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BIOLOGY 102 MODULE1 EXAM 4 VERSIONS ALL COMPLETE QUESTION WITH VERIFIED ANSWERS

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BIOLOGY 102 MODULE1 EXAM 4 VERSIONS ALL COMPLETE QUESTION WITH VERIFIED ANSWERS Effect of Arginine Injection - ANSWERS-In individuals with normal OAT, arginine injections lead to a temporary increase in plasma ornithine, which is efficiently processed. However, in individuals with mutated OAT, this results in an accumulation of ornithine due to impaired conversion to P5C and proline. Dietary Recommendations for Gyrate Atrophy - ANSWERS-A low-protein, low-ornithine, and low-arginine diet helps reduce the substrate load on the defective pathway, minimizing ornithine buildup and slowing GA progression. Significance of Higher Vmax in Control - ANSWERS-A significantly higher Vmax in the control indicates that the normal OAT enzyme operates much more efficiently than the mutant version, suggesting that the mutation reduces the enzyme's catalytic capability.

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BIOLOGY 102 MODULE 4 - 4 VERSIONS
ALL QUESTIONS WITH DETAILED
ANSWERS


hypersensitivity - ANSWERS-an exaggerated response by the immune system to a
particular substance

immunodeficiency - ANSWERS-immune system with decreased or compromised
response to disease-causing organisms
salivary glands - ANSWERS-Glands of the mouth that produce saliva, a digestive
secretion

liver - ANSWERS-produces bile which is very alkaline and neutralizes. processes
vitamins and fats and synthesizes many plasma proteins

pancreas - ANSWERS-makes juices that neutralize the acidic chyme exiting the
stomach and contain enzymes needed to digest protein and carbohydrates

gallbladdr - ANSWERS-aids the liver by storing bile and concentrating bile salts

Where do animals get their energy? - ANSWERS-primary source= carbohydrates

mechanical digestion - ANSWERS-Physical breakdown of large pieces of food into
smaller pieces

propulsion - ANSWERS-the action of driving or pushing forward.

steps of digestion - ANSWERS-mechanical digestion, chemical digestion, propulsion,
and absorption

digestion - ANSWERS-digestible carbohydrates into glucose. then cellluar respiration
turns glucose and oxygen into ATP to fuel cell functions

digestion - ANSWERS-starch and glycogen are broken down into glucose by amylase
and maltase (breaks glycogen). Sucrose (table sugar) and lactose (milk sugar) are
broken down by sucrase and lactase

,protein digestion - ANSWERS-takes place in the stomach. pepsin helps digest. the
amino acids are absorbed into the bloodstream through the small intestines.

pepsin - ANSWERS-enzyme that plays an important roles in the digestion of proteins by
breaking down the intact protein to peptides, which are short chains of four to nine
amino acids

digestion lipids - ANSWERS-begins in the stomach( also mouth), but happens majorly in
the small intestine due to pancreatic lipase. Bile helps primarily triglycerides by
emulsification.

primary - ANSWERS-genetic/developmental defect results in individual lacking in some
component of the immune system

acquired - ANSWERS-later in life


Incomplete Digestive Tract - ANSWERS-gastrovascular cavity- digestive tract with one
opening that takes in food and ejects wastes. Lacks specialized cells. jellyfish

complete digestive tract - ANSWERS-alimentary canal. digestive system that has two
openings, a mouth and an anus, that are at opposite ends of a continuous tube

gastrovascular cavity - ANSWERS-digestive chamber with a single opening

Alimenary canal - ANSWERS-two openings

oral cavity - ANSWERS-mouth. food is chewed up and moistened by saliva

masticated - ANSWERS-to chew, to reduce to a pulp by crushing or kneading, as
rubber.

amylase - ANSWERS-Enzyme in saliva that breaks the chemical bonds in starches

lipase - ANSWERS-pancreatic enzyme necessary to digest fats. secreted by salivary
glands

tongue - ANSWERS-composed of striated muscle, mixes chewed food with saliva,
forms mixture into bolus

digestion in animals is... - ANSWERS-entirely extracellular. enzymes secreted by lining f
digestive tract and nearby glands

,Pharynx - ANSWERS-back of mouth. where digestive and respiratory passages come
together. soft palate closes of nasopharynx, epiglottis covers opening in trachea and
keeps food from air passages

soft palatte - ANSWERS-close of nasopharynx

epiglottis - ANSWERS-A flap of tissue that seals off the windpipe and prevents food
from entering.

esophagus - ANSWERS-takes food to stomach by peristalsis.

Trachea - ANSWERS-windpipe. infront of esophagus
cytokines - ANSWERS-Chemicals released by the immune system communicate with
the brain.

clonal expansion - ANSWERS-the rapid multiplication of B or T cell clones after
activation by an antigen

lymph nodes - ANSWERS-Bean-shaped filters that cluster along the lymphatic vessels
of the body. They function as a cleanser of lymph as wells as a site of T and B cell
activation

vaccination - ANSWERS-intiates the primary immune response

chronic inflammation - ANSWERS-continuous injury or irritation to tissue. can cause
damage to tissues

allergies - ANSWERS-immune system's over-reaction to antigen

autoimmunity - ANSWERS-immune system recognizes self antigen as being foreign-
results in tissue/organ damage
peristalsis - ANSWERS-rhythmical contraction to move contents in tubular organs

bolus - ANSWERS-A term used to describe food after it has been chewed and mixed
with saliva

stomach - ANSWERS-the human stomach is acidic (pH 1.5-3) and digests most of the
protein from food. Lined with thick mucus to keep stomach things inside.

stomach walls - ANSWERS-have deep folds that disappear as the stomach fills to an
approximate volume of one liter. Epithelial lining has millions of gastric pits, which drain
gastric glands

, Chyme - ANSWERS-food mixed with gastric juices

gastric pits - ANSWERS-Gastric glands that release secretions into the stomach

pyloric sphincter - ANSWERS-Controls passage of food from stomach to small intestine.
when relaxes small amount of chyme goes to the small intestine

small intestine - ANSWERS-further digestion and absorption take place in the small
intestine. First place nutrients are absorbed a mucous membrane, has ridges and
furrows that give it a corrugated surface. Villi and microvilli increase surface area

villi - ANSWERS-Fingerlike extensions of the intestinal mucosa that increase the surface
area for absorption. contains blood capillaries and a lymphatic capillary

microvilli - ANSWERS-projections that increase the cell's surface area on the villi

large intestine - ANSWERS-includes cecum, colon, rectum, and anus. Larger in
diameter but shorter than small intestine. Absorbs water, salts, and some vitamins

Constipation - ANSWERS-feces are hardened because of excess water removal in the
colon

diarrhea - ANSWERS-not enough water is removed from the feces

accessory organs - ANSWERS-add secretions (enzymes) that catabolize food into
nutrients. salivary glands, liver, pancreas, gallbladder


cephalic phase - ANSWERS-neural response to the stimulus provided by food. triggers
salivation and secretion of gastric juices to prepare the stomach to receive food

gastric phase - ANSWERS-begins once the food arrives in the stomach. Builds on
stimulation from the cephalic phase. Gastric acids and enzymes process the ingested
materials. the gastric phase is stimulated by:
1. distension of the stomach
2. pH drop of the gastric contents
3. presence of undigested material

intestinal phase - ANSWERS-begins when chyme enters the small intestine triggering
digestive secretions. this phase controls the rate of gastric emptying

Seses - ANSWERS-convert a stimulus into an electrical signak in the nervous system.

stimulus - ANSWERS-a signal to which an organism responds

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