SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Organic compound whose carbon skeleton is composed of 2 or more 5- carbon isoprene structural units. It is formed by joining the tail of one isporene structural unit to the head of another. Includes Vitamin A.
ptyalin
movable joints
Terpene
mitochondria
2. A form of external male pseudohermaphroditism - characterized by the lack of androgen receptors in the external genitalia: these individuals have testes - but the body and the external genitalia are female. They typically have a rudimentary vagina -
hypercapnia
arteries
carbohydrate
testicular feminization
3. Organ of the female reproductive system in which a fertilized egg can develop
composite cell
uterus
atrioventricular node
carboxyhemoglobin
4. Tissue consisting of long muscle cells that are capable of contracting when stimulated by nerve impulses. Three types skeletal - cardiac - and smooth.
Muscle Tissue
proton motive force
Nervous Tissue
oxidation
5. Series of anaerobic chemical reactions in which pyruvic acid uses NADH to form lactic acid and NAD+ - which is then used in glycolysis; supplies energy when oxygen for aerobic respiration is scarce
ATP
scrotum
lactic acid fermentation
primary spermatocytes
6. The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron
concentration gradient
vasa recta
haversian canal
synapse
7. The two upper chambers of the heart - the receiving areas that pool incoming blood.
secondary spermatocytes
archenteron
hypoglycemia
atria
8. Water passively moves out - esp - in hypertonic medulla. Deeper more hypertonic=more H2O absorbed by kidney.
thick filaments
somatostatin
descending limb
umbilical cord
9. Person with type AB blood who can recieve any blood because it has no antibodies
amino acids
Lysosomes
universal recipient
osteons
10. Joint that allows range of movement
pineal gland
movable joints
effector cell
hypercapnia
11. A type of glucocorticoid released by the adrenal cortex. It converts amino acids to glucose - helps to breakdown fats to fatty acids. Decreases glucose uptake by the muscles and increases blood sugar in response to stress. Strong anti - inflammatory
spermatogonia
cortisol
clot
inorganic phosphate
12. The fourth of meiosis I. Telophase I is identical to mitotic telophase - except that the number of chromosoms is now reduced by half. After this phase the cell is considered to be haploid. Note however - that the chromosomes are still replicated - an
abductor
medulla oblongata
telophase I
Cytochromes
13. The opening of the archenteron in the gastrula that develops into the mouth in protostomes and the anus in deuterostomes
blastopore
Proline
tendons
Solvation
14. The junction between a nerve fiber and the muscle it supplies
periosteum
Phospholipid
cilia
neuromuscular junction
15. A substance found in blood plasma that is the precursor to thrombin in the coagulation of blood
surfactant
prothrombin
angiotensin I
cascade effect
16. The smooth ER of a muscle cell - enlarged and specialized to act as a Ca2+ reservoir. The SR winds around each myofibril in the muscle cell.
allosteric inhibitor
deuterstomes
complementary pairing
sarcoplasmic reticulum
17. Specific immunity produced by B cells that produce antibodies that circulate in body fluids
skeletal muscle
humoral immunity
apoenzyme
archenteron
18. Also known as adenylyl cyclase - adenyl cyclase or AC) is a lyase enzyme. It is a part of the cAMP- dependent pathway catalyzes the conversion of ATP to 3' -5'- cyclic AMP (cAMP) and pyrophosphate
medulla oblongata
adenylate cyclase
membrane carrier
indeterminate cleavage
19. An organelle containing its own DNA and ribosomes within a eukaryotic cell
motor neuron
goiter
semiautonomous
osteocytes
20. The male gonads - which produce sperm and secrete male sex hormones.
proenzyme
fermentation
testes
cortical sex hormones
21. Connects the left and right atria - allowing blood to flow directly from the right to the left side of the heart
GH
supierior vena cava
gastric glands
foramen ovale
22. A mixed nerve that supplies the pharynx and larynx and lungs and heart and esophagus and stomach and most of the abdominal viscera
tertiary structure
vagus nerve
Hcg
negative pressure breathing
23. Relatively massive bundles of subunits composed of the protein myosin that can reach 15nm in diameter
blood vessel
ATP synthetase
surfactant
thick filaments
24. Bone marrow of children and some adult bones that is required for the formation of red blood cells
red marrow
gamete
cortical sex hormones
fallopian tube
25. The part of the large intestine that ascends from the cecum to the transverse colon
Primary structure
pyruvate decarboxylation
granular leukocytes
ascending colon
26. The movement of substances into or out of cells without the expenditure of energy or the involvement of transport proteins in the cell membrane. Also called simple diffusion.
