What is a hypothesis?
A. an educated explanation for the set of observations
B. an organized way of recording data
C. the results of an experiment
Udens

What Is A Hypothesis?A. An Educated Explanation For The Set Of ObservationsB. An Organized Way Of Recording

Answers

Answer 1

Answer:

A.

Explanation:

The other options don't make sense.

Answer 2

Answer:

A.) an educated explanation for the set of observations

Explanation:

Hypotheses are testable statements. People then conduct experiments or studies to collect information that either proves or disproves the hypothesis.


Related Questions

The amount of blood ejected with each beat of the heart is known as:

Answers

The amount of blood ejected with each beat of the heart is known as the Stroke volume

What is Stroke volume?

Stroke volume is the volume of blood pumped out of the left ventricle of the heart during each systolic cardiac contraction.

It is the difference between end-diastolic and end-systolic volumes.

Thus, it is the volume ejected with each heart beat.

Hence, the amount of blood ejected with each beat of the heart is known as the Stroke volume

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Which is considered a chemical mutation? tanning beds, tobacco, X-rays, or sunlight

Answers

Explanation:

chemical mutations are those chemical which change the DNA molecule in such an extent that it function and make different expressions of gene

tobacco is considered as chemical mutation

The reason that skin cells start to swell after soaking in water is that the cell membranes are

Answers

The outer layer of the epidermis, called the stratum corneum, is composed of alternating bands. When hands are soaked in water, the keratin absorbs it and swells.

Which factor helps determine the fertility rate of a group of people?
A. Wealth
B. Death rate
C. Farmland
D. Consumption rate

Answers

your answer is B. Death rate

What causes an ionc bond?​

Answers

An ionic bond can be formed after two or more atoms loss or gain electrons to form an ion. Ionic bonds occur between metals, losing electrons, and nonmetals, gaining electrons. Ions with opposite charges will attract one another creating an ionic bond.
After two or more atoms loss or gain electrons to form an ion

Question 7 (True/False Worth 1 points)
(05.03 LC)
The correct way to calculate population density is by dividing the total population by the land area.
O True
O False

Answers

Answer: true

Explanation:

How many times does the Krebs Cycle turn for one molecule of glucose?

Answers

Two turns of Kreb's cycle are needed for one molecule of glucose.

The Kreb's Cycle

The cycle represents part of the process of breaking down glucose to extract the locked energy in the form of ATP.

Each glucose molecule to be broken down first undergo glycolysis at the end of which 2 pyruvate molecules are produced.

Each turn of the Kreb's cycle requires a molecule of pyruvate. Thus, the two pyruvates molecules generated from single glucose will require 2 turns of Kreb's cycle.

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determine the following describe an acid,base, or neutral substance

Answers

According to the research, acids and bases are two different types of substances opposite to each other and it is neutral when it is neither acidic nor alkaline.

What is an acid, base or neutral substance?

An acid is that chemical substance capable of transferring protons (H+) to another chemical substance.

A base is that chemical substance capable of capturing protons (H+) from another chemical substance.

A neutral substance is one that when dissolved in water dissociates into its ions.

Therefore, we can conclude that according to the research, acids and bases are two different types of substances opposite to each other and it is neutral when it is neither acidic nor alkaline.

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Why are stems so controversial

Answers

The stem cells are so controversial because it involves the destruction of the human embryo as well as its life for just research purposes only.

What are Stem cells?

Stem cells may be defined as cells that are totipotent and pluripotent in nature and have the prospect to mature into many diverse types of cells in the body.

Embryonic stem cells are the type that is considered most unethical and controversial. The stem cell debate is the contemplation of the moralities of research involving the maturation and use of human embryos for only research methodologies.

Destruction of such important life for our own benefit or research purposes makes the podium controversial.

Therefore, it is well described above.

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Read the passage from "Names/Nombres" by Julia Alvarez.

Our first few years in the States, though, ethnicity was not yet “in.” Those were the blond, blue-eyed, bobby-sock years of junior high and high school before the sixties ushered in peasant blouses, hoop earrings, serapes. My initial desire to be known by my correct Dominican name faded. I just wanted to be Judy and merge with the Sallys and Janes in my class. But, inevitably, my accent and coloring gave me away.

Which detail best conveys the main idea that Alvarez wants to fit into her new culture?

Our first few years in the States, though, ethnicity was not yet “in.”
Those were the blond, blue-eyed, bobby-sock years of junior high and high school . . .
. . . before the sixties ushered in peasant blouses, hoop earrings, serapes.
I just wanted to be Judy and merge with the Sallys and Janes in my class.

