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USABO Exam Questions and Verified Answers Pack | Passed | A
USABO Exam Questions and Verified Answers Pack | Passed | A
[Show more]USABO Exam Questions and Verified Answers Pack | Passed | A
[Show more]Photosynthesis - Light reactions 
: -Light energizes electrons which are then added to NADP+ to create NADPH 
-NADPH then brings the electron through an ETC in the thylakoid membrane - each step 
diminishes the energy of the electron and ATP is created 
Photosynthesis - Dark reactions 
: -Occurs in...
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Add to cartPhotosynthesis - Light reactions 
: -Light energizes electrons which are then added to NADP+ to create NADPH 
-NADPH then brings the electron through an ETC in the thylakoid membrane - each step 
diminishes the energy of the electron and ATP is created 
Photosynthesis - Dark reactions 
: -Occurs in...
Benedict test 
: simple carbohydrates; reducing sugars (monosaccharides- ie. glucose, fructose, 
glyceraldehyde, lactose, arabinose and maltose) 
biuret test 
: A biochemical test for the presence of proteins. 
ninhydrin test 
: detects amino acids 
iodine test 
: Test for starch 
sudan test 
: tes...
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Add to cartBenedict test 
: simple carbohydrates; reducing sugars (monosaccharides- ie. glucose, fructose, 
glyceraldehyde, lactose, arabinose and maltose) 
biuret test 
: A biochemical test for the presence of proteins. 
ninhydrin test 
: detects amino acids 
iodine test 
: Test for starch 
sudan test 
: tes...
Which statement is true about enzymes? Enzymes 
A. Are made up of a base containing nitrogen, phosphate, and ribose. 
B. Have activity that is independent of temperature and pH. 
C. Lose some or all of their normal activity when their 3-D structure is disrupted. 
D. Provide the activation energy nee...
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Add to cartWhich statement is true about enzymes? Enzymes 
A. Are made up of a base containing nitrogen, phosphate, and ribose. 
B. Have activity that is independent of temperature and pH. 
C. Lose some or all of their normal activity when their 3-D structure is disrupted. 
D. Provide the activation energy nee...
biological form is known as this 
: anatomy 
biological function is known as this 
: physiology 
this term means tapered on both ends; streamlined body contour 
: fusiform 
rate of exchange (for things like nutrients, waste products, and gases) is proportional to this 
: (membrane) surface area 
amo...
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Add to cartbiological form is known as this 
: anatomy 
biological function is known as this 
: physiology 
this term means tapered on both ends; streamlined body contour 
: fusiform 
rate of exchange (for things like nutrients, waste products, and gases) is proportional to this 
: (membrane) surface area 
amo...
Mycorrhizae 
: Symbiotic organisms (aka symbionts) with plants that live on their roots, helping the 
plant gain nutrients 
Nerve net 
: A nervous system that moves neural signals in all directions from the stimuli, found in 
invertebrates like hydra 
Malpighian tubules 
: Tubes in an insect that ...
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Add to cartMycorrhizae 
: Symbiotic organisms (aka symbionts) with plants that live on their roots, helping the 
plant gain nutrients 
Nerve net 
: A nervous system that moves neural signals in all directions from the stimuli, found in 
invertebrates like hydra 
Malpighian tubules 
: Tubes in an insect that ...
insterstitial fluid 
: fluid located between cells and among tissues 
cuboidal epithelium 
: cube shaped epithelial cells that function in secretion, and are located in various 
endocrine glands 
simple columnar epithelium 
: lines intestines, secretes digestive juices and absorbs nutrients, one ce...
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Add to cartinsterstitial fluid 
: fluid located between cells and among tissues 
cuboidal epithelium 
: cube shaped epithelial cells that function in secretion, and are located in various 
endocrine glands 
simple columnar epithelium 
: lines intestines, secretes digestive juices and absorbs nutrients, one ce...
root system 
: the entire set of plant roots that anchor the plant, absorb and transport minerals and 
water, and store food 
shoot system 
: the aerial portion of a plant body, consisting of stems, leaves, and (in angiosperms) 
flowers 
photosynthate 
: a sugar or other product of photosynthesis ...
