A friend has been asked to be a bone marrow donor for her sister. She tells you that her sister has low red blood cell counts that drop more every day. Your friend doesn't understand why blood transfusion wouldn't work without having to do a bone marrow
treatment. How would you explain the need for the bone marrow donation to your friend?
What will be an ideal response?
Like all red blood cells, transfused RBCs have a short (120 days) life span, but new bone marrow gives the sister cells she needs to make more blood cells on her own.
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What types of behaviors would you predict would be controlled by quorum sensing?
A. Behaviors effective for single bacteria B. Behaviors effective for groups of bacteria C. All behaviors D. Only virulence behaviors
Scanning electron microscopy (SEM) ________.
a. can be used to view biomolecules at the atomic level b. requires no special treatment of the specimen c. provides a three-dimensional image of a cell's surface d. is used to view internal cellular structure
In building a confidence interval for the ATE of an experiment, what object will determine the spread of the confidence interval?
A. Average outcome for the treated group B. Sample standard deviation for the treated group C. Average outcome for the control group D. Null hypothesis value
This stage of the cell cycle is characterized by growth and it contains a checkpoint to verify that all of the DNA has been replicated prior to mitosis.
A. G1 B. S C. G2 D. Mitosis E. Cytokinesis