A cell that uses an organic carbon source and obtains energy from light would be called a photoautotroph. photoheterotroph. chemoheterotroph. chemoautotroph. lithoautotroph.
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photoautotroph. |
photoheterotroph. |
chemoheterotroph. |
chemoautotroph. |
lithoautotroph. |
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- Which of the following is FALSE concerning reasons why bacteria have multiple different types of pigments, such as carotenoids and chlorophylls? Group of answer choices To maximize the amount of light energy harvested. Can help protect from harmful photodynamic reactions To provide a wide range of carbon sources Pigments have narrow ranges of wavelengths they can absorbPlant Cell (Ideal Model) This is a model of an ideal plant cell. Objects are not to scale and many of them would not be visible with a compound light microscope. Fill in the blanks. CIIDThis molecule: is contained in the thylakoid membranes of chloroplasts converts sunlight energy into ATP •reflects green wavelengths of light
- A. Eukaryotic Cells We first will examine cells of Elodea, a eukaryote. With forceps, obtain a leaf of Elodea. Prepare a stained wet mount of the leaf by placing the leaf on a slide, placing a drop of iodine stain on the leaf, and covering the slide and leaf with a coverslip. Examine the leaf under 10X magnification, and locate the cell wall, chloroplasts and much smaller mitochondria. Then switch to the 40X objective and examine one cell. To determine the three dimensional shape of the cell, use the fine adjustment knob to first focus on the upper surface of the cell, and then focus down through to the lower surface of the cell. What is the three dimensional shape of the cell? 3ftft: Which of the following correctly describes the structure and function of the cell wall in plants? The cell wall is composed mainly of cellulose. It allows for fluid movement of the cell. The cell wall is composed mainly of collagen. It supports the cell, allowing it to maintain a rigid shape. The cell wall is composed mainly of cellulose. It supports the cell, allowing it to maintain a rigid shape. The cell wall is composed mainly of collagen. It allows for fluid movement of the cell. Which of the following statements correctly describes how the prokaryotic cells appear compared to the eukaryotic cells under the microscope? The prokaryotic cells are much smaller than the eukaryotic cells. The prokaryotic cells have a nucleus, while the eukaryotic cells do not. The prokaryotic cells have cell membranes, while the eukaryotic cells do not. The prokaryotic cells have cytoplasm, and eukaryotic cells do not.Biology Question
- Part of the light-independent reactions is known as fixation because ________. ATP is fixed into a more stable form ATP is fixed into a more stable form it converts inorganic carbon dioxide into organic carbohydrates it converts inorganic carbon dioxide into organic carbohydrates it is an extremely focused process it is an extremely focused processThis lab simulation will use an instrument called a spectrophotometer. This instrument quantitatively measures the amount of light that is absorbed or transmitted by molecules in solution. Different cells and culture media absorb best at a specific, known, wavelength. In this case the amount of light transmission is related to the number of bacteria present. Optical Density is the value given to the measurement of turbidity. Environmental factors, such as temperature and pH, can disrupt the structure of enzymes, resulting in denaturation and making them unable to function.The growth of microorganisms can be controlled in the laboratory by altering environmental factors, such as temperature, oxygen content, osmotic pressure, and pH. write in your own words the Microbial Growth - Effects of pHCyanobacteria are a group of bacteria that are capable of photosynthesis. They also appear in blue-green color, and are called “blue-green algae”. Fill-in the table below comparing cyanobacteria and algae according to various characteristics. Cyanobacteria Algae Cell type (Eukaryotic / Prokaryotic) Kingdom Pigments Chloroplasts (Present / Absent) Nucleus and membrane-bound organelles (Present / Absent) Ability of photosynthesis (Yes / No) Ability of nitrogen fixation (Yes / No) Reproduction (Asexual / Sexual / Both) Toxic species (Present / absent)
- The plant pigments extracted in the virtual lab that were water soluble were determined to be in which of the following? in the chloroplast lumen embedded in the photosystem proteins in the cytoplasm of the algae cells mesophyll tissue of the algaeWhich of the following statements is incorrect? a. Pigments absorb light of certain wavelengths only. b. Many accessory pigments are multipurpose molecules. c. Chlorophyll a is green because it absorbs green light.What is the function of heterocysts? Heterocysts are cells in which both photosynthesis and nitrogen fixation occurs. Heterocysts are survival structures, similar to bacterial endospores. Heterocysts are specialized cells that fix nitrogen. Heterocysts are cells in which glucose is synthesized.
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