How do plants regulate water loss?
What will be an ideal response?
Plants can regulate water loss in several ways. First, they can regulate water losses from transpiration by closing their stomata. A waxy cuticle on leaves also helps reduce water loss. For plants well-adapted to arid environments, we see reduced leaf surface and succulent plants that can store water.
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The ability to form endospores in bacteria within Bacillales, Clostridiales, and Lactobacillales suggests the genotype/phenotype evolved
A) at least three separate times in these divergent orders. B) at least once, and horizontal gene transfer among relatives explains its presence in other orders. C) only once in an ancestor to these three orders, due to the high number of genes required. D) either at least once and horizontal gene transfer among relatives occurred or once in a common ancestor.
What additional factor is required to mediate the parasympathetic effects of acetylcholine?
A. G-protein coupled receptor B. GABA C. AMPAR D. habituation E. synaptic integration
Researchers can deliver genes into plants by using ____
a. PCR b. DNA sequencing c. electric or chemical shocks d. gel electrophoresis e. DNA segmentation
Sickle-cell anemia is an inherited blood disorder. It is caused by a change in the amino acid sequence of hemoglobin. This mutation affects hemoglobin protein structure at what level?
A) primary B) secondary C) tertiary D) quaternary E) Hemoglobin is not a protein.