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Test your basic knowledge |
MCAT Biology 2
Start Test
Study First
Subjects
:
mcat
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Pressure that has already developed in a solution due to osmosis.
granular leukocytes
carbohydrate
cascade effect
actual osmotic pressure
2. Inactivity resulting from torpidity and lack of vigor or energy
yolk sac
torpor
side chain
synovial fluid
3. From the umbilical vein - where most of the fetal blood flows through the liver
myoglobin
movable joints
ductus venosus
lipoprotein
4. An animal that maintains a controlled internal body temperature using its own heating and cooling mechanisms
cervix
homeotherm
pyloric glands
polyribosome
5. Assist the enzyme by building the enzyme on a site other than the active site to boost the activivty.
composite cell
periosteum
allosteric activators
adductor
6. Cells found in gastric glands that secrete hydrochloric acid (for hydrolysis of ingested food) and gastric intrinsic factor (for absorption of vitamin B-12).
activation energy
atrioventricular valves
parietal cells
LH
7. One of the main pancreatic proteases; it is activated (from chymotrypsinogen) by trypsin.
zymogen
fallopian tube
chymotrypsin
angiotensin II
8. This multiprotein complex in the ETC catalyzes the transfer of the electrons to oxygen
glycolysis
proton gradient
polar body
cytochrome oxidase
9. Exocrine gland - in men - at the base of the urinary bladder that secretes the fluid part of semen into the urethra during ejaculation
acromegaly
sarcoplasmic reticulum
prostate gland
androgens
10. Thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles - birds and mammals)
amnion
cecum
larynx
phagocytosis
11. Measurement of amount of blood ejected from a ventricle in one contraction
haversian canal
movable joints
stroke volume
allosteric effector
12. The regular fluctuation - within a 24- hour period - from high to low points of certain bodily functions and behavior; sleep wakefulness cycle and body temperature
buffers
portal systems
circadian rythms
prothrombin
13. Gel consisting of a network of insoluble protein fibers
light chains
veins
interphase
clot
14. Glands of the endocrine system that release hormones into the bloodstream
endocrine glands
ANS
duodenum
linked genes
15. Hormone secreted by the hypothalamus that can suppress secretion of hormones by the anterior pituitary
polar body
yellow marrow
pituitary gland
inhibiting hormones
16. The outermost of the three primary germ layers in animal embryos; gives rise to the outer covering and - in some phyla - the nervous system - inner ear - and lens of the eye
thymosin
ectoderm
neural tube
pyruvate
17. After completing meiosis I - these are produced along with a polar body and are released into the fallopian tube.
secondary oocytes
supierior vena cava
zymogen
action potential
18. The valves in the heart that separte the atria from teh ventricles. The tricuspid valve separates teh right atrium from the right ventricel - and the bicuspid (mitral) valves separates the left atrium from the left ventricle. These valves close at th
articular cavity
atrioventricular valves
chief cells
autotrophic
19. Animal embryo development stage where cells on one side of the blastula move inward forming a cavity of two or three layers of cells with an opening at one end
somatostatin
gastrula
simple diffusion
melanin
20. A duct that carries spermatozoa from the epididymis to the ejaculatory duct
vas deferens
granular leukocytes
Mitotic phase
cardiac sphincter
21. Fine - collagenous fibers whose networks surround and support the soft tissue of organs - and stabilize the positions of functional cells
parathyroid glands
internal intercostal muscles
reticular fibers
B lymphocyte
22. Also called the birth canal - canal in the female from the vulva to the cervix that receives the penis in intercourse
