Which of the following is an important model organism for the study of development?
A. Escherichia coli
B. hepatitis C
C. Drosophila melanogaster
D. miRNA
C
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Membrane sterols, such as cholesterol, function in animal cell membranes to ____
a. increase the rate of diffusion b. store cellular energy c. facilitate ion transport d. maintain membrane fluidity e. receive chemical signals
Yolk, when unequally distributed in the egg cytoplasm, is most commonly concentrated in the ____ half of the egg
a. cleavage b. gastrulation c. animal d. vegetal e. embryonic
In humans, an X-linked disorder called coloboma
iridia (a fissure in the iris) is a recessive trait. A normal couple has an afflicted daughter. The husband sues the wife for divorce on the grounds of infidelity. Would you find in his favor? What will be an ideal response?
The micrometer (μm) is the most convenient unit for measuring cells. Indicate whether the statement is true or false