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ValentinkaMS [17]
3 years ago
12

Why would a study involving continuous handrail support, oxygen uptake, and heart rate in women during submaximal step treadmill

exercise be quasi-experimental in design versus experimental? the sample size was small randomization was not used in sample selection the dependent variables were not manipulated the independent variables were not manipulated?
Biology
1 answer:
patriot [66]3 years ago
3 0

The answer is : randomization was not used in sample selection. The major difference between experimental and quasi-experimental designs is lack of randomization in sampling selection.

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Which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts?
Zolol [24]

Mitochondria and chloroplast have similar DNA, which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts.

According to the endosymbiotic theory, a chloroplast and a mitochondria were the independent prokaryotes. Both can be ingested by a large prokaryote and resist digestion. As a result, they continued as endosymbionts and eventually lost some of their autonomic properties. They divide by binary fission, have their own genetic material, possess 70s ribosomes, and Both include their own transcriptional and translational machinery.

Therefore, considering endosymbiotic origin theory, Both Mitochondria and chloroplast have similar DNA is not a piece of evidence.

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2 years ago
Which change would create a new ecosystem?
sergij07 [2.7K]

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Climate change

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The answer would be a panic attack.

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Rapid breathing will cause many CO2 removed than normal, lead to lower level of CO2 in the blood. Carbon dioxide makes the blood more acid, so lower level of CO2 will make the blood become basic, cause respiratory alkalosis which causes the numbness in feet and hands.
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3 years ago
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Gene mapping describes the methods used to identify the locus of a gene and the distances between genes. The essence of all genome mapping is to place a collection of molecular markers onto their respective positions on the genome. i hope this helps.

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