Rapid turgor pressure changes in specialized multicellular swellings called ____________ are associated with leaves that move in response to touch or light.
A. petioles
B. pulvini
C. stipules
D. pudicas
E. coleoptiles
B. pulvini
Pulvini are two-sided multicellular swellings located at the base of leaves or leaflets in many plants.
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How many chambers does the frog heart have?
(a) one. (b) two. (c) three. (d) four.
Many flowers growing in a cluster along a stem are known as
A. an inflorescence. B. a perfect flower. C. a bouquet. D. a complete flower. E. a pistil.
If citrate levels are high in the cell, but ATP levels are low, what do you think will happen in the cell?
A. Glycolysis will be inhibited, but the Citric acid cycle will be functional, allowing it to be utilized to break down acetyl-CoA generated from beta-oxidation. B. Glycolysis and the Citric acid cycle will both be inhibited, thus under these conditions there will be no mechanism to generate ATP. C. In the presence of glucose, glycolysis will run to generate energy for the cell, but the Citric acid cycle will be inhibited. D. The electron transport chain will be inhibited, causing a build-up of NADH and FADH2. This will inhibit the Citric acid cycle, but in the presence of glucose, glycolysis will still run coupled with fermentation to regenerate NAD+.
Which sex chromosome combinations would you expect to find in a male calico cat?
a. XX b. XXY c. XYY d. XY