In 1953, Miller and Urey constructed an experiment that attempted to mimic the conditions leading to the formation of biomolecules on early Earth.Part A: Construct a hypothesis statement that Miller and Urey might have made prior to conducting their experiment. Use an “if, then” format to write your statement. (1 point)

Part B: Describe in detail their experiment. Include what they used to simulate the conditions of early Earth, and what their results were. (3 points)

Answers

Answer 1

Answer:

Answer:

A// If early conditions of primeval earth had ammonia, methane, hydrogen in its atmosphere, then it is possible that amino acids such as glycine, α-alanine, and β-alanine may have been spontaneously formed from chemical reactions spurred by energy from lightning.

Their hypothesis was that the early conditions of primeval earth favored the spontaneous formation of organic molecules, from inorganic precursors, that may have been the origin of life. This theory is called abiogenesis.

B//Miller Urey put methane, ammonia, hydrogen gases in a glass flask and a pool of water at the bottom of the glass flask. The flask was heated moderately to simulate the hot conditions then. Sparks were also occasionally induced in the flask to mimic lighting. The flask was then cooled slowly to simulate cooling of earth over time.After one day, they found the presence of some amino acids (glycine, α-alanine and β-alanine) was discovered in the water in the flask

Explanation:

Answer 2

Answer:

Answer:

part a:If early conditions of primeval earth had ammonia, methane, hydrogen in its atmosphere, then it is possible that amino acids such as glycine, α-alanine, and β-alanine may have been spontaneously formed from chemical reactions spurred by energy from lightning.

part b:Miller Urey put methane, ammonia, hydrogen gases in a glass flask and a pool of water at the bottom of the glass flask. The flask was heated moderately to simulate the hot conditions then. Sparks were also occasionally induced in the flask to mimic lighting. The flask was then cooled slowly to simulate cooling of earth over time.After one day, they found the presence of some amino acids (glycine, α-alanine and β-alanine) was discovered in the water in the flask

Explanation:

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Identify three possible components of a dna nucleotide. cytosine, phosphate group, ribose 2-deoxyribose, phosphate group, uracil 2-deoxyribose, phosphate group, thymine guanine, phosphate group, ribose cytidine, phosphate group, ribose adenine, phosphate group, ribose

How is RNA different from DNA

Answers

DNA and RNA have completely different purposes in us. DNA stores and transfers genetic information (Eye and hair colour, skin colour, etc..). RNA codes amino acids and makes proteins. DNA is double stranded while RNA is single stranded. DNA uses adenine, thymine, cytosine, and guanine; while RNA uses adenine, cytosine, uracil, and guanine.

DNA is double stranded and RNA is single stranded.

The following are 1.0 M acid solution, which has the largest concentration of hydronium [H3O+]?A. HNO2

B. H2CO3

C. H2SO4

D. H3BO3

Answers

H2SO4 has the largest concentration of hydronium [H3O+] because H2SO4 is a strong acid.

Answer: Option (C) is the correct answer.

Explanation:

An acid which is able to dissociate completely into ions in water is known as a strong acid.

For example, $H_(2)SO_(4) \rightleftharpoons 2H^(+) + SO^(2-)_(4)$

Therefore, sulfuric acid is a strong acid as it dissociates completely into ions in water.

Whereas $HNO_(2)$ , $H_(2)CO_(3)$ , and $H_(3)BO_(3)$ are all weak acids as they dissociates slightly in water as follows.

$H_(3)BO_(3) \rightleftharpoons H^(+) + H_(2)BO^(-)_(3)$

$HNO_(2) \rightleftharpoons H^(+) + NO^(-)_(2)$

$H_(2)CO_(3) \rightleftharpoons H^(+) + H_(2)CO^(2-)_(3)$

Morover, sufuric acid upon dissociation is giving 2 hydrogen ions and rest all are giving one hydrogen ion.

Thus, we can conclude that out of the given options $H_(2)SO_(4)$ has the largest concentration of hydronium [H3O+].

The transfer of information from the nucleus to organelles is accomplished by _____. ribosomes RNA DNA endoplasmic reticulum (ER)

Answers

The answer is RNA.

Information from DNA in the nucleus is transcribed to messenger RNA (mRNA). After being processed in the nucleus, mRNA is exported to the cytoplasm. It is named messenger because it serves as a messenger and, so, it transfers information.

SOS:

The answer is ribonucleic acid (RNA)!!

