The first organisms on Earth were most likely today's:
a.eukaryotes
b.DNA molecules
c.bacteria
d.multicellular organisms

Answers

Answer 1
I think its answer c . Bacteria

Related Questions

The process of combining the parts of a lipid together is called:

Answers

Answer: esterification

Explanation:

i looked it up in my textbook

The final paragraph of the CNN report said that "several eye specialists" had pointed out that the study should have accounted for heredity. Myopia is passed down from parents to children. Myopic parents are more likely to have myopic children, and may also be more likely to leave lights on habitually (since the parents have poor vision). In what way does the knowledge of this possible genetic link affect how we interpret the data from the study? Explain.

Answers

Answer:

Myopia is a phenotype that results from interactions between genetic factors and the environment

Explanation:

A quantitative trait is a polygenic trait that depends on the cumulative effects of many genes and the environment. Some examples of quantitative traits include weight and height. Myopia is a quantitative trait whose phenotype depends on the combined action of different genes and the environment. It has been shown that genetics plays a central role in this trait (myopia), it is for that reason that myopic parents are more likely to have myopic children. However, there also are environmental factors (e.g., diet) which increase the risk to suffer myopia.

the diagram shows a bacterium. Which labels best complete the diagram

Answers

Answer:

X - Flagellum, Y - Bacterial DNA, Z - Cytoplasm

Explanation:

A bacterium is a living thing that are majorly known for causing diseases but are important for human life.

A bacterium is also consist of several organelles such as cell wall, cytoplasm, flagellum,  bacterial DNA, cytoplasm, ribosomes and others.

The diagram shows three main organelles that are X - Flagellum, Y - Bacterial DNA, Z - Cytoplasm. Flagella functions for the locomotion of the bacteria, bacterial DNA is a genetic material of the bacteria, and cytoplasm is a gel-like matrix composed of enzymes, water, nutrients and other waste material.

Hence, the correct answer is "X - Flagellum, Y - Bacterial DNA, Z - Cytoplasm".

Through which of the following processes are plant communities taking over the ecosystem

Answers

Answer:

Climate disturbance

Explanation:

is Professional athletic ability inherited or acquired?

O Inherited
O Acquired​

2. is color blindness inherited or acquired
A. inherited
B. Acquired

Answers

Answer:

1. Professional athletic ability is acquired

2. A

Explanation:

1. You would need to work to get to be athletic and that is not inherited

2. There is a certified gene that causes colorblindness in humans

the stem is responsible for providing support to the plant. A _______ is a type of stem that grows underground. it is capibile of asexual reproduction and _______ food.

the options for the first blank is bract, rhizome, and runner.

the options for the second one are storing, producing, and transporting ​

Answers

Answer:

I think rhizome and producing is a answer.I am sure for first one but not for second

Answer:

the first blank is rhizome. the second is storing.

!!!!PLEASE HELP ASAP!!!!
Three cells that each has a diploid number of 32 go through meiosis. How
many cells result and how many total chromosomes are in each cell?

Answers

A. Twelve cells with 16 chromosomes each

Identify the relationship described below:

Killer whales, also known as orcas, hunt and eat numerous other organisms — more than 140 species. However, orcas themselves are not hunted by any other organism. In other words, they are at the top of the food chain.

Group of answer choices

Mutualism

Parasitism

Commensalism

Competition

Predator-Prey

Answers

hi :)

The relationship described is predator-prey.

The orca is hunting and eating other organisms, which is known as a predator-prey relationship.

In case you need help with any more of these-

Mutualism is when both animals get something out of the relationship, for example, some kinds of shrimp get the food out of fishes teeth. The fish gets clean teeth, and the shrimp gets a meal.

Parasitism is fairly self-explanatory. This is when a parasite lives and gains from a host, while the host is harmed and could get diseases from the parasite.

Commensalism is when one animal benefits and the other isnt harmed nor benefited. An example of this is the remora fish which clings to the bottom of other fish when it gets tired.

Lastly, Competition. This is when two organisms compete for something they need to survive. For example, two lions could compete for a food source, such as a zebra. Usually, the strongest and fastest organism survives, or wins.

