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Licemer1 [7]
3 years ago
5

Which labels belong in the areas marked X and Y?

Biology
2 answers:
Romashka [77]3 years ago
8 0

The answer is 3 because plants absorb and use CO2, sunlight, and water to create glucose and expel leftover oxygen in the form O2.

mojhsa [17]3 years ago
7 0

Answer:

3

Explanation:

The picture is depicting the process of photosynthesis. The equation for photosynthesis is:

6CO_2+6H_2O → C_6H_{12}O_6+6O_2

Here, CO_2 and H_2O are carbon dioxide and water and they're reactants - inputs. C_6H_{12}O_6 and O_2 are glucose and oxygen and they're products - outputs.

In the picture, there's an arrow going into the leaves, so it must be either carbon dioxide or water. Water is already labelled, however, so it must be carbon dioxide. Eliminate 1, 2, and 4. Already, we can see that the answer is probably 3. But let's just check.

There is another arrow coming out of the leaves. This can be either oxygen or glucose. However, it can't be glucose because glucose, which is sugar, is not released into the atmosphere - the plant needs to use it. So, the output arrow is oxygen.

Thus the answer is 3.

Hope this helps!

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2. Our genes encode the instructions that define our traits. Traits are majorly defined by the instructions encoded in the genes. However, environment may influences the traits and may play an important role in shaping the traits we posses. Often times these traits may be changed by the environmental factors.

3. Each of us has thousands of genes, which are made of DNA molecules and reside in our chromosomes. Genes are functional or fundamental units of heredity. They are made up of DNA molecules, and act as instructions to make proteins, through a process of transcription and translation. Transcription involves formation of a messenger RNA which then undergoes translation in the cytoplasm to make proteins.The protein formed determine the traits of an individual.

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6. When parents conceive a child, each parent contributes one set of chromosomes.This enhances the passing of traits or genes to the child. The egg cell or the ovum from the mother and the sperm cell from the father contain the haploid number (n) or one set of chromosome. During conception the two combines/fuse to form a zygote which is now diploid (2n).

7. Every child receives half of its chromosomes from the mother and another half from the father. During meiosis in the gametes for both mother and father a haploid cell is formed with one set of chromosomes (haploid, n). Therefore, each child contains half number of chromosomes from the mother and the other half from the father making up the diploid number (2n).

8. This transfer takes place at conception, when the father's sperm joins the mother's egg. During conception, fertilization takes place and the sperm cell fuses with the mother cell (ovum) forming a single cell called Zygote. The zygote has the two sets of chromosomes (23 +23 = 46). The cells then divide by mitosis leading to the development of a child.

9. While most cells in our bodies have two sets of chromosomes, or a total of 46 chromosomes, egg and sperm each have 23 chromosomes. The body cells (somatic cells) contain two sets of chromosomes (diploid number, 2n) from mitosis, while the gametes have a single set of chromosomes (haploid, n), from meiosis.
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