Two yeast cells, one of type a and the other of type ?, are in proximity to each other. The a yeast cell has a mutation in the gene for the ? factor receptor protein such that the receptor does not translocate to the plasma membrane of the a cell. If
both cells secrete their respective a and ? factors, which of the following outcomes is most likely to occur?
A) The a and ? cells will grow toward each other.
B) The a cell will grow towards the ? cell, but the ? cell will not grow toward the a cell.
C) The ? cell will grow toward the a cell, but the a cell will not grow towards the ? cell.
D) The a and ? cells will not grow toward each other at all.
Answer: C
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A. The energy is used to transport protons against their concentration gradient B. The energy is used to pump electrons along the electron transport chain C. The energy is converted directly into ATP D. The energy is used to pump NAD+ into the cytoplasm so it can be used in glycolysis
A series of techniques in which DNA fragments from an organism are linked to self-replicating vectors to create
recombinant DNA molecules, which are then replicated in a host cell, is called ____________________. Fill in the blank(s) with the appropriate word(s).
Plants grow taller from their growing tips, or ________. This form of growth is also known as ________ growth
A) apical meristems; primary B) apical meristems; secondary C) axillary buds; primary D) axillary buds; secondary
Animal growth primarily occurs by an increase in the:a
number of tissues and organs. b. number of cells. c. types of cells produced. d. number of cell functions. e. number of cell shapes