An embryo was exposed to a chemical early in its development. At birth, there is chromosomal damage to the circulatory system linked to the chemical exposure. What other organ systems should be examined for the same type of damage?
What will be an ideal response?
The muscular and circulatory systems, since mesoderm gives rise to all three systems.
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All fastidious microorganisms require which of the following for growth?
A. Iron B. Oxygen C. Temperatures near normal for the human body D. Extra nutrients (such as whole blood)
Morbidity statistics more precisely define the health of a population than mortality statistics
Indicate whether the statement is true or false.
The upper, orange-shaded portion of this molecule is _____
1.bipolar, containing both hydrophobic and hydrophilic regions
2.hydrophobic, keeping water molecules on the outside of the membrane
3.hydrophilic, able to interact with water molecules
4.a passive transport protein, allowing molecules to pass through the membrane
Which one of the following most specifically explains why plants need water to perform photosynthesis?
A) to provide the oxygen needed to make sugars B) to add a hydrogen to NADPH C) to provide electrons for the light reactions D) to add a phosphate to ATP E) to excite electrons