Answer:
A) option B, two homozygous recessive plants is correct
B) A, B, D and E is correct
Explanation:
A) Given purple flowers are dominant over white flowers
Let P represents allele for purple color of flower while p represents white color of flower.
In order to create all white offspring from a cross, the parents must have homozygous recessive genotype i.e pp
Hence, option B, two homozygous recessive plants is correct.
B) Given pink flowers are dominant over yellow flowers. Let “Y” represents allele for pink flower and “y” represent allele for yellow flower
If two hybrid parents with genotype “Yy” are crossed, then following offspring will b eproduced –
Yy * Yy
YY, Yy, Yy, yy
Out of four , two are hybrid offspring, three genotype i.e YY, Yy, Yy have the same genotype and both YY and yy are homozygous for flower color,
Hence, option A, B, D and E is correct.
B) burst
C) shrink in size
D) remain constant in size
Answer: C
There are three different types of solution:
Hypertonic solution:
A solution that has more solutes that the cell.As a result more water exits a cell causing the cell to shrink.
Isotonic solution
A solution is said to be isotonic to a cell if it has the same concentration of solutes as the cell means equal amount of water are entering and leaving the cell so the cell size would remain constant
Hypotonic:
A solution that has fewer solutes that the cell. As a result more water enters a cell causing the cell to swell or even burst
country music for three hours each day. Plant D does not listen to any music at all.
2. Based on the experiment in the scenario, which visual aid would be most helpful in showing the change in the plants' heights over time?
A. A line graph
B.A timeline
C. A bar graph
D. A pie chart
A line graph would more helpful showing the growth of the four plants over time. In the Y axis the height could be shown versus the time in the X axis.
natural selection
B.
DNA engineering
C.
genetic engineering
D.
selective breeding
Answer:
Fevers, pain in the muscles and joints, and rashes
Explanation:
You didn't provide any options, so I listed some of the symptoms that occur during a dengue fever.
Plz help w these
1. Answer is "it provides all the elements for lipids".
The elements of glucose are carbon, hydrogen and oxygen. Hence, if the molecule glucose were broken down, those elements are released.
The elements of lipids are same as glucose. But sometimes lipids contain sulfur and phosphorous.
In proteins there is nitrogen as element other than carbon, hydrogen and oxygen.
Nucleic acids also have carbon, hydrogen, oxygen, nitrogen and phosphorus as elements.
Hence, glucose molecule cannot provide all the elements for proteins and nucleic acids but can provide elements for most of lipids.
2. Answer is “NO”.
The four types of macromolecules are carbohydrates, lipids, proteins and nucleic acids. Elements of those macromolecules are as follows.
Carbohydrates - carbon, hydrogen, and oxygen
Lipids - carbon, hydrogen, oxygen sometimes nitrogen and phosphorus.
Proteins - carbon, hydrogen, oxygen and nitrogen sometimes sulfur and selenium.
Nucleic acids - carbon, hydrogen, oxygen, nitrogen and phosphorus.
Sugars are also type of carbohydrates. Hence, sugars can provide only carbon, hydrogen, and oxygen as the elements. Therefore, sugars cannot provide all the elements that needed to make four types of macromolecules. But sugars can provide elements to make carbohydrates and most of lipids.