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Science Exam 4th

What are the products of photosynthesis? Oxygen and sugars.
What happens during photosynthesis? The cell uses the energy in sunlight to make food.
How does photosynthesis benefit heterotrophs? It creates food that they can eat.
The stage of respiration that releases most of the energy in glucose occurs in the.. Mitochondria.
How are photosynthesis and respiration related? They have opposite equations.
Mitosis is the stage of the cell cycle during which... The cell's nucleus divides into two new nuclei.
During DNA replication, adenine (A) always pairs with... Thymine (T)
Each rung of DNA ladder is made of... A pair of nitrogen base.
If a Kestrel eats a mouse that eats grass, the kestrel is a... Second-Level Consumer.
The many overlapping food chains in an ecosystem make up a(n) Food web.
In an energy pyramid, which level has the most available energy? Producer Level.
Some bacteria that fix nitrogen live in bumps on the road of certain plants. These bumps are called... Nodules.
The study of where organisms live is called.. Biogeography.
The typical weather pattern in an area over a long period of time is called... Climate.
The first organism in a food chain is always a... Producer.
Which ecosystem is found where the fresh water of a river meets the salt water of the ocean? Estuary.
Fossil Fuels are considered nonrenewable resources because they... Take hundreds of millions of years to form.
what is the most widely used source of renewable energy in the world today? Hydroelectric power.
The spitting of an atom's nucleus into two smaller nuclei is called... Nuclear Fission.
The combining of two atomic nuclei to produce one larger nucleus is called... Nuclear Fusion.
Efficiency is... The percentage of energy that is actually used to preform work.
What did Gregor Mendel do to study different characteristics in his genetics experiments? He cross-pollinated plants.
Factors that control traits are called... Genes.
If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probability that an offspring will have black fur? 100%
A purebred chicken with white feathers is crossed with a purebred chicken that has black feather. Each of their offspring has both black and white feathers. Why does this happen? The alleles for feather color are neither dominant nor recessive.
What happens during meiosis? Chromosome pairs separate and are distributed into new sex cells.
Created by: TaccyTricia