Select all that apply.
The displacement method for measuring volume:
is not always accurate
can only be used to measure the volume of solids
may yield incorrect results if the matter is soluble in liquid
is the most precise way to measure the volume of a gas
The right answers are: B. and C.
This measurement technique is based on Archimedes' principle :
Any body immersed in a fluid at rest, fully wetted by it or crossing its free surface, undergoes a vertical force, directed from below upwards and opposite to the weight of the fluid volume displaced; this force is called Archimedean thrust.
For the theorem to apply, the submerged fluid and the immersed body must be at rest. It must also be possible to replace the immersed body with submerged fluid without breaking the balance, the counterexample being the stopper of a bathtub filled with water: if it is replaced by water it is clear that the tub is empty and that the fluid is no longer at rest. The theorem does not apply since we are in a case where the cap is not completely wet by the liquid and does not cross its free surface.
Based on the diagnostic results, what is the most likely cause of m.k.'s anemia?
Final answer:
Based on M.K.'s symptoms of proteinuria and hemoglobinuria, along with low hematocrit and sun-induced rashes, which are suggestive of hemolysis, the most likely cause of anemia appears to be autoimmune in nature. Referral to a rheumatologist for further testing, like the direct Coombs' test, will help confirm an autoimmune hemolytic anemia or identify other autoimmune causes.
Explanation:
Anemia is a condition characterized by an inadequate volume of red blood cells (RBCs), leading to reduced oxygen transport capacity and symptoms such as fatigue and weakness. While there can be many causes of anemia, including nutritional deficiencies, inherited disorders, and excessive bleeding, the case of M.K. presents hints towards a different etiology. The additional symptoms of proteinuria and hemoglobinuria, alongside a low hematocrit level, are indicative of hemolysis (the destruction of red blood cells). Combined with the emergence of rashes post sun exposure, these symptoms point towards an autoimmune cause of anemia, possibly related to an autoimmune hemolytic anemia (AIHA) or another related autoimmune disorder.
Given these findings, the primary care physician's referral to a rheumatologist is appropriate for further testing, such as the direct Coombs' test, to confirm the suspicion of AIHA or identify other potential autoimmune etiologies. Hemolytic anemia of this nature often results from the immune system mistakenly attacking and breaking down the body's own RBCs. Autoimmune conditions can be complex, and multiple diagnostic tests are typically needed to establish a definitive diagnosis and initiate the correct treatment.
Johannes wants to know whether soil, water, or both are needed for plant growth. He chooses to conduct experiments on a willow tree for five years to answer his question. How can his experimental methods be changed to improve his experiment?
Bacteria and fungi are important components of which cycle(s) by acting on dead organic matter and returning the nutrients) to the inorganic form
Which of these nutrients is destroyed by exposure to light?
List the four types of preauthorization or prior approval that may be used by some managed care plans.
Two hormones that have additive effects are called
Be-26 in order to dispose of plastic trash while boating what must you do
Answer:
wait until you return and properly dispose ashore
Explanation:
On a boat trip, you should never throw away the rubbish from the water trip. Throwing the river into the water will cause river pollution and harm the animals that live there. What you have to do is keep the trash with you, wait for the boat to return to land, and throw the trash in an appropriate and reserved place for it.
Thick, spongy mats of low-growing plants, primarily grasses, mosses, and lichens, are typical of the ____. select one:
The thick, spongy mats of low-growing plants, primarily grasses, mosses, and lichens, are typical of the arctic tundra. These are the coldest biomes. Thus, the correct option is A.
What is Arctic tundra?
The Arctic Tundra ecosystems are treeless regions which are found in the Arctic and on the top of the mountains, where the climate is cold and windy. Arctic Tundra lands are covered with the snow for most of the time of the year, but the summer brings bursts of wildflowers.
The Arctic Tundra region is the coldest of all the biomes in the ecosystem. Tundra biome is derived from the Finnish word "tunturi", means "treeless plain". It has frost-molded landscapes, with extremely low temperatures, very little precipitation, poor nutrient content of the soil, and short growing seasons throughout the year.
Therefore, the correct option is A.
Learn more about Biomes here:
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Your question is incomplete, most probably the complete question is:
Thick, spongy mats of low-growing plants, primarily grasses, mosses, and lichens, are typical of the ____.
A) arctic tundra
B) coniferous forest
C) tall-grass prairies
D) tropical forests
E) taiga
What actions and ideas of olympe de gouges stirred controversy?
Olympe de Gouges sparked controversy through her manifesto that demanded equal rights for women, which was radical during the French Revolution and led to her imprisonment and execution.
Explanation:The actions and ideas of Olympe de Gouges that stirred controversy included her drafting of the Declaration of the Rights of Woman and the Female Citizen in 1791. Gouges believed strongly in gender equality, asserting that women are born free with the same rights as men and should be eligible for public offices, positions, and jobs. Despite the progressive nature of the French Revolution, her ideas confronted strong resistance from a society unready for such change, ultimately leading to her imprisonment and execution.
To what extent does pleurozium affect nitrogen availability in northern forests of different successional ages