下载APP
【多选题】
The reasons that decrease conduction of myocardium are（ ）
A.
0 depolarization velocity slows down
B.
The excitability of adjacent myocardium is lower
C.
The absolute value of resting potential decreases
D.
Increased myocardial automaticity
E.
0 depolarization amplitude decreased
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】What is correct in the following statements about the regulation of respiration by CO2（ ）
A.
CO2 excites breathe by stimulating central and peripheral chemoreceptors
B.
CO2 anesthesia occurs when the amount of inhaled CO2 is too high
C.
It is the most important physiological factor in regulating respiration
D.
Stimulating peripheral chemoreceptors is more effective than central chemoreceptors
E.
Within a certain range, the amount of inhaled CO2 is positively correlated with pulmonary ventilation
【多选题】The physiologic stimulus/stimuli for ADH secretion is/are:（ ）
A.
Decrease in blood pressure
B.
Decrease in blood volume
C.
Increase in plasma crystal osmotic pressure
D.
Decrease in blood oxygen saturation
E.
Increase in plasma colloid osmotic pressure
【单选题】All the RNAs below are transcribed by RNA pol I except （ ）
A.
28S rRNA
B.
18S rRNA
C.
5.8S rRNA
D.
23S rRNA
【多选题】Which is correct in the following descriptions of secondary active transport（ ）
A.
Transport against the concentration gradient
B.
Direct energy is the transmembrane concentration gradient of Na+
C.
The rate of transport is independent of ATP in the cell
D.
It is also called combined transport
E.
Including positive transfer and reverse transfer
【多选题】Among the following reflexes, postural reflexes includs（ ）
A.
Righting reflex
B.
Stretch reflex
C.
Cervical tension reflex
D.
Flexor reflex
E.
Contralateral extensor reflex
【单选题】What is wrong about the description of the physiological effects of insulin（ ）
A.
Promote the storage and utilization of sugar and reduce blood sugar
B.
Promote fat synthesis and inhibit fat decomposition
C.
Promote protein synthesis
D.
When used together with growth hormone, it has obvious synergistic effect on promoting growth Multiple choice questions
E.
Promote gluconeogenesis
【单选题】Which isFALSE about the termination of prokaryotic DNA replication?（ ）
A.
DNA polymerase I fills gaps and leaves nicks
B.
DNA polymerase I removes all RNA primers and leaves gaps
C.
DNA ligase seals all DNA nicks
D.
Coordinate the synthesis of lagging and leading strands
【单选题】Which bond is an amino acid linked to the tRNA?（ ）
A.
glycosidic
B.
phosphodiester
C.
ester
D.
high energy
【多选题】The characterizes of isovolemic systole are（ ）
A.
The decrease rate of intracardiac pressure is the fastest
B.
Intracardiac pressure is higher than arterial pressure
C.
Ventricular volume does not change
D.
The intracardiac pressure reached the maximum value
E.
Atrioventricular and semilunar valves are closed