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DAT Biology Actual Exam with Complete Verified Answers
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DAT Biology Actual Exam with Complete Verified Answers
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DAT Biology Actual Exam withComplete Verified Answers
Glucagon [S&A] - ✔✔Source: Pancreas
Action: Stimulates conversion of glycogen to glucose in the liver, increases blood glucose
Insulin [S&A] - ✔✔Source: Pancreas
Action: Lowers blood glucose, increases glycogen stores
Somatostatin [S&A] - ✔✔Source: Pancreas
Action: Suppresses secretion of glucagon and insulin
Testosterone [S&A] - ✔✔Source: Testes
Action: Maintains male secondary sexual characteristics
Estrogen [S&A] - ✔✔Source: Ovary/Placenta
Action: Maintains female secondary sexual characteristics
Progesterone [S&A] - ✔✔Source: Ovary/Placenta
Action: Promotes growth/maintenance of endometrium
Melatonin [S&A] - ✔✔Source: Pineal
Action maintains circadian rhythms
, Atrial Natriuretic Peptide [S&A] - ✔✔Source: Heart
Action: Involved in osmoregulation and vasodilation
Thymosin [S&A] - ✔✔Source: Thymus
Action: Stimulates T lymphocyte development
4 Stages of Cell Development - ✔✔G1: Cell doubles its organelles and cytoplasm
S: DNA replication
G2: Same is G1
___^INTERPHASE^____
M: Cell divides in two
Mitosis - ✔✔1. Prophase
2. Metapahse (chromosome pairs line up)
3. Anaphase (chromosomes separate within their pairs)
4. Telophase (cell begins to separate, nuclear membrane re-forms)
5. Cytokinesis (cell completely separates into 2 identical daughter cells)
Meiosis - ✔✔1. Prophase I
2. Metaphase I (chromosome pairs line up by shared characteristic, crossing-over occurs)
3. Anaphase I (chromosome pairs separate)
4. Telophase I
5. Metaphase II (chromosome pairs line up)
6. Anaphase II (chromosomes separate within their pairs)
7. Telophase II
8. Cytokinesis (cells separate into 4 daughter cells, or gametes, each with 1 chromosome for each
"type")
*Occurs in spermatogenesis and oogenesis
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