Answer:
The superior vena cava is formed by the merging of the right and left brachiocephalic veins.
Explanation:
The superior vena cava is one of the main veins of the human body, it is responsible for receiving blood from the head, neck, upper chest and upper limbs. It is formed by the union of the right and left brachiocephalic veins, they originate from the junction of the subclavian vein with the internal jugular vein to form the right and left brachiocephalic venous trunk, both trunks join or merge into a single trunk and they form the superior vena cava, which flows into the upper part of the right atrium.
The major difference between lactic acid and alcohol fermentation is the products that are produced. In the 'L.A' fermentation, lactic acid and 150 kJ of energy is produced while in alcohol fermentation, alongside the alcohol (ethanol) and the 210 kJ of energy, carbon dioxide is produced.
In lactic acid fermentation:
C₆H₁₂O₆ ₋₋₋₋₋₋₋₋> 2C₃H₆O₃ + Δ150 kJ
while in alcohol fermentation:
C₆H₁₂O₆ -----------> 2C₂H₅OH + 2CO₂ + Δ210 kJ
Answer:
Explanation:
he term nucleic acid is the overall name for DNA and RNA. They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.
Answer:
Option B, Birth rates are high
Explanation:
A population pyramid with wide base and tapered at top shows that the number of young people in a given population are higher than people of other age group. This usually happens when the birth rate is high. This kind of population pyramid can be seen for countries with lower rate of development or are under developed. For example – Nigeria, Mexico, Bangladesh have such population pyramids