Alrighty, I hope this helped!!

Good luck with the rest of your assignment!!

Which of the following changes in an ecosystem is most likely to result in a
species moving toward one of the poles?
A. An increase in its predator numbers
B. Climate cooling
O C. The intrusion of an invasive species
O D. Climate warming

Answers

Answer:

Climate warming

Explanation:

Answer:

The answer is D-Climate Warming

Explanation:

Once an area gets to a point of extreme warmth where the species genuinely can't handle it anymore, they'll migrate closer to the poles.

If female ants can reproduce why do they need a Queen?

Answers

Answer:

Queen ants have two main responsibilities first, Queens are the founders of all ants colonies. A queen and will leave the colony she was born into a mate with flying male ants. After mating, she will scurry off to find a new location for her nest, lose her wings and lay her first hatch of eggs.

why does the gummy bear grow when soaked in sugar water?

Answers

Answer:

Salt or sugar ions in water are much smaller than the gelatin molecules in the candy. ... Because of osmosis, water molecules move to an area with more solute in it to balance things. The catch is that the water is locked up in the candy and can't move. The Gummi Bear can't shrink further, so it stays about the same size.

Explanation:

i hope it's help

Gummy bear grow when soaked in sugar water because of osmosis, water molecules move to an area with more solute in it to balance things.

What do you mean by osmosis?

Osmosis is the movement of solute molecules from lower concentration to a higher concentration of solution through a semipermeable membrane.

During osmosis, the solvent moves from the solution that is lower in solute concentration to the solution that is higher in solute concentration.

Osmosis helps in stabilizing the internal environment of the organism by balancing the levels of water and intracellular fluids. The nutrients and minerals enter the cell by osmosis which is necessary for the survival of cells.

Learn more about osmosis:

https://brainly.com/question/1799974

#SPJ2


Methane is a molecule that has four hydrogens covalently bonded to one carbon atom and is the major component in

Answers

Answer:

hydrocarbons

Explanation:

Mutations result in changes to genotype that can result in changes in phenotype. Explain how a mutation causes a change in the genotype of an organism AND may result in a change in the phenotype of an organism.

Answers

Answer:

A mutation can alter the structure/function of a particular protein, thereby also altering the phenotype resulting from this new variant

Explanation:

A mutation can be defined as a genetic change in the genome of an organism. Some mutations are capable of modifying the expression and/or structure of the proteins, while other mutations (known as silent mutations) have no effect on the resulting proteins. When mutations occur within the gene region encoding a protein (i.e., exons), they are potentially capable of producing a faulty protein. For example, a mutation can alter the Open Reading Frame (ORF) of the resulting protein, thereby inactivating it. The mutations that alter the structure and/or function of the protein can also alter the resulting phenotype associated with the expression of this protein. For example, a mutation within a gene that encodes a key enzyme can potentially alter the binding site of the protein, so the resulting mutated enzyme cannot bind to the substrate anymore. In consequence, this mutation alters the phenotype of the individual who is not more able to carry out the metabolic reaction catalyzed by the faulty enzyme.

What gametes are produced by the following organisms:_______.
a. Genotype YyRr, if Y and R are on different chromosomes
b. Genotype YyRr, if dominant Y and R are on the same chromosome, no crossing over
c. Genotype YyRr, if dominant Y and recessive r are on the same chromosome, no crossing over
d. Genotype YyRr, if dominant Y and R are on the same chromosome, 50% crossing over

Answers

Answer:

The correct answer would be -

1- YR, Yr, yR and yr.

2. Yr, yR

3. YR, yr

4. YR, Yr, yR & yr

Explanation:

A mature male or female haploid germ cell that fuses with another gamete of the opposite sex during the process of fertilization to make a zygote in sexual reproduction.

The law of Independent Assortment presented by Mendel says that alleles for different traits are passed and assort independently of one another in the gametes.

1. If Y and R on different chromosomes then they will produce four gametes and assort independently - YR, Yr, yR & yr.

2) If Y and R on the same chromosomes and no crossing over occurs then they will produce only two gametes as Y and R will not come together - Yr & yR.

