题目内容
（请给出正确答案）
Which of the following statements is CORRECT about the stem cell research？
A．Embryonic stem cells are changeable even in the late stage.
B．Growing new hearts in a patient needs stem cells from an adult donator.
C．Research findings by a Japanese scientist might end the controversy.
D．President Obama agrees with George Bush concerning the issue.
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更多“Which of the following stateme…”相关的问题
cause cancer in animals and in certain plants, that exists 【S2】______
a great reluctance to accept viruses as being of importance
in human cancer.
Basic biological phenomena generally do not
differ strikingly as one goes from one species through 【S3】______
another. It should be recognize that caner is a biological 【S4】______
problem and not a problem that is unique for man.
Cancer originates when a normal cell suddenly becomes
a cancer cell which multiplys widely and without 【S5】______
apparent restraint. Cancer may originate in many different
kind of cell, but the cancer cell usually continues 【S6】______
to carry certain traits of the cell of origin. The
transformation of a normal cell into a cancer cell may have
less than one kind of cause, but there is good reason to 【S7】______
consider the relationships that exist between viruses
and cancer.
Since there is no evidence which human cancer, as 【S8】______
generally experience, is infectious, many persons
believe that because viruses are infectious agents they
cannot possibly be of importance in human cancer.
However, viruses can mutate and examples are known
in which a virus that never kills its host can mutate to
form. a new strain of virus that always kills its host. It
does not seem unreasonable assume that an innocuous 【S9】______
latent virus might mutate to form. a strain that causes
cancer. Certainly the experiment evidence now available 【S10】______
is consistent with the idea that viruses as we know
them today, could be the causative agents of most, if not
all cancer, including cancer in man.
【S1】
D．Then the extra lymph enters lymphatic vessels and is called interstitial fluid and is returned to the blooD
B．Lymph leaves blood vessels and because blood plasma surrounding cells． Cells can take in what they need and excrete wastes into this flui
D．Then the extra blood plasma enters lymphatic vessels and is called interstitial fluid and is returned to the blooD
C．Interstitial fluid leaves blood vessels and becomes lymph surrounding cells．Cells can take in what they need and excrete wastes into this flui
D．Then the extra lymph enters lymphatic vessels and is called blood plasma and is returned to the bloo
D．Blood plasma leaves blood vessels and becomes interstitial flui
D．Cells can take in what they need and excrete wastes into this flui
D．Then the extra interstitial fluid enters lymphatic vessels and is called lymph and is returned to the bloo
D．
A、glucose oxidation
B、ketone bodies oxidation
C、lactate oxidation
D、amino acid oxidation
E、fatty acid oxidation
A、T lymphocyte
B、B lymphocyte
C、Stem cell
D、hepatocyte
A、hemoglobin
B、contratile protein
C、collagen
D、karatin
A、tRNA gene
B、rRNA gene
C、mitochondria gene
D、hemoglobin gene
A、Telomere uncapping
B、DNA damage
C、Oxidative stress
D、All of the above
A、inflammatory reaction
B、cellular condensation
C、ladder-like DNA fragmentation
D、Chromatin condensation forming crescent bodies
A、10-20
B、100-150
C、180-200
D、200-300
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