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4 years ago

At approximately what age should a child be able to use each hand independently?

1 answer:

5 0

I think at Approximately 7 years the child should be able to use each hand independently. Hand control is the ability by a child to accurately use and manipulate objects, utensils, tools and even finger in isolation for functional tsak performance.

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_____ splits water into 1/2 O2, H , and e- . A structure of a thylakoid. Letters from A to E indicate definite structures. Lette

Sauron [17]

The luminous reactions begin when light reaches photosystem II. The water molecules provide electrons to the photosystem, releasing oxygen and protons. The letter A represents photosystem II that splits water.

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1. Luminous energy is trapped by chlorophyll in Photosystem II.

2. When the pigment molecules absorb light, electrons provided by water molecules get in a higher energy level.

3. The excited electrons go through the electron transport chain from Photosystem II to a less energetic level in photosystem I.

4. When the excited electrons leave photosystem II, they are replaced by new electrons extracted from the water molecules.

5. Luminous energy absorbed move the electrons from the photosystem I to another electron acceptor, from where they get transported again and used to produce NADPH molecules.

6. When electrons leave Photosystem I, they are replaced by new electrons coming from photosystem II.

7. When the water molecule breaks down, hydrogen ions remain in the thylakoid lumen, from where they are pumped to the stroma by the ATP synthase.

8. The released energy is used to produce ATP molecules.

9. Hydrogen ions go back from the stroma to the thylakoid compartment.

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6 0

3 years ago

Which of the traits were likely present in the last common ancestor of bryophytes? Please choose the correct answer from the fol

insens350 [35]

Answer:

a. multicellular sporophytes

Explanation:

Bryophytes include all the land plants. Evolutionary studies have shown that all the bryophytes might have originated from a common green algae. A sporophyte can be described as a diploid multicellular stage which is common in all plants and algae. Hence, we can infer that the multicellular sporophyte generation was common in all bryophytes and hence can be seen even today.

7 0

3 years ago

What are the processes that produce protein from DNA?

jonny [76]

Answer:

Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus.

5 0

4 years ago

Read 2 more answers

What property identifies minerals as metallic or nonmetallic?

Veseljchak [2.6K]

Luster

density

streak

hardness

just took the test

3 0

3 years ago

Read 2 more answers

3)What is the epiglottis?

lana [24]

Answer:

3)The epiglottis is a small, movable "lid" just above the larynx that prevents food and drink from entering your windpipe. But if the epiglottis becomes swollen — either from infection or from injury — the airway narrows and may become completely blocked.

4)Your stomach lining also secretes hydrochloric acid, which creates the ideal conditions for the protein-digesting enzymes to work. The potent hydrochloric acid kills bacteria, protecting your body from harmful microbes which can enter your body in food.

5)Made up of three segments -- the duodenum, jejunum, and ileum -- the small intestine is a 22-foot long muscular tube that breaks down food using enzymes released by the pancreas and bile from the liver.

Explanation:

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6 0

4 years ago