<span>Antibody-mediated (humoral) immunity is regulated by B cells. Antibodies produced by the B cells will protect the host from invading viruses and bacteria. Protective function of this type of immunization is found in host blood.
Cell-mediated immunity is regulated by activation of macrophages, natural killer cells (NK), antigen-specific cytotoxic T-lymphocyte. This type of immunity destroys pathogen (virus, bacteria, fungi, parasite) infected cells in the host body.</span>
The nucleus is involved in the DNA transcription/ replication
Answer: the aminoacyl tRNA synthetase
Explanation:
Before an amino acid can be incorporated into the growing polypeptide chain in the ribosomes, they must first recognize and be attached to a their cognate tRNAs through a process called tRNA charging/loading. This process also called aminoacylation is aided by the aminoacyl tRNA synthetases also called tRNA ligases. Failure of the enzymes to carry out the correct charging are determined resulting in cellular dysfunctions. The process occurs in 2 steps
1. The enzymes binds ATP to the amino acid to form a complex of amino acid-AMP.
2. The amino acid is then linked with tRNA and the AMP is released this the tRNA is "charged" and ready to function
Answer: beef from a cow
Explanation: A cow has a lot of fat
Answer:
true
Explanation:
stars can change bc Stars change over time. ... It is in the clouds of dust and gas that stars are born. As more and more of the gas (which is mostly hydrogen) is pulled together by gravity into a cloud, the cloud starts to spin. The gas atoms start to bump into each other faster and faster.
