Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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The process of electrons passing energy to electrons in the neighboring pigment molecules
is known as.
A. Activation energy
B. Resonance
C. Photon transfer
D. Fluorescence
Give written answer with explanation and conclusion
The fluorescent properties of dyes such as SNARF-1 can provide information on the:
A) concentration of H+ ions in specific regions of the cell.
B) volume of a cell.
C) location of specific proteins.
D) the amount of RNA in a cell.
Which type of microscopy allows us to clearly view the internal contents of cell structures smaller than 200 nm?
A. Scanning electron microscopy
B. Light microscopy
C. Fluorescence microscopy
D. Transmission electron microscopy
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- Dr. Rodo and is colleague Mr. Simms were studying the effect of a particular herbacide on the activity of plant cells. They want to observe the impact of the chemical on the molecular structures inside the cell. Which microscope would be the best tool for this research? a. dissecting microscope b. compound light microscope c. scanning electron microscope d. transmission electron microscopearrow_forwardPlants containing only chlorophyll b are exposed to radiation with the following wavelengths: 10nm (x-rays), 450nm (blue light), 670nm (red light), and 800nm (infrared light). Which plants harness the most energy for photosynthesis? a. X-ray irradiated plants b. Blue light irradiated plants c. Red light irradiated plants d. Infrared irradiated plantsarrow_forwardWhat happens to microtubules in the presence of very high levels of GTP? A. They will undergo treadmilling B. They will grow rapidly C. They become unstable and may undergo catastrophy D. They will shrinkarrow_forward
- The use of the natural source of light collected by the mirror and condensed by the diaphragm is a characteristic of which type of microscope? A. Transmission Electron Microscope B. Scanning Electron Microscope C. Compound Light Microscope D. Single Lens Microscope Based on your answer in the previous item, what specific surface of mirror is wise to be used? A. concave surfaced В. convex surfaced С. any kind of surfaced can be used D. plain surfacedarrow_forwardWhat is the role of Polyvinylpyrrolidone in DNA isolation? A. Cell lysis B Remove polyphenols C Inhibit enzymes D Create an aqueous layer where DNA staysarrow_forwardOnly high-Â�energy light can penetrate the ocean and reachphotosynthetic organisms in coral reefs. What color of light wouldyou predict these organisms use?a. Red c. Blueb. Yellow d. Orangearrow_forward
- What is the process exhibited by plants as shown in the image? * A. cytolysis b. plasmolysis C. osmosis d. hemolysis Study of cell * a. plasmology b. serology C. cellulogy d. cytologyarrow_forwardGive written answer with explanation and conclusion A methodology that measures the intensity of light that passes through a solution of ag-ab complexes at a 90°angle from the light source is called: A. Spectrophotometry B. Fluorometry C. Turbidimetry D. Nephelometryarrow_forwardWhy do DNA and RNA move toward the positive electrode in electrophoresis? A. The phosphate groups in DNA and RNA are positively charged. B. The phosphate groups in DNA and RNA are negatively charged. C. The nucleotide bases in DNA and RNA are positively charged. D. The nucleotide bases in DNA and RNA are negatively charged.arrow_forward
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