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Add to cartroot system 
: the entire set of plant roots that anchor the plant, absorb and transport minerals and 
water, and store food 
shoot system 
: the aerial portion of a plant body, consisting of stems, leaves, and (in angiosperms) 
flowers 
photosynthate 
: a sugar or other product of photosynthesis ...
homologous chromosomes 
: Chromosomes that have the same sequence of genes and the same structure 
chiasmata 
: X-shaped regions where crossing over occurred. 
cohesins 
: Proteins that hold sister chromatids together 
crossing over 
: Process in which homologous chromosomes exchange portions of the...
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Add to carthomologous chromosomes 
: Chromosomes that have the same sequence of genes and the same structure 
chiasmata 
: X-shaped regions where crossing over occurred. 
cohesins 
: Proteins that hold sister chromatids together 
crossing over 
: Process in which homologous chromosomes exchange portions of the...
Which statement is true about enzymes? Enzymes... 
A. Are made up of a base containing nitrogen, phosphate, and ribose. 
B. Have activity that is independent of temperature and pH. 
C. Lose some or all of their normal activity when their 3-D structure is disrupted. 
D. Provide the activation ener...
Preview 1 out of 4 pages
Add to cartWhich statement is true about enzymes? Enzymes... 
A. Are made up of a base containing nitrogen, phosphate, and ribose. 
B. Have activity that is independent of temperature and pH. 
C. Lose some or all of their normal activity when their 3-D structure is disrupted. 
D. Provide the activation ener...
Types of animal signaling/communication 
: 1. Pheromones: Chemical signals that have evolved for communication between 
members of the same species 
2. Auditory: Vocalizations for animals to remain hidden while talking 
3. Visual: Signals that can be seen like gestures, facial expressions, body pos...
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Add to cartTypes of animal signaling/communication 
: 1. Pheromones: Chemical signals that have evolved for communication between 
members of the same species 
2. Auditory: Vocalizations for animals to remain hidden while talking 
3. Visual: Signals that can be seen like gestures, facial expressions, body pos...
vitamin b1/thiamine 
: coenzyme in TCA, beriberi (anemia, nerver disorders, emaciation) 
vitamin b2 (riboflavin) 
: FAD and FMN (angular chelitis) (ETC) 
niacin 
: NAD+ and NADP+ 
vitamin b6 (pyridoxine) 
: amino acid metabolism (numb feet, bad coordination, unstable gait, anemia, muscle 
twitch, i...
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Add to cartvitamin b1/thiamine 
: coenzyme in TCA, beriberi (anemia, nerver disorders, emaciation) 
vitamin b2 (riboflavin) 
: FAD and FMN (angular chelitis) (ETC) 
niacin 
: NAD+ and NADP+ 
vitamin b6 (pyridoxine) 
: amino acid metabolism (numb feet, bad coordination, unstable gait, anemia, muscle 
twitch, i...
What enzyme does HIV use to convert RNA to DNA? 
: Reverse Transcriptase 
The promoter region of a prokaryotic gene is located ______ to the gene and is the binding 
site for ______. 
: 5'...RNA polymerase 
Which of the following is TRUE of prokaryotes? 
I. Simultaneous transcription and translat...
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Add to cartWhat enzyme does HIV use to convert RNA to DNA? 
: Reverse Transcriptase 
The promoter region of a prokaryotic gene is located ______ to the gene and is the binding 
site for ______. 
: 5'...RNA polymerase 
Which of the following is TRUE of prokaryotes? 
I. Simultaneous transcription and translat...
What vitamin is found in Porkk, used in removing CO2, and symptoms of deficiency are 
Beriberi 
: B1 Thiamine 
Whats is B2 
: riboflavin (skin lessions and cracks at corners of mouth) 
What is B3 Found in Nuts, Meats, and Grains 
: Niacin *skin and gastrointesinal lessions, delusions, cofnusions) 
...
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Add to cartWhat vitamin is found in Porkk, used in removing CO2, and symptoms of deficiency are 
Beriberi 
: B1 Thiamine 
Whats is B2 
: riboflavin (skin lessions and cracks at corners of mouth) 
What is B3 Found in Nuts, Meats, and Grains 
: Niacin *skin and gastrointesinal lessions, delusions, cofnusions) 
...
Why is myelin important in the nervous system? 
A. It allows signals to travel faster along axons because depolarization occurs only at 
myelinated locations. 
