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3 years ago

- Enzymes serve several functions during DNA replication. Namne two of these functions.

Biology

1 answer:

Advocard [28]3 years ago

7 0

Answer:

Topoisomerase and Primase

Explanation:

Topoisomerase — Relaxes the super-coiled DNA

Primase — Provides the starting point for DNA polymerase to begin synthesis of the new strand

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Name the three carbon compound converted during respiration? How is it converted to products in absence, presence, and lack of o

ValentinkaMS [17]

The answer is pyruvate. In the absence of oxygen in anaerobic respiration, the pyruvate is converted to lactic acid in animals and ethanol in plants. However, in the presence of oxygen, the pyruvate enters the Krebs cycle after being converted to Acetyl CoA. Pyruvate is an intermediate product of glycolysis.

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3 years ago

Why are certain toads in the amphibian family call spadefoot toad?

expeople1 [14]

Because their foots is shaped like a spade

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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>

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2 years ago

The waste product of nuclear energy which is a possible pollutant is:

Tamiku [17]

Answer:

Explanation:

Liquid cooling is applied around the uranium rods to cool them. When this water is heated thanks to uranium, it produces water vapor.

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2 years ago

Read 2 more answers

What percentage of all water is fresh on earth?

schepotkina [342]