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3 years ago

Which of the statements are characteristics of a good hypothesis?

Biology

1 answer:

Neko [114]3 years ago

7 0

Answer:

A good hypothesis needs to have clear concepts which must be testable by experimental or observational procedures

Explanation:

A scientific hypothesis is a possible explanation for a given phenomenon observed in the natural world. In the scientific method, a hypothesis is first raised, subsequently tested, and finally confirmed (or rejected) by empirical evidence. A scientific hypothesis needs to fulfill a series of characteristics: to be capable of being tested, to be understandable, to be precise, to be plausible, to define associations among experimental variables, etc.

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explain why acid rain, smog, ocean acidification, and global warming are indirect results of air pollution.

Paraphin [41]

Well if we have no oxygen we cant breathe

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3 years ago

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Protein malnutrition can result in a moderate anemia. which of the below-listed vitamins would be most likely to be associated w

damaskus [11]

Anemia is a medical condition in which there is a decrease int the total amount of red blood cells in the blood and it always results in lowered ability of the blood to carry oxygen. Vitamin B12 is needed to make red blood cells and lack of Vitamin B12 can lead to aneamia. So, the vitamin that is most associated with aneamia condition is VITAMIN B12.

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3 years ago

Suppose the human trait for hair type is controlled by a simple dominant and recessive relationship at one locus. Curly hair, C,

myrzilka [38]

Answer:

A) The frequency of the dominant allele, C $= 0.4376$

B) frequency of the heterozygous genotype, Cc $= 0.2461$

Explanation:

Given -

Curly hair, C, is the dominant allele, and straight hair, c, is the recessive allele

Number of students with curly hair is $37$

Thus frequency of genotype "CC"

$= q^{2} = \frac{37}{117} \\= 0.3162$

Thus, frequency of allele "q"

$= \sqrt{0.3162} \\= 0.5623$

As per Hardy Weinberg's first equation-

$p+q=1$

Substituting the value of q, we get -

$p+0.5623=1\\p= 0.4376$

As per Hardy Weinberg's second equation -

$p^2+q^2+2pq=1\\$

Substituting the values of "p" and "q" we get -

$0.4376^{2} + 0.3162+2pq = 1\\2pq = 0.2461\\$

Hence,

A) The frequency of the dominant allele, C $= 0.4376$

B) frequency of the heterozygous genotype, Cc $= 0.2461$

8 0

3 years ago

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A graph with a calibration curve, linear regression and extrapolation was drawn up from your lab results. What were the two type

fiasKO [112]

Answer:

X is the concentration of the substance being measured and Y is the response from the instrument that is being used to measure

Explanation:

A calibration curve is the plot of known concentration of substances where x is the increasing known concentration and Y is the response, typically "absorption" taken from the instrument that is used for measuring. This curve is then used to find out the concentration of the unknown substance by using it's absorbance and comparing it with the calibration curve. For example:

Concentrations and absorbance readings are as follows

0.5mg/mL=10 nm

1.0mg/mL=15nm

1.5mg/mL=20nm

2.0mg/mL=25nm

This data is plotted on a calibration curve. Next we measure the unknown substance the absorption is 20nm. We can suggest that the concentration is 1.5 mg/mL. If there are readings that fall inbetwen values then the formulat to calculate the right concentration would be y = mx + b, where m is the slope and b is the y-intercept.

Linear regression uses the modification of the slope formula y= a + bx to best see how the data of the water samples would fit on the slope of the calibration curve. X is the independent variable , b is the slope of the line and a is the y-intercept.

Extrapolation would be the action of calculating data that are outside the calibration curve, assuming the trend would continue.

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3 years ago

Where does nitrogen go next

tresset_1 [31]

But my guess its a oxygen? Or carbon dioxide?

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3 years ago

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