Exam (elaborations)
Unit 5-Cell Processes Detailed Questions and Expert Answers 2024
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Unit 5-Cell Processes Detailed Questions and Expert Answers 2024
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Unit 5-Cell ProcessesActive Transport - ANS the movement of chemical substances, usually across the
cell membrane, against a concentration gradient; requires cells to use energy
ATP - ANS adenosine triphosphate, an organic molecule that acts as the main
energy source for cell processes; composed of a nitrogenous base, a sugar, and
three phosphate groups
Cell Cycle - ANS the life cycle of a cell; in eukaryotes, it consists of a cell-growth
period in which DNA is synthesized and a cell-division period in which mitosis takes
place
Cellular Respiration - ANS the process by which cells produce energy from
carbohydrates; atmospheric oxygen combines with glucose to form water and
carbon dioxide
Crossing Over - ANS the exchange of genetic material between homologous
chromosomes during meiosis; can result in genetic recombination
Diffusion - ANS the movement of particles from regions of higher density to
regions of lower density
Exon - ANS the portion of the DNA sequence in a gene that contains the sequence
of amino acids in a chain and the beginning and the end of a coding sequence
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