Question 24 of 30
1 Point
In 1953, Stanley Miller and Harold Urey built a model of Earth's early
atmosphere by mixing gases that were thought to have been there. They
exposed the gases to an electric current to simulate lightning. The liquid that
condensed during the experiment contained amino acids.
What was the significance of their results?
O A. Miller and Urey proved the theory of spontaneous generation.
B. Miller and Urey proved that all life evolved from a single common
ancestor.
C. Miller and Urey proved that lightning was necessary for life to form
on Earth
O
D. Miller and Urey proved that biological molecules could have
formed in a similar way.
​

Answer:

In these experiments the control group is compared with the comparison group.

The control group will sometime be in the presence of carbon dioxide, and will be controlled, where the analyst or researcher will take an expert position and then will compare it evolutionarily with the comparison group that the ideal would be that there is not ever a carbon dioxide

Explanation:

If we have two poison ivy research groups that are representative of the poison ivy that the researchers are looking to investigate the results will have much better credibility and will be more reliable.

On the other hand, the comparison of the two groups makes it possible to rigorously analyze whether or not poison ivy grows in the presence of this gas.

Answer:

noseaa

Explanation:

Answer:

C

Explanation:

Got it right on edge

Answer:

The answer is option D.

Hope this helps.

Answer:

The answer is Introducting traits into ogranisms. or D

Explanation:

Answer:

Hypothalamus is the correct answer to the given question.

Explanation:

Hypothalamus in the brain is the tiny portion of the mind also the Hypothalamus is situated at the foot of the nervous system .The Hypothalamus is just next to the pituitary gland. Hypothalamus is produced by a variety of nucleus as well as the nervous fibers. It's own neuronal links

Answer:

The pituitary gland is the master controller gland.

Explanation:

I just did this: The pituitary gland is sometimes called the "master" gland of the endocrine system because it controls the functions of many of the other endocrine glands.

Answer:

Enzymes are essential for healthy digestion.

Explanation:

There are three types of digestive enzymes depending on the type of food on which they act.

Lipases are those that digest fat. After its breakdown into fatty acids and glycerin, they are synthesized by the pancreas.

Proteases are the ones that break the peptide bonds of proteins, reducing them to organic monomers called amino acids. They originate in the stomach or pancreas.

The so-called amylases break down starches and complex sugars in the diet, by breaking the glucidic bonds, releasing mososaccharides (especially glucose). There are 3 types of amylases: ptyaline, pancreatic amylase, and duodenal amylase.

The benefits of these enzymes are:

- They help digestion and reduce the so-called "acidity".

- They reduce the feeling of bloating and gas.

- Improves the digestion of dairy products.

- Food allergies decrease due to good protein digestion.

- They improve the conditions of hiatus hernia and ulcers.

Answer:

The liver is one of the vital organs of the body, responsible for hundreds of chemical actions that the body needs to survive. It is also a gland because it secretes chemicals that are used by other parts of the body.

Explanation:

Answer: Active Transport

Explanation: Active transport is the movement of a substance (proteins, enzymes, etc.) from one area of the cell membrane to the next during diffusion, so this would most be affected due to the kinds of substances being transported across the cell membrane and damage can have an impact.

Carrier proteins are involved in active transport. The movement of particles that would be most affected by a disorder that causes damage to carrier proteins is active transport. Option C.

Carrier proteins are transmembrane molecules involved in active transport.

They carry molecules from one side of the membrane to the other side.

Active transport acts against the electrochemical gradient, so it does need the energy to transport substances.

It carries molecules from a low concentration side to a high concentration side.

The used energy comes from ATP (Na-K bomb) or the membrane's electric potential.

The movement of particles that would be most affected by a disorder that causes damage to carrier proteins is active transport. Option C.

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Answer:

La respuesta correcta es "a. arterias, b. venas; y c. capilares".

Explanation:

Los vasos sanguíneos son una serie de conductos a través de los cuales el cuerpo transporta la sangre, asegurando que todas las células del cuerpo tenga acceso a oxígeno, elemento necesario para la respiración celular. Hay tres tipos de vasos sanguíneos: arterias, venas y capilares. Las arterias llevan la sangre del corazón a los órganos, las venas transportan la sangre de los órganos al corazón y los capilares son vasos muy pequeñitos que llegan a las partes más pequeñas del cuerpo.

