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. One of the main pancreatic proteases; it is activated (from chymotrypsinogen) by trypsin.
reticular layer
cell adhesion proteins
chymotrypsin
luteal phase
2. A cell of the gastric glands that secretes pepsinogen (breaks down protein) and gastric lypase
angiotensin I
myosin
chief cells
ductus venosus
3. Type of enzyme regulation that is stored in inactive forms in the body until it is needed. When needed - cleaves bonds to give active form of the enzyme. Called 'Proteolytic Activity' at that point.
abductor
proenzyme
flagella
telophase II
4. Blood vessels that carry blood from the heart to the tissues
arteries
trachea
prostate gland
synovial fluid
5. Connects the embryo to the placenta; moves food and oxygen from the placenta to the embryo and removes the embryo's waste products
hyperglycemia
polar body
flagella
umbilical chord
6. Part of the electron transport chain. A process occurring in the mitochondria that results in the formation of ATP from the flow of electrons across the inner membrane to bind with oxygen.
sucrase
fight or flight response
BNP
oxidative phosphorylation
7. Membranous tissue covering internal organs and other internal surfaces of the body. Covers the surface of the body.
glucagon
cyanobacteria
yolk sac
epithelial tissue
8. Proteins with short chains of sugars attached to them; in eukaryotic cells they are important membrane proteins that allow cell - cell recognition and interaction.
absolute refractory period
pyrophosphate
Glycoproteins
hydrogen bond
9. The process in which a different substrate goes into the active site of an enzyme - thus shutting down the enzyme and not allowing it to function
cecum
foramen ovale
thromboplastin
competitive inhibition
10. Synaptic gap or synaptic space; tiny gap between the terminal of one neuron and the dendrites of another neuron (almost never touch); location of the transfer of an impulse from one neuron to the next
TSH
synaptic cleft
filtration
synapsis
11. Made from cholesterol. Composed of 4 carbon rings attached to distinctive side chains that determine the unique properties of the hormones. Hydrophobic and fat soluble.
steroid hormones
stratum granulosum
secretin
lactic acid fermentation
12. Located in the center of the brain - functioning to secrete melatonin and serotonin
Lysosomes
nucleotides
cardiac muscle
pineal gland
13. The small artery that carries blood toward the capillaries of the glomerulus.
proximal end
immune response
vulva
afferent arteriole
14. An electron - proton - or neutron; one of the three major particles of whoch atoms are composed
lymphatic system
subatomic particle
aldosterone
antibody
15. Organ that completes the chemical digestion of food and absorbs the nutrients
small intestine
chemoreceptors
disulfide linkages
effector cell
16. A small cell containing little cytoplasm that is produced along with the oocyte and later discarded
polar body
hemoglobin
PNS
lower esophageal sphincter
17. Outer cells of the blastocyst that secrete enzymes that allow implantation
trophoblast
primary spermatocytes
Rh factor
inhibiting hormones
18. Tough fibers of the extracellular matrix. They are made of collagen that are nonelastic and do not tear easily when pulled lengthwise.
collagenous fibers
myosin binding sites
arteries
Prostaglandins
19. Endocrine cells in the islets of Langerhans of the pancreas. They synthesize and secrete the peptide GLUCAGON - which increases glucose levels in the blood
alpha cells
immune cells
alcohol fermentation
neural tube
20. Attracts a solute molecule to a binding site
membrane carrier
flagella
intramembranous ossification
follicular phase
21. Respond to water - soluble and lipid - soluble substances that are dissolved in the surrounding fluid. They monitor the chemical composition of body fluids
IgE
telopahse
facilitated diffusion
chemoreceptors
22. Amino acids that an animal cannot synthesize itself and must be obtained from food. Eight of these are essential in the human adult.
essential amino acids
HRH
ovum
appendicular skeleton
23. Person with type AB blood who can recieve any blood because it has no antibodies
caveolae
universal recipient
circadian rythms
motor neuron
24. Lipid substances with linked sugar groups that are key structural elements in cell membranes and precursors of other biologically active molecules important in cell signaling.. Are also amphipathic and are found in myelinated cells composing the huma
renin
Glycolipids
ejaculatory duct
parietal pleura
25. Has both a hydrophilic (polar) phosphoric acid and a hydrophobic (non - polar) fatty acid region. Hydrophilic regions are found on the outside of the membrane and hydrophobic regions are found on the interiorof the membrane. Structure allows for sele
virus
holoenzyme
Phospholipid bilayer
small intestine
26. Promote the action of the killer T cells and play key roles in humoral immunity and nonspecific defense. All other T cells are involved in cellular immunity only
renin
enterokinase
helper T cells
prostaglandins
27. Strand of Actin. Each actin has an active site that can interact with Myosin. Active sites are covered by tropomyosin strands - which are held in place by Troponin.
