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3 years ago

Which one of the following is NOT one of the functions of the kidneys?

Biology

1 answer:

Pavlova-9 [17]3 years ago

4 0

Answer:

Explanation:

kidney has never produces hormones that helps in digestion,but it help in the removal of excessive water and urea in the body of a living animal or a human

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Which amino acid residues are phosphorylated by kinases?

Jlenok [28]

Serine, threonine, and tyrosine are most commonly phosphorylated in eukaryotes.

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3 years ago

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

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

4 0

3 years ago

(Will mark brainliest!!!!)

VladimirAG [237]

Eukaryotic cells have a membrane-bound nucleus, whereas prokaryotic cells do not. In eukaryotes, the nucleus is just one of numerous membrane-bound organelles. Prokaryotes, on the other hand, lack organelles that are attached to the membrane.

6 0

3 years ago

Read 2 more answers

Why do many evolutionary biologists believe that mycorrhizal fungus made it possible for aquatic plants to make the evolutionary

mrs_skeptik [129]

Answer: The vulnerable embryo must be sheltered from desiccation and other environmental hazards. In both seedless and seed plants, the female gametophyte provides protection and nutrients to the embryo as it develops into the new generation of sporophyte.

Explanation:

i think this may help

8 0

2 years ago

Research has found that the body's immune system can attack your own body parts, leading to all but which of the following condi

shepuryov [24]

If your immune system attacks your own body parts, then it's called 'autoimmune disease'.

Autoimmune disease can happen at many times due to many problems the body can have. If one thing goes wrong with your body, it can go to another.

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3 years ago