What is the chromosome theory of inheritance?

What does the notation TT mean to geneticists?

A DNA molecule is shaped like a

Together, respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere

What happens during photosynthesis?

A substance that cannot be broken down into simpler elements is a(n)

Which term refers to the diffusion of water molecules through a selectively permeable membrane?

Why is water important for a cell?

Which organelle is the control center of a cell?

Which of the following statements is part of the cell theory?

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