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ser-zykov [4K]
3 years ago
5

Which of the following is NOT involved in the inflammatory response? A. Activation of B cells by cytokines from TH cells. B. Adh

esins, which cause phagocytes to adhere to capillary walls. C. Secretion of IL-6, a pyrogen. D. Dilation of capillary walls. E. Secretion of PMNs to the tissues through capillary walls
Biology
2 answers:
azamat3 years ago
7 0

Answer: Option D.

Explanation:

Inflammatory response occurs when there is an injury to body tissues which might be caused by bacteria, trauma or toxins. The affected tissues now secrete chemicals which cause the blood vessels to release fluid thereby causing swellings. The white blood cells secrete chemicals and release into the tissues to protect it from outside pathogens.

Dilation of capillary walls is not involved.

lions [1.4K]3 years ago
4 0

Answer:

b

Explanation:

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Help me, please!!! This is a Bio quiz due tomorrow.
tamaranim1 [39]

Answer:

2] conserve salt 1] requires the presence of a membrane protein

Explanation:

easy your welcome enjoy your A+

7 0
2 years ago
Some molecules found in foods are known to be capable of driving DNA methylation or DNA demethylation. For example, folic acid (
Rufina [12.5K]

Answer: Eating excessive quantities of such molecules could deregulate this process, increasing methylation and repressing the expression of genes that should normally be expressed.

Explanation:

DNA methylation is one of the epigenetic mechanisms involved in the regulation of gene expression, because it is a process by which methyl groups are added to DNA.

Methylation then modifies the function of DNA when it is found in the promoter gene, it is essential for normal development and is associated with a number of key processes, including genomic imprinting, inactivation of the X chromosome, repression of repeating elements, aging, and carcinogenesis. Usually, <u>it acts to suppress gene transcription.</u>

For example, folic acid is essential for the rapid cell division that occurs during early fetal development and it also plays an important role in methylation and thus in gene regulation. <u>The metabolism of these vitamins is aimed at achieving adequate levels of  DNA methylation, necessary for the cellular processes</u>. Eating excessive quantities of such molecules could deregulate this process, <u>increasing methylation and repressing the expression of genes that should normally be expressed</u>.

3 0
3 years ago
how do engineers use models and earthquakes simulations to test designs for earthquake resistant buildings and structure
Oksana_A [137]

In Earthquake testing, the engineers are using the world largest shake tables to test new construction methods for buildings in the areas prone to the earthquake.

<u>Explanation:</u>

They believed that they have the devised a system to build the taller wood-frame buildings that can still safely withstand even very powerful tremors. To withstand the collapse, the buildings need to redistribute the forces that travel through them during a seismic event.

Shear wells, cross braces, diaphragm, and moment-resisting frame are the central reinforcing the building. Shear wells are the technology of the useful building. That helpful to transfer the earthquake forces.

6 0
3 years ago
What are four advantages of seeds?
hichkok12 [17]

Answer:

See Explanation

Explanation:

1: Seeds provide a protective coat so that the plant can develop when it finds nice soil.

2: Seeds have pre-packaged foods sources.

3: Seeds are very easily dispersed by animals, wind, water, ect...

4: Seeds have the capability to survive without water.

7 0
3 years ago
You have isolated a highly lethal toxin from an octopus that you have reason to believe binds with high affinity to the pore ope
Brilliant_brown [7]

Answer:

To determine the effect of toxin binding, you perform a Competitive Binding Experiment

Explanation:

Competitive binding experiments are very relevant when matters relating to cellular and or molecular toxicity are concerned.

They are used to determine the binding of a single concentration of labeled ligand in the presence of various concentrations of unlabeled ligand.

They are important because:

1. Validate a direct binding assay

2. Confirm whether or not a drug binds to the receptor

3. determine and explore how low-affinity drugs and receptors interact and it's resultant effects

Cheers                                  

5 0
3 years ago
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