Answer:

The rate of oxygen exchange in the lungs decreases, outstandingly while diving from Boston (near sea level) to summit of Mt. Washington

Explanation:

At near sea level, Boston, where there is sufficient dense air and plentiful supply of oxygen, the rate of breathing and oxygen exchange in the lungs is at normal levels

At the height of 6,288.2 feet, which is the height of the summit of Mt Washington, the lung does more work to extract the oxygen from the air present which is less dense and contains less oxygen than the air at sea level such that a larger volume of air is required to supply the amount of oxygen the body requires

Therefore, the rate of oxygen exchange in the lungs decreases, outstandingly while diving from Boston (near sea level) to summit of Mt. Washington.

Answer:

Differences between metals and non-metals

Explanation:

Metals are elements that have luster.

Non-metals are elements that do not have luster. They are dull.

There are one to three electrons in the outer shell of the metals.

There are four to eight electrons in the outer shell of the non-metals.

Metals are a good conductor of heat and electricity.

Non-metals are the bad conductors of heat and electricity.

Metals are malleable, ductile, and sonorous.

Non-metals are brittle, non-ductile, and non-sonorous.

Answer:

it has the ability to turn off genes

The correct answer is the cell.

Since Arachnoidiscus ehrenbergi is a single cell organism the only level its of organization is cell. Human stomach is composed of many different types of cells which combine together in order to perform complex functions. Those cells are arranged in tissues which make an organ-stomach.

hope it helps!

The level of organization displayed by both Arachnoidiscus ehrenbergi and the human stomach would be the cell.

Since it has already been established that Arachnoidiscus ehrenbergi is a single-celled organism, it can only exhibit a cellular level of organization.

The human stomach, in a similar vein, is made up of different cells. One group of such cells are secretory epithelial cells. They include the mucous cells, parietal cells, chief cells, and so on.

Thus, Arachnoidiscus ehrenbergi and the human stomach have the capacity to exhibit a cellular level of organization.

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Answer:

it has a DNA chromosome coz the dna molecule is packaged in to thread like structures called chromosomes..each chromosome is made up of dna tightly coiled many times around proteins called histons dat support its stracture

Answer:

The answer is C

Explanation:

just took the test and it was right:)

Answer:

C. Deep-sea producers have adapted mechanisms to conduct photosynthesis with less visible light.

Explanation:

Since they are deep in the sea, they have adaptive mechanisms to conduct photosynthesis with less visible light.

Hope it helps.

Answer:

The diagram shows one step in the process of protein synthesis.

A D N A strand. The R N A polymerase encircles a portion of the D N A strand, pulling it apart.

The process shown in the diagram is called  

⇒ transcription.**

Explanation:

Answer:

True

Explanation:

Aristotle initially thought that life arose spontaneously and he backed this up by showing that a lump of meat left uncovered in a glass jar spontaneously produced maggots.

The spontaneous generation theory was later disproved by another scientist, Francesco Redi. He showed that a covered jar containing a lump of meat will not spontaneously produce maggots unless flies are allowed to perch and lay their eggs on the meat. The eggs of the flies give rise to the maggots and not the meat.

It thus showed that new life does not arise spontaneously but rather through development and reproduction.

Answer:

Isotopes are atoms of the same element that contain an identical number of protons, but a different number of neutrons.

Explanation:

hope it helps

Answer: including all the different alleles that are present in a population

Explanation:

Answer:

B. Ca

Explanation:

Not rlly anything to explain here

Answer:

The answer is B (Ca)

Explanation:

According to the table of elements

Answer:

We can't examin the specimen in tbe absence of lght. We can not study the internal structures.

Explanation:

Answer:

Light microscopes do not magnify at the same level as other options.

The typical light microscope cannot magnify as closely as an electron microscope when looking at some of the world’s smallest structures. Most models are capped at 2,000 times or thereabouts, with some entry-level models offering significantly less to the user. Because the relatively long wavelength of light decreases the ability of the equipment to magnify in the small focus lens, you may not always see everything that is going on with a slide when choosing this option.

Answer:

Cellular respiration

Explanation:

Cellular respiration involves the breakdown of glucose using oxygen to produce energy, or ATP, that is used by the cell.

The breakdown of glucose in the presence of oxygen is called as cellular respiration.

