You buy some flowers to give to your mother, but on the drive to her house, the flowers start
to wilt. Your mother quickly puts the flowers into a vase of water. Which of the following is
true?
a. The concentration gradient between the plant and the water surrounding it causes water to
move into the plant.
b. There is a low concentration gradient between the plant and the water into which it is
placed.
c. The low concentration gradient allows for fast movement of water into the plant.
d. The water is used to produce energy in the mitochondria so that the plant no longer wilts.
A
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Which type of species interactions will be harmful to both species involved?
a. Mutualism b. Predation c. Herbivory d. Commensalism e. Interspecific competition
Glial cells perform all of the following functions EXCEPT ____
a. nourish neurons b. control the concentrations of electrolytes c. protect and support neurons d. produce action potentials e. insulate axons
A diploid fertilized egg is called a(n) ________
Fill in the blank(s) with correct word
What determines whether a protein will be produced on a "free ribosome" or on one attached to the endoplasmic reticulum?
A) a special sequence of amino acids on the protein being produced B) a chemical signal on the protein being produced C) a special sequence of nucleotides on the mRNA molecule D) whether the mRNA first binds to a "free ribosome" or one attached to the endoplasmic reticulum