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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. A type of intercellular junction in animal cells that allows the passage of material or current between cells
gap junction
snRNP
visceral pleura
GnRH
2. This multiprotein complex in the ETC catalyzes the transfer of the electrons to oxygen
thalamus
cytochrome oxidase
epidermis
ejaculatory duct
3. A metabolic process that breaks down carbohydrates and sugars through a series of reactions to either pyruvic acid or lactic acid and release energy for the body in the form of ATP - the anaerobic breakdown of glucose to pyruvic acid - which makes a
diploid
dizygotic twins
Chylomicrons
glycolysis
4. A short - branched polysaccharide with short - linear amylose branches that are typically 20-30 subunits
immunoglobulin
thermoregulation
umbilical chord
amylopectin
5. Colorless watery fluid of blood and lymph containing no cells and in which erythrocytes and leukocytes and platelets are suspended
steroid hormones
myogenic activity
FMN
plasma
6. Part of the Loop of Henle that removes Sodium from the blood. - Reabsorption of ions; creates the concentration gradient in the medulla - enabling the kidney to produce concentrated urine
homoeostasis
norepinephrine
ascending limb
gastrula
7. A group of hereditary bleeding disorders in which there is a defect in clotting factors necessary for the coagulation of blood
cytochrome oxidase
parasympathetic nervous system
steroid hormones
hemophilia
8. Hormone secreted by the hypothalamus that can suppress secretion of hormones by the anterior pituitary
nuclear pore complex
inhibiting hormones
composite cell
cytosol
9. Small organelles filled with enzymes; one function is to break down lipids - carbohydrates - and proteins from food particles; may also break down old cell parts. enzymes are maximally effective at a pH of 5 and they fuse with endocytic vacuoles to b
norepinephrine
cortisone
hypophysis
Lysosomes
10. A four - carbon molecule that binds with the two - carbon acetyl unit of acetyl - CoA to form citric acid in the first step of the Krebs cycle.
somatotropin
oxaloacetate
allosteric effector
deamination
11. The hollow muscular organ located behind the sternum and between the lungs
heart
lymphocytes
osteoclasts
Cellulose
12. A glycoprotein in the extracellular matrix of animal cells that forms strong fibers - found extensively in connective tissue and bone; the most abundant protein in the animal kingdom.
cyanobacteria
enzyme
collagen
descending limb
13. Binds more oxygen in red blood cells than adult hemoglobin - to aide in transferring oxygen across placenta.
glucocorticoids
Saturated fatty acids
fetal hemoglobin
T cells
14. Hard - dense bone tissue that is beneath the outer membrane of a bone
thick filaments
polyribosome
compact bone
cell adhesion proteins
15. Pleura that lines the inner chest walls and covers the diaphragm
parietal pleura
maltase
apoenzyme
phophodiesterase
16. Person with type AB blood who can recieve any blood because it has no antibodies
mucous cells
universal recipient
flagella
Nucleotide
17. The immune reaction that occurs the first time a person is exposed to a particular antigen. protective antibodies appear about 3-6 days while naive B cells multiply and differentiate into plasma cells. causes the level in the blood plasma to rise. Ig
primary response
ANS
trypsinogen
anaphase II
18. Neurohormone secreted by the heart in response to ventricular expansion. Elevated greater than 100 pg/mL indicates some heart failure
homologous chromosomes
epinephrine
angiotensin II
BNP
19. Stack of membranes in the cell that modifies - sorts - and packages proteins from the endoplasmic reticulum. Recieves vesicles and their contents from smooth ER.
glucagon
cortical sex hormones
synovial capsule
Golgi apparatus
20. Hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells
amniotic fluid
thyroxine
visceral pleura
reticular fibers
21. Synthesised from ATP by adenylyl cyclase located on the inner side of the plasma membrane. Adenylyl cyclase is activated by a range of signaling molecules through the activation of adenylyl cyclase stimulatory G (Gs)- protein - coupled receptors and
antigen
pituitary gland
cortical sex hormones
amino acid derived hormones
22. Time between application of a stimulus and the beginning of a response in a muscle fiber
immune cells
epinephrine
latent period
ketoacidosis
23. A solid ball of cells that makes up an embryo; in humans - this stage occurs within four days of fertilization.
endochondral ossification
chaperonins
homeotherm
morula
24. Fluid within the amniotic sac that surrounds and protects the fetus
spliceosome
amniotic fluid
abductor
metaphase I
25. Gland that releases its secretions through tubelike structures called ducts
descending limb
metaphase
Haploid cell
exocrine glands
26. One of the formed elements present in our blood. They function in hemostasis (blood clot formation). They are cell fragments of large multinucleate cells (megakaryocytes) formed in the bone marrow. They appear to be irregular - darkly stained shapes.
