Pretest Flashcards
What reproduces itself, has 2 membranes, and makes its own protein?
Mitochondria
what are photosynthetic organisms that use light energy to drive synthesis called?
Photoautotrophs
How many ATPs does 1 glucose molecule produce?
38 ATPs
What does sugar generate?
ATPs
What is electron transfer?
Energy
The 4 major classes of biological macromolecules is…
Lipids, protein, carbohydrates, and nucleic acid
Animals are…
Heterotrophs
What are heterotrophs?
Organisms that need food in a ready-made state and are motile
Inorganic compounds can be used by…
Plants
Plants are…
Autotrophs and sessile
Plant cell walls are made out of…
Cellulose
DNA contains…
Code for protein
Fungi are…
Decomposers
What determines rate of fall?
Air resistance
What is the regulatory part of the brain?
Hypothalamus
What in red blood cells make them red?
Iron
The circumference of the earth is how long?
24,000 miles
Orbits are…
Revolutions
Who named the months?
The Romans
What did the Africans measure the sun with?
Tools like domes and sundials
What results in 90° sun rays?
Heating
What results in oblique sun rays?
Cooling
How long is the lunar cycle?
28 days
Tides are caused by what?
The moon
Tides happen about every…
12.5 hours
Phase changes are the…
Changing portion of luminated surface as moon revolves
One side of the moon will forever…
Face the earth
Photoperiodism is…
A response of an organism to seasonal changes in day length
Why do leaves change colors?
Plants stop producing chlorophyll because of lack of sunlight
Why don’t trees keep their leaves?
Leaves would freeze, trees would weigh the tree down, and trees could die from lack of water
Most people dying of HIV and Aids were because of…
Blood transfusions
What problem do hemophiliacs have?
Their blood can’t clot
HIV can lead to…
Aids
What cells does HIV attack?
T-cells
What cells replicate the HIV virus?
T-cells