Cellular respiration is the process by which biological fuels are oxidized in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy, to drive the bulk production of ATP.

Moreover, it is the process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions, which may be used as energy to power many reactions throughout the body. There are three main steps of cellular respiration: glycolysis, the citric acid cycle, and oxidative phosphorylation.

Hence, it is a series of chemical reactions that break down glucose to produce ATP.

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Answer:

Denmark , Switzerland and Finland

Explanation:

Denmark , Switzerland and Finland are the top three countries in the world having highest standard of living. Standard of living means the availability of basic items, wealth, goods etc to the specific people or region. the people of these above three countries are wealthier, having better financial condition and has a comfort life as compared to people of other countries. The main reason of high standard of living of the people of these countries that these countries are developed whose economy is better than other poor countries.

Answer:

1) Radioactivity, this is an exposure dependent risk of some cancers notably leukaemia.

2) Tobacco smoking, this damages their health.

Explanation:

I hope it helps.

Answer:

P = 0.79.

Explanation:

To solve this, we need to understand the Hardy-Weinburg equation and what each variable is. P is usually used for the dominant trait classification (in this case, it would be long legs) and Q is usually used for the recessive trait classification (in this case, it would be short legs).

Therefore, we know that the values have to add up to 1 and that Q is recessive and P is dominant. So, if we begin applications, we can learn that to equal 1, we must use numbers less than 1 to accomplish this.

If 21 of a 100-person population have short legs, then ideally, 79 people would have long legs (the dominant trait). So, we know that 0.21 as q and 0.79 as p would equal 1 if you just added p and q together. Therefore, we can know that q is 0.21 and p is 0.79.

To prove this, we can insert these values into the equation:

[tex]0.79^{2} + 2(0.79*0.21) + 0.21^{2} =1[/tex]

[tex]0.6241 + 0.3318 + 0.0441 =1[/tex]

[tex]1=1[/tex]

Answer:

C

Explanation

Got it right on edge

Answer:

label A: nucleus label B: ribosomes

Explanation:

trust me.

Answer:

i would go with b

Explanation:

Answer: their diet

Explanation:

Answer:

Their diet

Explanation:

Plato

Answer:

In the plant cell it's found in the chloroplast.

Hope this helps.

Answer/Explanation:

There is no single biomolecule that is most important in one's diet; however, proteins would be a fitting choice. This is because there are certain amino acids -- 9 in fact -- that our bodies cannot naturally produce and of which proteins consist. We need these amino acids to survive because they make up proteins, and proteins perform pretty much every crucial function you can think of, ranging from defense to cell signaling to structure. All biomolecules are important in cell function -- carbs are needed for your cells to burn for energy via cellular respiration (a process that yields app. 28-32 ATPs per cycle), lipids are needed for cell membranes (amongst numerous other needs), proteins are needed for the reasons above, and nucleic acids are needed for RNA and DNA.

A. Welch's, Oreos, Chips Ahoy

B. You should be able to do this.

C. Proves my point in B.

D. Yeah, generally the snacks I chose are not healthy, even Welch's fruit snacks. It's junk food and not high in protein. "You are what you eat" makes sense in the quite literal sense because your body mass, your health, and your overall physical attributes are determined by your diet, on top of exercise and your activities throughout your life.

There is no single biomolecule that is most important in one's diet; however, proteins would be a fitting choice. This is because there are certain amino acids -- 9 in fact -- that our bodies cannot naturally produce and of which proteins consist. We need these amino acids to survive because they make up proteins, and proteins perform pretty much every crucial function you can think of, ranging from defense to cell signaling to structure. All biomolecules are important in cell function -- carbs are needed for your cells to burn for energy via cellular respiration (a process that yields app. 28-32 ATPs per cycle), lipids are needed for cell membranes (amongst numerous other needs), proteins are needed for the reasons above, and nucleic acids are needed for RNA and DNA.

A. Welch's, Oreos, Chips Ahoy

B. You should be able to do this.

C. Proves my point in B.

D. Yeah, generally the snacks I chose are not healthy, even Welch's fruit snacks. It's junk food and not high in protein. "You are what you eat" makes sense in the quite literal sense because your body mass, your health, and your overall physical attributes are determined by your diet, on top of exercise and your activities throughout your life.

Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites, and natural products. A more general name for this class of material is biological materials.

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