Which does NOT occur in prophase I of meiosis?
a. cytokinesis
b. formation of groups of four chromatids
c. homologue pairing
d. crossing over
e. condensation of chromatin
A
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What type of test affixes an antigen to an inert particle such as a latex bead?
A. Cross-reactions B. Agglutination C. Precipitation D. Specificity E. Sensitivity
A key role of the atrioventricular node is to
A. act as the pacemaker of the heart, by generating electrical signals in the right atrium. B. slow down the conduction of the electrical impulse as it passes from the atria to the ventricles. C. speed up the conduction of the electrical impulse as it passes from the atria to the ventricles. D. block backflow of blood from the aorta into the right ventricle. E. act as a barrier to prevent the electrical impulse in the atria from reaching the ventricles.
Parabronchi are characteristic of:
a. insects. b. spiders. c. mollusks. d. birds. e. mammals.
In the Schaffer-Fulton endospore stain, heat is a (fixation/mordant/staining) step
What will be an ideal response?