Answer:
Following words will be filled in the blanks in the sequence -
- Red bone marrow
- Progenitor Cell
- Myeloid Progenitor
- Lymphoid Progenitor
- Glycoproteins
Explanation:
Hemopoiesis is the process of formation of blood cells in bone marrow. It occurs in Red bone marrow of bones. All the blood cells and immune cells arise form a type of cell called hemopoitic stem cell. It is a multipotent cell. during hemopoiesis the stem cell differentiates along one of the two pathways - lymphoid progenitor or myeloid progenitor.
Answer:
Alfred Hershey and Martha Chase
Explanation:
In 1952 Alfred Hershey and Martha Chase were working with bacteriophages or phages, which are viruses that infect bacteria. They knew that a phage had an outer shell of protein and an inner core of DNA. In addition, from the electron microscope observations, they also knew that during infection the virus attacks the bacterium by its tails and introduces its genetic material into the bacterium to multiply using its metabolic machinery. They radioactively labeled two sets of phages: one with 32P (which marks only DNA) and another with 35S (which marks only proteins). In two parallel experiments, they infected bacteria with viruses marked on their DNA and with viruses marked on their proteins. The cultures were shaken with a mixer to separate the virus particles from the bacterial coatings. They then performed a centrifugation to separate the phages from the bacteria, so that the larger and heavier bacteria remain in the pellet, while the phages remain in the supernatant. They found that the radioactivity of 35S appeared in the supernatant while that of 32P appeared in the sediment, from which new radioactively labeled virus particles appeared, demonstrating that DNA was the genetic material.
Every population has limiting factors
Saturated zone
The correct answer is saturated zone. This area contains permeable rocks and soil here is totally filled with water or we can say is saturated with the water. This zone is called as saturated zone.
Answer:
Everybody knows that some organs in the human body are necessary for survival: you need your brain, your heart, your lungs, your kidneys...
KIDNEYS? Absolutely. Even though you won't find a Valentine's Day card with a kidney on the cover, the kidneys are every bit as important as the heart. You need at least one kidney to live!
