Part 2 / S.C. End Of Year 7th-grade Science Review Question Preview (ID: 47158)
Part 2 / S.C. End Of Year 7th-grade Science Review.
TEACHERS: click here for quick copy question ID numbers.
Parasitism
a) One Benefits, One Suffers
b) Both Benefit
c) One benefits, One not affected
d) Both Benefit
What percent of energy is transferred between levels of an energy pyramid? (trophic levels)
a) 90%
b) 60%
c) 30%
d) 10%
When the birth rate is higher than the death rate, the the population’s growth rate
a) increases
b) decreases
c) stays the same
d)
In a food web the arrow points to the animal
a) that eats the prey
b) gets eaten
c) runs scared
d) is the apex predator
What type of soil is best for growing plants?
a) Clay
b) loam
c) silt
d) sand
Multiple populations in the same area are called a
a) habitat
b) community
c) population
d) biosphere
The capacity of the soil to allow fluids to pass through it?
a) saturation
b) carrying capacity
c) permiability
d) osmosis
Organisms that enter a new habitat and cause a negative effect are called?. (Ex. kudzu fire ants)
a) intruders
b) species
c) unwelcomed guests
d) invasive species
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) white
b) black
c) mixed white and black
d) grey
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
Brain of the cell, controls cell function
a) Nucleus
b) cytoplasm
c) mitochondria
d) Vacuole
In charge of cellular respiration, powerhouse of the cell
a) Nucleus
b) mitochondria
c) Vacuole
d) cytoplasm
What will happen if an ecosystem reaches its carrying capacity?
a) birth rate may rise significantly
b) immigration rate may increase.
c) death rate may rise.
d) death rate may fall
What is responsible for the inheritance of a trait, like eye color or blood type in humans?
a) chromosome
b) gene
c) codon
d) nucleotide
What level of organization contains both biotic and abiotic factors?
a) ecosystem
b) habitat
c) community
d) organism
Which two systems work together to transport blood and oxygen through the body?
a) respiratory system, digestive
b) circulatory, respiratory system
c) respiratory system, digestive
d) circulatory, nervous
Molecules are atoms that are held together by _________ bonds
a) physical
b) chemical
c) atoms cannot be held together
d) compound
What type of change is a rusting pipe undergoing?
a) No change
b) a physical change
c) a chemical change
d) The change can be undone
Which cells have a membrane bound nucleus?
a) Prokaryotic
b) bacteria
c) Eukaryotic
d) virus
What would happen to a primary consumer if the producer gets destroyed?
a) it would have an immediate impact on the food chain
b) no affect
c) it would be the last on the food chain to be affected
d) The primary consumer would start eating animals
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