What gives rise to all the formed elements of the blood?
A. macrophages
B. reticulocytes
C. erythroblasts
D. stem cells
E. megakaryocytes
Answer: D
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Use the following information to answer the following question(s): You wake up one morning feeling slightly under the weather. A close family member enthusiastically suggests that you take some Echinacea, an herb commonly used as a cold remedy. You then decide to design an experiment to test Echinacea and see if this claim is true. You think, "If taken at the beginning of a cold, Echinacea will reduce cold symptoms."If you give 100 sick people tablets similar to Echinacea but with no herb (called a placebo), and do not tell them whether they are receiving the placebo or the Echinacea tablet, what kind of control would this be?
A. A positive control, since you are expecting a change to happen in this control group B. A blind control, since the sick people do not know whether they are receiving the placebo or the Echinacea C. A negative control, since you are expecting no change to happen in this control group D. Both B and C are correct
Fleshy fruits with hard seed coats, such as cherries, are more likely to be dispersed by ____ than by other means
a. wind b. adhering to animal fur c. passing through animal guts d. falling to the ground, rotting, and releasing their seeds e. water currents
Which of the following characteristics refers to the microscope's ability to show two separate entities as separate and distinct?
A. refraction B. resolving power C. magnification D. All of these choices are correct.
What are the consequences of lesion bypass?
What will be an ideal response?