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gladu [14]
2 years ago
7

DNA is the main hereditary material of all life. However, DNA lacks one important characteristic for the first forms of life. Wh

y have researchers rejected the idea that DNA was found in the first life-form?
Biology
1 answer:
kow [346]2 years ago
3 0

Answer:

The inability to function as catalyst.

Explanation:

DNA is the genetic material present in all organism except some viruses. DNA shows all the properties to work as the genetic material according to the today's environment.

Researchers believe that DNA was not the first genetic material in the early environment. The genetic material should have the catalytic activity in the early forms of life and DNA cannot work as the catalyst. The catalytic property of the genetic material is important in the early , rapid and changing environment. Hence, DNA was not the genetic material in early forms of life.

Thus, the answer is inability of DNA to function as catalyst.

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Disease or sickness
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2 years ago
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Place the particular characteristic into the correct corresponding type of dna replication. each characteristic may be used once
torisob [31]

Answer:

This is the remaining incomplete part of the question.

Requires separation of template strand Uses helicase Occurs during interphase of cell cycle Require primers Occurs in nucleus Requires dNTPs Produces Okazaki fragments Requires DNA polymerase Requires Primase Requires Taq DNA polymerase Requires cycles of heating Occurs in cytoplasm Occurs during anaphase of mitosis

Explanation:

Cellular DNA replication                            Polymerase chain reaction

Requires separation of template            Requires separation of template

strand                                                       strand

Requires dNTPs                                       Requires dNTPs

Uses helicase                                           Requires cycles of heating

Requires Primase                                     Require primers

Requires DNA polymerase                      Requires Taq DNA polymerase

Occurs during interphase of cell cycle  

Occurs in nucleus                                    Occurs in test tube

Produces Okazaki fragments

6 0
1 year ago
A student measures the length of a glass rod five times and records the data as: a. 23.487 cm b. 23.493 cm c. 23.516 cm d. 23.50
MAVERICK [17]
Percent error is calculated by the expression:

%error = |actual value - observed value| / actual value x 100

We calculate the error of the values as follows:

<span>a. 23.487 cm
% error = |</span><span>23.490  - 23.487| / 23.490 x 100 = 0.013%
</span><span>
b. 23.493 cm
</span>% error = |23.490  - 23.493| / 23.490 x 100 = 0.013%
<span>
c. 23.516 cm
</span>% error = |23.490  - 23.516| / 23.490 x 100 = 0.11%<span>

d. 23.501 cm
</span>% error = |23.490  - 23.501| / 23.490 x 100 = 0.05%<span>

e. 23.477 cm
</span>% error = |23.490  - 23.477| / 23.490 x 100 = 0.055%
6 0
1 year ago
Electron carrier molecules transfer electrons between metabolic pathways. Choose the electron carriers that transfer electrons f
denis23 [38]

Answer:

from glycolysis to electron transport.-glycolytic pathway

NADH  and FADH2 are the major electron carrier   from glycolysis through the Kreb Cycle to the electron transport chain.

Note-NADH  alone transports electron  from glycolysis  to the Kreb Cycle. while both   NADH and FADH2  transport electrons   from the kreb'cycle  to the electron transport chain.

from citric ac id cycle to the electron transport chain.

as explained above both NADH and FADH2.

The electrons are  in the hydrogen atoms, carried by these co-enzymes. When they reached the matrix, the hydrogen atoms are split into protons and electrons(p and e-). it is these electrons that form gradients which are transported as chains in the matrix. The gradients of the electron generated PMF for pumping Hydrogen atoms into the intramembrane of mitochondrial

Note.

Nicotinamide Adenine Di nucleotide Hydrogen(NADH)

Flavin Adenine Dinucleotide Hydrogen(FADH)

Explanation:

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Delicious77 [7]

Student 1’s methods would be more accurate, because the student would control more factors. Only one variable at a time (either temperature or acidity) would be tested on each group of worms. On the other hand, Student 2 is testing both factors on all the worms, which could make the results unclear.


4 0
1 year ago
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