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Final Exam Review 2021
Test Description: Review for final exam.
Instructions: Answer all questions to get your test result.
1) Protons have a _______________ charge.
A
neutral
B
negative
C
positive
2) When the birth rate is higher than the death rate, the population's growth rate _______.
A
increases
B
decreases
C
stays the same
3) What type of organism would be at the top of the energy pyramid?
A
carnivores
B
producers
C
decomposers
4) The top of the soil profile is mostly composed of ___________________________
A
organic matter
B
parent material
C
rocks
5) Neutrons have a __________________ charge.
A
negative
B
neutral
C
positive
6) How can mixtures be separated?
A
filter
B
physically
C
by pouring
7) The excretory system rids waste, such as _____________, which is stored in the bladder until ready for release.
A
solid waste
B
urine
C
carbon dioxide
8) Organisms that enter new habitat and causes a negative effect. Ex. kudzu and fire ants
A
predator
B
prey
C
invasive species
9) What is responsible for the inheritance of a trait, like eye color or blood type in humans?
A
genes
B
traits
C
cells
10) What type of change is a rusting pipe undergoing?
A
physical change
B
chemical change
11) What is the function of the cell membrane?
A
protects the cell
B
give the cell shape
C
controls what enters and leaves the cell
12) Which cells have a membrane bound nucleus?
A
Eukaryotic cells
B
Prokaryotic cells
13) Cell organelle thats in charge of cellular respiration and is the powerhouse of the cell.
A
mitochondria
B
nucleus
C
cytoplasm
14) Molecules are atoms that are held together by ________________ bonds.
A
mixture
B
chemical
C
physcial
15) Which two systems work together to transport blood and oxygen through the body?
A
respiratory and circulatory system
B
circulatory and digestive system
C
muscular and respiratory
16) Radiation, chemical agents, and viruses can all cause what?
A
inversions
B
duplications
C
mutations
17) What type of change is a change in state, such as water freezing?
A
physical change
B
chemical change
18) In a chemical reaction the mass of the reactants must ___________________ the mass of the products.
A
replace
B
eliminate
C
equal
19) What is the best soil for growing plants?
A
loam
B
silt
C
clay
20) What percent of energy is tranferred between levels of an energy pyramid?
A
10%
B
20%
C
15%
*select an answer for all questions
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