Answer:
Homologous structures
Explanation:
Homologous structures are structures (i.e skeletal elements) that come from the same common ancestor but they appear in the descendants of the ancestor with some modifications, normally due to different functions.
The wing of bats, flippers of whales or dolphins and the forelimbs of horses is a common example of homologous structures. Bats, whales and horses are vertebrates and all came from the same vertebrate common ancestor.
The common ancestor of these organisms had the bones that make up these structures, but through evolution those bones that make up the homologous structure were modified to serve different functions. They were modified for the flight in bats, for swimming in whales and for life on land in horses.
Answer:
A) Anaphase I
Explanation:
During the Anaphase I of meiosis, the pairs of homologous chromosome split up. During this phase sister chromatids of each pair is formed and start moving towards the opposite poles. By the end of anaphase out of each pair of sister chromatids , reaches to the poles of the spindle fibre. During the metaphse of meiosis the chromosomes start their movements and arrange themselves between the poles and the equator of the spindle.
Answer:
Please read explanation section.
Explanation:
MPF is a protein kinase. It catalyzes the transfer of a phosphate group from ATP to target proteins.
One of the pathways which are stimulated by the MPF is an enzyme that destroys cyclin. This means it stimulates the cyclin pathway. As mitosis gets initiated, the enzyme that breaks down cyclin becomes activated, and levels of cyclin start to be dropping down. The declining levels of cyclin lead to reduced levels of the MPF.
<h3><u>Answer: </u></h3>
A. NO, the equation is NOT balanced.
B. C₆H₁₂O₆ + 6 O₂ → 6 H₂O + 6 CO₂
<h3><u>Explanation:</u></h3>
- The chemical equation of cellular respiration is given by:
C₆H₁₂O₆ + 6 O₂ → 6 H₂O + 6 CO₂
Where glucose or sugar is broken down in presence of oxygen in presence of oxygen to yield energy in the form of ATP and water and carbon dioxide as a byproduct.
- The given chemical equation is not balanced as the number of atoms of each element on reactant side are not equal to those on the product side.
- Initially,there are 12 Hydrogen atoms, 18 Oxygen atoms and 6 Carbon atoms on each side. To balance the equation we put a 6 on carbon dioxide and a 6 on water on the product side.
- The balanced equation will be;
C₆H₁₂O₆ + 6 O₂ → 6 H₂O + 6 CO₂
