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Life Science Midterm Review #2
Test Description: Review of multiple topics for the 7th grade Life science midterm
Instructions: Answer all questions to get your test result.
1) Which of the following organelles is present ONLY plant cells?
A
mitochondria
B
lysosomes
C
cell membrane
D
chloroplasts
2) You are viewing a specimen through a microscope with a 10X eye piece using the low power (10X) magnification. What is the total magnification of the specimen you are viewing?
A
200X
B
1010X
C
20X
D
100X
3) There are three major types of interactions; competition, predation, and
A
limiting factors
B
niche
C
biotic factors
D
symbiosis
4) Humans have the most impact on the environment because...
A
they are able to change habits more easily and often then other species.
B
they don't learn anything about the environment around them.
C
they only live in one place on the planet.
D
they only do positive to help the environment.
5) An ecosystem can only support a certian amount of organisms, we call this its
A
carrying capacity
B
recycling
C
sucession
D
life span
6) Do all cells have a cell membrane?
A
No, only animal cells have a cell membrane.
B
No, only plant cells have a cell membrane.
C
Yes, both plant and animals cells have a cell membrane.
D
none of these
7) Which organelles are only present in plant cells?
A
ribosomes and mitochondria
B
chloroplast and cytoplasm
C
cell wall and chloroplasts
D
cell membrane and cell wall
8) Cell Theory states that
A
all living things are made up of at least one cell.
B
living things must be multicellular (have many cells)
C
living things can spontaneously spring to life from dead things
D
all cells come from bacteria
9) Some bacteria are made of only one cell, we call this
A
there are no such thing as single celled organisms
B
Unicellular
C
none of these
D
Multicellular
10) We measure the volume of liquid in
A
a ruler
B
a graduated cylinder
C
a box
D
on a digital balance
*select an answer for all questions
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