Hope this helps!!

The right ventricle transports oxygenated blood to the lungs true or false

Answers

I believe the correct answer is FALSE.

Explanation:

The heart is an organ located at the center of the chest in the thoracic cavity and functions to supply blood to and from tissues giving the tissues oxygen and nutrients while taking away carbon dioxide and waste products. It is divided into 4 chambers and 2 chambers are separated by a muscular wall that prevents mixing of the blood.

Further Explanation:

Blood enters the heart via the vena cava which is divided into the superior vena cava that recieves blood from the upper region of the body that includes the head, neck and chest while the inferior vena cava recieves blood from the lower extremeties that includes the legs, the abdomen, the pelvic region and the thighs. The blood is deposited into the right atrium and is de-oxygenated. When it is deposited into the right atrium, the change in volume of the atrium and the expansion causes the valve to open and allow the de-oxygenated blood to flow into the right ventricle. The right ventricle then pumps the blood that is de-oxygenated to the lungs via the pulmonary artery which is the only artery that pumps de-oxygenated blood. In the lungs, carbon dioxide is removed and oxygen added to the blood and is taken to the left atrium which pumps the oxygenated blood to the left ventricle and then the left ventricle pumps the oxygenated blood to the rest of the body. The blood is then again taken through the body via the capillaries and the veins pick up the blood that has been removed of oxygen and added with carbon dioxide and transport the blood back to the heart via the vena cava. It enters the right atrium via both the inferior and superior vena cava and the de-oxygenated blood is circulated again to the lungs for oxygenation from the left ventricle.

Learn More:

Learn More about types of circulation: brainly.com/question/1615925

Learn more about the heart: brainly.com/question/12945500

Learn more about the circulatory system: brainly.com/question/919984

Level: High School

Subject: Biology

Topic: The Circulatory System

The statement “the right ventricle transports oxygenated blood to lungs” is false.

Further Explanation:

Heart of humans have four chamber namely right and left atrium also, right and left ventricle. The main purpose of heart is to pump blood throughout the body. Due to this constant beating of heart a pressure is maintained in the body which helps in the flow of the blood.

The heart receives the deoxygenated blood from the body parts. This blood reaches the right atrium by means of superior and inferior vena cava. The blood from right atrium is pushed to the right ventricle. So, the right ventricle always has deoxygenated blood. This blood is then pushed to the lungs by the means of pulmonary artery into the lungs.

This blood then gets oxygenated by the means of fusion through capillaries and returns back to the heart specifically, to the left side. This blood is then pumped to the organ systems where it provides the tissues with oxygen.

Important note-

a. The right side of the heart always has deoxygenated blood.

b. The left side of the heart has oxygenated blood.

Therefore, the statement that the right ventricle of the heart has oxygenated blood is not true.

Learn More-

1. Learn more about primary succession brainly.com/question/1386621

2. Learn more about energy storage brainly.com/question/523624

3. Learn more about transfer RNA brainly.com/question/236807

Answer Details:

Grade: Middle School

Subject: Biology

Chapter: Human Physiology

Keywords:

Heart, ventricle, atrium, right atrium, left atrium, right ventricle, left ventricle, oxygenated blood, deoxygenated blood, pulmonary artery, SA node, lungs, oxygenation of blood.

Which nucleic acid base is found in RNA but NOT in DNA?

Answers

Answer: It's uracil!

Explanation: The four nirogen bases in DNA are adenine, guanine, thymine, and cystosine. In RNA, thymine is simply replaced with uracil.

One-celled organisms, such as bacteria, can reproduce very quickly using the process called _____. budding binary fission cytokinesis duplication

Answers

The correct answer is binary fission.

It is the process by which prokaryotic cells produce new cells that are genetically similar to the parent cell. It is an asexual kind of reproduction.

it occurs in three main steps

1. DNA replication to make a set of two chromosomes.

2. Chromosome segregation where the two chromosomes separate.

3. Cytokinesis, a process in which a new plasma membrane begins to form in the center of the cell followed by the splitting of the cytoplasm into two, and two daughter cells are formed which are genetically similar to each other and to the parent cell.

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During a hurricane, salt water invades fresh water marshes causing many of the plants to die and ultimately the loss of soil. The plants are killed because the salt-water solution is ________ to the plants drawing water from the plant cells. A. Oligotonic B. Hypertonic C. Mesotonic D. Isotonic E. Hypotonic