問題一覧
1
which statement about energy is true
（B）kinetic energy is related to motion
2
a chemical reaction with a positive g is
（A）endergonic
3
a noncompetitive inhibitor inhibit the binding of substrate to an enzyme by
（D）change the shape of the active site
4
which of the following is an example of cooperativity
（C）a molecular binding at one unit of a tetramer, allowing faster binding at each of the other three
5
in a chemical reaction
（B）transition state have higher free energy than either the reactants or the products
6
the final products of glycolysis are (1)ATP (2)CO2 (3)pyruvate (4)NAD+ (5)NADH
135
7
the citric acid cycle
（C）produces both NADH and FADH2
8
substrate-level phosphorylation
use ATP synthase to produce ATP
9
the molecule formula for glucose is C6H12O6. what would be the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions
C18H32O16
10
what is the major structure difference between starch and glycogen
（D）the amount of branching that occurs in the molecules
11
phospholipids and triglycerides both
（C）have a glycerol backbone
12
steroids are considered to be lipids because they
are not soluble in water
13
what is the term used for a protein molecule that assists in the proper folding of other poteins
chaperonin
14
all of the following are part of a prokaryote cell except
an endomembrane reticulum
15
the liver is involved in detoxification of many poisons and drugs. which of the following structure is primarily involved in this process and, therefore, abundant in living ER
smooth ER
16
what is the most likely pathway taken by synthesized protein that will be secreted by a cell
ER→golgi→vesicle that fuse with plasma membrane
17
cells require which of the following to form cilia or flagella
tubulin
18
plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells
gap junctions
19
the toxin of vibrio cholerae causes profuse diarrhea because it
modifies a G protein involved in regulating salt and water secretion
20
which of the following is a correct association
GTPase activity and hydrolysis of GTP to GDP
21
scaffolding proteins are
large proteins to which several array proteins attach to facilitate cascade effect
22
the membrane of winter wheat are able to remain fluid when it is extremely cold is by
increasing the percentage of unsaturated phospholipids in the membrane
23
singer and nicholson fluid mosaic model of membrane proposed that membrane
consist of proteins embedded in fluid phospholipid bilayer
24
which of the following process include all others
passive transportation
25
which of the following membrane activities requires energy from ATP
movement of Na+ ions from a lower concentration in a mammalian cell to a higher concentration in the extracellular fluid
26
lipid-soluble signaling molecules, such as testosterone, cross the membranes of all cells but affect only target cells because
（B）intracellular receptors are present only in target cells
27
which of the following would be inhibited by a drug that specifically blocks the addition of phosphate group to proteins
receptor tynosine activity
28
which of the following is the best explanation for the inability of a specific animal cell to reduce the Ca2+ concentration in its cytosol compared with eyton cellular fluid
insufficient ATP levels in cytosol
29
G1 is associated with which of the following cellular events
normal growth and cell function
30
what is the name of the microtubule-organizing center found in animal cells as an identifiable structure present during all phases of the cell cycle
centrosome
31
the mitotic spindle plays a critical role in which of the following processes
separation of sister chromatids
32
metaphase is characterized by
alignment of chromosomes on the equator of cells
33
a cleavage furrow is associated with which of the following cellular events
a groove in the plasma membrane between daughter nuclei
34
what is the character of cyclin-dependent kinase (cdk)
（D）cdk attaches phosphates to proteins
35
which of the following statements defines a genome
the complete set of an organism's genes and other DNA sequences
36
which of the following statements describes the chromosomal makeup of each daughter cell after telophase of meiosis I
the cells are haploid, and the chromosomes are each composed of two chromatids