How does the spiral valve within the shark intestine increase the efficiency of food digestion?
What will be an ideal response?
The spiral valve does two things. It aids in more efficient digestion by increasing the available surface area for uptake of digested materials. The spiral valve also slows the progression of food within the short intestine in order to allow more time for complete digestion of the food.
Biology & Microbiology
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There is a compound found in dung that helps the fungus to absorb which of the following
macronutrients?
a. iron b. nitrogen c. phosphorus d. potassium
Biology & Microbiology
Which of the following designations indicates a sex-linked trait?
A. XB B. A C. IA D. i E. a
Biology & Microbiology
White blood cells engulf bacteria using _____
A) phagocytosis B) pinocytosis C) osmosis D) receptor-mediated exocytosis
Biology & Microbiology
which of the following is an androgen
What will be an ideal response?
Biology & Microbiology