Which type of organism produces the toxin responsible for paralytic shellfish poisoning?
A) a bacterium
B) a helminth
C) a protozoan
D) an alga
Ans: D) an alga
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Roughly speaking, (1) one gram of carbohydrate is the equivalent of how many Calories? (2) one gram of fat is the equivalent of how many Calories? (3) one gram of protein is the equivalent of how many Calories?
A. (1) = 4, (2) = 9, (3) = 4. B. (1) = 7, (2) = 9, (3) = 4. C. (1) = 4, (2) = 4, (3) = 4. D. (1) = 4, (2) = 10, (3) = 4.
Together, the membranes of the amniotic egg are called the ____ membranes
Fill in the blank with the appropriate word.
A solution having a pH of 8 is slightly acidic
__________________ Indicate whether the statement is true or false.
Below is a list of breakthroughs in energy metabolism in living systems. Which is the correct order in which they are thought to have evolved?
A. H2O-splitting enzyme activity B. light-dependent transfer of electrons from H2S to NADPH C. the consumption of fermentable organic acids D. oxygen-dependent ATP synthesis (a) A, C, D, B (b) C, A, B, D (c) B, C, A, D (d) C, B, A, D