Biology3

18 cards·by ahobbs

How do greenhouse gases contribute to global warming?

It reflects back to Earth so cannot escape to space

Why does water have a strong resistance to changes in temperature?

H bonds between water molecules make it more cohesive than most liquids

Purpose of electron transport chain

to carry electrons each step at lower energy level

total amount of energy associated with the movement of atoms and molecules in a substance

Heat

What happens in reaction center?

light energy, chemical energy when light energy excites an electron

How are electrons replaced in photosystem 2?

Splitting water

What is antenna molecules and what is their function?

chlorophyll a and accessory pigments, gather light energy and transfer chlorophyll a to reaction ceenter

What are fossil fuels and why are they called that?

Petroleum, coal, natural gas- from remains of ancient plant and microorganisms

What molecules is the energy "cash"for the cell?

ATP

What happens when something appears White? Black? Green?

reflected, absorbed, reflected

Site of photosynthesis

Chloroplasts

Natural sources of CO2 to atmosphere

respiration, decomposition, fires, volcanoes

Intensity of heat

Temperature

Living part ofplanet

Biosphere

Why do ice cores give us records of atmospheric gasses from the past?

one measure

3 greenhouse gasses

Carbon dioxide, methane, nitrous ooxide

How does burning of fossil fuels contribute to global warming?

increases CO2 which increases global warming

How does CO2 in today's atmosphere compare to other times in history?

it is highest in the air more than anytime before, increases 3bilimetirc tons per year