Answer:
Only one of the original DNA strands acts as a template during replication.
Explanation:
The DNA of every living cell replicates prior to division. It occurs in the S-phase of interphase stage. The DNA is a long double-helical structure. Before the actual duplication occurs, the double strand of the DNA needs to be unwound. This unwinding is done by HELICASE by breaking the weak hydrogen bonds that binds each base pair.
After the unwinding, two separate strands result with only one of the strands serving as a template for the new strand synthesized by DNA polymerase. DNA polymerase enzyme synthesizes new DNA strand by adding nucleotide bases that are complementary to each template strand.
i.e. DNA polymerase will add nucleotide G to the growing strand if it reads nucleotide C on the template strand.
Meiosis results in the formation of gametes.
B.
Meiosis produces recombinant chromosomes.
C.
Meiosis begins with a diploid cell, but produces four haploid cells.
Answer:
C. Meiosis begins with a diploid cell, but produces four haploid cells.
Explanation:
C. Meiosis begins with a diploid cell but produces four haploid cells.
The statement "Meiosis begins with a diploid cell, but produces four haploid cells" explains why meiosis is a reduction division. The cell divides twice during meiosis, resulting in the creation of four daughter cells. These daughter cells are genetically distinct from the parent cell and contain half the number of chromosomes (haploid) as the parent cell.
Answer:
Option B, biotechnology
Explanation:
An applied science in an extended version of knowledge where already existing scientific knowledge is put to practical applications through the use of technology.
Biotechnology uses the knowledge obtained through biology subject and put it into uses such as genetic engineering, medicine, etc.
All three subjects geology , physics and chemistry are pure science subject that develop basic information or phenomena to understand the happenings of the natural world.
Hence, option B is correct
b.)redox reaction
c.)reduction
d.)oxidation
Answer:
The correct answer would be c.)reduction
Oxidation and reduction occur when transfer of electrons takes place from one element or atom to another.
The atom which receives or gains electron is said to be reduced while the atom which looses an electron is said to be oxidized.
For example, in cellular respiration oxygen gains electrons and H⁺ ions and is converted into water which is released as the byproduct of the process.
1/2 O₂ + 2 e⁻ + 2 H⁺ → 2H₂O
Answer: Option D
Explanation:
During the daytime when the sun is shinning bright in the sky and the sun rays reaches the earth.
The ground becomes warm by the effect of sunlight. This is because the sun radiates huge amount of heat from its surface.
This heat reaches the earth in the form of light energy. This heat is absorbed by the earth's surface and makes it warm.
Answer:
POINT PREVALENCE.
Explanation:
This accounts for the number of a population that develops a disease in a particular or specific time.