thin filaments
telophase I
corona radiata
osteoporosis
28. Diploid cells resulting from the activation of an oogoium; primary oocytes are ready to enter meiosis I. remember: cyte means ready to undergo meiosi
efferent arteriole
autotrophic
primary oocytes
regeneration
29. The outer portion of the kidney containing bownam's capsule - proximal - distal convoluted tubules - and associated blood vessels.
anterior pituitary
secondary response
dense connective tissue
renal cortex
30. 1) is the 2nd and deepest layer of the dermis. 2) Compose of Dense Irregular CT. 3) Contains interlacing Collagen and Elastic Fibers. 4) Is packed with oil glands - sweat gland ducts - fat - and hair follicles. 5) It provides strength - extensibility
extracellular digestion
reticular layer
angiotensin I
ADH
31. Large cells that resorb or break down bone matrix - releasing calcium ions into the blood
potential osmotic pressure
osteoclasts
cyanobacteria
gamete
32. The two types of white blood cells that are part of the body's immune system: B lymphocytes form in the bone marrow and release antibodies that fight bacterial infections; T lymphocytes form in the thymus and other lymphatic tissue and attack cancer
adductor
lymphocytes
dinitrophenol
Denaturation
33. Organ in placental mammals through which nutrients - oxygen - carbon dioxide - and wastes are exchanged between embryo and mother
Fatty acids
troponin
second messenger
placenta
34. The passage between the pharynx and the stomach
esophagus
prolactin
crossing over
arteries
35. NORMAL STATE of BALANCED MUSCLE TENSION PRESENT In BODY WHEN One Is AWAKE
blood vessel
signal transduction
S phase
tonus
36. An enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose
mitochondria
sucrase
lymphocytes
cartilage
37. First and longest phase of mitosis - during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus
tidal volume
lungs
mucous cells
prophase
38. Organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells
cytokinesis
follicles
mesoderm
functional groups
39. Monomer of nucleic acids made up of a 5- carbon sugar - a phosphate group - and a nitrogenous base
negative pressure breathing
lipases
ATP synthetase
nucleotides
40. Valve between a ventricle of the heart and the vessel that carries blood away from the ventricle; also pertains to the valves in veins
alpha amino acid
semilunar valve
lymph nodes
chymotrypsin
41. Pertaining to substances that don't contain carbon; a substance that is produced from the breakdown of PC and is the leading cause of fatigue in working muscles
inorganic phosphate
subatomic particle
trypsinogen
basement membrane
42. Relatively massive bundles of subunits composed of the protein myosin that can reach 15nm in diameter
thick filaments
smooth muscle
blastocoel
atrial natriuretic hormone
43. Inhibits gastric glands - stimulates pancreas to release enzymes - stimulates GB to release bile
larynx
loose connective tissue
somatotropin
CCK
44. Membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional
yolk sac
scrotum
chymotrypsinogen
endoplasmic reticulum
45. Identical twins formed when one zygote splits into two separate masses of cells - each of which develops into a separate embryo
monozygotic twins
cytotoxic T cells
chemoreceptors
glycolytic pathway
46. A chart showing the relative amounts of oxygen bound to hemoglobin when the pigment is exposed to solutions varying in their partial pressure of dissolved oxygen - pH - or other characteristics.
anaphase
dissociation curve
first messengers
asters
47. Process in which extensions of cytoplasm surround and engulf large particles and take them into the cell.
articular cartilage
phagocytosis
forces creating tertiary structure
gap junction
48. Contains centers that control several visceral functions - including breathing - heart and blood vessel activity - swallowing - vomiting - and digestion.
Nucleic acids
substrate level phosphorylation
circadian rythms
medulla oblongata
49. Second layer of skin - holding blood vessels - nerve endings - sweat glands - and hair follicles
dermis
complementary pairing
anaphase
tonus
50. 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
bone remodeling
NADH
morula
pancreas