What would happen to the structure in figure 7-4 if part D(cholesterol) is completely removed? It would become more rigid. Algal cells are placed in an isotonic solution. Additional amounts of solute’s are slowly added to the solution.
Which structure in Figure 7 6 is the cell control center?
In the same way that the main office controls a large factory, the nucleus is the control center of the cell. The nucleus contains nearly all the cell’s DNA and with it the coded instructions for making proteins and other important molecules. The structure of the nucleus is shown in Figure 7-7.
What major improvement came with the development of the electron microscope?
Types of microscope In the 20th century, new instruments such as the electron microscope increased magnification and offered new insights into the body and disease, allowing scientists to see organisms such as viruses for the first time.
What is the main purpose of the cycle shown in Figure 8 3?
The diagram that shows only one arrow going in. What is the main purpose of the Calvin cycle shown in Figure 8-3? During photosynthesis light energy is converted to the energy in chemical bonds.What role does cilia and flagella play on stationary cells?
Cilia and flagella are used to move cells through watery environments. What role do these cell parts play on stationary cells? … They move substances along the surface of the cell.
Which structure in the cell shown in Figure 7 3 modifies sorts and packages proteins and other materials for storage or release from the cell?
The Golgi apparatus modifies, sorts, and packages proteins.
Which means of particle transport is shown in Figure 7 4 above?
Which means of particle transport is shown in Figure 7-4 above? active transport.
Which activities happens within the stroma?
The series of biochemical redox reactions which take place in the stroma are collectively called the Calvin cycle or light-independent reactions. There are three phases: carbon fixation, reduction reactions, and ribulose 1,5-bisphosphate (RuBP) regeneration.What would you expect to happen to the plants production of high energy sugars?
plants. If carbon dioxide is removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars? More sugars will be produced. … The same number of sugars will be produced but without carbon dioxide.
What will you expect to happen if the chloroplast ran out of available NADP+?What would you expect would happen if this chloroplast ran out of available NADP+? The organism would not be able to produce NADPH, but will be able to produce ATP.
Article first time published onWhat is an advantage of the electron microscope over the compound light microscope?
Electron microscopes have two key advantages when compared to light microscopes: They have a much higher range of magnification (can detect smaller structures) They have a much higher resolution (can provide clearer and more detailed images)
How did the electron microscope change science?
Implications. The electron microscope ushered in a new era of discoveries printed in academic journals. Atoms were seen by the human eye, as opposed to being merely conceived of. Knowledge of cell structures in plant and animal life increased dramatically as scientists got a first-hand view of the structures themselves …
How does the electron microscope have such high resolution?
Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes.
What could possibly happen to cell if both cilia and flagella are not able to function?
It is now known that defects in cilia and flagella assembly or function give rise to a wide spectrum of human diseases including infertility, loss of vision, kidney cysts, respiratory defects, skeletal anomalies, and neurological disorders.
What role do these cells parts play on stationary cells?
What role do these cell parts play on stationary cells? They move substances along the surface of the cell.
How is flagella different from cilia what are their functions?
CharacterCiliaFlagellaFunctionsIt helps in locomotion, aeration, feeding circulation, etc.It helps mainly in locomotion only.ExamplesIt is present in Paramecium.It is present in Salmonella.
What do you call is the movement of particles from an area of higher concentration to an area of lower concentration across a semipermeable membrane?
This spread of particles through random motion from an area of high concentration to an area of lower concentration is known as diffusion. This unequal distribution of molecules is called a concentration gradient.
What is taking place during diffusion?
diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
What are the tiny structures that carry out jobs inside cells called?
Organelles are specialized structures that perform various jobs inside cells. The term literally means “little organs.” In the same way organs, such as the heart, liver, stomach, and kidneys, serve specific functions to keep an organism alive, organelles serve specific functions to keep a cell alive.
Which structure in the cell shown in Figure 7 3 below modifies sorts and packages?
Cell ComponentFunctionGolgi apparatusModifies, sorts, tags, packages, and distributes lipids and proteinsCytoskeletonMaintains cell’s shape, secures organelles in specific positions, allows cytoplasm and vesicles to move within the cell, and enables unicellular organisms to move independently
Which structure in the cell modifies sorts?
The Golgi apparatus modifies, sorts, and packs the proteins into sacs called vesicles. The vesicles fuse with the cell’s plasma membrane. There the vesicles release the proteins, which move through the plasma membrane to the environment outside the cell.
Which structure in the cell shown in the cell above modifies sorts and packages proteins and other materials for storage or release from the cell?
The Golgi apparatus modifies, sorts, and packages different substances for secretion out of the cell, or for use within the cell. The Golgi apparatus is found close to the nucleus of the cell, where it modifies proteins that have been delivered in transport vesicles from the RER.
What happens to the rate of photosynthesis as the intensity of light increases?
Increasing the light intensity increases the rate of photosynthesis, until some other factor – a limiting factor – becomes in short supply. At very high light intensities, photosynthesis is slowed and then inhibited, but these light intensities do not occur in nature.
What would be most likely to happen if some of the proteins in one of the photosystems?
If proteins in photosystem one were to change shape this would cause a decrease in the formation of NADPH.
What would happen if plants were removed from the environment?
if all plants are removed from the earth there will not a chance to survive as plants and trees absorb all the carbon dioxide from the environment and provides us pure oxygen to breathe so life is not at all possible without plants and trees.
What happens in the stroma in darkness?
The Calvin cycle, which takes place in the stroma, uses ATP and NADPH to convert carbon dioxide to sugar. … In darkness, the Calvin cycle also occurs in the stroma. During the Calvin cycle, the products of the light-dependent reactions (ATP and NADPH) are used to convert molecules of CO2 into high-energy sugars.
Which of the following occurs in the stroma?
Interior to the chloroplast’s inner membrane and surrounding the thylakoids is a fluid called the stroma. The light-independent reactions of photosynthesis take place within the stroma. It contains enzymes that work with ATP and NADPH to “fix” carbon from carbon dioxide into molecules that can be used to build glucose.
What is stroma give its function?
Stroma is the fluid filling up the inner space of the chloroplasts which encircle the grana and the thylakoids. In addition to providing support to the pigment thylakoids, the stroma are now known to contain chloroplast DNA, starch and ribosomes along with enzymes needed for Calvin cycle.
What would happen to a plant cell that suddenly lost its chloroplasts?
what would happen to a plant cell that suddenly lost its chloroplast? The plant cell will die or become dependent on other cells to provide its nutrients. … They transport substances,rid the cell of wastes,and store cellular materials.
What is expected to happen if this drug is applied to the chloroplasts?
What is expected to happen if this drug is applied to the chloroplasts? … The pH in the chloroplast stroma will decrease, and less ATP will be produced. The pH in the chloroplast stroma will increase, and more ATP will be produced. The pH in the chloroplast stroma will decrease, and more ATP will be produced.
How does photosynthesis occur in the chloroplast?
Photosynthesis occurs in the chloroplast, an organelle specific to plant cells. The light reactions of photosynthesis occur in the thylakoid membranes of the chloroplast. Electron carrier molecules are arranged in electron transport chains that produce ATP and NADPH, which temporarily store chemical energy.
