A scientist performs an experiment in which they create an artificial cell with a selectively permeable membrane through which only water can pass. They inject a 5M solution of glucose into the cell and then place the cell into a beaker of water. After an hour, what effect do you expect to observe?
A. Water moves out of the cell
B. Glucose moves out of the cell
C. No net change in cell weight
D. Water moves into the cell
E. Glucose moves into the cell
D
You might also like to view...
Protein X contains four transmembrane domains, a short N-terminus and a long C-terminus. Following protein synthesis, the N-terminus of the protein faces the lumen (the inside) of the ER. After protein X is transported to the cell surface via exocytosis, you would expect the N-terminus of protein X to be
A. extracellular. B. cytoplasmic. C. in the lumen. D. in the lipid bilayer of the plasma membrane.
The loudest sounds a nurse hears while listening to a patient's heart through a stethoscope are caused by
A. closing of the AV valves. B. opening of the semilunar valves. C. depolarization of the ventricles. D. contraction of the atria. E. contraction of the ventricles.
The trachea is completely surrounded by rings of cartilage, resulting in an organ that is inflexible
Indicate whether the statement is true or false
You have been following the recent presidential elections and have heard some candidates disparaging excessive and "unnecessary" federal government expenditures
One particular candidate asks: "Why are we spending millions of dollars studying fruit flies? How can that possibly help us find a cure for cancer?" Use your knowledge of model organisms to explain why studies in D. melanogaster (the fruit fly) areactually an excellent use of research funding.