passive diffusion
heart rate
Glycosylation
negative pressure breathing
27. Compounds made of a metal and nonmetal that are formed when acids and bases react
prophase
dermis
salts
blood vessel
28. 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
vacuole
epithelial tissue
gland cells
globular protein
29. 2 phosphate together can be used for energy in place of ATP Ex.Archea
pyrophosphate
pyloric sphincter
pancreas
anaphase
30. Contraction of diaphragm and the intercostal muscles - increasing thoracic volume - reducing pressure in the intrapleural space creating a vacuum that causes the lungs to suck in air - as well as draw in blood from the rest of the body (particularly
chemoreceptors
bulbourethral gland
negative pressure breathing
obligatory base pairing
31. 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'
apoenzyme
goiter
CRF
clot
32. Lymphocytes that inhibit helper T cells and cytotoxic cells by negative feedback. They also prevent B lymphocytes from transforming into plasma cells. These cells provide the means by which the immune response can be shut down
suppressor T cells
synergistic muscle
hyperglycemia
afferent arteriole
33. The widening of the chambers of the heart between two contractions when the chambers fill with blood
primary response
negative pressure breathing
diastole
cell mediated immunity
34. Veins in the neck that return blood from the head
blood vessel
jugular vein
sister chromatids
Protein
35. A protein present in muscle fibers that aids in contraction and makes up the majority of muscle fiber
myosin
gall bladder
Glycosylation
relative refractory period
36. An enzyme complex in the inner membrane of a mitochondrion and the thylakoid membrane of a chloroplast that catalyzes the formation of ATP.
inhibiting hormones
ATP synthetase
cecum
hydrostatic pressure
37. A fluid - filled sphere formed about 5 days after fertilization of an ovum that is made up of an outer ring of cells and inner cell mass. THis is the structure that implants in the endometrium of the uterus.
blastocyst
semilunar valve
thrombin
nucleotides
38. In the testes - these cells lie between the seminiferous tubules and produce the hormone testosterone
Glycolipids
interstitial cells
bile
enzyme substrate complex
39. Generalized edema with accumulation of serum in subcutaneous connective tissue
microbodies
carbonic anhydrase
IgD
anasarca
40. The female gonads - paired almond - sized organs located in the pelvic cavity - and produce two steroid hormone groups the estrogns and pregesterone. The endocrine and exocrine functions do not begin until the onset of puberty.
ovaries
parasympathetic nervous system
endoplasmic reticulum
Cytochromes
41. The most abundant type of RNA - which together with proteins froms the structure of ribosomes. Ribosomes coordinate the sequential coupling of tRNA molecules to mRNA codons; also called ribosomal RNA.
chaperonins
acrosome
rRNA
prophase
42. An animal that maintains a controlled internal body temperature using its own heating and cooling mechanisms
endometrium
oxygen debt
homeotherm
oogenesis
43. Development of the nervous system
stratum corneum
neurulation
erythroblastosis fetalis
Hydrophobic
44. The organs that hormones act on to either increase or decrease the organ's activity level.
absolute refractory period
target organs
microbodies
indeterminate cleavage
45. Pressure that has already developed in a solution due to osmosis.
lymph capillaries
actual osmotic pressure
primary response
lactic acid fermentation
46. Minerals that carry electrical charges that help maintain the body's fluid balance
cytochrome oxidase
reticular layer
electrolytes
synovial fluid
47. The part of the small intestine between the stomach and the jejunum
inorganic phosphate
metaphase II
mineralcorticoids
duodenum
48. Any nonprotein molecule or ion that is required for the proper functioning of an enzyme. Cofactors can be permanently bound to the active site or may bind loosely with the substrate during catalysis.
Cellulose
compounds
Cofactor
passive diffusion
49. Of or relating to organisms (as green plants) that can make complex organic nutritive compounds from simple inorganic sources by photosynthesis
posterior pituitary
autotrophic
fallopian tube
Lipids
50. The path molecules travel when an imbalance between separated molecule concentrations exists
virus
prostate gland
universal donor
concentration gradient