A doctor diagnosis a child with adrenoleukodystrophy (ALD) a disorder in which there is an accumulation of long fatty acid chains accumulating in the cells of the central nervous system. The issues arise with malfunctions in enzymes associated with which organelle?
A. vacuoles
B. endoplasmic reticulum
C. ribosomes
D. Golgi bodies
E. peroxisomes
Answer: E
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The semi-fluid matrix that surrounds organelles in a cell is called the:
A. stroma. B. nucleoplasm. C. ribosome. D. cytoplasm.
Answer the following statements true (T) or false (F)
1. The chance that a mutation will occur is independent of whether a new phenotype will benefit a population. 2. The hypothesis that birds are closely related to small dinosaurs called theropods began with the discovery of the fossilized skeleton of Archeopteryx. 3. Dinosaurs appeared, became diverse, and eventually became extinct during the Paleozoic era. 4. Earth's history spans about 4.5 billion years. 5. The abundant presence of ammonite fossils, corals, sponges, and crinoids in a large area indicates that the area was once part of an ocean.
What benefit does running a fever provide to a sick person?
What will be an ideal response?
Fungi are at least ________ million years old.
A. 400 B. 1 C. 50 D. 100 E. 25