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solmaris [256]
3 years ago
8

Which of the following most accurately describes the process that must occur when working with research animals covered by U.S.

federal regulations? The research team must obtain IACUC approval for the proposed research procedures prior to starting the work.
The research team can start the project but must receive IACUC approval before its work is published.
The research team can start the project while its protocol is under review by the IACUC but must stop if the IACUC rejects the protocol.
The research team can start the project but must receive IACUC approval before its work is submitted to a journal.
Biology
1 answer:
belka [17]3 years ago
4 0

Answer:

Option (1).

Explanation:

IACUC (Institutional Animal Care and Use Committee) is the group that determines the research facilities keep the accordance of the animal welfare act. The ethical issue must be related to animals.

To proceed any research U.S.federal regulation needs approval of IACUC. The research team requires the approval of IACUC for the research proposal before starting his research on the animals. Researchers must follows the protocols made by IACUC.

Thus, the correct answer is option (1).

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MHC class II will interact with a TCR and
DanielleElmas [232]

Answer:

CD4 on the surface of helper T-cells.

Explanation:

MHC class II ( major histocompatibility complex) molecules are processed from the exogenous source. The presentation of  antigen on cells are important for the adaptive immune response.

MHC class II interact with CD 4 present on the surface of T helper cells. This interaction is important for the generation of an immune response. Helper T cells can release cytokines and can perform phagocytosis.

Thus, the correct answer is option (C).

6 0
3 years ago
A lichen is a combination of fungus and algae that lives on the sides of trees, rocks, and other materials. The fungus provides
Softa [21]

Answer:

Mutualism

Explanation:

Organisms in an ecosystem interact with one another from time to time. The close interaction between two organisms is referred to as SYMBIOSIS. Symbiosis is of different types depending on the how it affects the involved organisms. The example in this question depicts MUTUALISM.

Mutualism is the type of symbiotic relationship between two organisms in which both organisms benefit from the relationship. This is the case of the LICHEN, which involves the Algae and Fungi. The algae benefits by making use of the water and minerals supplied by the fungi while the fungi benefits by using the food the algae produces via photosynthesis.

8 0
3 years ago
Why is the term cell theory appropriate?
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7 0
4 years ago
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They're called Enzyme. They're made up of proteins. They act as a biological catalysts that can speed up chemical reaction. They have an active site that certain substrates binds into it and form a product. Enzyme works under optimum pH and temperature and the active sites are not changed unless denatured.
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During the day the sun burns up and the sand soaks up the heat causing a oven effect. 
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