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3 years ago

How is a scientific law formed?

1 answer:

6 0

A theory which is tested again and again and found to fit the facts and from the valid predictions may be made is then known as scientif ic law or priciples..

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Messenger RNA created through the process of transcription moves from the:

mamaluj [8]

Answer: a

Explanation: transcription takes place in the nucleus. RNA leaves the nucleus to go to the ribosome where translation occurs.

6 0

3 years ago

Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym

AlekseyPX

Explanation:

The plant is utilizing CO2 in photosynthesis

Photosynthesis produces glucose and O2 from inorganic CO2, light energy and water.

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2

Bromothymol blue, an acid indicator, goes from blue to yellow when reacting with acid. The color change in sunlight confirmed the use of CO2, dissolved within the solution as carbonic acid- its removal from the solution makes the more basic, and the solution goes from yellow (acidic) to blue (alkaline).

CO2 + H2O ↔ H2CO3

Further Explanation:

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released.

Occuring in several complex steps, photosynthesis is a rate limited reaction, it depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. Water supplies chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II.

Additionally,

water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions and produces molecules of the energy storage molecule ATP through an electron transport chain.
This occurs in the thykaloids, where pigment molecules like chlorophyll reside.
Later, in dark reactions, NADP and NADPH are used in the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules. These store energy in their bonds, which can be released in respiration in the mitochondria.

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’s cycle via the oxidization of pyruvate( through the process of glycoysis). The electron transport chain, in which oxygen functions as the terminal electron acceptor occurs in both plants and animals.

Learn more about photosynthesis at brainly.com/question/4216541

Learn more about cellular respiration at brainly.com/question/11203046

Learn more about cellular life at brainly.com/question/11259903

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5 0

3 years ago

During sexual reproduction, two gametes merge to create a zygote that is a genetic mix of its two parents. For each statement, i

Elenna [48]

Answer:

1. 50% of the genome comes from each parent because it is crucial otherwise if the ratio changes, the zygote may not form and if formed the fetus may have some other kind of chromosome number related syndromes etc.

2. Sexual reproduction produces greater genetic variability than asexual methods. This is because of the process of crossing over during meiosis that exchange the segments of chromosome that is necessary for producing mutations and genetic variability.

3. 50% of chromosomes match with each parent because both of the parents contributed 23 chromosomes and exactly 50% of their genome.

4. The gametes must be produced by two different individuals cause that is the main purpose of sexual reproduction and give better survival like this to the forming next generation. Not to mention produces greater genetic variability among species.

5. Plants always produces both eggs because they are hermaphroditic in nature.

7 0

3 years ago

Read 2 more answers

How<br> many<br> amino acids do two mRNA codons code for?<br> Please no random awnsers for points

Cloud [144]

2 amino acids; codon = a triplet & 1 codon codes for 1 amino acid therefore if are 2 mRNA codons then you’ll have 2 amino acids

5 0

3 years ago

Annette [7]

Answer:

Accuracy is being able to hit close to or right around the designated area, precision is being able to hit it dead on

6 0

3 years ago