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What protease (protein that is an enzyme) is absent or found in only small amounts with many people who have cancer?
p53
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Do viruses fit the definition of a living organism?
No.
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Can a virus replicate itself?
No. (needs a host cell)
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What is a benign tumor?
uncontrolled cell division, no adverse affects (malignant has adverse affects)
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Are oncogenes "good"? why?
No they are cancer
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What does the term "metastasized" mean?
abnormal cells have migrated and there has been tissue invasion
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About 90% of all lung cancer is preventable.
TRUE. (smoking)
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What does the term "carcinogen" mean?
causes cancer
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What is the most common form of cancer in humans in the U.S.?
skin cancer
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What can cause diseases AND cancer?
HPV
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Ultraviolet light can cause skin cancer by damaging the cells' DNA. What change occurs?
bonds adjacent pairs of thymine
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What are three ways carcinogens get into humans?
skin, inhalation, digestion
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What kind of cancer is very common in men, but never occurs in women?
prostate
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Can men get breast cancer?
YES.
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Smoking is responsible for about 30% of all cancers in the U.S.?
TRUE
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Carcinogens are found in tiny amounts all around us, including many of our food.
True
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A fast growing "mole" on your skin should be check out immediately, especailly if it shows what four characteristics? (ABCD)
Asymmetrical, Border irregularity, Color uneven, Diamter
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Bacteria are the oldest organisms on Earth. Did the archae or the urbacteria likely give rise to protistans, fungi, animals, and plants?
archae
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About how fast do bacteria divide?
20 minutes
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Can fungi kill bacteria? Can bacteria kill fungi?
Yes. Yes.
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When told to take an antibiotic for 10 days why is it foolish to stop after 5 days?
you only kill the weak bacteria, the strong bacteria build an immunity
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What shape is a coccus bacteria?
round (sphere)
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what shape is a spirillium?
Rod
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what shape is a bacillus?
spiral
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Bacteria are diploid and get one chromosome from each parent?
False. (virus don't have parents)
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As a group, bacteria have many diverse ways of getting nutrition for themselves?
True.
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Bacteria are a problem mostly when they become a colony of millions.
True.
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What are the two main types of structures that bacteria may have to help them move about?
flagellum and cillia
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what are the major ways that antibiotics kill bacteria?
stop cell wall formation during mitosis
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How many bacteria do some people have in their mouths?
over 600
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what was the spirillum disease that Columbus took back to Europe?
syphilis
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What were some of the crop plants that Columbus took from the Americas to Europe?
maize and sugarcane
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What is one of the major diseases for which bacterial spores are stockpiled for use in biological warfare?
anthrax
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Ruminant animals can actually manufacture theri own animo acids without any help.
True
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Scientific evidence suggest that which kingdom gave rise to plants, animals and fungi?
protistas
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Azospirillum bacteria cause syphilis?
False. fixes nitrogen in corn
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Why do some farmers sprinkle bacteria onto their stored green silage?
to speed up the process
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Photosynthesizing bacteria in oceans created most of the oxygen we breathe?
True (70%)
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Being a very diverse group, many protistan organisms can tolerate arid conditions?
False.
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Some protistas ingest food and some photosynthesize.
True.
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Is an amoeba a plant of animal?
Protista
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The blue whale is the largest organism on Earth.
False
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Ocean kelp is the largest organism?
True
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_____ is the base of the food web of the sea.
plankton
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What is "pseudopodium"? What category of organisms may have these?
false foot, protistas
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What was the name of the disease responsible for the great Irish famine of the 1840s?
Phytopphthora infestans
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The organism that caused the Irish potato famine was a fungus?
False. protista (does not have chitin)
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What is the name of the small, tube-liked threads on a fungus?
hyphae
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What is a mycelium?
a network of hyphae
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A lichen is made of fungus and what else?
photo symbiot; usually algae
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yeast is a multi-celled organism
false, single
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