Jawless fish. The class Agnatha is a class made up of jawless fish. It excludes all vertebrates with jaws.
Animalia are heterotrophs while plantae are autotrophs
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You observe a cell in a stained section of connective tissue. The cell has an indented nucleus and obvious cytoplasmic granules. Upon further testing, you determine that the granules contain histamine. This cell is most likely a(n) _____.
mast cell
Answer AND Explanation:
The thyroid gland secretes thyroxine, an iodine-containing hormone. The thyroxine stimulates carbohydrate, protein and lipid metabolism in most organs and tissues of the body. It has a general effect of increasing the metabolic rate. Deficiency of iodine in the diet causes the disease called goitre. This is characterized by an enlargement of the thyroid gland.
