What does a karyotype reveal about chromosomes found in actively dividing cells?
What will be an ideal response?
centromere position
size
number
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An IPSP occurs when:
A. ligand-gated chloride channels open. B. ligand-gated calcium channels open. C. voltage-gated chloride channels open. D. both ligand- and voltage-gated chloride channels open.
Which of the following statements about veins is false?
A. Veins located in the head, limbs, and lower body have one-way valves that help prevent blood from pooling due to gravity. B. The blood pressure within the veins is much lower than the blood pressure within the arteries. C. Veins have thinner walls than arteries. D. As much as 80% of the total blood volume resides in the venous circulation at any given time. E. None of the answer options is false.
All of the following would be appropriate for handling routine patient specimens (urines, sputums, wound swabs) for microscopy and culture EXCEPT
A. lab coat. B. gloves. C. biological safety cabinet. D. full-body positive pressure suit with air supply. E. appropriate waste decontamination.
Moss sperm are produced in
A. antheridia. B. stomata. C. sporophytes. D. lycophylls. E. archegonia.