A
What are the products of photosynthesis?
glucose (sugars) and oxygen
What are the raw materials for cellular respiration?
oxygen and glucose
Under which of the following conditions is lactic acid fermentation most likely to occur?
a. a very fast run c. sleeping
b. a long walk d. playing video games
very fast run
Photosynthesis and respiration form a cycle that keeps the levels of __________ and carbon dioxide fairly constant in our atmosphere.
oxygen
During what stage of the cell cycle does replication occur?
interphase
In what organelle does photosynthesis occur?
chloroplast
How does photosynthesis benefit heterotrophs?
It creates food that they can eat.
Plants make their own food using energy that comes from the ____________________.
sun
The raw materials for _____________ are the same as the end products of photosynthesis.
cellular respiration
A cell makes a copy of its DNA during the stage of the cell cycle called _________________.
interphase
What is copied during replication?
When muscle cells run low on oxygen, _______________________ fermentation takes place.
lactic acid
What happens to glucose during cellular respiration?
Glucose is broken down, releasing energy.
heat, ATP, water, carbon dioxide
Plants use energy from the sun to produce oxygen and ___________________.
glucose
In what organelle does cellular respiration occur?
mitochondria
The final stage of the cell cycle, during which the cytoplasm divides, is called ____________________.
cytokinesis
What are the reactants of photosynthesis?
sunlight, carbon dioxide, and water
During what stage of the cell cycle does the nucleus divide to form 2 nuclei?
mitosis
What are chemicals that absorb sunlight called?
pigments
The regular cycle of growth and division that cells undergo is called
the cell cycle
What is the green pigment found in plant cells?
chlorophyll
What forms around the chromatids during mitosis?
nuclear membrane
Almost all living things depend on the process of ____________________ to supply them with the energy they need.
photosynthesis
Carbon dioxide enters plants through the
stomata