Answers

The detail that best conveys the main idea that Alvarez wants to fit into her new culture is as follows:

I just wanted to be Judy and merge with the Sallys and Janes in my class.

Thus, the correct option is D.

What is Ethnicity?

Ethnicity may be expressed as the sociable group a person belongs to, and either recognizes with or is determined by others, as a consequence of a mixture of cultural and other elements including the tongue, diet, belief, origin, and physical attributes traditionally associated with race.

The context of this story illustrates the difficulty faced by Alvarez to fit into the American culture as she belongs of Latin origin.

She desired to match in and be tolerated in this civilization and that's why she expresses that she wanted to connect with the Sallys and Janes in her classroom, as they had the American prototype and culture that everyone respected.

Therefore, it is well described above.

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What adaptations does the small intestine make for absorption?

Answers

The small intestines are well adapted for absorbing nutrients during digestion by being very long, having villi and microvilli that increase surface area, using muscular contractions to move and mix food, and receiving and housing digestive enzymes and bile that help the breakdown of food.

The adaptations in which the small intestine make for absorption is the presence of a finger-like structure called villi.

What is Villi?

These are finger-like structures found in the small intestine which increase the surface area for absorption.

They possess blood vessel which ensures the nutrients are transported to other parts of the body.

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Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. Which structure or structures produce substances most likely to affect the development of these traits?
testes
ovaries
prostate gland
vulva

Answers

Answer:

testes

Explanation:

The increased secretion of testosterone from the testes during puberty causes the male secondary sexual characteristics to be manifested. In males, testosterone directly increases size and mass of muscles, vocal cords, and bones, deepening the voice, and changing the shape of the face and skeleton.

Answer:

testes

Explanation:

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics and their developments are affected by testes

Within a decade of the introduction of a new insecticide, nearly all of the descendants of the target pests were immune to the usual-sized dose. The most likely explanation for this immunity to the insecticide is that…?

Answers

Answer:

mqa-vivn-jei

Explanation:

truth and dare?

Answer - d: the pests developed physiological adaptations to the insecticide

Explanation: Pests become resistant by evolving physiological adaptations that protect them from the chemical.

PLEASE HELP! I WOULD APPRECIATE IT!
Which of the following is true about Earth's freshwater, air, soil and trees? A. Although these resources are renewable, their present benefits can be reduced if used carelessly. B. Although these resources are renewable, they present very few benefits for humans. C. These resources are nonrenewable, so humans must stop using them if they are to survive. D. Although these resources are nonrenewable, humans don't have to worry about conserving them.​

Answers

Which of the following is true about Earth's freshwater, air, soil and trees?

A. Although these resources are renewable, their present benefits can be reduced if used carelessly.

B. Although these resources are renewable, they present very few benefits for humans.

C. These resources are nonrenewable, so humans must stop using them if they are to survive.

D. Although these resources are nonrenewable, humans don't have to worry about conserving them

Place the following in order of blood flow back to the heart.

- heart
- capillaries
- veins
- superior and inferior vena cava

Answers

Superior and inferior vena cava then heart capillaries then veins

Round seeds are dominant over wrinkled seeds in
the pea plants that Mendel studied. Provide the
genotypes and phenotypes of offspring produced
when a heterozygous round plant crosses with
another heterozygous round plant.

Answers

Genotype - RR - 25%, Rr - 50%, rr - 25% (1:2:1)

Phenotype - Round seeds - 75%, Wrinkled seeds - 25% (3:1)

How explain your answer?

Let the letter "r" stand for the alleles, where R is round seeds and r is wrinkled seeds. A genotype is an individual's genes represented through alleles. Phenotypes are how the genes express themselves. In other words, genotypes will be written using letters, the alleles, and phenotypes will be the possible outcomes of the alleles.

Both of the parent seeds have the genotypes Rr and the phenotype of round seeds.

If you create punnet square (which had four boxes in total) 1 will have RR, 2 will have Rr, and 1 will have rr. These are the ratios for the genotypes. Each box represents 25%, so the percentages will be 25, 50, and 25. Finally, 3 of these boxes (RR and Rr) will result in round seeds because those are dominant. Only the genotype rr will result in wrinkled phenotype. Therefore, the ratio is 3:1 or 75% to 25%.

Thus, this could be the answer.

