What was simulated in the Miller-Urey experiment?
a. volcanic eruptions
b. lightning bolts
c. high winds
d. tidal waves

Answers

Answer 1

Explanation:

c. high winds. is the answer

Answer 2

Answer:

b. lightning bolts

Explanation:


Related Questions

The table above shows the nutritional information in a bottle of pop. Drinking 16 oz of this beverage would provide which of the following?
A.
30% of the total carbohydrates for a person on a 1,000 calorie diet

B.
15% of the total carbohydrates for a person on a 2,000 calorie diet

C.
15% of the total carbohydrates for a person on a 1,000 diet

D.
30% of the total carbohydrates for a person on a 2,000 calorie diet

Answers

Answer:

30% of the total carbohydrates for a person on a 2,000 calorie diet

Explanation:

Study Island

30% of the total carbohydrates for a person on a 2,000 calorie diet will provide if drinking 16 oz of this beverage.

How is 30% 15% in the given table?

The table is based on 2000 calories, and one serving is 8 oz.

Thus the question is for two servings.

Which equals 30% carb of a 2k calorie diet.

What are carbohydrates?Carbohydrates are macronutrients that provide energy to our bodies in three ways.Carbohydrate-containing foods are converted into glucose or blood sugar by the digestive system during the digestion process.

Thus, we can conclude that option D is the correct option, 30% of the total carbohydrates for a person on a 2,000 calorie diet.

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What’s the best course of action for the person shown below?
A. Start sweating
B. Start exercising
C.drink water
D.remove jacket

Answers

Answer:

c

Expclanation:

PLEASE HELP QUICK!!!

What does mRNA do?

A. Carries copies of instructions to make proteins from the DNA to the rest of the cell

B. Creates proteins on the
ribosome

C. Transfers amino acids to the ribosome during protein synthesis

D. Carries amino acids to the growing polypeptide chain on the ribosome

Answers

A. mRNA carries copies of instruction to make proteins from the DNA to the rest of the cell.

mRNA is transcribed from DNA, then translated by the ribosomes into a polypeptide chain (protein)

In a good experimental design, the part of the experiment that is intentionally changed is the
A dependent variable.
B independent variable.
C constant
D control

Answers

Constants never change.

Controls typically don't change or they are done by standard means

(like in an experiment where you water plants with sodas, the plant you use water with is the control)

Dependent variables are the outcome of the experiment. This is the result of changing something.

Independent variables are what you are testing. A independent variable is something that is  intentionally altered.

easy way to remember it is that dependent variables depend on what other variables are. so you cant change a dependent variable, but you can change the other variables.

3. The human body has devised an excellent method to keep the body pH under control. a. What principle underlies the constant pH of human blood, and how does the blood achieve this

Answers


The normal blood pH for adult humans is 7.40, and this pH value is vigorously defended at normal body temperature

Acid base Homeostasis is the method by which body keeps a constant ph
pH is kept under check via different systems
1. Chemical system :bicarbonate buffer system(explained below )
Respiratory component :
2. Respiratory Component: The second line of dense is rapid consisting of the control the carbonic acid concentration in the ECF by changing the rate and depth of breathing by hyperventilation or hypoventilation. This blows off or retains carbon dioxide (and thus carbonic acid) in the blood plasma as required

3.Metabolic component : third line of defense is slow, best measured by the base excess,eand mostly depends on the renal system which can add or remove bicarbonate ions to or from the ECF.Bicarbonate ions are derived from metabolic carbon dioxide which is enzymatically converted to carbonic acid in the renal tubular cells.There, carbonic acid spontaneously dissociates into hydrogen ions and bicarbonate ions.When the pH in the ECF falls, hydrogen ions are excreted into urine, while bicarbonate ions are secreted into blood plasma, causing the plasma pH to rise.The converse happens if the pH in the ECF tends to rise: bicarbonate ions are then excreted into the urine and hydrogen ions into the blood plasma.




Buffers usually consist of a weak acid and its conjugate base; this enables them to readily absorb excess H+ or OH–, keeping the system’s pH within a narrow range.

Maintaining a constant blood pH is critical to a person’s well-being. The buffer that maintains the pH of human blood involves carbonic acid (H2CO3), bicarbonate ion (HCO3–), and carbon dioxide (CO2). When bicarbonate ions combine with free hydrogen ions and become carbonic acid, hydrogen ions are removed, moderating pH changes. Similarly, excess carbonic acid can be converted into carbon dioxide gas and exhaled through the lungs; this prevents too many free hydrogen ions from building up in the blood and dangerously reducing its pH; likewise, if too much OH– is introduced into the system, carbonic acid will combine with it to create bicarbonate, lowering the pH.
Example: Antacids, which combat excess stomach acid, are another example of buffers.


