Which type of cells line the lungs and blood vessels?
A. simple squamous epithelium
B. simple cuboidal epithelium
C. simple columnar epithelium
D. stratified squamous epithelium
E. keratinized squamous epithelium
A. simple squamous epithelium
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The study of learning has been considerably advanced through studies of the California sea slug Aplysia. Which of the following is NOT a reason Aplysia is well suited to these studies?
A. It has a simple nervous system with only about 20,000 cells. B. Some of its neurons are very large, enabling the insertion of electrodes for recording. C. Some of its neurons are very large, enabling the injection of dyes that allowed tracing the paths and connections of these neurons. D. The large size of some neurons allowed isolation of proteins and mRNAs from these neurons. E. All of the choices for this question are correct.
Glycolysis involves 10 enzyme-catalyzed steps, that can be grouped into three phases: energy investment phase, cleavage phase, and the energy liberation phase.
Answer the following statement true (T) or false (F)
In vertebrates, the _______ is/are usually replaced by ________.
What will be an ideal response?
A complete enzyme that consists of a protein component and a nonprotein component is called a(n) ________.
A. multienzyme B. holoenzyme C. heteroenzyme D. apoenzyme