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WorksheetsPPG WEEK 13: TRANSPORT SYSTEM
Total questions: 20
Worksheet time: 21mins
- Systole is
the relaxation of cardiac muscle
the contraction of cardiac muscle
the relaxation of coronary artery
the contraction of coronary artery
during heart ventricular contraction..
bicuspid valve will be opened
the ventricle volume will increase
the pressure in aorta will decrease
the pressure in ventricle will increase
which of the following stages of the cardiac cycle would be affected first if the nerve fibers within bundle of His were cut?
diastole
artrial systole
ventricular systole
stimulation of the atrioventricular node
which pair of statements about the cardiac cycle is TRUE
deoxygenated blood enters the heart, because the artrial muscle relax
deoxygenated blood leaves the heart, because the artrial muscle relax
oxygenated blood enters the heart, because the ventricular muscle relax
oxygenated blood enters the heart, because the ventricular muscle contracted
which of the following events in a normal cardiac cycle takes the shortest time?
auricle systole
auricle diastole
ventricle systole
ventricle diastole
sound 'lup' produced in the cardiac cycle occurs when
both semilunar valves open simultaneously
both semilunar valves close simultaneously
both atrioventricular valves open simultaneously
both atrioventricular valves close simultaneously
which of the following events in normal cardiac cycle takes the longest time?
atrium systole
atrium diastole
ventricle systole
ventricle diastole
sound 'dup' produced in the cardiac cycle occurs when..
both semilunar valves open simultaneously
both semilunar valves close simultaneously
both atrioventricular valves open simultaneously
both atrioventricular valves close simultaneously
cardiac muscles are myogenic because
it requires impulse from parasympathetic nerve to increase the heartbeat rate
it requires impulse from the sympathetic nerve to decrease the heartbeat rate
it does not require impulse from the central nervous system to start contraction
its muscles are branched and connected by the intercalated disc
normal blood pressure in a healthy human at rest is
80/120
120/80
154/94
94/154
water movement through cellulose cell wall without entering protoplast of root cells is called
symplast pathway
vacuolar pathway
apoplast pathway
cellulose pathway
which of the following statement is FALSE
water moves through Casparian strip
Root hairs are composed of single epidermal cells
nodules containing bacteria enable plants to increase their absorption of nitrogen
water travels along the cells of the cortex but must move through the cytoplasm of endodermal cells.
which theory of water transport states that hydrogen bonding allows water to maintain a continuous fluid column as water is pulled from roots to leaves
Fusion
Evaporation
Pressure flow
Cohesion-tension
The pressure flow model for phloem translocation states..
that sink strength drives transport in the pholem
that transport in treachery elements is pressure dependent
the water potential gradient in the sieve elements drives transport
the pressure gradient between the sieve elements at the source and the sink drives phloem transport
Root pressure is caused by
active loading of water molecules into xylem vessels by endordermis cells
active loading of salts into xylem vessels by endodermis cells
xylem vessels using energy to actively load water upwards
movement of water molecules upwards in xylem vessels through osmosis
Casparian strip on endodermis cell are made of
Lignin
Pectin
Suberin
Cellulose
Movement of water across the endodermis cell can occur through the
I: apoplast pathway
II: vacuolar pathway
III: symplast pathway
III only
II and III
I and II
I, II and III
which of the following statements about the lymph vascular systen is NOT true? the lymph vascular system...
recovers and transport interstitial fluid back to the bloodstream
absorbs glucose from the small intestine and transports it to the brain
transport lipids absorbed from the small intestine to the bloodstream
serves the body's system of the defenses against bacteria and other infectious agents
Translocation may occur as the mass flow hypothesis. The pressure involved in this hypothesis originates from
The root pressure
Transpiration in the leaves
Accumulation of minerals and water in leaves
The intake of water by sieve tubes in the leaves
The basic theory of cohesion-tension is
The formation of the weak bonds between water molecules, and water molecules and vessel walls
The sinking of parenchyma cell's cell wall
The entrance of water and ions actively through the cell membrane of the root epidermis
The movement of water into root tissue through stem xylem and leaf xylem, then to the atmosphere
