★ Digestive System Quiz
What is the process of breaking down food into smaller pieces by grinding it called?
A. Chemical digestion
B. Absorption
C. Mechanical digestion
D. Assimilation
Select your answer:

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Skin and Derivatives › View Identify structure number 4.
A. sebaceous glands
B. adipose tissue
C. Meissner’s corpuscles
D. sweat glands
Cellular Components › View
Which of the following statements does not apply to the nuclear envelope?
A. It is a double membrane
B. It has pores through which material enters and leaves.
C. It is continuous with the endoplasmic reticulum.
D. It has infoldings to form cristae