B. It allows signals to travel faster along axons because depolarization occurs only at 
nonmyelinated locations. 
C. It bundles the dendr...
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Add to cartWhy is myelin important in the nervous system? 
A. It allows signals to travel faster along axons because depolarization occurs only at 
myelinated locations. 
B. It allows signals to travel faster along axons because depolarization occurs only at 
nonmyelinated locations. 
C. It bundles the dendr...
The production of the genetically engineered "golden rice" could be important to people of 
developing nations, especially in South-East Asia, because: 
A. people are more likely to consume yellow grains than white. 
B. golden rice is less expensive to grow and harvest than white rice. 
C. golden...
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Add to cartThe production of the genetically engineered "golden rice" could be important to people of 
developing nations, especially in South-East Asia, because: 
A. people are more likely to consume yellow grains than white. 
B. golden rice is less expensive to grow and harvest than white rice. 
C. golden...
Calcarea, Silicea (sponges) 
: Lack true tissues; have choanocytes (collar cells-flagellated cells that ingest bacteria 
and tiny food particles) 
Cnidaria (hydras, jellies, sea anemones, corals) 
: Unique stinging structures (nematocysts) housed in special cells (cnidocytes); 
diploblastic, radia...
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Add to cartCalcarea, Silicea (sponges) 
: Lack true tissues; have choanocytes (collar cells-flagellated cells that ingest bacteria 
and tiny food particles) 
Cnidaria (hydras, jellies, sea anemones, corals) 
: Unique stinging structures (nematocysts) housed in special cells (cnidocytes); 
diploblastic, radia...
Thiamine (B1) 
: Function: Coenzyme used in removing carbon dioxide from organic compounds 
Deficiency: Beriberi 
Riboflavin (B2) 
: Function: Component of coenzymes FAD and FMN 
Deficiency: Skin lesions 
Niacin (B3) 
: Function: Component of coenzymes NAD+ and NADP+ 
Deficiency: Skin and gastrointe...
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Add to cartThiamine (B1) 
: Function: Coenzyme used in removing carbon dioxide from organic compounds 
Deficiency: Beriberi 
Riboflavin (B2) 
: Function: Component of coenzymes FAD and FMN 
Deficiency: Skin lesions 
Niacin (B3) 
: Function: Component of coenzymes NAD+ and NADP+ 
Deficiency: Skin and gastrointe...
iodine deficiency 
: goiter 
ethane 
: C2H6 
propane 
: C3H8 
butane 
: C4H10 
methane 
: CH4 
2 
enantiomers 
: mirror image isomers 
hydroxyl 
: -OH 
carbonyl 
: C=O 
carboxyl 
: O=C-OH 
amino
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Add to cartiodine deficiency 
: goiter 
ethane 
: C2H6 
propane 
: C3H8 
butane 
: C4H10 
methane 
: CH4 
2 
enantiomers 
: mirror image isomers 
hydroxyl 
: -OH 
carbonyl 
: C=O 
carboxyl 
: O=C-OH 
amino
axon hillock 
: the cone-shaped area on the cell body from which the axon originates 
-trigger zone 
hyperopia 
: A condition in which visual images come to a focus behind the retina of the eye and 
vision is better for distant than for near objects -- called also farsightedness. 
axon hillock has h...
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Add to cartaxon hillock 
: the cone-shaped area on the cell body from which the axon originates 
-trigger zone 
hyperopia 
: A condition in which visual images come to a focus behind the retina of the eye and 
vision is better for distant than for near objects -- called also farsightedness. 
axon hillock has h...
Oxytocin 
: Made in: Posterior pituitary gland 
Type: Peptide 
Purpose: Stimulates contraction of uterus and mammary gland cells 
Regulator: Nervous system 
Antidiuretic hormone (ADH) 
: Made In: Posterior pituitary gland 
Type: Peptide 
Purpose: Promotes retention of water by kidneys 
2 
Regulator...
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Add to cartOxytocin 
: Made in: Posterior pituitary gland 
Type: Peptide 
Purpose: Stimulates contraction of uterus and mammary gland cells 
Regulator: Nervous system 
Antidiuretic hormone (ADH) 
: Made In: Posterior pituitary gland 
Type: Peptide 
Purpose: Promotes retention of water by kidneys 
2 
Regulator...
