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Questions in biology

[Terjawab] Which two cellular structures help cells move around? A. Nuclei and cell walls B. Chloroplasts and endomembrane systems C. Cilia and flagella D. Ribosomes and mitochondria

[Terjawab] What would happen in an ecosystem without decomposers? A. Plant growth would decrease. B. Producers would increase. C. Plant growth would increase. D. Consumers would increase.

[Terjawab] Which is a major difference between the cell membrane and the cell wall? A. Cell membranes are living; cell walls are not living. B. Cell membranes are found in human cells; cell walls are found in all other cells. C. Cell membranes are found in animal and plant cells; cell walls are found only in plant cells. D. Cell membranes are semipermeable; cell walls are selectively permeable.

[Terjawab] Which of the following has the least influence in the modification of plant leaves for photosynthesis? Select one: A. Location of chloroplasts B. Thickness of leaf C. Presence of root hairs D. Amount of surface area

[Terjawab] Which two organs are part of the excretory system? A. Gizzard, beak B. Stomach, esophagus C. Large intestine, small intestine D. Kidney, bladder

[Terjawab] The microscope helped Antoine van Leeuwenhoek discover "little animalcules," which were really the first descriptions of microscopic items such as: A. Bacteria B. All of the above C. Red Blood Cells D. Protozoa and Algae

[Terjawab] How should a microscope be carried?

[Terjawab] The fluid mosaic model explains: Select one: A. why active transport occurs across a cell membrane. B. the arrangement of cell membrane components. C. the movement of sodium ions across the cell membrane. D. why fluids collect in a cell under hypotonic conditions.

[Terjawab] Why does photosynthesis require water? A. Because water provides oxygen atoms B. Because water provides electrons C. Because water accepts electrons D. Because water acts as a catalyst

[Terjawab] What statement is not true about photosynthesis? Select one: A. ATP and NADH are produced during the light-dependent reactions. B. Carbon dioxide is an input in the light-dependent reactions. C. Oxygen is a limiting factor in the rate of photosynthesis. D. The sun's energy is harnessed and converted into chemical energy.