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. A muscle that draws a part away from the median line
loop of henle
hypothyroidism
abductor
Nucleic acids
2. The spiny sublayer just below the stratum ganulosum contains cells that create an immune response to protect the body against foreign bodies that get through the first three outer sublayers of skin
route of blood flow
gap junction
stratum spinosum
Facilitated diffusion
3. A small cellular inclusion consisting of a ring of DNA that is not in a chromosome but is capable of autonomous replication
GH
plasmid
telopahse
Connective tissue
4. Used to assess the rates at which enzymatic reactions occur /Will focus primarily on initial reaction rates measured over time /Influenced by a variety of factors : Concentrations of substrates - products and inhibitors
relaxation period
enzyme kinetics
beta cells
autotrophic
5. The activated form of the blood - clotting protein fibrinogen - which aggregates into threads that form the fabric of the clot.
ADH
fibrin
carboxypeptidase
tertiary structure
6. Time between application of a stimulus and the beginning of a response in a muscle fiber
nucleolus
latent period
mesoderm
fibrin
7. Rope - like strands of protein that help to form desmosomes and resist pulling forces on the cell - Threadlike proteins in the cell's cytoskeleton that are roughly twice as thick as microfilaments
intermediate filaments
effector cell
Fatty acids
fibrinogen
8. The process by which the positive and negative ions of an ionic solid become surrounded by solvent molecules
chemoreceptors
insulin
Solvation
plasma
9. Blind U- shaped pouch that is the first portion of the large intestine
osteoblasts
cecum
essential amino acids
macrophages
10. The form of sugar that circulates in the blood and provides the major source of energy for body tissues. When its level is low - we feel hunger. Accounts for 80% of carbs absorbed by humans.
lymphocytes
testosterone
Glucose
PKU
11. Proteins with short chains of sugars attached to them; in eukaryotic cells they are important membrane proteins that allow cell - cell recognition and interaction.
chaperonins
epiphyseal plate
Glycoproteins
chymotrypsinogen
12. Any of several quinones that function as electron - carrying coenzymes.
hypercapnia
yellow marrow
ubiquinone
trypsin
13. The outer layer of the skin covering the exterior body surface of vertebrates
veins
epidermis
amylopectin
crossing over
14. Mature spermatids that are fully functional and capable of fertilizing a human ovum
gametocytes
spermatozoa
Osmosis
cell division
15. 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.
end product inhibition
homologous chromosomes
platelets
fetus
16. Monomer of nucleic acids made up of a 5- carbon sugar - a phosphate group - and a nitrogenous base
immune response
ovum
cytoskeleton
nucleotides
17. Condition of hyposecretion of the thyroid gland causing low thyroid levels in the blood that result in sluggishness - slow pulse - and often obesity
hypothyroidism
aorta
clot
angiotensin II
18. A muscle that draws a part toward the median line
adductor
uterus
gland cells
autotrophic
19. 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
ascending limb
bone resorption
protostomes
creatine phosphate
20. Forms the main trunk of the body and is composed of the skull - spinal column - ribs - and breastbone
induction
lactic acid
acidosis
axial skeleton
21. Where myosin heads can attach. 2 proteins usualy cover the locations of attachments for the myosin heads: troponin and tropomyosin.
Vmax
myosin binding sites
vulva
melanocyte
22. A globular protein that links into chains - two of which twist helically about each other - forming microfilaments in muscle and other contractile elements in cells.
