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Bio. U3 Yr. 1
| Question | Answer |
|---|---|
| What structure is found in both prokaryotic and eukaryotic cells? | ribosomes |
| What functions of life are found in all unicellular organisms? | growth, response, nutrition |
| What statement is true of cells? | Cells can have multiple nuclei |
| What organelles have a transport function? | Golgi apparatus and endoplasmic reticulum |
| A red blood cell is 8 µm in diameter. If drawn 100 times larger than its actual size, what diameter will the drawing be in mm? | 0.8 mm |
| What is NOT a difference between prokaryotic and eukaryotic cells? | Prokaryotic cells have greater compartmentalization than eukaryotic cells. |
| What features do a chloroplast and a nucleus have in common? | They are both surrounded by a double membrane and they both contain DNA, but NOT both are only found in plant cells or that they both contain 70S ribosomes |
| What explains how all cells in a multicellular organism can have the same DNA, and yet there are many different types of cells? | Some genes are expressed in some cells but not others |
| What distinguishes a light microscope from an electron microscope? | LightMicroscopesCaptureImagesIn true color, whereas electron microscopes can only capture black-and-white,electron microscopes have much greater resolution (can capture more detail),electron microscopes are larger and more expensive than light microscopes |
| What does NOT provide support for endosymbiotic theory? | All cells with mitochondria and chloroplasts also have a cell wall |
| What organelles is approximately 25 µm in diameter, consists of two subunits that function in protein synthesis, and is sometimes attached to membranes? | Ribosomes |
| Striated muscle fibers and aseptate fungal hyphae are atypical cells in what way? | They both contain multiple nuclei |
| Red blood cells are specialized for carrying oxygen to body cells. What is NOT an adaptation that helps them carry out this function? | Lacking a cell membrane |
| Eukaryotic cells may have originated from a prokaryotic cell engulfing an aerobic bacteria, which then became a mitochondria, and/or engulfing a photosynthetic bacteria, which then became a chloroplast. What theory describes this process? | Endosymbiotic Theory |
| True or False? Amino acids and other organic compounds have been synthesized in the lab from inorganic materials. | True |
| As the size of a cell increases, the surface area to volume ratio ____. This limits the amount of materials that can be moved into and out of the cell for metabolic functions. Therefore, larger cells are ____ efficient. | decreases; less |
| What is a likely place for life to have originated on Earth, and a likely candidate for the first genetic material? | Hydrothermal vents; RNA |
| What are ribozymes? | RNA that can act as a catalyst |
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