3).  if dominant Y and recessive r are on the same chromosome, no crossing over then only two gametes will form as Y and r will not assort together - YR & yr.

4). if dominant Y and R are on the same chromosome, 50% crossing over produces 4 types of gametes, YR, Yr, yR & yr.

Do green leaves absorb the maximum amount of light? If not, what color of leaf would
absorb more light?

Answers

Answer:

Chlorophyll a is the chief pigment associated with photosynthesis. As we can see,chlorophyll a absorbs red and blue wavelengths to a higher extent. Green light isn't rejected but rate of photosynthesis is more with red and blue wavelengths of light.

Explanation:

The spectral absorbance of photosystems and chloroplasts is lowest for green light...

All plants, however, has chlorophyll a, which absorbs most strongly at ~450 nm, or a bright blue color.

in what ways can overpopulation be beneficial to differential reproductive success?

Answers

Answer:

Differential reproduction is called the one that occurs as a result of the differences between the individuals that make up a society or sample, where it is those with comparative advantages who manage to reproduce, while those who do not have said advantages tend to die out. It is, in short, a practical application of Charles Darwin's theory of natural selection.

Thus, if there is an overpopulation of a certain species, a series of effects will occur (such as the scarcity of resources, the lack of living space, etc.) that will tend to gradually decrease the population to return to an ideal number of individuals. In this aspect, differential reproduction will be applied, being able to reproduce those that have comparative advantages over the rest, which will inevitably become extinct.

Think about the podcast that you listened to in the Lesson 2.01 Introduction. Write a one-paragraph (using complete sentences) description of the experiment that was performed on these two women. Be sure to include the following: Why was the experiment conducted? What was done to the two women in order to conduct the experiment? What conclusions could be made from this experiment? Why do you think that experiments like this are no longer performed?

Answers

Explanation:

The experiment was conducted with the purpose of understanding what makes us "who we really are"; our environment or genetics?

The two women, Paula Bernstein and Elyse Schein identical twins were separated from each other at birth and only got to be reunited when they turned age 35.

"It's undeniable that genetics play a huge role," says Paula. This makes us concludes that genetics still play a role in determining who really are.

Such experiments are no longer performed today because there are legal restrictions put in place against such actions, including the ethical issues it created.

Collect data: Blood carries many vital substances. Four of these are listed above the Microscopic view. Oxygen and sugar are needed by all body cells. Carbon dioxide and urea are waste products. What are the concentrations of each substance in this sample?

Oxygen:

Carbon Dioxide:

Sugar:

Urea:

Answers

Answer:

Explanation:

in the given sample of blood concentration of all the comonents is normal. the concentration of urea is 2.6 to 6.5 mM, concentration of carbon dioxide is 23-29 meq/L, while concentration of glucose ad oxygen are 0.9 g and 20.1 ml respectively.

Blood is the component of the circulatory system which is essential for the transport of gases and excretion of waste products. It is crucial for nutrient and oxygen supply to the body.

The concentration of oxygen was 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.

The vital substance of blood can be explained as:

Red blood cells are called erythrocytes that are responsible for oxygen transportation through the hemoglobin component to the body parts while on their way back it carries the carbon dioxide.

Sugar is the major form of energy needed by the body for functioning which enters the blood from the liver.

Urea is the waste complement removed with the help of blood collected from the liver and excreted by kidneys.

Therefore, the normal concentration of blood substances is oxygen 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.

Learn more about blood here:

https://brainly.com/question/256609

. Which statement best describes arteries? A. They have thick walls and transport blood away from the heart. B. They have thick walls and transport blood toward the heart. C. They have thin walls and transport blood away from the heart. D. They have thin walls and transport blood toward the heart.​

Answers

Answer:answer is 1

Explanation:

because i’m like that and i know

what is a hypothesis

Answers

Answer:

a suggested sollution or a guess to an information given to you

Which list below correctly identifies the phases of mitosis in order from start to finish?

