Flashcards in Chapter 2 - Lesson 1 Deck (30):
What kind of functions do cells have?
Making proteins and transporting substances into and out of the cell
What uses the energy in sunlight to make their food?
Plants and other organisms such as algae and bacteria
What is photosynthesis?
the process by which a cell captures energy in sunlight and uses it to make food
How do all living things obtain energy of the sunlight captured during photosynthesis?
either directly or indirectly
Who benefits indirectly from the energy of the sun?
Animals like lions.
An organism that makes its own food is called an
An organism that cannot make its own food is called
Many heterotrophs obtain food by
eating other organisms
Some heterotrophs such as funghi obtain their food by
absorbing their food from other organisms
During photosynthesis, some plants and other organisms convert carbon dioxide and water into ______ and _______.
Oxygen and Sugars
During photsynthesis, some plants and organisms convert ______ and ______ into oxygen and sugars.
carbon dioxide and water
What are the 2 stages of photosynthesis?
Capturing the Sun's energy
Using energy to make food
What are pigments?
colored chemical compounds that absorb light
What is the main photosynthetic pigment in chloroplast?
green organelles inside plant cells
What does Chlorophyll do?
it captures light and uses it to power the second stage of photosynthesis
The cell needs 2 raw materials for the second stage of photosynthesis. What are they?
carbon dioxide CO2
How does carbon dioxide enter the plant?
through small openings on the underside of the leaves called stomata
How does water get into the plant?
Absorbed by the roots from the soil and moves through the stem and then leaves
Once in the leaves, water and carbon dioxide move into
Once inside chloroplasts, water and carbon dioxide go through a series of
The chemical reactions in photosynthesis are powered by
energy captured in the first stage of photosynthesis
What is the photosynthesis equation?
6 CO2 + 6 H20 ---------> C6H12O6 + 6 O2
carbon dioxide + water ---sunlight---> a sugar + oxygen
One product of photosynthesis is
a sugar that has 6 carbon atoms C6H12O6
What happens to the product oxygen in photosynthesis?
exits the leaf through the stomata
The sugar produced in photosynthesis is either
used to carry out functions or stored for later use
a compound produced by sugar molecules