⟩ What is biosphere?
Biosphere is the set of all of the ecosystems of the planet.
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When flagella exist, their movement is powered by ATP in A) procaryotes only. B) eucaryotes only. C) both procaryotes and eucaryotes
DNA is the primary molecule for information storage in A) procaryotes only. B) eucaryotes only. C) both procaryotes and eucaryotes
Cell walls, when they exist, usually contain peptidoglycan in A) procaryotes only. B) eucaryotes only. C) both procaryotes and eucaryotes
The nucleus of the cell is where A) energy for cell division is generated. B) ribosomes translate mRNA into proteins. C) chromatin is kept within a membrane delimited body. D) endocytic vacuoles fuse with lysosomes
The F1 particles of mitochondria are A) a type of ribosome that synthesizes mitochondrial proteins. B) a structural component of the mitochondrial inner membrane. C) an enzyme complex that synthesizes ATP during respiration. D) a storage complex for calcium phosphate in the mitochondria
Plastids are A) protrusions of plasma membrane that bud off of plant cells. B) cytoplasmic organelles that often contain photosynthetic pigments. C) pieces of circular, double stranded DNA that can carry drug resistance. D) areas of the nucleus where rRNA is transcribed
Mitochondria are similar to bacteria in several ways. Which of the following is NOT a similarity? A) Both have peptidyl glycan in their cell wall. B) Both have circular, double stranded DNA. C) Both are about the same size. D) Both have 70S ribosomes
Lysosomes of the cell are where A) lysozyme is synthesized. B) secretory proteins are transported to the surface. C) endocytosed material is degraded. D) glycogen is stored as an energy source
Which of the following is NOT a mechanism for a cell to degrade its own cytosolic proteins? A) Autophagic vacuoles B) Phagocytosis and secondary lysosome fusion. C) 26S Proteosome degradation. D) All the above are correct mechanisms
Colchicine treatment of cells to disrupt microtubules can result in A) loss of cell shape B) loss of directional movement. C) loss of nutrient transport. D) all of the above
