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Discuss how the genetic code allows proteins to be synthesised with minimal errors taking place, including:
• triplet codes
• codon
• anticodon
• degenerate code
• non-overlapping
Discuss the functional role of these nucleic acids in protein synthesis and the locations of each stage involved in protein synthesis.
Explain the nucleotide structure and main features of the following nucleic acids:
• DNA – stages and enzymes involved in DNA replication
• RNA – mRNA, tRNA, rRNA, siRNA
good day, please select all correct options:
Interferon-gamma (IFN-γ)
A. activates macrophages.
B. is secreted by natural killer (NK) cells.
C. lyse virus-infected cells.
D. is secreted by B-cells.
E. is an opsonin.
Macrophages
A. carry class II major histocompatibility complex (MHC) antigens on their plasma membrane. B. secrete tumour necrosis factor (TNF).
C. are activated by interferon-gamma (IFN-γ).
D. are antigen presenting cells.
E. secrete IgG.
Good day please select all correct options, thanks
In an HIV-positive person, body fluids that contain a high concentration of the virus include
A. blood.
B. semen.
C. saliva.
D. breast milk.
E. cerebrospinal fluid.
good day, please select all correct options:
B lymphocytes
A. are part of the innate immune system.
B. secrete immunoglobulins.
C. are cytotoxic.
D. are stimulated by CD4 T lymphocytes.
E. become plasma cells.
I'm trying to localise a protein called "Protein B."
I've made a vector which encodes protein B that is tagged with an epitope derived from the flu virus. This vector is then transformed into a human cell line, and antibodies to the flu virus will be used to locate the protein.
2 staining procedures are done, one with no alcohol, and one with 2% (v/v) alcohol.
In the staining with no alcohol, you can see uniform staining of the area outside the nucleus.
In the staining with 2% alcohol, you see speckled staining in the area outside the nucleus.
I know that protein B is located in the mitochondria/cytoplasm.
My question is: What does the uniform staining vs speckled staining indicate? Also, why does this type of staining occur?
Good day, please select all the correct options. Thanks
CD4 T-lymphocytes:
A. are helper cells
B. are activated by major histocompatibility complex (MHC) class I molecules.
C. inhibit activation of B cells.
D. stimulate B cells to switch the class of immunoglobulin expressed.
E. are part of the innate immune response.
I need help with Pedigrees. I do not have money. I am a grade 12 student and I really need help with 2 assignments because my teacher keeps saying I am doing them all wrong
