【单选题】
[1/19]The non-covalent intermolecular forces described in this video behave differently. How are the forc...
A.
Van Der Waals > Ionic > Hydrogen bonds
B.
Hydrogen bonds > Ionic > Van Der Waals
C.
Ionic > Hydrogen bonds > Van Der Waals
D.
Ionic > Van Der Waals > Hydrogen bonds
参考答案:
C
参考解析:
无
【单选题】
[2/19]Why does proline often “break” an alpha helix?
A.
It often adopts the trans conformation, unlike the other amino acids.
B.
It has no free hydrogen to bond with a carbonyl because of the imino ring.
C.
It flips between the cis and trans conformations frequently.
D.
It cannot adopt the psi and phi angles required to form an alpha helix.
参考答案:
B
参考解析:
无
【单选题】
[3/19]The following reaction: S⟶P has a ΔG of -10 kJ/mol. The reaction is:
参考答案:
C
参考解析:
无
【单选题】
[4/19]6-磷酸果糖 → 1,6-二磷酸果糖,需要哪些条件?
参考答案:
A
参考解析:
无
【单选题】
[5/19]In a Ramachandran plot, what do all of the shaded areas represent?
A.
The most common combinations of bond angles in proteins
B.
Angles that cause the formation of alpha helices
C.
Areas of steric clash between the R groups of adjacent amino acids
D.
Angles that cause the formation of beta sheets
参考答案:
A
参考解析:
无
【单选题】
[6/19]The following reaction: S⟶P has a ΔH of -10 kJ/mol, and the product of TΔS...
参考答案:
D
参考解析:
无
【单选题】
[7/19]下列有关葡萄糖磷酸化的叙述中,错误的是:
参考答案:
B
参考解析:
无
【单选题】
[8/19]化学渗透学说认为,电子在电子传递过程中引起线粒体内膜 :
参考答案:
C
参考解析:
无
【单选题】
[9/19]△G>0表示某反应不能自动进行。如在酶的催化下,与之相偶联的放能反应则可驱动这类反应的进行。
参考答案:
A
参考解析:
无
【单选题】
[10/19]Why does proline often “break” an alpha helix?
A.
It often adopts the trans conformation, unlike the other amino acids.
B.
It cannot adopt the psi and phi angles required to form an alpha helix.
C.
It flips between the cis and trans conformations frequently.
D.
It has no free hydrogen to bond with a carbonyl because of the imino ring.
参考答案:
D
参考解析:
无