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25 terms

Review for Science Test

Goes over all of the notes for Ms.Bloch
STUDY
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Define Photosynthesis
The process by which cells capture energy in sunlight and use it to make food.
Write the balanced chemical equation for photosynthesis.
6CO2 + 6H2O------ C6H12O6 + 602
(light)
Define the terms autotroph and neterotroph
hetrotroph-cannot make their own food
autotroph-can make its own food
Define respiration
The porcess by which cells "with draw" energy from gluclose
Write the blanced chemical equation for respiration
C6H12 + 6OS-------6CO2 + 6H2O + energy (ATP)
Describe where in the cell respiration occurs
it occurs in the cytoplasm and the mitochondra
define fermintation
An energy releasing process that does not require oxygen
List three reasons why the cell cycle is important for your body
Examples: let's you grow, keeps your cells from dying, repairs cuts and other wounds
List the three stages of the cell cycle
Interphase, Mitosis, Cytokinesis
State three events that occur during the first stage of the cell cycle
Growth, DNA Replication, Preparation for Division
Define replication in reference to DNA
The cell makes a copy of it's DNA inside its nucleaus
Describe the structure of DNA
The sructure of DNA is much like a ladder that is twisted with matching chemicals
List the four nitrogen bases according to their paring pattern
Thymine-Adenine
Guanine-Cytosine
Name the four phases of the second stage of the cell cycle, which is called Mitosis
Prophase, Metaphse, Anaphase, Teophase
Explain what happens during the thrid stage of the cell cycle, called Cytokinesis
During Cytokinesis, the cytoplasm divides, distributing the organelles into each of the two ne cells
Define cancer
is a disease in which cells grow uncontrollably, damaging cells and the rest of the body.
Describe how cancer begins
DNA in the cell gets damaged causing a mutation and the cell does not die out
Explain how cancer spreads
one cell develops and a tumor forms then the cells enter the blood stream spreadind all over the body
List three ways cancer can be treated
radiation, surgery, chemotherapy(drugs)
List two health habits that can prevent cancer
not smoking eating healthy
carcinogen
something that causes cancer
Biopsy
remove part of tissuse and test it to see if it is benign or malignant
malignant
cancerous tumor
benign
non-cancerous tumor
metastasis
cancer spreading through the bloodstream to other parts of the body