B. VERY SHORT ANSWER TYPE
1. Name the following:
(a) The repeating components of each DNA strand
lengthwise.
(b) The complex structure consisting of DNA strand
and a core of histones.
(c) The type of bond which joins the complementary
nitrogenous bases
(d) The three components of a nucleotide.
2. Imagine one cell (A) has undergone one mitotic
division and another cell (B) has completed its
meiotic division. How many cells would the two
produce?
Cell A:
Cell B :
answer my questions fast
Answers
1.a. Nucleotides
DNA is made up of repeating unit called nucleotide. Each nucleotide is made up of three components, a phosphate, a sugar (pentose) arranged lengthwise and a nitrogenous base attached to the sugar inwards.
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b.Nucleosome
Nucleosome is a complex structure in which DNA wraps around a protein core of eight histone molecules.
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c.Base pairs between anti-parallelcomplementary DNA strands arejoined by hydrogen bonds to form a double helix structure. Adenine and thymine are joined by 2 hydrogenbonds, and cytosine and guanine arejoined by 3 hydrogen bonds. The hydrophobic nitrogenous bases are located internally within the double helix..
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d.Components of Nucleotide. The nucleotide includes three main components like nitrogenous base, a pentose sugar and a phosphate moiety
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2.It would produce 6 total. Mitosis produces 2 new cells. Meiosis produces 4 new cells.
2A
4B
6 total
Though this question is poorly written from my perspective (I got a little confused with the tenses and what stage of meiosis…) , I believe this is the right answer.
How I, personally, would write this question (kind of/sort of):
After a singular mitotic division what is the resultant cell count? Similarly, a singular dual-phase meiotic division results in what new cell number?
Don’t get me wrong… I think the use of the word “imagine” is awesome.
Imagine a mitotic division of one cell, and a full meiotic division of another cell. How many cells together would these divisions produce?
Or
Imagine a cell undergoing a mitotic division: how many new cells are born? Similarly, once a cell undergoes a full meiotic division, how many new cells are present? Together how many new daughter cells are produced?
Answer:
1 Nucleotides
2 Nucleosome
3 double and triple hydrogen bond