Bone marrow is a soft, spongy, connective tissue found inside bones. bone marrow contains stem cells, which can generate new blood cells and, therefore, can treat many diseases of the blood. in the past, extracting bone marrow from a donor required anesthesia and a long, large needle. the process often discouraged people from signing up to be donors. a process called apheresis has made the process much less painful and invasive. in apheresis, the donor's blood passes through a sterile line into the machine. once the blood is inside the machine, the bone marrow stem cells are extracted, and the remaining blood is returned to the donor. donors typically only experience minor discomfort from the needles used and the loss of electrolytes. describe how you think this advance in biotechnology will affect individuals and society. be sure to include any potential medical or ethical issues that could arise from this new practice.
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Biology, 22.06.2019 04:00, stelllllllllllllllla
Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.
Answers: 3
Biology, 22.06.2019 11:30, alvaradolm9723
Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.
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Biology, 22.06.2019 14:50, allisonlillian
Which of the following is not a type of epithelial cell
Answers: 1
Bone marrow is a soft, spongy, connective tissue found inside bones. bone marrow contains stem cells...
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