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3. Phosphorus represents only 1% of human body weight. However, it is a buildingblock of very important macromolecules. Describe some of the cellular functionsthat would not be possible without phosphorus.
2. What happens to the spectral lines of a starthat is moving toward Earth?A. The waves spread out, and the frequency ofeach line increases.B. The waves spread out, and the frequency ofeach line decreases.C. The waves compress, and the frequency ofeach line increases.D. The waves compress, and the frequency ofeach line decreases.
The intervention of extraterrestrials has been used to explain the Bermuda Triangle, a region of the Atlantic Ocean where ships and planes are frequently lost, leaving no evidence behind. How would this explanation best be characterized? Science Religion Astronomy Pseudoscience
Grapes growing on a vine are observed to shrink slightly during the day and increase in size at night. This is because: a. developing fruits, such as grapes, transpire a lot of water to stay cool. b. photosynthesis to produce sugar occurs in the light, but respiration and, therefore, the growth of new cells occurs mostly in the dark. c. in leaves, phloem flow to growing sinks only occurs when the stomata are closed, because the transport capacity of the xylem is too small to supply water for both transpiration and phloem flow. d. during the day, transpiration pulls on the water in the whole plant, causing the grapes to shrink slightly.
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Answer:
Damage to the villi means less lactase released, so the body can't break down dairy.
Explanation:
If the small intestine is damaged, then that can mean that the villi are damaged. The villi usually release lactase, so this process will be compromised.
Less lactase released means that the body will have less of the enzyme required to break down lactose, the sugar present in dairy. Thus, individuals with celiac disease will struggle to digest dairy products
B. Algae is a meaningful term for taxonomists.
C. Algae represent a group of closely related organisms that share a common ancestor.
D. Algae is a general term for several aquatic organisms that are photosynthetic.
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D. or B.because algae is cabable of producing oxygen through photosynthesis
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Answer:
Water initially moves into the root hair cells by osmosis, because the mineral content of the cells is higher than that of the surrounding environment. Thus, a root pressure is established and extends into the microscopic tubes of the xylem.
Explanation:
7.68
3.08
2.35
4.07
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Answer:
The correct answer is 7.68
Explanation:
Isoelectric point (pI) is the pH at which the amino acid has net a charge of zero. We have to choose the two values of pKa at which the neutral form of the amino acid is predominant. Histidine (Hys) is a basic amino acid. From pKa's data, we deduce:
pKa1 = 2.3 (corresponds to α- carboxyl group)
pKa2= 6.04 (corresponds to R group)
pKa3= 9.33 (corresponds to α- amino group)
Since it is a basic amino acid, the neutral form will exist between the higher pKa's values. Thus, the pI will be in a pH value between 6.3 and 9.33.
So, we have to calculate the average of pKa2 and pKa3:
pI= (pKa2+pKa3)/2= (6.04+9.33)/2= 7.68
Therefore, the pI of Hys is 7.68.
Be sure to identify the inheritance pattern and thoroughly explain how genes & alleles interact to produce this phenotype pattern.
PLEASE READ GRAPH ATTACHED TO THIS thanks
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Answer:
The graph shows the height in inches of determined human population and the pattern it shows is due to the height variations that exist between individuals, due to different factors, where the average height in the population is close to 69 inches, and most of the population has heights between 67 and 72 inches.
Explanation:
The height of individuals is the measurement, from head to toe, which is made standing up and barefoot.
The graph shows the frequency of people who have a specific height, where:
Claim: According to the graph, most people are between 67 and 72 inches tall. Heights below 63 and above 72 inches are less frequent and the average person is about 69 inches tall.
Evidence: The data provided by the graph support the claim that there is variation in height in the human population. When data on anthropometric parameters are to be obtained, a sample is chosen, measured under the same conditions and then taken to a graph showing the results.
Reasoning: variations in human height respond to several factors, mainly genetic and environmental factors.
Inheritance plays an important role in determining an individual's height, although it is a polygenic pattern of inheritance, where multiple genes determine the height an individual will have.
In general, the height between men and women differs but, in addition, the inheritance of this parameter is linked to race. There is no single gene that determines whether a person will be tall or short, nor are there dominant or recessive alleles.
The combination of information from several genes will result in the phenotypic expression of height in an individual and can increases the genetic variability for this trait. It should also be taken into account that genetic disorders can affect the development of normal height.
Environmental factors and habits, especially food and family environment, are determinants of the height a particular individual will have.
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Answer:
Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. ... Minerals in a rock buried in soil will therefore break down more rapidly than minerals in a rock that is exposed to air.
Explanation:
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