ductus venosus
internal intercostal muscles
platelets
apoptosis
27. Dynamic tissue undergoing constant remodeling due to internal and external forces - weight bearing and muscle contraction encourages stronger bone - limited or non - weight bearing and bed rest decrease bone strength
second messenger
Binary fission
bone remodeling
carbohydrate
28. The class of immunoglobulin having
endoderm
NAD
IgM
memory cell
29. Given to control diabetes insipidus and promote reabsorption of water in the kidney tubules.
inhibiting hormones
translation
vasopressin
metaphase I
30. Bone marrow of children and some adult bones that is required for the formation of red blood cells
haversian canal
red marrow
H band
hypertonic solution
31. A class of fatty acids that regulate blood vessel vasodilation - temperature elevation - WBC activation - and other physiologic processes involved in immunity.
cytotoxic T cells
glycolytic pathway
Eicosanoid
vacuole
32. Organic compound with a backbone of three carbon atoms. Two molecules form as end products of glycolysis
prothrombin
pyruvate
follicular phase
myosin binding sites
33. Lacking affinity for water
osteoclasts
scrotum
microfilaments
Hydrophobic
34. Cells created in the thymus that produce substances that attack infected cells in the body.
thyroxine
buffers
urethra
T cells
35. The increase in concentration of solutes from the cortex to the medulla - allows for urine hypertonicity
side chain
osmolarity gradient
deuterstomes
FADH
36. Membrane - bound space in the cytoplasm of cells used for the temporary storage of materials. Are larger than vesicles and are more likely found in plant cells.
cortical sex hormones
vacuole
atrial natriuretic hormone
oxaloacetate
37. Contains centers that control several visceral functions - including breathing - heart and blood vessel activity - swallowing - vomiting - and digestion.
somatostatin
Denaturation
medulla oblongata
homoeostasis
38. A lymphocyte that matures in the bone marrow; after encountering an antigen - it will differentiate into antibody- secreting plasma cells (effector cells of humoral immunity)
follicular phase
hypophysis
mesenchyme
B lymphocyte
39. A thin layer of cells that line the interior surface of the blood vessels - forming an interface between circulating blood in the lumen and the rest of the vessel wall. Simple squamous epithelium.
reduction
endothelial cell
goiter
relaxation period
40. The passage between the pharynx and the stomach
end product inhibition
emulsification
HCl
esophagus
41. Drains away fluid so that it does not accumulate in the tissues of our body.
lymph capillaries
exon
haversian canal
desmosomes
42. Tissue that connects bone to bone
metaphase
chondrocytes
GH
ligaments
43. Any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
lactase
inner cell mass
chondrin
forces creating tertiary structure
44. In immune network theory - an idiotope - an antigenic site of an antibody that is responsible for that antibody binding to an antigenic determinant (epitope).
bowmans capsule
antigen binding site
placenta
secretion
45. The middle primary germ layer of an early embryo that develops into the notochord - the lining of the coelom - muscles - skeleton - gonads - kidneys - and most of the circulatory system
tonus
lymphokines
T lymphocyte
mesoderm
46. Series of events that cells go through as they grow and divide
humoral immunity
vasopressin
afferent arteriole
cell cycle
47. Produce about 60% of seminal fluid - these are located at the posterior wall of the urinary bladder close to the terminus of the ductus deferens. They produce a substance that nourishes the sperm passing through the tract or that promote the fertiliz
seminal vesicles
thyroid gland
autotrophic
flagella
48. Inactivity resulting from torpidity and lack of vigor or energy
acrosome
torpor
hypophysis
gastrin
49. Generation of glucose from non - sugar carbon substrates like pyruvate - lactate - glycerol - and amino acids The vast majority takes place in the liver and - to a smaller extent - in the cortex of kidney. This process occurs during periods of fastin
gluconeogenesis
amino acid residue
endoskeleton
synaptic bouton
50. For very fatty foods - the duodenum releases this hormone to slow down the release of chyme by the stomach. (Fats take longer to digest).
Lysosomes
enterogastrone
peptide hormones
circadian rythms
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