parasympathetic nervous system
TRH
vaginal canal
Golgi apparatus
23. Granular material visible within the nucleus; consists of DNA tightly coiled around proteins
prophase
chromatin
fermentation
competitive inhibition
24. Activated in the duodenum by enterokinase - which is produced in the cells lining the duodenum
trypsinogen
cell adhesion proteins
action potential
oxygen debt
25. A virus that is parasitic in bacteria. injects its nucleic acid into a bacterial cell.
bacteriophage
Chylomicrons
Cofactor
Lysosomes
26. A protein that folds into a compact shape so that the polar and ionic amino acids are on the outside and the nonpolar amino acids are on the inside. They function as enzymes - hormones - membrane pumps and channels - membrane receptors andinter/intra
glycolysis
foramen ovale
oxidation
globular protein
27. Corticotropin releasing factor; secreted by hypothalamus and stimulates the pituitary gland and activated adrenal gland and then get the release of corisol as part of the 'stress response'
sister chromatids
CRF
fight or flight response
variable regions
28. Small cavities in the bone or cartilage that hold individual bones or cartilage cells.
blastula
Receptors
zona pellucida
lacunae
29. Complete 'active enzyme'. Includes an apoenzyme attached to a coenzyme
osteoclasts
calcitonin
fetal gas exchange
holoenzyme
30. Simplest starch which is a long unbranching chain of glucose molecules has the same alpha linkages as glycogen
bone matrix
Phospholipid
functional groups
amylose
31. A specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and usually involved in chemical reactions.
G2 phase
cilia
functional groups
FMN
32. Smooth muscle and cardiac muscle has the property of flexing without nervous stimulation called...
myogenic activity
enzyme substrate complex
peristalsis
pyloric glands
33. A chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.
microvilli
mitochondrial matrix
ACTH
Dehydration synthesis
34. Layer of bone tissue having many small spaces and found just inside the layer of compact bone.
spongy bone
histamine
cascade effect
pyruvate decarboxylation
35. A reaction in which the conversion of reactants into products and the conversion of products into reactants occur simultaneously
stroke volume
thin filaments
androgens
reversible reaction
36. Lipoproteins formed in the cells lining the small intestine following absorption of fats. they are made in the small intestinal cells and transpost dietary lipids to the liver.
respiratory surface
atrioventricular valves
chondrin
Chylomicrons
37. A blood protein essential to blood clotting. The conversion of fibrinogen to its active form (fibrin) is among the final steps in clot formation - and is triggered by thrombin.
fibrinogen
umbilical cord
Muscle Tissue
lipases
38. A measuring instrument for measuring the vital capacity of the lungs
ptyalin
autosomal cell
chemiosmosis
spirometer
39. Released from the hypothalamus to act on the pituitary gland. It inhibits the secretion of somatotropin(growth hormone)
endoderm
interferons
somatostatin
plasma
40. An enzyme that catalyzes the elongation of new DNA at a replication fork by the addition of nucleotides to the existing chain.
Lysosomes
budding
hypertonic
DNA polymerase
41. The path molecules travel when an imbalance between separated molecule concentrations exists
seminal fluid
Terpene
myoglobin
concentration gradient
42. Duct through which urine is discharged in most mammals and which serves as the male genital duct
side chain
threshold value
neurulation
urethra
43. The breakdown of carbohydrates by enzymes - bacteria - yeasts - or mold in the absence of oxygen
exon
intrapleural space
Mitotic phase
fermentation
44. Microtubules and fibers that radiate out from the centrioles
glycolytic pathway
TSH
asters
goiter
45. Any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes - thus producing an immune response
spermatozoa
exocrine glands
decomposition reaction
antibody
46. The fourth and final phase of meiosis II. Telophase II is identical to mitotic telophase - except that the number of chromosomes was reduced by half during meiosis. I.
reabsorption
atrial natriuretic hormone
telophase II
Cofactor
47. The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it
IgA
neurulation
semiautonomous
appendicular skeleton
48. A type of lymphocyte responisble for cell - mediated immunity that differentiates under the influence of the thymus
T lymphocyte
cell cycle
budding
obligate intracellular parasite
49. Substance produced by the body that inactivates or destroys another substance that is introduced into the body; antibody
immunoglobulin
seminal vesicles
prophase
ATP
50. New combination of genetic information in a gamete as a result of crossing over during prophase I of meiosis
citric acid cycle
genetic recombination
facilitated diffusion
prokaryotes