Which of the following are structural features of the trachea?
A.
C-shaped cartilage
B.
Smooth muscle fibers
C.
Cilia
D.
All of the above
Answer Explanation:
Therefore, the Correct Answer is A.
More Questions on TEAS 7 Science
Q #1: If a portion of strand of DNA bases reads 5’ AGCTAGCGT 3’, what would the sequence of bases on the complementary strand read?
A.
5’ UCGAUCGCA 3’
B.
3’ TCGATCGCA 5’
C.
5’ TCGUTCGCU 3’
D.
3’ AGCTAGCGT 5’
Answer Explanation
The complimentary base pairing of DNA states that A pairs with T while C pairs with G. From the give sequence, the complimentary DNA strand will be 3’ TCGATCGCA 5’
Q #2: Which of the following sequences on a DNA molecule would be complementary to GCTTATAT?
A.
TAGGCGCG
B.
ATCCGCGC
C.
CGAATATA
D.
TGCCTCTC
Answer Explanation
Q #3: Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
A.
Diffusion down a concentration gradient
B.
Conversion of carbon monoxide
C.
Passive transport using carrier proteins
D.
Active transport using energy
Answer Explanation
Carbon dioxide moves from the blood to the alveoli through the process of diffusion. The blood has a high concentration of carbon dioxide than the alveoli.
Therefore, carbon dioxide diffuses from blood to alveoli through the cell membrane.
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