30%
3) When the birth rate is higher than the death rate, the the population’s growth rate
A
decreases
B
increases
C
stays the same
4) In a food web the arrow points to the animal
A
gets eaten
B
runs scared
C
that eats the prey
D
is the apex predator
5) What type of soil is best for growing plants?
A
loam
B
Clay
C
silt
D
sand
6) Multiple populations in the same area are called a
A
habitat
B
biosphere
C
population
D
community
7) The capacity of the soil to allow fluids to pass through it?
A
saturation
B
osmosis
C
carrying capacity
D
permiability
8) Organisms that enter a new habitat and cause a negative effect are called?. (Ex. kudzu fire ants)
A
intruders
B
species
C
invasive species
D
unwelcomed guests
9) In mice, B represents the allele for black coat and b represents the allele for white coat. Black is dominant over white. If a mouse has the genotype Bb, what is the mouse’s phenotype?
A
black
B
white
C
mixed white and black
D
grey
10) Cell Membrane
A
Controls what leaves and enters the cell
B
The control center of the cell
C
cleans up old organelles and waste
D
powerhouse of the cell
11) Brain of the cell, controls cell function
A
mitochondria
B
Vacuole
C
Nucleus
D
cytoplasm
12) In charge of cellular respiration, powerhouse of the cell
A
mitochondria
B
Vacuole
C
cytoplasm
D
Nucleus
13) What will happen if an ecosystem reaches its carrying capacity?
A
immigration rate may increase.
B
death rate may rise.
C
death rate may fall
D
birth rate may rise significantly
14) What is responsible for the inheritance of a trait, like eye color or blood type in humans?
A
codon
B
gene
C
nucleotide
D
chromosome
15) What level of organization contains both biotic and abiotic factors?
A
organism
B
habitat
C
community
D
ecosystem
16) Which two systems work together to transport blood and oxygen through the body?
A
circulatory, respiratory system
B
respiratory system, digestive
C
circulatory, nervous
D
respiratory system, digestive
17) Molecules are atoms that are held together by _________ bonds
A
chemical
B
compound
C
atoms cannot be held together
D
physical
18) What type of change is a rusting pipe undergoing?
A
No change
B
a chemical change
C
a physical change
D
The change can be undone
19) Which cells have a membrane bound nucleus?
A
Prokaryotic
B
virus
C
Eukaryotic
D
bacteria
20) What would happen to a primary consumer if the producer gets destroyed?
A
The primary consumer would start eating animals
B
it would have an immediate impact on the food chain
C
no affect
D
it would be the last on the food chain to be affected
*select an answer for all questions
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