ECF =Extra cellular fluid




Help me please it’s do 10 minutes

Answers

Option B is the correct answer
I think it’s B sorry if I wrong

*
What did Darwin observe about the birds he saw on different continents?
O They were completely different from one another
They all had similar traits and habitats
O They all had very different traits and habitats
They were identical to each other in every way

Answers

Answer:A and B if one choice only then it is B

Explanation:

You transform a population of cells with a transgene and isolate a cell line that has integrated the gene into its genome, but in which the gene is not expressed. Speculate as to what may be preventing the gene from being expressed. Describe two ways to test this possibility.

Answers

Answer:

The transgene could be silenced by: 1- epigenetic mechanisms (e.g., DNA methylation, histone deacetylation, etc.), and 2-the RNA interference (RNAi) pathway

Explanation:

Epigenetics refers to the heritable changes caused by the activation and deactivation of genes without changing the DNA sequence. Epigenetic mechanisms include 1-DNA methylation on cytosine residues, and 2-modifications on amino acids in the tails of histone proteins (e.g., methylation, acetylation, ribosylation, phosphorylation, etc). These two epigenetic mechanisms can modify DNA structure and thus alter the accessibility of transcription factors, thereby suppressing gene/transgene expression. Moreover, the RNA interference pathway (RNAi) is a naturally occurring mechanism capable of suppressing gene/transgene expression both at transcriptional and post-transcriptional levels. The RNAi mechanism is triggered by regulatory non-coding RNAs (ncRNAs) such as, among others, long non-coding RNAs (lncRNAs) and small ncRNAs (e.g., miRNAs, piRNAs, siRNAs, etc). In this case, for example, DNA methylation on promoter sequences could suppress transgene expression, thereby methods to measure DNA methylation can be used to test this possibility (e.g., bisulfite genomic sequencing). Moreover, miRNAs that bind to the messenger RNA of the transgene could also inhibit its expression by triggering the RNAi pathway (e.g., mRNA degradation), thereby methods to measure mRNA levels can be used to test this possibility (e.g., RT-PCR).

Are mules an example of speciation? Why or why not?

Answers

Answer:

Hybrids are the offspring of two species. A mule is the hybrid offspring of a female horse and male donkey. Because mules are sterile, they are not classified as a distinct species. The biological species concept connects the idea of a species to the process of evolution.

g In the mid-1800s, overhunting of Northern Elephant Seals reduced their population size to fewer than 40 individuals. However, the population has since rebounded to over 100,000 animals. The population went through a _________, which makes it more susceptible to ___________.

Answers

Answer:

In the mid-1800s, over-hunting of Northern Elephant Seals reduced their population size to fewer than 40 individuals. However, the population has since rebounded to over 100,000 animals. The population went through a _bottle neck event (genetic drift)_, which makes it more susceptible to _developing a genetic disease_.

Explanation:

Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time. Eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure-bottleneck effect- or because of a population split -founder effect- . The bottleneck effect most likely affects smaller populations.  

In the exposed example, extensive hunting acted as a pressure that reduced the number of Northern elephant seals to fewer than 100. This population experienced one or many generations of small size since these animals were affected by hunting. As the survivors did not have the whole genetic pool of the original population, the population size might have recovered to a current population size of 100,000 individuals, but the genetic pool might have not. When the small population increases in size, it will have a genetically different composition from the original one. In these situations, there is a reduced genetic variability, with a possibility of developing a peculiar allelic component. If the survivors in the population carried or developed a mutation, probably this mutation passed from generation to generation. It will involve more individuals each time and increase the probability of developing a genetic disease.

 

Living things_______in response to changer in there environment. 1.evolve. 2.fossils. 3.extinct. 4.species. Can some tell me which one it is?

Answers

The answer is evolve

which type of fingerprint is shown below? (attachment)

Answers

Explanation:

this is whorl fingerprint

mechanics is that branch of physics and mathematics that...​

Answers

Answer:

The correct answer is - deals with the motion of an object without or with the reference of force.

Explanation:

The mechanism is the branch of sciences that deals with an object in a motion under the reference force or the object that remains at rest. This branch of physics leads to topics of gravitational force, electricity, quant, or magnetism according to the nature of the forces involved.

Modeling, aerodynamics, and all other applications of mechanics required the use of laws of newton, the formula of mathematics, and algebra.

What did Gregor Mendel do to study different characteristics in his genetics experiments?

Answers

Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.

4. Which of the following are common to all of the
chemical cycles? Select all correct answers.
a. reservoirs and processes
b.an atmospheric component
c. photosynthesis and respiration
d. living things as a reservoir
e. the sun as a source of energy
f.can be affected by human activities

Answers

d. living things as a reservoir


d.  living things as a reservoir

e. the sun as a source of energy

f. can be affected by human activities

Common elements to all of the chemical cycles

Living things as a reservoir, the sun as a source of energy and human activities are the common elements present to all of the chemical cycles. These factors causes direct impact on the chemical cycle so we can conclude that option d, e and f are the correct statements.

