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Marrrta [24]
3 years ago
8

True or false A hypotheses has been tested many times by different independent researchers but a theory has not

Biology
2 answers:
sweet-ann [11.9K]3 years ago
7 0

Answer:

Testing a hypothesis can lead to one of two things: the hypothesis is confirmed or the hypothesis is rejected, meaning it either has to be changed or a new hypothesis has to be created.  This must happen if the experiments repeatedly and clearly show that their hypothesis is wrong.  It doesn’t matter how elegant or supported a theory is—if it can be disproven once, it can’t be considered a law of nature.  Experimentation is the supreme rule in the scientific method, and if an experiment shows that the hypothesis isn’t true, it trumps all previous experiments that supported it.  These experiments sometimes directly test the theory, while other times they test the theory indirectly via logic and math.  The scientific method requires that all theories have to be testable in some way—those that can’t are not considered scientific theories.

Explanation:

so in short True , can u mark me brainlyest

hoa [83]3 years ago
3 0

Answer:

true

Explanation:

yea a theory has not tested hypothesis

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The hydrogen bonds between water molecules

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c. Ductus venosus, vena cava, heart, ductus arteriosus, arteries

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The circulatory system consists of the heart and blood vessels. In a fetus, the circulation of blood is different from circulation after delivery largely due to the fact that the lungs are not in use, rather, the fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord.

Blood from the placenta is carried to the fetus by the umbilical vein. While some of this blood enters the fetal ductus venosus and is carried to the inferior vena cava, some others enter the liver. The blood from the inferior vena cava then moves into the right atrium of the heart. The foramen ovale, an opening between the right and left atrium in the fetus directs most of the blood flow from the right into the left atrium, thereby, bypassing pulmonary circulation. Most of the blood from the right atrium flows into the left ventricle and is pumped through the aorta to the rest of the body.  

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Which is not considered to be an enhancer to transcription in the metallothionein 2a gene?
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<h3>About metallothionein 2A.</h3>

Metallothionein-2 is a metallothionein protein that in humans is encoded by the MT2A gene.

In human it is expressed in;

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  • right lobe of liver
  • olfactory bulb
  • left uterine tube
  • external globus pallidus
  • right lobe of thyroid gland
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  • Region I of hippocampus proper
  • right lung
  • left lobe of thyroid gland

It's molecular function are;

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  • Zinc ion binding
  • Metal ion binding

It helps in various biological processes;

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  • cellular response to interleukin-3
  • cellular response to erythropoietin
  • negative regulation of growth
  • cellular response to zinc ion
  • interferon-gamma-mediated signaling pathway
  • cellular copper ion homeostasis
  • cellular zinc ion homeostasis
  • detoxification of copper ion
  • cellular response to cadmium ion
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  • nitric oxide mediated signal transduction
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To learn more about Metallothionein 2a,

brainly.com/question/13962194

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