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Ms.Junk - Holt Science & Techn
Ms.Junk - Chap 4
35
Science
7th Grade
01/28/2009

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Term
During the process of diffusion
Definition
particles omove from areas of higher concentration to lower concentration
Term
Cellular respiration is the process by which
Definition
cells use oxygen to release energy from food
Term
cells need to produce new cells in order to
Definition
replace cell that have died
Term
during cytokinesis in plant cells
Definition
a cell plate forms to separate the two new cells
Term
what must organisms be able to obtin in order to survive
Definition
energy and raw materials
Term
when particles travel from an area of high concentration to an are of low concentration, its is called
Definition
diffusion
Term
a cell does not need to use energy during
Definition
diffusion
Term
when weather diffuses into or out of a cell, it is called
Definition
exocytosis
Term
passive trabsport occurs when small particles move from
Definition
areas of highter concentration to areas of lower concentrations
Term
why does a plant need to produce glucose
Definition
in order to obtain energy
Term
fermentation occurs when a cell can't get
Definition
oxygen neeeded for cellular respiration
Term
food particles move through a cell membrane without using energy in a process called
Definition
passive transport
Term
when wilted celery is soaked in water, it becomes crisp again due to
Definition
osmosis
Term
which of the following is a product of photosynthesis
Definition
glucose
Term
what do materials go in and out of an organism's cell through
Definition
cell membranes
Term
moving materials through a cell membrane by active tranport requires the use of
Definition
energy
Term
when a human feels hungry it is because his or her cells need
Definition
energy
Term
most complex organisms obtain energy through
Definition
cellular respiration
Term
in one kind of fermentation that occurs in muscle fatigue is caused by the production of
Definition
lactic acid
Term
what part of a cell uses cellular respiration to relase energy stored in food
Definition
mitochondria
Term
plants produce thier own food by the process of
Definition
photosynthesis
Term
human body cells have 23 pairs of
Definition
homologous chromosmes
Term
the process of chromosome separation in eukaryotic cells is called
Definition
mitosis
Term
pairs of similar chromosomes are celled
Definition
homologous chromosomes
Term
cells divide into two cells by the process of
Definition
mitosis
Term
when chromosomes are copied, the two copies are called
Definition
chromatids
Term
in the process of_______ cells bring in large particles
Definition
endocytosis
Term
in the process of________ cells get rid of large particles
Definition
exocytosis
Term
when oxygen is used to break down food to release energy, it is called______
Definition
cellular respiration
Term
breaking down food for energy without using oxygen is_____
Definition
fermentation
Term
how do prokaryotic cells make more cells?
Definition
binary fission
Term
explain how oxygen in obtained by most by complex organisms and thenused during cellular respiration
Definition
oxygen is obtained by animals through breathing. the oxygen is then combined with glucoes within cells during cellular respiration in order to produce the energy the animal needs to grow, repair damaged cells, and replace dead cells
Term
what would happen to a cell if it was not able to get rid of wastes
Definition
if a cell could not get rid of wastes, it would with toxins, or dangerous substances, that could damage or kill the cell
Term
what does copying chromosomes prior to cell division ensure
Definition
that each new cell will be an exact copy of its parent cell
Term
what is mitosis
Definition
mitosis is a process in eukaryotic cells in which the cell divides and produces two new cells, each with a single nuclei and the same number of chromosomes
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