Cells 1
Particles move from ________________ areas to areas less ___________________. S1
Particles move from crowded areas to areas less crowded.
All organisms need _______________ to live. S1
water
Small particles are able to __________ through the cell membrane. S1
slip
The life cycle of a cell is known as the _______ _________. S3
Cell cycle
When you feel hungry, it is your body telling you that your cells need _______________. S2
Carbon dioxide is a _____________ product of cellular respiration. S2
waste
Other particles must travel through _______________ "doorways" in the cell membrane. S1
protein
There are __________ phases of mitosis that a cell goes through in producing new cells. S3
four
_____________ transport is the diffusion of particles through the proteins without use of energy. S1
Passive
______________ transport is the movement of particles against the normal direction of diffusion and requires energy. S1
Active
The process of ___________________ is light from the sun changed into food for energy. S2
photosynthesis
Fermentation occurs in your _______________, which can lead to muscle fatigue after strenuous exercise. S2
muscles
The cell cycle begins when the cell is ____________ and ends when the cell ______________ and forms new cells. S3
formed ; divides
Plants use the _______________ captured from photosynthesis to change carbon dioxide and water into food. S2
energy
The food you eat has to be broken down so the energy is contains can be ________________ into a form for the cells to use. S2
converted
Breathing gives your cells oxygen needed to perform ____________ _______________. S2
cellular respiration
During cellular respiration, ____________ is broken down into carbon dioxide and water and energy is released. S2
food
The number of chromosomes differs from one organism to another, humans have ______ chromosomes. S3
46
The cell membrane has two ways of moving larger particles; _____________ and ________________ S1
endocytosis and exocytosis
The result of mitosis is two ______________ cells that are identical to the original cell that they were formed from. S3
identical
The process of fermentation is used when muscle cells can't get the _____________ needed to produce ATP by cellular respiration. S2
oxygen
A copy of the cell's DNA must be made for the new cells and is organized into structures called ______________. S3
chromosomes