Parazoa 
: Lack true tissues 
Eumatazoa 
: Have cells organized into tissue layers 
Protostome development 
: Blastopore becomes the mouth and cleavage is spiral 
Deuterostome development 
: Blastopore becomes the anus and cleavage is radial 
Catabolic 
: Release energy; break down 
2 
Anabolic 
: C...
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Add to cartParazoa 
: Lack true tissues 
Eumatazoa 
: Have cells organized into tissue layers 
Protostome development 
: Blastopore becomes the mouth and cleavage is spiral 
Deuterostome development 
: Blastopore becomes the anus and cleavage is radial 
Catabolic 
: Release energy; break down 
2 
Anabolic 
: C...
1) The physical separation of a eukaryotic cell during cell division is: 
A. Mitosis. 
B. Meiosis. 
C. Binary fission. 
D. Cytokinesis. 
E. Synthetic fission. 
: D 
2) Which of the following is TRUE about osmosis? 
A. A solution of CaCl2 will have a lower water potential than a solution of NaCI ...
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Add to cart1) The physical separation of a eukaryotic cell during cell division is: 
A. Mitosis. 
B. Meiosis. 
C. Binary fission. 
D. Cytokinesis. 
E. Synthetic fission. 
: D 
2) Which of the following is TRUE about osmosis? 
A. A solution of CaCl2 will have a lower water potential than a solution of NaCI ...
Peripheral proteins 
: Bound to the surface of the membrane 
What are the 6 major functions of proteins? 
: Transport, enzymatic, signal, cell-to-cell recognition, intercellular joining, and 
attachment to cytoskeleton 
Glycolipids 
: Membrane carbohydrates that are covalently bonded to lipids 
Gly...
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Add to cartPeripheral proteins 
: Bound to the surface of the membrane 
What are the 6 major functions of proteins? 
: Transport, enzymatic, signal, cell-to-cell recognition, intercellular joining, and 
attachment to cytoskeleton 
Glycolipids 
: Membrane carbohydrates that are covalently bonded to lipids 
Gly...
In certain areas of Sub-Saharan Africa high levels of anemia are exhibited as a consequence 
of iron deficiency. What other symptom would you expect might be found in these peoples? 
A. goiter 
B. decrease in immune function 
C. high degree of oscillation in blood glucose levels 
D. scurvy 
E. repr...
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Add to cartIn certain areas of Sub-Saharan Africa high levels of anemia are exhibited as a consequence 
of iron deficiency. What other symptom would you expect might be found in these peoples? 
A. goiter 
B. decrease in immune function 
C. high degree of oscillation in blood glucose levels 
D. scurvy 
E. repr...
The production of the genetically engineered "golden rice" could be important to people of 
developing nations, especially in South-East Asia, because: 
A. people are more likely to consume yellow grains than white. 
B. golden rice is less expensive to grow and harvest than white rice. 
C. golden...
Preview 3 out of 27 pages
Add to cartThe production of the genetically engineered "golden rice" could be important to people of 
developing nations, especially in South-East Asia, because: 
A. people are more likely to consume yellow grains than white. 
B. golden rice is less expensive to grow and harvest than white rice. 
C. golden...
Eukaryote 
: An organism whose cells contain complex structures enclosed within membranes. The 
defining membrane bound structure thats sets them apart from prokaryotic cells is the 
nucleas or nuclear envelope within which the genetic material is carried. All species of large 
complex species ar...
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Add to cartEukaryote 
: An organism whose cells contain complex structures enclosed within membranes. The 
defining membrane bound structure thats sets them apart from prokaryotic cells is the 
nucleas or nuclear envelope within which the genetic material is carried. All species of large 
complex species ar...
Both amino acids and nucleotides form complex chains. Select all the answers below that 
are accurate. 
A. The chains formed by both have polar phosphate groups. 
B. Both contain peptide bonds. 
C. Both contain nitrogen. 
D. The chains formed by both can be lysed by trypsin. 
E. The sequence of cha...
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Add to cartBoth amino acids and nucleotides form complex chains. Select all the answers below that 
are accurate. 
A. The chains formed by both have polar phosphate groups. 
B. Both contain peptide bonds. 
C. Both contain nitrogen. 
D. The chains formed by both can be lysed by trypsin. 
E. The sequence of cha...
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