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7th Unit 3 Cells and Organelles Flashcards | StudBud
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7th Unit 3 Cells and Organelles
7th Unit 3 Cells and Organelles
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Life Science Cells organelles
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Answers
1
Whatis the lowest level of organization in a tissue?
a cell
a molecule
an atom
an organ
2
Whichcellular structures are found in plant cells but NOT in animal cells?
chloroplast and cell wall
mitochondria and ribosome
golgi apparatus and vacuole
endoplasmic reticulum and nucleus
3
Whichof the following is NOT part of the cell theory?
allliving things are made of cells
cellsare the units of structure for all living things
cells can be seen through a microscope
cellscome from other cells
4
Whatis the function of the chloroplast of a plant cell?
itprotects and supports the cell
it traps energy and uses it to make food
itcontrols what enters and leaves the cell
it packages andtransports proteins
5
Observe a leaf and a rock with a microscope Which part of the celltheory are you investigating?
cellscome from pre-existing cells
cellscan be seen only with a microscope
moleculesare atoms bonded together
organisms are made up of cells
6
Whichorganelle is the control center of a cell?
chloroplast
mitonchondria
ribosome
nucleus
7
Which part of the cell theory incorporates the idea that can carry all of life functions?
newcells can be produced from pre-existing cells
cellscan be seen only with a microscope
onlyplants and animals are composed of cells
cells are the basic unit of life
8
Asubstance that cannot be broken down into simpler elements is a(n)
carbohydrate
particle
compound
element
9
Whichorganelle is produces proteins in a cell?
chloroplast
ribosome
nucleus
mitochondrion
10
Whichtool could help you see a plant cell?
a microscope
a hand lens
an electromagnet
a filter
11
In amulticellular organism, which of the structures would be present in the greatest number?
cells
organs
organ system
molecules
12
Whichof the following statements is
true
about all scientific theories?
Scientific theories are based on large amounts of evidence.
scientific theories can become scientific laws
Sci theories are widely accepted right away
Scientifictheories are based on individual scientists.
13
What type of structure the skin represents?
theskin works independently of other body systems
the skin is made up of different tissues
theskin is not made of cells
theskin is not an organ
14
Whydo you need to drink more water when you are hot and perspiring?
soyou won’t wilt like a plant does
to restore the water needed for cell functions
toget more vitamins
becauseit makes you hungry
15
Unlikethe cell wall, the cell membrane
found on all cells
producesenergy for the cell.
protectsthe nucleus with a rigid layer of cellulose.
is made of chromatin
16
Whatdo a bacterial cell, a plant cell, and a nerve cell have in common?
flagella
endoplasmicreticulum
cellwall and nucleus
cytoplasm and cell membrane
17
What is the process where substances move from areas of high concentration to low concentration
diffusion
reproduction
DNA replication
cellular respiration
18
Whatis total magnification of a microscope with two lenses with one lens 30 and the other 15?
15
450
30
45
19
Whichof the following
best
describes thefunction of mitochondria?
Theystore energy from sunlight.
Theystore energy from food molecules.
convert energy from food molecules into energy cell can use
Theyproduce nucleic acids that release energy
20
Whichof the following best represents the levels of organization that form thebrain?
molecules > organ > tissues > cells> organism
organism > organ system > organ >molecules > atoms
tissues > cells> atoms > organ > organ system
atoms > molecules >cells > tissues > organ
21
Whatis the basic unit of structure and function in a living thing?
a cell
an organ system
a tissue
an organ
22
Whatdoes the term
resolution
refer to?
how well structures close together can be distinguished
howlarge an image can be
howmany lenses a microscope uses
howmuch light is needed to see an image