Aerobic respiration involves the breakdown of glucose, producing carbon dioxide, water, and ATP, which is energy. This process is followed by three steps: Glycolysis, the Krebs Cycle, and electron transport.
Glycolysis takes place in the cytoplasm of the cell. Glucose is broken down into two pyruvates, which are 3 carbon molecules. NADH, a large molecule is also produced because the pyruvate is oxidized or “groomed”. Pieces of the molecule is chopped off, releasing NADH, acetyl CoA, and C02, which diffuses out of the cell.
In the Kreb’s cycle, AcetylCoA is brought into the cycle, where a set of reactions occur to release 2 ATP, NADH, FADH2, and C02.
Oxidation phosphorylation is the third step, including the electron transport chain. Electrons are delivered by NADH and FADH2. Hydrogen atoms go through a redox reaction, meaning atoms either gain or lose electrons. Oxygen is highly electronegative, so it pulls electrons through the electron transport chain. Electrons provide the energy to pump hydrogens across the membrane. Eventually, protons will flow down the gradient through the ATP synthase, creating ATP.
The phospholipid bilayer is a non covalent aggregate; the lipids and the proteins molecules are held together chemical interactions such as vander waal's forces and hydrogen bond. The vander waals forces hold the hydrophobic tails together while the hydrogen bond helps to stabilize the lipid bi-layer structure.
Answer:
B) I and II
Explanation:
Male reproductive system produce gametes in the testis which is the part of male reproductive system. Testis are two in number normally which compose of seminiferous tubules which have spermatogenic cell which are responsible for the production of spermatids with the help of sertoli cells present in the seminiferous tubules.After production of gametes the spermatid are delivered to the female reproductive system by copulating organ which in human is penis.the sperm 1st produces in the semeniferus tubules then transfer in to the rate testies ,epidydemis then vas deference and then urethra and then outside the body.
Average speed of the car
10km/(15min/60)
=40km/h