"I can tell this cell is in metaphase because . . ."
A. the chromatids are dividing.
B. the spindle is being formed.
C. the chromosomes are aligned on the equator of the cell.
D. the nuclear membrane is forming.
C. the chromosomes are aligned on the equator of the cell.
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A portion (location) of DNA that encodes a specific protein is a
Examine this image of chromosomes and identify the structural components.
A. kinetochore.
B. centromere.
C. chromatid.
D. chromosome.
E. gene.
Broca’s area of the cerebral cortex
a. governs speech production. b. is the vision center. c. is associated with memory storage. d. is responsible for hearing and smell. e. is the primary motor area
Cartilaginous joints
What will be an ideal response?
One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). Thus,H2CO3 ? HCO3- + H+If the pH of the blood drops, one would expect:
A. the concentration of hydroxide ion (OH-) to increase B. the HCO3- to act as an acid and remove excess H+ with the formation of H2CO3 C. the HCO3- to act as a base and remove excess H+ with the formation of H2CO3 D. a decrease in the concentration of H2CO3 and an increase in the concentration of HCO3- E. the concentration of bicarbonate ion (HCO3-) to increase