Which statement regarding the orbit is false?
A. The orbit is conical in shape.
B. The anterior orbit is the apex.
C. The weakest part of the orbit is the floor.
D. The orbits are angled medially and superiorly.
E. All of the above
Answer: B
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Efferent ductules contain cilia that propel sperm toward the epididymis
Indicate whether this statement is true or false.
If a 10% sucrose solution is separated from a 20% sucrose solution by a membrane impermeable to sucrose, in which direction will net movement of water occur?
A) from the 20% sucrose solution to the 10% sucrose solution only B) from the 10% sucrose solution to the 20% sucrose solution and from the 20% sucrose solution to the 10% sucrose solution C) There will be no net movement of water in this case. D) from the 10% sucrose solution to the 20% sucrose solution only E) None of the answers are correct.
The dual uses for sheep include:
What will be an ideal response?
All of the following are true of the pigment melanin except that it
A) decreases in concentration within cells during exposure to the sun. B) is usually some shade of brown or black. C) protects DNA from the damaging effects of UV radiation. D) is released through melanosomes. E) is produced by cells called melanocytes.