In Mendel's crosses the starting plants are referred to as the P generation
1.True
2.False
1
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In what way does hemoglobin act as a buffer against changes in blood pH?
A) Subsequent binding of oxygen is drastically reduced after the first one is bound. B) Hemoglobin binds some of the excess protons released by carbonic acid. C) Hemoglobin produces protons or hydroxide ions as needed to alter the blood pH. D) Hemoglobin removes excess protons from the red blood cells so that they can be excreted through the kidneys.
Accessory pigments include molecules that reflect reds, oranges, and yellows. Leaves of many plants show these colors in the fall because
A. the cooler weather causes the plant to produce more of the accessory photosynthetic pigments. B. the chlorophyll in the leaves degrades as the plants shed leaves. C. the lessening of daylight as winter approaches causes the plant to produce more of the accessory photosynthetic pigments. D. plants produce more chlorophyll. E. All of the answer choices are correct.
Diphtheria toxin kills cells by interfering with which of the following processes?
A) complement function B) nucleic acid synthesis C) cytoplasmic membrane function D) protein synthesis E) adenylate cyclase activity
How does E. coli measure the Trp levels in the cell to regulate its synthesis?
What will be an ideal response?