Which of the following organelles has ribosomes bound to its membrane?
A) plasma membrane
B) nucleus
C) mitochondria
D) smooth endoplasmic reticulum
E) rough endoplasmic reticulum
Answer: E
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A muscle whose name has "orbicularis" in it is ________ in appearance.
A. small B. straight C. oblique D. circular E. very large
The typical source of dietary iodine is iodized ________.
Fill in the blank(s) with the appropriate word(s).
All of the following are steps in setting up the microscope in order to view a specimen EXCEPT ________
A) checking the position of the condenser B) focusing C) positioning the low-magnification objective lens over the aperture D) plugging in the electrical cord and turning the microscope lamp on
The enzyme catalase acts on the substrate
A. peroxidase. B. oxygen. C. hydrogen. D. hydrogen peroxide.