In the Schaffer-Fulton endospore stain, heat is a (fixation/mordant/staining) step.
Fill in the blank(s) with the appropriate word(s).
staining
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Archaea and Bacteria are unified as prokaryotes in lacking ________ which Eukarya contain, such as golgi
A) membranes B) nuclei C) membrane-enclosed organelles D) nuclei and membrane-enclosed organelles
Diploid organisms, such as humans and other mammals, have two copies of their genetic material in the form of homologous chromosomes. One copy of each homologous chromosome is passed to the organism from each of its parents during the process of fertilization. For many genetic traits, a diploid organism is said to be either homozygous or heterozygous at a particular locus, depending on whether its parents passed down two of the same or two different alleles for that specific sequence. Which of the following describes a homozygous locus?
Select all that apply. 1. The presence of two or more alleles fro a particular trait in the gene pool 2. The alleles at a particular position on homologous chromosomes of an individual with two true-breeding parent for different alleles 3. the alleles at a particular position on homologous chromosomes of an individual who expresses a recessive trait 4. two of the same alleles are found in a particular position on homologous chromosomes 5. two alleles that are positioned on the same chromosome
The reservoir of Treponema pallidum is the
A. guinea pig. B. fox. C. bat. D. human.
When food distends the stomach, the hormone __________ is produced, which stimulates the gastric
glands. a. secretin b. gastrin c. cholecystokinin d. gastric inhibitory peptide e. lipoprotein lipase