Which of the following structures protects the delicate gills of many fish?
A) Spiracles
B) An operculum
C) Lamellae
D) Tracheoles
E) An alveolus
B
Biology & Microbiology
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Identify the hydrogen ion concentration that represents the lowest pH from the following list:a
1 ? 10?3 b. 1 ? 10?4 c. 1 ? 10?7 d. 1 ? 10?11 e. 1 ? 10?14
Biology & Microbiology
What two properties do various types of cancer cells share?
What will be an ideal response?
Biology & Microbiology
If heat energy is absorbed by the system during a chemical reaction, the reaction is said to be:
A) at equilibrium. B) endergonic. C) endothermic. D) exergonic. E) exothermic
Biology & Microbiology
Micronutrients are necessary for converting food to useful energy for muscles.
Indicate whether the statement is true or false.
Biology & Microbiology