Answer:
Fertilization, the penetration of an egg by a sp3rm, occurs in the oviducts. This is the main event of s3xual reproduction and determines the genetic constitution of the new individual. Human s3x determination is a genetic process that depends basically on the presence of the Y chromosome in the fertilized egg.
Explanation:
Sorry if this doesn't help.
Answer:
Option B, electrochemical signals
Explanation:
The first process that initiates the muscle contraction is the binding of calcium ion with troponin protein. After this chemical interaction, the active binding sites of actin gets exposed. After this myosin binds to the actin sites thereby forming a high-energy head bridge and releasing the pi. Mysosin now goes to a lower energy state by undergoing conformational change. This causes power stroke and actin filament is pulled towards the M-line. Later on the muscle contracts by shortening sarcomere.
This entire process is an electrochemical process. hence option B is correct.
Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur because DNA contains phosphorus and no sulfur.
Answer: Mass flow or bulk flow is the movment of substance in big masses or something moving in a big group.
Explanation:
Its kind of like a river or blood flowing through your veins because its a mass of a substance moving in a group.
C. How all organisms create energy
cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.