How is a DNA fingerprint used to provide evidence in a murder trial?
What will be an ideal response?
Because each individual's DNA is unique (except in the case of identical twins), an analysis of DNA at a crime scene might lead to a match of an individual's DNA thus implicating him or her as the murderer.
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In general, the lipids that we refer to as oils have ________
A) long fatty acid chains B) a high water content C) unsaturated fatty acids D) saturated fatty acids
Choose the correct statement regarding the structure of the plasma membrane.
The hydrophobic center of the plasma membrane will restrict the movement of fat-soluble substances through the membrane. The membrane is composed of water-soluble molecules, to allow movement of water between the fluid compartments. Carbohydrates in the plasma membrane can serve as a source of immediate energy for the cell. The movement of proteins in the plasma membrane allows for cellular adaptations to the extracellular environment.
Which of the following is not a way that red blood cell shape is significant?
A) It gives the red blood cell a large surface area to volume ratio. B) It allows fast exchange of gases between the inside of the cell and the plasma. C) It enables red blood cells to form stacks. D) It allows red blood cells to bend and flex. E) It enables red blood cells to phagocytose bacteria.
Respiratory acidosis occurs when the partial pressure of
A. oxygen rises. B. oxygen falls. C. carbon dioxide rises. D. carbon dioxide falls.