actin
heterotrophic
thromboplastin
enterokinase
23. Glyceraldehyde phosphate; a three - carbon molecule formed in the second step of the Calvin cycle that can leave the cycle and be used to make other organic compounds
arteries
Meiosis II
villi
PGAL
24. The division of the autonomic nervous system that arouses the body - mobilizing its energy in stressful situations
alpha cells
ovum
external intercostal muscles
sympathetic nervous system
25. Organ in placental mammals through which nutrients - oxygen - carbon dioxide - and wastes are exchanged between embryo and mother
GH
Passive immunity
IgM
placenta
26. The period of the cell cycle during which the nucleus is not undergoing division - typically occurring between mitotic or meiotic divisions
Interphase
actual osmotic pressure
endothelial cell
threshold value
27. A chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g. - oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond
stratum corneum
actin
specific defense mechanism
hydrogen bond
28. Aid in expiration by contracting to pull the ribs downward and decrease the volume of the thoracic cavity (internal intercostal muscles originate in the inferior rib and insert on the superior rib)
internal intercostal muscles
spermatozoa
Vmax
lymph nodes
29. Any of the many tiny canals that contain blood vessels and connective tissue and that form a network in bone
haversian canal
Meiosis II
autotrophic
smooth muscle
30. An organism that uses energy to control its internal environment
immovable joints
metaphase
ovaries
regulator
31. Additional looping vesels of the juxtamedullary nephrons - that parallel the long loops of Henle in the medulla.
microfilaments
androgens
vasa recta
microbodies
32. Minerals that carry electrical charges that help maintain the body's fluid balance
Glycosylation
electrolytes
parietal cells
hromosome replication
33. Any substance (as a toxin or enzyme) that stimulates the production of antibodies
vulva
ectoderm
bundle of his
antigen
34. Gel consisting of a network of insoluble protein fibers
clot
vaginal canal
fight or flight response
umbilical arteries
35. Cortisol and Cortisone are types of these hormones - produced in the Adrenal cortex - which increase blood glucose levels through stimulation of gluconeogenesis and the decrease of protein synthesis. They also reduce the body's immunological and infl
lymph nodes
bacteriophage
glucocorticoids
plasmid
36. 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
blastula
Phospholipid
plasma cell
ectoderm
37. Wavelike contraction of the walls of the intestines - which propels contents onward
peristalsis
proton gradient
dialysis
tetanus
38. Abnormally low blood sugar usually resulting from excessive insulin or a poor diet
Glucose
NADP
platelets
hypoglycemia
39. Last part of the renal tubule; where secretion of ions - acids - drugs - and toxins takes place - Between the loop of Henle and the collecting duct; Selective reabsorption and secretion occur here - most notably to regulate reabsorption of water and
oral cavity
distal convoluted tubule
epiglottis
ctive site
40. The side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis
osteocytes
gluconeogenesis
centrioles
synapsis
41. Organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells
Nucleic acids
cytokinesis
side chain
thermoregulation
42. Mucus - secreting membrane lining all body cavities or passages that communicate with the exterior
light chains
secondary active transport
Vmax
mucosa
43. Comes in at a site other than active site but alters shape of enzyme so it can no longer bind reactants
noncompetitive inhibition
oncotic pressure
bone resorption
prostate gland
44. The extraembyonic membrane of birds - reptiles and mammals that serves as an area of gaseous exchange and as a site for the storage of noxious excretion products
end product inhibition
chymotrypsin
supierior vena cava
allantois
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
antibody
salts
endoderm
cretinism
46. This poison that can carru protons across inner membrane; uncouples the electron transport chain from the proton gradient established across the inner mitochondrial membrane.
dinitrophenol
osmotic pressure
Dehydration synthesis
cristae
47. A protein present in muscle fibers that aids in contraction and makes up the majority of muscle fiber
IgE
macrophages
myosin
emulsification
48. Activated in the duodenum by enterokinase - which is produced in the cells lining the duodenum
tonus
competitive inhibition
systole
trypsinogen
49. A fatty acid possessing one or more double bonds between the carbons in the hydrocarbon tail. Such bonding reduces the number of hydrogen atoms attached to the carbon skeleton.
acidosis
Unsaturated fatty acid
Hydrogen Bond
tRNA
50. Units in the microscopic structure of mammalian bone. layers of mineralized matrix are deposited around a central canal containing blood vessels and nerves that service the bone
vacuole
neural folds
haversian systems
antigen binding site