Carbon dioxide can be transported in the blood by all of the following methods, EXCEPT
A) dissolved in plasma as CO2. B) as CO within red blood cells.
C) bound to hemoglobin. D) carried in plasma as HCO3-.
B
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The protists are a diverse group of organisms that have traditionally been grouped together because
they all
a. have the same type of nutrition. b. live in the same environments. c. have very similar DNA sequences. d. have very similar shapes. e. are not prokaryotes, fungi, plants, or animals.
Which of the following aspects is NOT
characteristic of diatoms?
a. overlapping shell b. live in fresh water and cool seas c. silica composition d. flagella e. photosynthetic
Weakened bones, kidney stones, and malfunctioning muscles are symptoms of
a. hyperthyroidism. b. Grave's disease. c. acromegaly. d. hyperparathyroidism. e. Wilson's disease.
What would life on Earth be like today if eukaryotic protists had not evolved?
What will be an ideal response?