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2 years ago

which is not a basic function of a cell? A) storing energy B) releasing energy C) destroying energy D) obtaining energy

1 answer:

4 0

The one that is not a basic function of a cell is C. destroying energy. this is against the first law of thermodynamics which states that energy cannot be destroyed nor created, only transformed or transferred.

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22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit

mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square ( $X^2$ ):

$X^2$ = $\frac{(O - E)^2}{E}$ where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The $X^2$ is calculated thus:

Phenotype O E $X^2$

1 88 164.81 $\frac{(88 - 164.81)^2}{164.81}$ = 35.80

2 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

3 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

4 81 18.31 $\frac{(81 - 18.31)^2}{18.31}$ = 214.64

Total $X^2$ = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

$X^2$ tabulated = 7.815

The calculated  $X^2$  exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently. 

4 0

2 years ago

When electrons are lost, a When electrons are gained, a ion is formed, lon is formed

miskamm [114]

Answer: when one is lost, one is formed

6 0

2 years ago

What is natural selection?

Tatiana [17]

Natural selection is species survival and reproduction due to differences in some traits that give them an advantage over others

6 0

2 years ago

Based upon the presence and larger size of the eyes of the cephalopods, you could guess they have a more complex _______ system.

Sveta_85 [38]

Answer:

Anatomy

Explanation:

Based upon the presence and larger size of the eyes of the cephalopods, you could guess they have a more complex ANATOMY system.

5 0

2 years ago

How would adding finer particles to the sand affect porosity?

OLEGan [10]

Explanation:

Porosity depends on the size, shape, and mixture of grains and particles that compose soil and rock. For instance, small particles such as clays can compact more closely together, reducing the amount of porosity. However, larger particles such as sand and gravel will have more spaces available between them.

5 0

2 years ago