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3. what is an ecosystem?
o a group of animals of all the same species in an area
a group of living and nonliving things
the process for converting energy into food
the relationship between plants and animals

Answers

Answer:

A group of animals of all the same species in an area.

Explanation:

After absorption, long-chain fatty acids and monoglycerides inside intestinal cells are

Answers

After absorption, long-chain fatty acids and monoglycerides inside intestinal cells are reformed into triglycerides.

Where are long chain triglycerides absorbed?

As previously mentioned, MCTs do not delay gastric emptying and are absorbed faster in the intestine than MCTs, being transported via blood to the liver.

In this case, long-chain triglycerides are oils or fats of vegetable or animal origin, and are obtained from the reaction between a fatty acid and glycerol.

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What is the function of lacI in the regulation of the lac operon? It is the operator that mediates the transcription of the structural genes. It is a structural gene that encodes permease. It encodes a repressor that, in the absence of lactose, binds to the lac operator and blocks expression of the structural genes. It is the promoter that mediates the transcription of the operon. It encodes a repressor that, in the presence of lactose, binds to the lac operator and blocks expression of the structural genes.

Answers

The function of lacI in the regulation of the lac operon is that it encodes a repressor that, in the absence of lactose, binds to the lac operator and blocks the expression of the structural genes. Thus, the correct option is C.  

What is Lac operon?

Lac operon may be defined as an operon or a set of genes with a single promoter that encodes genes for the carrier and metabolism of lactose in E. coli and other bacterial species.

The concept of the operon was first proposed by Jacob and Monod in 1961.

The lacI gene product, the lac repressor, is expressed from a separate transcriptional unit upstream from the operator.

When lactose is absent, the lacI gene regulates and produces repressor mRNA which translates repression.

Therefore, it is well described above.

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Explain how the structure of the nephron and its associated blood vesseles enable the kidney to carry out its functions

Answers

The explanation of how the structure of the nephron and its associated blood vessels is; As described below

What is the Operation of the Kidney?

The way the kidney is enabled to carry out its' functions are the processes below;

Each human kidney is made up of approximately one million filtering units called nephrons. Now, each nephron includes a filter, called the glomerulus, and a tubule.

Finally, the nephrons work through a two-step process namely;

- The glomerulus filters your blood. Ultrafiltration in glomerulus - smaller molecules filtered out in the glomerulus (e.g. glucose, water, minerals)

- The tubule returns needed substances to your blood and removes wastes.

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why being heterozygous for sickle cell anemia in an area with high malaria rates is most beneficial when compared to homozygous dominant or recessive individuals.


help plssssssss

Answers

Answer:

Heterozygous people for sickle cell anemia are more resistant to the debilitating effects of malaria than the normal homozygous people.

Which best summarizes the flow of energy in a producer?
O Sun > ADP > muscle cells
O Sun > mitochondria > CoH1206
O Sun > chloroplasts > mitochondria
O Sun > mitochondria > chloroplasts

Answers

The correct answer to the given question is O Sun > chloroplasts > mitochondria ie. Option (C)

Chemical reactions are how energy moves through living things. One set of substances, known as reactants, are transformed into another set, known as products, during each chemical reaction.Such reactions take place in plants as a result of the sunlight-to-chemical energy conversion process, which powers plant growth and other operations.In particular structures known as chloroplasts, this process, referred to as photosynthesis, involves the combination of carbon dioxide and simple sugars to create more complex carbohydrates. The cells of plants, algae, and some protists include these membrane-bound organelles called chloroplasts.From one atom or molecule to another, electrons move. The relevance of these oxidation-reduction (or redox) reactions in mitochondria to living systems cannot be overstated.In this manner, molecules that carry energy are created and put to use for efficient energy transfer

Hence, the correct answer is O Sun > chloroplasts > mitochondria ie. Option (C)

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Suppose that a person takes a fall while hiking and develops tetanus when the pathogen enters through an open wound in their arm. They do not spread the tetanus infection to anyone else. The tetanus infection is considered to be ______.

Answers

The tetanus infection is considered to be a Droplet infection.

What is Tetanus?

Tetanus is a neurological disease which is characterized by the occurrence of spasms in the muscle.

Tetanus can be caused if initial care does not take place after the wound occurs and therefore, it is very important to immediately take care of the wound.

To treat the wound tetanus immunoglobulin and tetanus toxoids are given to the person, however, it is necessary to give the two injections using different syringes and at different sites, because the immunoglobulin can cause neutralization fo the toxoid.

