It is important to identify compensations seen during the modified thomas test because option D: most people have short/stiff anterior hip muscles.
The modified Thomas test measures the femur's angle of abduction in relation to the pelvis, which is an objective measure, and the pelvic position is constant when comparing results from one test to another. The lower extremity on the concerned side won't be able to stretch all the way at the hip if the iliopsoas muscle is short or there is a contracture. This results in a favourable Thomas test result. This therefore, implies that option D is the right choice.
A psoas dysfunction may occasionally coexist with a very flexible patient's Thomas test being normal. However, a positive test is a good indication of psoas hypertonicity in the patient with a normal hip joint.
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Answer:
Explanation:
A raft is a flat-bottom structure made of planks or barrels that has the capacity to float on water. While an ecosystem is a community of living organisms (biotic) interacting with there non-living (abiotic) environment as an ecological unit.
A raft by design cannot withstand much load because of it's size or can only accommodate only one type of organism at a time but an ecosystem generally accommodates a community (different organisms), hence the carrying capacity of an ecosystem is way larger than that of a raft and indeed a raft can be part of an ecosystem at some point
Answer:
Alfred Hershey and Martha Chase
Explanation:
In 1952 Alfred Hershey and Martha Chase were working with bacteriophages or phages, which are viruses that infect bacteria. They knew that a phage had an outer shell of protein and an inner core of DNA. In addition, from the electron microscope observations, they also knew that during infection the virus attacks the bacterium by its tails and introduces its genetic material into the bacterium to multiply using its metabolic machinery. They radioactively labeled two sets of phages: one with 32P (which marks only DNA) and another with 35S (which marks only proteins). In two parallel experiments, they infected bacteria with viruses marked on their DNA and with viruses marked on their proteins. The cultures were shaken with a mixer to separate the virus particles from the bacterial coatings. They then performed a centrifugation to separate the phages from the bacteria, so that the larger and heavier bacteria remain in the pellet, while the phages remain in the supernatant. They found that the radioactivity of 35S appeared in the supernatant while that of 32P appeared in the sediment, from which new radioactively labeled virus particles appeared, demonstrating that DNA was the genetic material.
Answer:
Yes
Explanation:
A fly without wings is often referred to as a "walk" or "crawl". also i love peanut butter
Formed by mud and sand in rock
