When yeast cells are cultured in the presence of both glucose and galactose, the GAL genes are
A) transcribed and then translated.
B) transcribed but not translated.
C) neither transcribed nor translated.
D) translated but not transcribed.
E) transcribed and translated simultaneously.
C
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Which of the following best explains why bees aren't attracted to red flowers?
A. Bees perceive red as a warning signal. B. Bees can't see red. C. Red flowers usually are odorless. D. Both because red flowers are odorless and because bees can't see red. E. All of the other choices provided are incorrect.
Gaucher disease is the most common of lipid storage diseases in humans. It is caused by a deficiency of an enzyme necessary for lipid metabolism
This leads to a collection of fatty material in organs of the body including the spleen, liver, kidneys, lungs, brain, and bone marrow. Using your knowledge of the structure of eukaryotic cells, identify the statement below that best explains how internal membranes and the organelles of cells would be involved in Gaucher disease. A) The mitochondria are most likely defective and do not produce adequate amounts of ATP needed for cellular respiration. B) The rough endoplasmic reticulum contains too many ribosomes which results in an overproduction of the enzyme involved in carbohydrate catalysis. C) The lysosomes lack sufficient amounts of enzymes necessary for the metabolism of lipids. D) The Golgi apparatus produces vesicles with faulty membranes that leak their contents into the cytoplasm of the cell.
The archaeplastids include the red algae and the green algae
________________ Indicate whether the statement is true or false.
Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color vision have a color-blind son. What are the genotypes of the parents?
A) XnXn and XnY B) XNXN and XnY C) XNXN and XNY D) XNXn and XNY