Why do transcription and translation take place in two different locations?
A) DNA is located in the nucleus, whereas the ribosomes needed for translation are not in the nucleus.
B) DNA is located in the nucleus, whereas the ribosomes needed for translation are found outside the cell.
C) DNA is located in the nucleus, whereas the ribosomes needed for transcription are found outside the cell.
D) Translation takes place in the nucleus, whereas the DNA is located elsewhere.
A
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The process of meiosis produces ____________________
a. four cells that have unique allele combinations b. two cells that are genetically identical c. four cells with an unequal number of chromosomes d. two cells that then undergo fertilization
The highest intensity of the Sun's radiation at the Earth surface is in the visible light wavelength ranges of between ~400 to 700 nm
Questions: a) Explain how plants maximize the uptake of sunlight energy. In your answer, consider chlorophyll and antenna pigment structures and functions. b) Why does the photosynthetic part of plants appear green? c) The leaves of some plants lose their green color in the fall, often appearing red or yellow. Use your knowledge of plant pigments to propose a possible reason for these color changes. What will be an ideal response?
Pepsinogen is converted to pepsin by the presence of what other substance?
A) intrinsic factor B) vitamin B12 C) mucus D) HCl
IgE antibodies are best described as
A. a cause of basophil and eosinophil degranulation. B. the antibodies found in body secretions. C. those involved in complement activation. D. the trigger for antibody-dependent cellular toxicity (ADCC). E. the most common type of antibody in the blood during the initial phases of an immune response.