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True-breeding organisms consistently produce offspring of a different phenotype than themselves over many generations through self-pollination.

If a cell receives a go-ahead signal at the G1 checkpoint, it will usually complete the S, G2, and M phases and divide.

Which of the following acts as a carrier of electrons and hydrogen ions, providing the reducing power needed for the Calvin cycle?

Crossing over occurs during _____.

A ____ organism has one dominant allele and one recessive allele for a trait.

Which transport mechanism can move large molecules in and out of the cell?

In which step of aerobic respiration is glucose oxidized into two molecules of pyruvate?

Changes in temperature or pH will not cause an enzyme to be denatured.

You observe a Paramecium under a microscope. It is moving many structures on its cell surface in a back-and-forth beating power, similar to the oars of a boat, causing itself to move itself forward. What are these motile structures called?

Which organelle is the site of cellular respiration, the process that uses oxygen to generate ATP?