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Many different types of mutations can occur within the body. Sickle cell anemia is a disease that occurs when a mutation in a base pair of the hemoglobin beta gene causes a single replacement of the amino acid glutamic acid by the amino acid valine. As a result of this mutation, the individual’s blood cells take on a sickle shape under certain conditions and form clusters that can block blood vessels and cause organ damage. Which type of mutation causes sickle cell anemia? A)silent B)missense C)insertion D)frameshift

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The right option is; B)missense

Missense mutation is the type of mutation that causes sickle cell anemia

A missense mutation is a type of nonsynonymous substitution in which the change of a single nucleotide (base pair) influences the genetic code and results in a codon that code for a different amino acid. This type of mutation can affect the function of the protein, and it is responsible for human diseases such as, sickle-cell anemia and Epidermolysis bullosa.

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And whatever he touched in that rich fortress of his soul sprang into golden life: as the years passed, the fruit trees—the peach, the plum, the cherry, the apple—grew great and bent beneath their clusters. His grape vines thickened into brawny ropes of brown and coiled down the high wire fences of his lot, and hung in a dense fabric, upon his trellises, roping his domain twice around. They climbed the porch end of the house and framed the upper windows in thick bowers. And the flowers grew in rioting glory in his yard—the velvet-leaved nasturtium, slashed with a hundred tawny dyes, the rose, the snowball, the redcupped tulip, and the lily. The author uses sensory details in this excerpt to create images of excess and riches, to suggest Gant’s interest in materialism. shades and barriers, to suggest Gant’s need for privacy. colorful sceneries, to suggest Gant’s artistic aptitude. bountiful harvests, to suggest Gant’s agricultural success.

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Since a tiny tender child of four,
There’s nothing that I dreamt of more,
Than to jump aboard a great big ship,
A telescope, a map, a sword, by my hip,
To feel the sea breeze in my hair,
To stroke my parrot on the wood chair,
To be bold and brave and happy as can be,
To trek and travel and sail the seven seas.

8 lines. Rhyme scheme aabbccdd. If I managed to write that in about 4 minutes, you could write something much better and longer in like 30 minutes. You can use my rubbish poem as inspiration lol. Good luck X

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There are 24 students in a math course at your school. How many tables must be put together to seat a group of six students? How many six person clusters would be needed for the entire class of 24? a. 5 tables, 3 clusters b. 3 tables, 4 clusters c. 2 tables, 4 clusters d. 4 tables, 2 clusters

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Newtons method is a way to approximate the zero of a function. 
It is a recursive method such that the output becomes the new input, the goal is to approach the zero by having the inputs change by a smaller amount each iteration until that change is nearly 0.

First, let me explain where the method comes from.
The formula is really just a manipulation of the slope formula using 2 points; the point tangent to the curve, and the point where the tangent line crosses the x-axis.
If (x,y) is point on curve, then (x*,0) is point on tangent line at x-axis.
 m = frac{dy}{dx} = frac{y - 0}{x - x^*}

Rearranging for x*:
x^* = x - frac{y}{dy/dx}

This is the formula for newtons method. y = f(x), dy/dx = f'(x)
Now what happens is (x*,y*) becomes new point on curve with new tangent line with different slope.
This new line will cross x-axis at different point x** and so on until eventually f(x) gets really really close to 0.

Now for the example:
you need to take derivative f'(x) using product rule:
f(x) = x tan(x) - 1 \  \ f'(x) = tan(x) + x sec^2 (x)

Then its just a matter of plugging in values for x, and repeating until we get close to a zero.

First plug in x = 1
x_1 = 1 - frac{(1)(tan 1) - 1}{tan 1 + (1)sec^2 (1)} = 0.888136 \  \ x_2 = .888136 - frac{f(.888136)}{f'(.888136)} = 0.861465 \  \ x_3 = .861465 - frac{f(.861465)}{f'(.861465)} = 0.860335 \  \ x_4 = .860335 - frac{f(.860335)}{f'(.860335)} = 0.860334 \  \ x_5 = .860334 - frac{f(.860334)}{f'(.860334)} = 0.860334

Now we can stop because x5 = x4 to 6 decimals, this means f(x) is very close to 0 and will serve as a good approximation for a solution.

Final Answer:
x = 0.860334

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Population I stars are found in what area of the Milky Way? A. Central bulge B. Globular clusters C. Halo D. Spiral arms

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Posted in Physics

Spiral Arms is the definite answer


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In some areas of the world, large masses of moving ice create valleys through weathering and erosion. This is an example of _______.

Answer:

Mass wasting

Explanation:

Mass wasting is defined as the downward flow of earth materials such as soils, rocks under the influence of gravity. It involves both the weathering and erosion process. The erosion caused by the downward moving ice is an example of mass wasting process. In simple words, it is also known as the glacial erosion. The glaciers while moving downward, plucks the materials that undergoes weathering and these materials are further carried downward along a slope due to influence of gravity. This forms a valley as it flows downward and the eroded materials are deposits at the base of those mountain slopes.

Posted in Physics

What elements are formed by stars having a mass of one to eight suns??

The answer is Helium to carbon & oxygen. Depending on the mass of the star, the types of elements formed at its core depend on its gravitational force that can fuse lighter elements to heavier elements. All stars can fuse hydrogen to helium at their core. Stars at least 8 times the sun’s solar mass can further fuse helium to carbon and oxygen. Massive stars of over 8 solar masses have immense gravitation forces at the core they can further fuse the carbon and oxygen to silicon and iron.

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