Explain the relationship between protein consumption and the nitrogenous waste products found in mammalian urine
What will be an ideal response?
Proteins are made up of amino acids, which contain an amino group. When more protein is consumed than can be used for making more protein, the amino group has to be removed in the liver from the amino acids. These amino groups are made into ammonia, which is extremely toxic. The liver immediately changes the ammonia into urea, which is less toxic. The kidneys filter the urea from the blood and excrete it in urine.
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On a phylogenetic tree, two clades that emerge from the same node are called ____ because they are each other’s
closest relatives.
a. sister clades b. ancestral clades
c. phyla d. families e. cousins
Each new DNA strand starts at an ______ synthesized by ______
Fill in the blank(s) with the appropriate word(s).
Fungi contact and absorb food through the ________, a branching network of ________
A) mycelium; hyphae B) hyphae; mycelia C) mycorrhiza; mushrooms D) mushroom; hyphae
Which of the following is a difference between
movement in the xylem and movement in the phloem?
a. movement in the phloem is by a pushing action; movement in the xylem is by a pulling action b. movement in the phloem occurs through nucleated cells; movement in the xylem occurs through non-nucleated cells c. movement in the phloem is always down; movement in the xylem is always up d. movement in the phloem starts in the roots; movement in the xylem starts in the leaves e. all of these are differences between movement in the xylem and movement in the phloem