B. Cloning because the selections don’t make sense
Answer: Similarities in amino acid sequence strongly suggest common ancestry
Explanation:
The chemical make-up and biochemical process of all organisms are as very similar. For example, all organisms
- are build up of the same types of complex molecules such as carbohydrates, lipids, proteins (polymers of amino acids) and nucleic acids
This similarity strongly suggest common ancestry for all organisms, thus leading to evolution of individual species
Answer:
help to form a plug to stop bleeding during hemostasis
Explanation:
Platelets are one of the three types of blood cells. Platelets are involved in the formation of blood clots. Platelet vesicles have clotting factors and other substances required for the formation of a platelet plug during homeostasis. A break or damage in the lining of blood vessels exposes the underlying collagen fibers and the connective tissues. Platelets adhere to these fibers to initiate the formation of a platelet plug. These adhered platelets release substances to trigger the other platelets to join and form aggregate. This aggregate of platelets is called a platelet plug.
Explanation:
<em>Human DNA Polymerase</em><em> </em><em>cannot be used in PCR</em><em> </em><em>beca</em><em>use</em><em> </em><em>it </em><em>i</em><em>s</em><em> adapted for a range that covers our body temperatures - a narrow range around 37°C. It can't get much above that before it starts to lose function and much below it stops having sufficient energy to move enough to react.</em>
Answer:
Bacteriophages are attaching to bacterial cell wall and injecting genetic material.
Explanation:
Bacteriophage:
A bacteriophage (bacteria eater) is a type of virus that infects bacteria. Bacteriophages are composed of genetic material (DNA or RNA) enclosed in a protein shell or capsid.
Following are steps of bacteriophage infection:
- Bacteriophage attaches to cell surface receptors on the surface of the bacterium.
- Depending upon the type of phage, the bacteriophage either injects its DNA or RNA into the bacterium or enters as a whole. In this image, the bacteriophage T4 is represented which injects its genetic material into the host cell.
- The phage's genetic material hijacks the cellular machinery of the host and replicates itself within the host.
- After replication, the phages burst open the bacteria cell and are released. This is called the lytic cycle of bacteriophage infection.
- In another type of infection cycle, called the lysogenic cycle, the bacteriophage genome gets incorporated into the host genome, known as a prophage. This prophage lies dormant.
* The second step of the infection cycle is pictured here.
