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Alla [95]
3 years ago
14

What would be a good hypothesis and null hypothesis for this scenario?

Biology
1 answer:
stira [4]3 years ago
7 0

Answer:

Hypothesis: The increased period of exposure to the infected or sick individual (or pathogen carried by the sick individual) increases the number of individuals getting the infection and falling sick.

Null hypothesis: The increased period of exposure to the infected or sick individual (or pathogen carried by the sick individual) does not increase the number of individuals getting the infection and falling sick.

Explanation:

:) rate if it helps!

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Dan ""threw out his back"" after lifting heavy furniture and complained of pain radiating down the back of his right leg. Use an
Blababa [14]

When Dan "threw out his back", the anatomical terminology regions with the possibility of the injury occurrence is in alignment with the lumbar segment of the spine, having and impact on the sciatic nerve and leading to pain which is often known as the posterior region of the lower right limb. The imaging technique that would be employed in the diagnostics is Nuclear Magnetic Resonance Imaging.

Explanation:

One of the aftermath of physical activity - comprises of lifting weighty objects - is lower back injury, which often varies from painful muscle contraction, muscle tearing, or damage to the inter-vertebral disc of the lumbar spine.

In Dan's situation, the intent to lift the furniture could result to:

Protrusion of the disc that is found admist two vertebrae, known as herniated disc.

Lumbar disc hernias could results in compression of the sciatic nerve.

Sciatic nerve damages would lead to a variety of symptoms including pain or neurological disorders - which includes tingling, numbness, painful current, amidst others - in the region of that nerve.

Dan happened to feel pain at the back of his right lower limb, where the damage sciatic nerve flows through.

Which imaging technique would you prescribe to diagnose a spinal problem?

The best imaging technique to estimate the possibility of the occurrence of lesion with the diagnosis of a spinal injury is the Magnetic Resonance Imaging, which permits in studying the bone structure and the soft tissue (cartilage, muscle) of the influenced region.

The X-rays would only permit observation of the structures of the bones, that plays a important role in diagnosing fractures, deformities or structural variation, but would not reflect the actual form of the ligaments, inter-vertebral discs or muscle.

5 0
3 years ago
How can you tell if a cell is alive?
Sedaia [141]

Normally, when a cell dies, the outside morphology changes, in other words, the cell looks different. For example, if you are growing cells that attach to a plate, when they die they are not able to attach to the bottom of the plate anymore, and they will appear floating in the medium. I am not sure of what kind of cells you are studying; if you told us it would help as to suggest ways of distinguish between live/dead cells.


8 0
4 years ago
Denticulate ligaments are thickenings of _________ that extend and fuse with the ______ and inner surface of the _____a.arachnoi
Lemur [1.5K]

Answer:

* ARACHNOID MATER

*DURA MATER

*PIA MATER

Explanation:

denticulate ligaments are bilateral extensions of pia mater that thickening the component of collagen of pia mater.It anchors the spinal cord to the dura mater.They are produced by the pia mater of the spinal cord.They provide stability to the spinal cord within the vertebral canal.

Arachnoid mater helps protect the brain and spinal cord from sudden impact. It is connected to the dura mater at the side that is very close to the central nervous system.

Dura mater refers to the membrane that envelops the arachnoid mater. It surrounds the dural sinuses and also provide supports to it. Dura mater carries blood from the brain toward the heart.

The pia mater is part of pseudolymphatic system and it's referred to as the thin fibrous tissue that allows blood vessels to pass through the brain.

5 0
3 years ago
Read 2 more answers
In snapdragon the gene that affects flower color has two alleles: red (R) and white (W). In heterozygous individuals, the phenot
Leya [2.2K]

Answer:

The correct answer is - 50%

Explanation:

In the heterozygous condition, there is always one allele of dominant and one allele of recessive present together and during gamete formation, they assort independently. The probability of the pink flower that is RW can be found by punnet square:

      R     W

R    RR   RW

W   RW    WW

here, out of four two cases is of heterozygous or pink flower so the ration would be 2/4 or 1/2 or 50%

6 0
3 years ago
Which of these glands is NOT an exocrine gland?
xz_007 [3.2K]

What are the choices? You didn't write them out

3 0
3 years ago
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