Ch 2, 7th Grade Question Preview (ID: 60130)
Cells.
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An instrument that makes small objects look larger
a) microscope
b) spectroscope
c) telescope
d)
Who said that all plants are made of cells?
a) Matthias Schleiden
b) Theodor Schwann
c) Rudolf Virchow
d) Robert Hooke
The condition of things appearing larger than they are
a) magnification
b) resolution
c) classification
d) focus
Compound microscopes have more than one lens.
a) true
b) false
c)
d)
By using compound microscopes, scientists can obtain pictures of objects that are too small to be seen with electron microscopes.
a) false
b) true
c)
d)
Made mostly of a strong material called cellulose, this helps protect and support the cell.
a) cell wall
b) cell membrane
c) nucleus
d) lysosome
RIbosomes are made in the
a) nucleolus
b) mitochondria
c) endoplasmic reticulum
d) Golgi apparatus
Lysosomes...
a) break down old cell parts
b) make energy from food
c) capture energy from sunlight
d) all of the above
To be specialized means to
a) do one kind of job
b) do all the jobs
c)
d)
A group of similar cells that work together to perform a specific function
a) tissue
b) cell
c) organ
d) organ system
When two or more elements combine chemically, they form a
a) compound
b) element
c) molecule
d) atom
Energy-rich organic compounds made of the elements carbon, hydrogen, and oxygen. They can be sugar or starch
a) carbohydrates
b) lipids
c) protein
d) nucleic acid
Cells store energy from ___ for later use.
a) lipids
b) carbohydrates
c) nucleic acids
d) proteins
A group of proteins that speed up chemical reactions that are necessary for life
a) enzymes
b) carbohydrates
c) exocytosis
d) fats
Contain the instructions that cells need to carry out all the functions of life
a) nucleic acids
b) proteins
c) lipids
d) carbohydrates
How much of the human body is water?
a) 2/3
b) 1/3
c) 3/4
d) 2/5
Cell membranes are made of
a) a double layer of lipids
b) a single layer of lipids
c) a double layer of proteins
d) a single layer of carbohydrates
Which type of transport requires energy?
a) endocytosis
b) diffusion
c) osmosis
d) facilitated diffusion
Which type of transport requires energy?
a) osmosis
b) exocytosis
c) endocytosis
d) plasmosis
In active transport, molecules move from areas of low concentration to areas of high concentration.
a) true
b) false
c)
d)
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