<h3><u>Answer;</u></h3>
A. <em>18 hydrogen atoms </em>
<h3><u>Explanation;</u></h3>
- <em><u>Alkanes are group of hydrocarbon that are saturated</u></em>. They are saturated in the sense that each carbon atom has maximum number of hydrogen atoms.
- <em><u>The homologous series of alkanes has a general formula of CₓH₂ₓ₊₂.</u></em>
- Therefore,<u><em> an alkane with 8 carbons will have; (2×8) +2 = 18 hydrogen atoms. </em></u>Thus, the formula of the hyrocarbon will be; C₈H₁₈.
Answer:
The answer is True.
Earth stores carbon naturally as part of the carbon cycle. When the system is not in equilibrium, it corrects itself. The Earth has been emitting and storing carbon for millions of years, cycling it between sky, sea, soil, and rock. And the law of conservation of matter states that no matter is destroyed, nor created, likewise with energy.
1. two copies of the duplicated chromosome are attached at their centromeres before separating
2. chromosomes replicate before cell division
3. chromosome separation begins at the origin of replication on DNA
4. Before separation duplicated chromosomes condense; nuclear envelope fragments permitting chromosome separation
5. replicated chromosomes separate by attaching to some other structural feature of the cell
Explanation:
In the given question, the DNA replication steps of both prokaryotes and eukaryotes are provided in which some are common to both eukaryotes and prokaryotes and some are unique to the prokaryotes and eukaryotes.
<u>Eukaryotes
</u>
1. Option-4 as the nuclear envelope is present in eukaryotes only.
2. Option-1 as centromere allows the kinetochores bind to the centromere which separates the chromosome.
<u>Bacteria
</u>
1. Option-3 as DNA replication process separates the strand of the DNA.
<u>Both
</u>
1. Option-5 as the chromosomes separate by other structures like microtubules
2. Option-2 as genetic material to be passed on to the generation must be replicated.
<span>A. 5/8
B. 2/3
C. 10/12
D. 3/4
We need to simplify the fraction. Whatever number we use to divide the numerator, should also be the number used to divide the denominator.
18 </span>÷ 2 = 9
24 ÷ 2 = 12
9 ÷ 3 = 3
12 ÷ 3 = 4
18 / 24 is equal to 9/12
18 / 24 is equal to 3/4 CHOICE D.
3/4 IS THE SIMPLEST FORM OF THE FRACTION 18/24