A. prophase, metaphase, anaphase, and telophase
B. anaphase, telophase, metaphase, and prophase
C. prophase, anaphase, telophase, and metaphase

Answers

Answer:

A. prophase, metaphase, anaphase, and telophase

Explanation:

Answer:

A. Prophase metaphase, anaphase, telophase

I’ll mark brainliest if right

Answers

i think it’s Tt hope this helps
Tt is the answer. I took this last year

Cite particularly the difference in the synthesis of the two biomolecules in animals and plants.

Answers

Answer:

The preceding section reviewed the major metabolic reactions by which the cell obtains and stores energy in the form of ATP. This metabolic energy is then used to accomplish various tasks, including the synthesis of macromolecules and other cell constituents. Thus, energy derived from the breakdown of organic molecules (catabolism) is used to drive the synthesis of other required components of the cell. Most catabolic pathways involve the oxidation of organic molecules coupled to the generation of both energy (ATP) and reducing power (NADH). In contrast, biosynthetic (anabolic) pathways generally involve the use of both ATP and reducing power (usually in the form of NADPH) for the production of new organic compounds. One major biosynthetic pathway, the synthesis of carbohydrates from CO2 and H2O during the dark reactions of photosynthesis, was discussed in the preceding section. Additional pathways leading to the biosynthesis of major cellular constituents (carbohydrates, lipids, proteins, and nucleic acids) are reviewed in the sections that follow.

Go to:

Carbohydrates

In addition to being obtained directly from food or generated by photosynthesis, glucose can be synthesized from other organic molecules. In animal cells, glucose synthesis (gluconeogenesis) usually starts with lactate (produced by anaerobic glycolysis), amino acids (derived from the breakdown of proteins), or glycerol (produced by the breakdown of lipids). Plants (but not animals) are also able to synthesize glucose from fatty acids—a process that is particularly important during the germination of seeds, when energy stored as fats must be converted to carbohydrates to support growth of the plant. In both animal and plant cells, simple sugars are polymerized and stored as polysaccharides.

Gluconeogenesis involves the conversion of pyruvate to glucose—essentially the reverse of glycolysis. However, as discussed earlier, the glycolytic conversion of glucose to pyruvate is an energy-yielding pathway, generating two molecules each of ATP and NADH. Although some reactions of glycolysis are readily reversible, others will proceed only in the direction of glucose breakdown, because they are associated with a large decrease in free energy. These energetically favorable reactions of glycolysis are bypassed during gluconeogenesis by other reactions (catalyzed by different enzymes) that are coupled to the expenditure of ATP and NADH in order to drive them in the direction of glucose synthesis. Overall, the generation of glucose from two molecules of pyruvate requires four molecules of ATP, two of GTP, and two of NADH. This process is considerably more costly than the simple reversal of glycolysis (which would require two molecules of ATP and two of NADH), illustrating the additional energy required to drive the pathway in the direction of biosynthesis.

Any permanent change in a gene is called a

Answers

Mutation is/can be a permanent change also

Body systems interact with each other to maintain homeostasis. Which of the following is an example of interdependent body systems working together to maintain homeostasis?

Answers

Answer: The endocrine, nervous, and muscular systems work together and maintain temperature homeostasis. Insulin, a hormone released from the pancreas, works with the digestive system and maintains energy homeostasis

Explanation:

which of th following processes releases carbon dioxide as waste

Answers

Answer:

Cellular respiration

Explanation:

Cellular respiration releases carbon dioxide and water as waste products.

a gene carries the __ for a trait

Answers

genes carry the information that determines your traits.
hope this helped!
A gene carries the DNA for a trait.

Explain whether an experiment or an observational study would be more appropriate to investigate whether meditation is effective in lowering blood pressure.

Answers

Answer:

Experiment.

Explanation:

An experiment would be more appropriate method to investigate whether meditation is effective in lowering blood pressure because experiment has a control group as well as a testable group. Due to control group and testable group, we can easily find out the effect of meditation in lowering blood pressure if we apply meditation techniques to the testable group and compared it with the control group, we get results.


Mention two important benefits of forests.​

Answers

Answer:

The benefits provided by forest ecosystems include: goods such as timber, food, fuel and bioproducts.

Answer:

1. ecosystems include

2. good such as timber

Explanation:

I hope it help

Why is Glycolysis also known as Alcoholic or lactic acid Fermentation?

