Evaporation of water is a phase of water from
A. a liquid into a vapor.
B. a solid into a vapor.
C. a vapor into a liquid.
D. a vapor into a solid.
E. All of the answer choices are correct.
A. a liquid into a vapor.
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Which type of receptor is involved in rapid responses of muscle cells and neurons? (Select all correct choices.)
A. G protein-coupled receptor B. receptor kinase C. ligand-gated ion channel D. nuclear receptor
What qualities would you expect to observe in this lake?
1.lots of nutrients
2.more phytoplankton than algae
3.high biomass in the profundal zone
4.lots of oxygen at all levels
When an action potential from a motor neuron arrives at the neuromuscular junction (NMJ), a series of events occurs that leads to muscle contraction. Which of the following events will occur last (that is, after all of the others)?
A) acetylcholine (ACh) release B) conformational change in troponin C) depolarization of the muscle cell D) release of Ca2+ from the sarcoplasmic reticulum
Because hydrogen bonds hold the two strands of a DNA molecule together, the strands can be separated without breaking any covalent bonds. Every unique DNA molecule "melts" at a different temperature
In this context, Tm(melting temperature) is the point at which two strands separate, or become denatured. Order the DNA sequences listed below according to relative melting temperatures (from lowest Tm to highest Tm). Assume that they all begin as stable double-stranded DNA molecules. Explain your answer. A. GGCGCACC B. TATTGTCT C. GACTCCTG D. CTAACTGG