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【多选题】
What are the differences of eukaryotic DNA replication from prokaryotes? （ ）
A.
the replication origin of eukaryotes is shorter than that in prokaryotes
B.
telomere and telomerase aid termination of eukaryotes
C.
eukaryotic DNA contains multiple origins
D.
eukaryotic DNA is replicated in S phase of cell cycle
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举一反三
【单选题】Which protein factor has the translocase enzyme activity in eukaryotes:（ ）
A.
eEF-2 protein factor
B.
eRF protein factor
C.
eIF-4B protein factor
D.
eIF-2 protein factor
【单选题】The basic components of the PCR system does not include:（ ）
A.
dNTP
B.
thermal stable DNA polymerase
C.
template DNA
D.
NTP
【单选题】Which one is NOT a cis-acting element?（ ）
A.
silencer
B.
enhancer
C.
activator protein
D.
promoter
【多选题】The significance of H+ secretion in renal tubules is（ ）
A.
It is beneficial to maintain acid-base balance
B.
It is beneficial for K+ reabsorption
C.
Facilitate the secretion of NH3
D.
It is beneficial to HCO3- reabsorption
E.
It is beneficial for Na+ reabsorption
【多选题】Which of the statement about decompression reflex is correct（ ）
A.
Reflexes only result in lower blood pressure
B.
The efferent nerves are the sympathetic and vagus nerves
C.
The afferent nerves are the aortic and sinus nerves
D.
The center is located in the medulla oblongata
E.
The receptors are located in the carotid sinus and the aortic arch
【单选题】What is the order of lipoprotein from the cathode to anode?（ ）
A.
CM, pre-β lipoprotein, β lipoprotein, α lipoprotein
B.
CM, β lipoprotein, α lipoprotein, pre-β lipoprotein
C.
CM, β lipoprotein, pre-β lipoprotein, α lipoprotein
D.
CM, pre-β lipoprotein, α lipoprotein, β lipoprotein
【多选题】The functions of 5’ Cap of eukaryotic mRNA include（ ）
A.
acceleration of the adding of poly A tail.
B.
enhancement of the mRNA’s translatability;
C.
transport of the mRNA from nucleus to cytosol;
D.
protection of the mRNA from degradation;
【单选题】Which is not necessary as part of prokaryotic expression vector?（ ）
A.
Selectable markers
B.
Poly A signal
C.
Promoter
D.
Ribosome binding site
【单选题】The following changes promote oncogene activation, except （ ）
A.
Translocation
B.
Amplification
C.
Mutation
D.
Loss of heterozygosity