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7 questions
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- Q1A cell membrane has a double layer of molecules. These molecules are made up of a phosphorous-containing "head" and two long, fatty acid "tails". Which of the following BEST explains why the molecules are classified as lipids?they contain phosphorousthey form a double layerthey are made up of fatty acidsthey are found in the cell membrane30sSB1a
- Q2Why do eukaryotic cells require mitochondria?to release stored energy for cell activitiesto break down cell debris for recyclingto control division for cell reproductionto package materials inside cells for transport30sSB1a
- Q3Which of the following organelles use carbon dioxide to produce sugars?vacuolesribosomeschloroplastsmitochondria30sSB1a
- Q4Which statement about plant and animal cells is true?Plant cells have chloroplasts and mitochondria; animal cells have chloroplasts but do not have mitochondria.Plant cells have a nucleus and a cell wall; animal cells do not have either of these structures.Plants cell have a cell wall and chloroplasts; animal cells do not have either of these structures.Plant cells have a cell wall and a cell membrane; animal cells have a cell wall but not a cell membrane.30sSB1a
- Q5A cell has a defect that results in the loss of its ability to regulate the passage of water, food, and wastes into and out of the cell. In which of the following cell structures is this defect MOST LIKELY to be located?mitochondriacell membraneribosomeschloroplasts30sSB1a
- Q6If a cell's lysosomes were damaged, which of the following would MOST LIKELY occur?The cell would have chloroplasts that appear yellow rather than green.The cell would be less able to regulate the amount of fluid in its cytoplasm.The cell would be less able to break down molecules in its cytoplasm.The cell would produce more proteins than it needs.30sSB1a
- Q7Which of the following would be evidence that a cell comes from a plant and not an animal?a large vacuolea single nucleusa semipermeable cell membranea functional mitochondria30sSB1a