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Zina [86]
3 years ago
10

Are leaves changing color a chemical change

Biology
1 answer:
konstantin123 [22]3 years ago
5 0
One of the observable changes of a chemical change is the change in color. So, yes, leaves changing color is a chemical changes. This is brought about by biochemical reactions of the plant. The plant is composed of different pigments like chlorophyll, carotenoids and anthocyanins. The dominant one is chlorophyll which gives leaves its green characteristic cholor. The chlorophyll is abundant in plants because it is responsible for the process of photosynthesis. But when the season changes to longer nights and less sunlight, the chlorophyll cannot be used. So, it spends it reserves through other pigments. Hence, it changes color. A yellow leaf has dominant caretonoid pigment.
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What does the lack of nourishment for the surviving plant in a raisin in the sun most likely reflect?
kenny6666 [7]
The options to this question are:

A. The strength of Mama's children
B. The hope in Walter's dream
C. The sour feelings among the characters
D. The need to embrace

The best answer is: 
the lack of nourishment for the surviving plant in a raisin in the sun most likely reflects  "The strength of Mama's children".

<span>A plant in a raisin basically represents a mama's dream that there will a day when she will have her own house with a small garden in the backyard.</span>

5 0
3 years ago
A cross between pea plants with red flowers and plants with white flowers resulted in all offspring with pink flowers. this expe
iris [78.8K]

Answer:

d: incomplete dominance

Explanation:

incomplete dominance is inheritance in which one allele for a specific trait is not completely expressed over its paired allele. this results in a third phenotype in which the physical trait is a combination of both alleles.

6 0
3 years ago
Random changes in the dna sequence in a chromosome are called
vladimir1956 [14]
Is they are random changes I believe they should be mutations
4 0
2 years ago
Which of the following is not a type of galaxy?
TEA [102]
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6 0
2 years ago
Match each leukocyte to its normal percentage in a differential cell count. A. 50-70% B. 20-40% C. 2-8% D. 1-4% E. &lt; 1% basop
Vsevolod [243]

Answers:

A. 50-70% - neutrophils

B. 20-40% - Lymphocytes

C. 2-8% - monocytes

D. 1-4% - eosinophils

E. < 1% -  basophils

Explanation:

The blood differential test is used to estimate the percentage of each class of white blood cell (WBC) present in the blood and to indicate the presence of abnormal or immature cells.

The Test is Performed by taking of blood sample which is smeared onto a glass slide, then it's stained with a unique dye to indicate the class of white blood cells.

The Five class of white blood cells are

Neutrophils

Lymphocytes (B cells and T cells)

Monocytes

Eosinophils

Basophils

The different class of white blood cells are given as a percentage:

Neutrophils: 40% to 60%

Lymphocytes: 20% to 40%

Monocytes: 2% to 8%

Eosinophils: 1% to 4%

Basophils: 0.5% to 1%

Band (young neutrophil): 0% to 3%

7 0
3 years ago
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