Answers

Answer:

In lactic acid fermentation, pyruvate from glycolysis changes to lactic acid. This type of fermentation is carried out by the bacteria in yogurt, and by your own muscle cells. In alcoholic fermentation, pyruvate changes to alcohol and carbon dioxide. This type of fermentation is carried out by yeasts and some bacteria.

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Question 2 of 10Which claim is not defensible?A. The world would be better off if political boundaries didn't exist.B. The nation's debt generally rises during times of war.C. The government works better when the president and the majorityof Congress are from the same party.D. Decreasing taxes on middle-class citizens improves the U.S.economy. Place the following events in the order that they occured.Industrial revolutionGreeks invented democracyRenaissanceHeight of the Roman empireMiddle ages in EuropeWWll Why do we use fractions to represent slope? what is the absolute value of -6 please help Determine the final temperature of sample with a specific heat of 1.1 J/gC and a mass of 385 g if it starts out at a temperature of 19.5C and 885 J of energy are added to it. 11. Calculating the price elasticity of supply Felix is a stay-at-home parent who lives in Houston and does some consulting work for extra cash. At a wage of $25 per hour, he is willing to work 4 hours per week. At $40 per hour, he is willing to work 10 hours per week. Using the midpoint method, the elasticity of Felix's labor supply between the wages of $25 and $40 per hour is approximately , which means that Felix's supply of labor over this wage range is As a part of a clinical study, a pharmacist is asked to prepare a modification of a standard 22g package of a 2% mupirocin ointment by adding the needed quantity of mupirocin powder to prepare a 3% w/w mupirocin ointment. How many mg of mupirocin powder are required? The suns core is made of solid rock. True or false what times 60 equals 105 Transactions that affect earnings do not necessarily affect cash. Identify the effect, if any, that each of the following transactions would have upon cash and net income. The first transaction has been completed as an example. (If an amount reduces the account balance then enter with negative sign preceding the number e.g. -15,000 or parentheses e.g. (15,000).)Required:a. Purchased $133 of supplies for cash. b. Recorded an adjusting entry to record use of $31 of the above supplies. c. Made sales of $1,297, all on account. d. Received $865 from customers in payment of their accounts. e. Purchased equipment for cash, $2,528. f. Recorded depreciation of building for period used, $610. please helppppppp meee Marbury v. Madison asserted The piecewise function h(x) is shown on the graph.What is the value of h(3)? Ice frogs, blizzards, and avalanches were regular occurrences in:U.SCanadaAlaska Babbages punch cards, which used numbers from 0 to 9. Digital or analog. Assume that you live in California and are on vacation, traveling by car from California to Texas. You are injured in a motel room when the bed on which you are sleeping collapses, causing you to fall to the floor. You suffer substantial back and leg injuries, requiring many medical treatments and causing you to miss work for 15 weeks. Your medical bills total $50,000 and your lost wages total $15,000. You intend to sue the owner of the Texas motel.Required:a. Can you bring your case in federal court? Why or why not?b. Can you commence the case in California? What additional information might you need to answer this question?c. At the end of the trial, the jury awards you $100,000 ($50,000 for medical, $15,000 for lost wages and $35,000 for punitive damages). After the trial, the attorney for the hotel approaches and offers to settle the case for $50,000. Should you consider accepting the settlement? Why or why not? PART A: Which statement identifies the central idea of the text? A. African Americans who served in the Civil War were treated differently than white soldiers. B. Frederick Douglass encouraged African Americans to serve in the Union military so they could be granted citizenship. C. The Confederate Army treated African Americans soldiers in the Union Army harshly to discourage slaves from escaping to the North. D. African Americans made up a relatively small amount of Civil War soldiers, making their impact small. Does anyone else play nitro type? In the Energy and Specific Heat lab, what temperature should be recorded as the final temperature of the water when measuring the food sample? A. The temperature of the water when the food sample is first lit B. The temperature of the water when the food sample has finished burning completely. C. The highest temperature the water reaches as the sample burns D. The temperature of the water after the food sample ash has been removed 12x+3y=-9 find y- intercept