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disa [49]
3 years ago
14

Name 5 major events occured during the precambrian era?

Biology
1 answer:
Gelneren [198K]3 years ago
7 0
1) <span>the solar system and light formed.
2) </span> Earth<span>'s formation, approximately 4,5 billion years ago.
3) </span>the creation of the atmosphere through volcanic out gassing; <span>Earth's primitive atmosphere made a transition to an </span>oxygen<span> rich atmosphere.
4) </span>formation of landmass and oceans.
5) the creation of life; <span> there is evidence of the earliest appearance of eukaryotes.</span>
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Which of these allows the trial judge to be the “gatekeeper” or final decision-maker on admissibility of evidence or acceptance
Nuetrik [128]

The answer is Daubert Standard or Ruling. This ruling makes available a rule of evidence concerning the admissibility of expert witnesses' testimony throughout United States federal legal measures. Pursuant to this ruling, a party may raise a <span>Daubert motion</span>, which is a extraordinary case of <span>motion in limine</span> upturned earlier or for the duration of the trial to eliminate the demonstration of unreserved indication to the jury. 

4 0
3 years ago
Salmon eggs hatch in fresh water. The fish then migrate to the ocean (a hypertonic solution) and, after several years of feeding
Ray Of Light [21]

Answer:

Letter C

Explanation:

Salmon have a physiological adaptation that allows osmoregulation to occur in two different environments (seawater and freshwater). There are specific molecules in the salmon gills that "pump" and "remove" Na and Cl ions. When at sea these molecules pump the ions out of the salmon's body and into freshwater, the same molecules remove Na and Cl from the water bringing it into the animal's blood.

3 0
3 years ago
How enzymes inhibitions studies in the formulation and development of drugs​
lesya [120]

Answer:

Enzyme inhibitors may alter the elimination rate of a particular drug or inhibit detoxication pathways

Explanation:

An enzyme inhibitor is a chemical compound capable of binding to an enzyme in order to reduce its activity. An enzyme inhibitor may bind to an active site and thus decreases the rate of reaction (direct inhibition). Enzyme inhibitors may act 1-to Inhibit detoxification enzymes and 2-reduce the elimination rate of enzyme drugs, thereby having dose-dependent toxicity effects. For example, many medicines are based on the inhibition of Cytochromes P450 (CYPs) proteins, which are a superfamily of enzymes required for drug metabolism.

7 0
2 years ago
Photosynthetic cyanobacteria created what important component of the atmosphere?
horrorfan [7]
C because oxygen was a byproduct of photosynthesis and proved to be EXTREMELY important in the atmosphere.
7 0
3 years ago
You are interested in studying a gene called CFTR because mutations in this gene in humans cause cystic fibrosis. You have made
Juliette [100K]

Answer: Both the mouse and human beings are encoding the proteins having similar functions.

Explanation:

The CFTR gene in the mouse and CFTR gene in the human beings encode proteins that perform similar function,this is so because if the results are same then it means that both mouse and human beings are encoding the protein that have similar function.

Option A is incorrect  because both humans and mouse are eukaryotes so they have introns and because of that even if the gene sequences are different they can still encode protein.

Option B is incorrect because  amino acid sequences can be similar inorder to have the similar function. If glutamic acid is replaced by aspartic acid, it won't have different function the function will remain same. So, identical amino acid sequences are not required. They can be similar too.

8 0
3 years ago
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