RIO BIO 202 TEST PAPER 2025/2026 QUESTIONS WITH
ANSWERS GRADED A+
✔✔what gives bile its main pigment - ✔✔bilirubin, from hemoglobin breakdown
✔✔what does bile contain - ✔✔minerals, bile acids, cholesterol, bile pigments, &
phospholipids
✔✔urobilinogen - ✔✔brown color of feces, bile that is metabolized by intestinal bacteria
✔✔what part of bile turn into fats - ✔✔bile acids/salts
✔✔where are bile acids synthesized from? - ✔✔cholesterol
✔✔where are bile acids reabsorbed? - ✔✔small intestine and recycled
✔✔most of the semen is produced in the - ✔✔seminal vesicles
✔✔what hormone suppresses spermatogenesis without affecting testosterone secretion
- ✔✔inhibin
✔✔testosterone inhibits the secretion of what hormone - ✔✔gonadotropin-releasing
hormone secretion
✔✔__________ are feminizing hormones - ✔✔estrogen
✔✔__________ inhibits the secretion of _________ during the female sexual cycle -
✔✔estrogen and progesterone, FSH and LH
✔✔in early pregnancy, what hormone stimulates the growth of the corpus luteum? -
✔✔human chorionic gonadotropin
✔✔describe location of pancreas - ✔✔retroperitoneal gland behind the stomach
✔✔describe the exocrine/endocrine functions of the pancreas - ✔✔secretes insulin &
glucagon into blood, and secretes 1500mL of juice everyday into duodenum
✔✔what does the pancreas secrete - ✔✔water, enzymes, zymogens, electrolytes, and
sodium bicarbonate.
✔✔pancreatic duct - ✔✔runs length of gland to opening at hepatopancreatic sphincter
while the accessory duct opens independently on duodenum
, ✔✔name the sequence of structures through which sperm will travel after leaving the
seminiferous tubules - ✔✔rete testis, efferent ducts, epididymis, ductus deferens,
ejaculatory duct, urethra
✔✔spermatozoon - ✔✔mature sperm cell
✔✔the head of the sperm cell contains what structures? - ✔✔nucleus, acrosome, and
flagellar basal body
✔✔what cells is testosterone produced by in the testes? - ✔✔intersitial
✔✔pancreatic amylase - ✔✔digests starch
✔✔pancreatic lipase - ✔✔digests fats
✔✔ribonuclease - ✔✔digests RNA
✔✔deoxyribonuclease - ✔✔digests DNA
✔✔function of trypsin - ✔✔digests dietary protein
✔✔function of secretin - ✔✔stimulates all ducts to secrete sodium bicarbonate
✔✔where is gastrin secreted from? - ✔✔stomach & duodenum
✔✔functions of gastrin - ✔✔stimulates gallbladder contraction & pancreatic enzyme
secretion
✔✔what increases surface area on small intestine? - ✔✔villi and microvilli
✔✔where does most chemical digestion and nutrient absorption occur? - ✔✔small
intestine
✔✔functions of duodenum - ✔✔-recieves stomach contents, pancreatic juice & bile.
-neutralizes stomach acids.
-emulsifies fats.
-inactivates pepsin by pH increase.
-pancreatic enzymes present.
✔✔function of jejunum and how long is it - ✔✔absorption of nutrients, about 8 ft long
✔✔how long is the ileum and where does it end - ✔✔12 feet, ends at ileocecal junction
with large intestine
ANSWERS GRADED A+
✔✔what gives bile its main pigment - ✔✔bilirubin, from hemoglobin breakdown
✔✔what does bile contain - ✔✔minerals, bile acids, cholesterol, bile pigments, &
phospholipids
✔✔urobilinogen - ✔✔brown color of feces, bile that is metabolized by intestinal bacteria
✔✔what part of bile turn into fats - ✔✔bile acids/salts
✔✔where are bile acids synthesized from? - ✔✔cholesterol
✔✔where are bile acids reabsorbed? - ✔✔small intestine and recycled
✔✔most of the semen is produced in the - ✔✔seminal vesicles
✔✔what hormone suppresses spermatogenesis without affecting testosterone secretion
- ✔✔inhibin
✔✔testosterone inhibits the secretion of what hormone - ✔✔gonadotropin-releasing
hormone secretion
✔✔__________ are feminizing hormones - ✔✔estrogen
✔✔__________ inhibits the secretion of _________ during the female sexual cycle -
✔✔estrogen and progesterone, FSH and LH
✔✔in early pregnancy, what hormone stimulates the growth of the corpus luteum? -
✔✔human chorionic gonadotropin
✔✔describe location of pancreas - ✔✔retroperitoneal gland behind the stomach
✔✔describe the exocrine/endocrine functions of the pancreas - ✔✔secretes insulin &
glucagon into blood, and secretes 1500mL of juice everyday into duodenum
✔✔what does the pancreas secrete - ✔✔water, enzymes, zymogens, electrolytes, and
sodium bicarbonate.
✔✔pancreatic duct - ✔✔runs length of gland to opening at hepatopancreatic sphincter
while the accessory duct opens independently on duodenum
, ✔✔name the sequence of structures through which sperm will travel after leaving the
seminiferous tubules - ✔✔rete testis, efferent ducts, epididymis, ductus deferens,
ejaculatory duct, urethra
✔✔spermatozoon - ✔✔mature sperm cell
✔✔the head of the sperm cell contains what structures? - ✔✔nucleus, acrosome, and
flagellar basal body
✔✔what cells is testosterone produced by in the testes? - ✔✔intersitial
✔✔pancreatic amylase - ✔✔digests starch
✔✔pancreatic lipase - ✔✔digests fats
✔✔ribonuclease - ✔✔digests RNA
✔✔deoxyribonuclease - ✔✔digests DNA
✔✔function of trypsin - ✔✔digests dietary protein
✔✔function of secretin - ✔✔stimulates all ducts to secrete sodium bicarbonate
✔✔where is gastrin secreted from? - ✔✔stomach & duodenum
✔✔functions of gastrin - ✔✔stimulates gallbladder contraction & pancreatic enzyme
secretion
✔✔what increases surface area on small intestine? - ✔✔villi and microvilli
✔✔where does most chemical digestion and nutrient absorption occur? - ✔✔small
intestine
✔✔functions of duodenum - ✔✔-recieves stomach contents, pancreatic juice & bile.
-neutralizes stomach acids.
-emulsifies fats.
-inactivates pepsin by pH increase.
-pancreatic enzymes present.
✔✔function of jejunum and how long is it - ✔✔absorption of nutrients, about 8 ft long
✔✔how long is the ileum and where does it end - ✔✔12 feet, ends at ileocecal junction
with large intestine
