Which of the following answer choices includes organelles that are surrounded by a double membrane?
A) nucleus, lysosome
B) nucleus, mitochondria
C) nucleus, peroxisome
D) peroxisome, lysosome
B
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Dr. Jagasia informs a patient they have fractured the most anterior part of their vertebra. Which part is most likely affected?
A. body B. lamina C. spinous process D. transverse process E. vertebral arch
Which of the following filters supplements the action of bacteria and is used in large, specialized tanks?
a. outside filter c. canister filter b. nitrifier filter d. undergravel filter
When an artery or arteriole is damaged, its smooth muscle layer contracts producing
a) tear in the vessel. b) new vessel branching off the artery or arteriole. c) a vascular spasm. d) tetanus. e) increased blood flow to the damaged vessel.
Answer the following statements true (T) or false (F)
1. Fingerprints come from the layer of the epidermis called the dermal papilla. 2. The subcutaneous layer contains fat that can be used by the body for energy. 3. Both the dermis and epidermis contain layers of tightly packed cells. 4. As we age, the amount of collagen in skin decreases and the amount of elastic fibers increases. 5. The soft, fine hair of a newborn is called lanugo.