Thus, this could be the answer.

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In a laboratory, students used a stimulus that decreased the distance between R waves on an ECG. This represents a _____. increased length of time for one heartbeat and increased heart rate decreased length of time for one heartbeat and increased heart rate decreased length of time for one heartbeat and decreased heart rate increased length of time for one heartbeat and decreased heart rate

Answers

The information represents a B. decreased length of time for one heartbeat and increased heart rate.

What is stimulus?

It should be noted that stimulus means a change in the structure of an organism based on the environment.

In this case, in the laboratory, the students used a stimulus that decreased the distance between R waves on an ECG. This leads to decreased length of time for one heartbeat and increased heart rate.

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What reduces friction around the lungs as they expand and contract?

Answers

The answer choice which reduces friction around the lungs as they expand and contract is; Choice C; Pleural fluid.

What reduces friction around the lungs as they expand and contract?

A membrane with two layers, termed the pleura surrounds the lungs. A slippery liquid called pleural fluid acts as a lubricant to reduce friction in the space between those two layers, called pleural cavity during breathing.

Remarks:

A. Surfactant

B. Synovial fluid

C. Pleural fluid

D. Mucus

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What are homotopic brain areas? Group of answer choices regions of the cortex that are organized according to spatial maps of the environment areas in corresponding locations in the two cerebral hemispheres areas in the brain that are organized according to spatial and auditory frequency regions of the cortex found within the same cerebral hemisphere

Answers

The homotopic brain areas are the reas in the brain that are organized according to spatial and auditory frequency regions of the cortex found within the same cerebral hemisphere.

What are homotopic brain areas?

It should be noted that the homotopic brain areas are the connectivity between the mirror areas of the brain hemisphere.

In this case, the homotopic brain areas are the reas in the brain that are organized according to spatial and auditory frequency regions of the cortex found within the same cerebral hemisphere.

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Please help me answer this task about Plant Biotechnology

Answers

Answer:

Plant biotechnology can be defined as the use of tissue culture and genetic engineering techniques to produce genetically modified plants that exhibit new or improved desirable characteristics.

Explanation:

These crops offer several benefits both farmers and consumers.

...

Pocket K No. 2: Plant Products of Biotechnology.

Product Trait

Bean Virus disease resistance

Canola Herbicide tolerance, modified oil/fatty acid, pollination control system, phytase production

Cotton Herbicide tolerance, insect resistance, low gossypol

Eggplant Insect resistance

5. How can we say that added sugar is not necessary for our health (it's not), when we learned that
aerobic cellular respiration uses glucose as a fuel source? (hint - where did hunter/gatherers our
ancestors, get sugar?)

Answers

Answer:

more than likely fruits and berries

or natural sugars

The body does not require any added sugar to stay healthy. Hunters/gatherers and our ancestors consumed fruits and milk that are natural sugar to obtain energy.

What is the difference between added sugar and natural sugar?Natural sugars are found in unprocessed food such as fruits and milk.Fruits contain fructose and milk contains lactose.On the other hand, added sugars are the artificial sweeteners that we often add to our daily diet in the form of white sugars and caloric sweeteners. From the perspective of health, it is always better to opt for natural sugar that keeps our body stable energy and stable metabolism.Added sugars are harmful when consumed in higher quantities.

Hence, added sugar is not necessary for our health when we have learned that aerobic cellular respiration uses glucose as a fuel source that can be obtained from natural sugar.

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The major pathway of communication between the right and left hemispheres is the:.

Answers

The major pathway of communication between the right and left hemisphere is the corpus callosum.

The cerebrum is the recognizable gray covering of the human brain, appearing to comprise the majority of its mass. The cerebral cortex is the wrinkly area; the remainder of the anatomy is hidden behind that layer. The longitudinal fissure, which is a significant gap between the two sides of the cerebrum, exists. It divides the brain into right and left cerebral hemispheres, which are two independent parts. The main channel for communication between the two hemispheres of the cerebral cortex is provided by the white matter of the corpus callosum, which is located deep inside the cerebrum.

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The cell membrane is said to be:

Answers

[tex]\huge\mathfrak\red{ANSWER}[/tex]

Semi-Permeable

Explanation is in the pic

Hope it heps

Answer:

The cell membrane is said to be semi-permeable.Explanation:What is meant by a semi-permeable membrane?

✈This is a membrane which allow only certain substances to go in or out of the cell.

The Cell membrane of living cells is said to be a semi permeable membrane.

Hope it helps!

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