Energy flow is one-way because
a. all of the energy in an ecosystem stays
constant
b. the amount of energy a producer harvests is
equal to the amount of energy consumers
consume
c. with each energy transfer, some energy
escapes as heat
d. energy cannot be created but it can be
destroyed
e. there is only one form of energy
C
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Neurotransmitters affect postsynaptic cells by _____
I) initiating signal transduction pathways in the cells II) causing molecular changes in the cells III) affecting ion-channel proteins IV) altering the permeability of the cells A) I and III B) II and IV C) II and III D) III and IV E) I, II, III, and IV
Fertilization takes place in the ____________________, and the embryo grows and develops in the ____________________
Fill in the blank(s) with correct word
Which of the traits listed in the map will recombine the most frequently?
a. short aristae length and black body color
b. long aristae and normal wings
c. short aristae length and brown eyes
d. vestigial wings and brown eyes
Autosomal chromosome pairs are identical, whereas the sex chromosome pair in males is not. Indicate whether the statement is true or false