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(Psychology)
An adult vervent monkey sees a Jaguar approaching. He cries out loudly, warning all the other vervent monkeys in the area of danger.

Why is this behavior considered altruistic?
A) The monkey will gain social praise for its behavior.
B) The monkey is putting itself at risk for other individuals.
C) The monkey understands that the Jaguar is not a threat.
D) The monkey does not believe others can help spread a warning.

Answers

Answer:

The monkey is putting itself at risk for other individuals.

Explanation:

The behavior of the monkey is altruistic because the monkey is putting itself at risk for the safety other individuals.

What is an altruistic behavior?

An altruistic behavior is one in which the individual put a the benefits of others above his own benefit.

An altruistuc behavior is an example of selflessness.

The monkey is exhibiting altruistic behavior by putting itself in danger in order to warn others about the jaguar.

Therefore, the behavior of the monkey is altruistic because the monkey is putting itself at risk for other individuals.

Learn more about altruistic behavior at: https://brainly.com/question/11287458

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What's one nonmedical way that a society can slow down the spread of influenza?
antibiotics
quarantines
vaccines
antivirals

Answers

Quarantines. All other options are medical ways.

Answer:

C

Explanation:

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, and a head; has no body cavity or segmentation; and has bilateral symmetry. To what phylum does this animal belong

Answers

Answer:

Platyhelminthes

Explanation:

Platyhelminthes (phylum Platyhelminthes), also known as flatworms, are bilaterian, unsegmented and soft-bodied invertebrates. Platyhelminthes are hermaphroditic organisms with internal fertilization. In addition, this group shows a series of characteristics including 1-a ladder-like nervous system, 2-presence of parenchyma in the body cavity, and 3-flame cells, i.e., specialized excretory cells that function like a kidney. Platyhelminthes can be divided into three groups: Turbellaria (generally found in freshwater), Trematoda (generally parasitic), and Cercomeromorpha (exclusively parasitic).

EASY! Please I need help, I will give brainliest.

Answers

The answer is c have a nice day!

PLZ help I need the answer today!!!

Answers

Answer:

I think it's because the electricity from the battery goes through one light bulb and into the other and back to the battery since there is only one circuit and when one of the light bulbs burn out it stops the circulation of electricity causing the other one not to work too?

My laptop charger is dead and my phone charger is dead and my laptop is in my car charger I don’t really want my phone number I don’t know how to answer my phone

What the answer there are no options

Answers

The Orbits in the diagram are not supposed to be circle, instead in real life they are in oval shapes.

que tipo de raices? es el cesped
zanahoria
papa
habichuela
helechos
remolocha
clasificar en raises fibrosa o primaria por favor lo necesito lo ante posible para subir la calificacion de la clase sin enlance por favor gracias

Answers

Answer: papa or remolocha

Question on the image below! Help please

Answers

1. Aa 2.aa 3. Aa 4. aa

what is glycogen? links will be reported and pls answer in simple words ​

Answers

Answer:

blood glucose

Explanation:

Help please.

Potatoes are specialized stems called tubers. Potato tubers have two functions. (1) These thick terms are used to store food. (2) The eyes on the stems, seen here, are used to


A) absorb water.

B) grow new plants.

C) make more sugar.

D) collect oxygen for respiration.​

Answers

Answer:

B, grow new plants

Explanation:

They are not actual eyes, new potatoes grow out from the potato "eyes".

In one page compare and contrast the processes of aerobic and anaerobic respiration.​

Answers

Aerobic respiration: takes place in the presence of oxygen.
Anaerobic respiration: takes place in the absence of oxygen.

- Carbon dioxide and water are the end products of aerobic respiration.
-Alcohol is the end product of anaerobic respiration.
- Aerobic respiration releases more energy than anaerobic respiration.

g Electron flow down the electron-transport chain leads to the transport of proteins: Group of answer choices from the matrix to the intermembrane space NONE OF THESE from the intermembrane space to the matrix from inside the mitochondria to the outside from outside the mitochondria to the inside

Answers

Answer:

from the intermembrane space to the matrix

Explanation:

In the electron transport chain (ETC), electrons flow from one protein complex to another. However, as this electrons are transfered, protons (H+) is built up from the intermembrane space of the mitochondria to the mitochondrial matrix.

Hence, according to this question, a proton gradient is formed when hydrogen ions (H+) are moving from the intermembrane space to the matrix of the mitochondrial.

describe the roles of membranes in an amoeba?​

Answers

Answer: cell membrane - the thin layer of protein and fat that surrounds the amoeba; it allows some substances to pass into the cell, and blocks other substances.

