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Eva8 [605]
3 years ago
8

When was mars discovered?

Biology
1 answer:
const2013 [10]3 years ago
4 0
Mars<span> was </span>discovered<span> by visual observation without instruments. The first mention of observations of </span>Mars<span> occurred in ancient Egyptian records dating back thousands of years. In 1610, Galileo Galilei was the first person to observe </span>Mars<span> through a telescope. hope that helped</span>
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In traditional recombinant DNA technology, a desirable gene from one organism is inserted into the DNA of a host organism. Howev
Diano4ka-milaya [45]

Answer:

The correct answer is "In order to create a synthetic life form it would be necessary to know the function of every gene and include them in the organism".

Explanation:

The most common approach of studies using recombinant DNA technology is to insert a desirable gene from one organism into a host organism. This approach is much more feasible that creating a synthetic life form because, in order to create a synthetic life form, it would be necessary to know the function of every gene and include them in the organism. Even though the whole DNA sequence of many organisms is known (including humans), the function of the entire sequences of the genome is yet to be understood.

3 0
3 years ago
Angiotensin II is a potent ____________ that helps regulate blood pressure. Angiotensinogen, is an inactive hormone synthesized
Hatshy [7]

Answer:

Angiotensin II is a potein VASOCONSTRICTOR that helps regulate blood pressure. Angiotensinogen, is an inactive hormone synthesized and released continuously from the LIVER. Its activation, which occurs within the BLOOD, is initiated by the enzyme renin. Renin is released from the juxtaglomerular apparatus of the KIDNEYS in response to either (1) LOW blood pressure (as detected by decreased stretch of BARORECEPTORS within granular cells, or by decreased NaCl detected by CHEMORECEPTORS within macula densa cells); or (2) stimulation by the SYMPATHETIC  division. The sequential action of renin and angiotensin converting enzyme (ACE) causes the formation of angiotensin II (the active form of the hormone).

Explanation:

Angiotensin is a peptide hormones that regulate blood pressure by causing increase in blood pressure through vasoconstriction. It is a part of the renin- angiotensin system that regulate the internal pressure of the blood. It is stimulated when the level of blood pressure reduces or there is an decrease in the sodium chloride in the blood. It effects is to vasoconstrict the blood vessels thereby increasing the blood pressure in the vessels. Angiotensinogen is the inactive hormone synthesized by the liver and upon activation through baroreceptors or chemoreceptors, the liver releases angiotensinogen into the blood stream to be ctivated by the enzyme secreted from the kidney's juxtaglumerular apparatusand then activated to teh angiotensinogen I, angiotensinoI is then activated into angiotensin II by the angiotensin II by the angiotensin converting enzyme. Angiotensin also causes the increase in the aldosterone secretion from the adrenal cortex to promote the retention of sodium by the kidneys, this also helps to increaee the blood pressure. Various receptors helps in signalling the body to a reduced blood pressure level. This includes the baroreceptors which are pressure receptors and detect changes in pressure of the blood; chemorecptors which are chemical receptors that detect the change in the concentration of sodium and chloride ion in the blood. All this function together with the sympathetic division of the CNS to help the body regulates its change in blood pressure in a given time.

3 0
3 years ago
If the DNA (deoxyribonucleic acid) molecules in a single human cell were stretched out and laid end-to-end they would measure ap
Charra [1.4K]
<h2>Genome is the answer</h2>

Explanation:

  • Genome is simply a set of instructions which is made up of DNA
  • An organism's complete set of DNA consists of all of its genes
  • Genome contains all the information that is needed to build and maintain the organism
  • Within DNA contains a unique code which helps in growth and development of an organism
  • The code is determined by the sequence of four nucleotide bases namely adenine,guanine,cytosine and thymine
  • DNA is present in the form of a double helix and its single strand are coiled up to form chromosomes
  • Within the chromosomes sections of DNA are read together in the form of genes
  • The human genome is made up of 3.2 million bases of DNA which itself is unique

5 0
3 years ago
What are some treatments for dyslexia
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Therapies: occupational therapy, IEP, counseling psychology
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3 years ago
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Know what makes a solution acidic or basic (the pH number and the ions).
Brrunno [24]

To determine whether an acidic or basic solution, it is first necessary to compare the concentrations of the hydronium (H3O +) and hydroxide (OH-) ions in the solution.

In acidic solution, the concentration of H3O + ions is higher than that of OH- ions.

  • In acidic solution, the concentration of H3O + ions is higher than that of OH- ions. Such a solution can be achieved by adding a small part of the H3O + ions, for example. Acid solutions have a pH below 7, the further away from 7 the pH of the solution is the higher its acidity content.  According to Le Chatelier's principle, when a disturbance is caused to an equilibrium system, it tends to readjust in order to diminish the effects of that force. This means that if an acid is added to water, the H3O + ions will be in excess and the equilibrium will shift in the opposite direction to the left. Then these excess ions will react with the OH- ions. Thus, the concentration of OH- ions will decrease and the solution will become acidic.
  • In basic solutions, the concentration of OH- ions is higher than that of H3O + ions.  If we add a base to the water, it means that we will be adding OH- ions and, as explained in the previous section, by Le Chatelier's principle, the equilibrium of the water selfionization reaction will shift in the opposite direction, and the excess ions will react. with the H3O + ions, decreasing their concentration and making the basic solution.  Basic solutions have a pH greater than 7, the farther from 7 and closer to 14 the pH of the solution, the higher the basification content.

8 0
3 years ago
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