Explanation:

Answer:

The plasma membrane of a cell is a network of lipids and proteins that forms the boundary between a cell's contents and the outside of the cell.

Explanation:

The student's results are shown in Fig. 5.2.
ASSIGNMENT - 2021
100
90
80
70
60
time for colour
change
50
7 minutes
40
30
20
10
0+
0
20
40
60
80
100
120
distance from lamp /cm
Fig. 5.2
Describe and explain how the rate of photosynthesis is affected by light intensity​

Answers

Answer:

it is changed because the more light that a plant revives is the more energy they have

HELP ME PLZZZZZZZZZZZZ Clark decides to measure the volume of a rock he found outside. He fills a graduated cylinder with water to 30mL. Places the rock into the water and the water level rises to 37mL. What is the volume of the rock?

Answers

Answer:

The correct answer is - 7 cc or ml.

Explanation:

Given:

The volume of water in a graduated cylinder = 30 mL

The volume of rock = ?

Final volume = 37 ml

Formula:

If an object is placed in water, then the amount of water that is displaced or increased by submerging the object is equal to the volume of the object.

Vi + Vo = Vf

Vi = initial volume

Vo = volume of object

Vf = final volume

Solution:

Placing the values in formula -

30 + Vo = 37

Vo = 37 - 30

Vo = 7 ml or cc.

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A capacitor has plates of area 5.25 * 10 ^ - 5 * m ^ 2 which are separated by 3.14 * 10 ^ - 6 * m . What is its capacitance? Find the vertex of the quadratic function. x-36=f(x) Tsunamis are very long waves in the ocean, sometimes hundreds of miles long. They usually start suddenly as normal waves. Then they change to big waves very quickly. Once this change occurs, tsunami waves travel at great speed. They move across the ocean with little energy loss. Right before they hit land, the water will draw back from the coast. The water may pull back for many hundreds of feet. People who are unaware of the danger may be drawn by this strange site. Then the tsunami will hits. Tsunami's can remove sand from beaches, tear trees from the ground, and destroy whole towns. Tsunamis can be tremendously powerful.Problem and SolutionOrder of ImportanceCompare and ContrastChronological OrderSequence / Process Writing Let h = 3 What is the value of (27 = h)5? Read the sentence.The tectonic plates slammed into each other, pushing one on top of the other and creating a ridge.Which word has the strongest connotative meaning?platesridgetopslammed what is 5au + 24av - 5bu - 30bv pls someone actually translate this story to EnglishI'm giving brainlist to the correct answer A bag contains 5 green marbles, 7 yellow marbles, 4 blue marbles, 6 pink marbles, and 3 purple marbles. If two marbles are chosen without replacement, find the probability of choosing a yellow marble, then another yellow marble. Give your answer as a fraction in simplest form. Why did China's population fall below the replacement level of 2 childrenper family? 1. limited land area2. More Developed3. One Child Policy List 3 examples of mixture and state why its a mixture. Help me. solve the given inequality 11x-20 ...Find the missing exponent. \frac{5^{11}}{5^{?}}=5^{4} 5 ?5 11 =5 4 Exponent only in the answer box A group of students are surveyed about which movie they prefer.movie a :14movie b : 9movie c : 5movie d : 3 What is the probability that a student prefers Movie A? how does mulching conserve soil water Write a story about riding a roller coaster using full alliteration. Every word in each sentence has to start with the same letter. You may use a different letter for each sentence if youd like--OR you can use the same letter all the way through. Can you do at least six sentences? See what you can do! Solve for c.a(c+b) = d The solutions to the system is Read this excerpt from "Rikki-Tikki-Tavi."Teddy shouted to the house: "Oh, look here! Our mongoose is killing a snake; and Rikki-tikki heard a scream from Teddy's mother. His father ran out with a stick, but by the time he came up, Karait had lunged out once too far, and Rikki-tikki had sprung, jumped on the snake's back, dropped his head far between his fore-legs, bitten as high up the back as he could get hold, and rolled away. That bite paralysed Karait, and Rikki-tikki was just going to eat him up from the tail, after the custom of his family at dinner, when he remembered that a full meal makes a slow mongoose, and if he wanted all his strength and quickness ready, he must keep himself thin.Who is the protagonist in this excerpt?A. Karait, because he causes the dangerB. Teddy, because he is the one in troubleC. Rikki-tikki, because he solves the problemD. Teddys father, because he tries to protect Teddy Aliyah had $54 to spend on 5 bracelets. After buying them she had $4. How much did each bracelet cost? Each bracelet costs Question Blank type your answer... dollars. ESSAY IM BEGGING: a friend of yours that lives far is writing to you that hes thinking of leaving school. Write an answer to him explaining the reasons why he should continue it. I will put brainliest