Biology Middle School

Which of the following describes an organism?

A group of cells working together
A group of tissues working together
A group of organ systems working together
A group of atoms working together

Answers

Answer 1
A group of organs hope you get a good grade
Answer 2
the answer is a group of cells 

Related Questions

HELP PLEASE!!!!!!


In the United States, less than 0.8% of the population has type I diabetes. Which of the following facts supports the theory that a person's risk of developing diabetes has a genetic, inherited component?
A. If one parent has type I diabetes, each child's chance of developing diabetes is between 1% and 6%.
B. If one identical twin has diabetes, the other twin has a 50-75% chance of having diabetes.
C. If both parents have type I diabetes, each child's chance of developing diabetes is between 10% and 25%.
D. all of these

Answers

The corrert answer is D

The image shown is an artist's drawing of a nerve cell. The overall shape and structure of a nerve cell is unlike most other types of cells. Which particular function of nerve cells is facilitated by the unique shape of the cell? A) communication B) digestion C) metabolism D) transportation

Answers

I would say communication, as neurons transmits messages from one part to another part of the body
Answer:

The correct answer is option A which is communication.

Explanation:

Nerve cells have a different structure from other types of body cells due to a different function.

The function of the nerve cell is to communicate the nerve signals in the nervous system from the receptor to the brain and from the brain to the effector.

The nerve cell has a cell body and an extended fiber type area known as the axon.

This specific structure is suitable for the transport of nerve impulse from one end to another which is for the communication between two nerve cells.

Farmers in areas where there are no major rivers still require water for their crops. Where do these farmers most likely obtain the water needed for their crops? Question 11 options: 1) nearby oceans 2) melting ice 3) morning dew 4) underground sources

Answers

4) underground sources is the best answer.
Oceans have saline not fresh water and morning dew would not be sufficient water.
The answers 4)underground sources

Which BEST explains why people see bananas as yellow?

Answers

We see bananas as yellow because the color yellow is being reflected off of the banana.  Any color that is absorbed, we cannot see.  Yellow is reflected and this is why we can see it.
Hope this helps!

People can see bananas as yellow because the yellow color is reflected on the surface of the bananas.

What is the reflection of light?

It is referred to as light reflection when a light ray hits a polished, smooth surface and bounces back. The incident light rays hit the surface and are reflected off of it. The beam that returns is referred to as the reflected ray.

Reflected light from a mirror or a still body of water is a common example of reflection, but reflection also impacts other kinds of waves besides light waves. Other waves that can reflect include seismic waves, sound waves, water waves, and particle waves.

All colors are absorbed by the surface of the banana, and only the yellow color is reflected. Therefore, people can see bananas as yellow.

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The germ theory of disease states that many diseases are caused by the presence and action of specific

Answers

The germ theory of disease states that many diseases are caused by the presence and action of specific microorganisms.

Answer:

Microorganisms

Explanation:

6. Which of these BEST describes our current understanding about how species evolve over time?

A) As organisms use certain traits more frequently, each organism evolves over time.

B) Populations of organisms evolve rapidly due to genetic changes brought about by random mating patterns.

C) Traits that result in a greater number of mutations occur more frequently, causing the population to evolve.

D) Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.

7) A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation. This mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. Bacteria with this mutation are better able to find and utilize food sources. According to the theory of natural selection, what is MOST likely to occur in future generations of this bacteria?

A) The relative frequency of the mutation will increase as time passes.

B) Because the mutation has changed the DNA of the bacteria, a new species will be formed.

C) Because the mutation is abnormal, the mutation will become more rare with every passing generation.

D) Bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.

Answers

Hello!

6)
D. Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.

Our current understanding about how species evolve is natural selection produces adaptations vital to the survival of organisms. 

7)
B. The relative frequency of the mutation will increase as time passes.

The information provided makes it clear that the mutation is an advantageous mutation; according to the theory of natural selection, since the mutation is beneficial to the bacteria, those with the mutation will survive and reproduce more, passing on the mutation. This way, the frequency of the mutation will increase.

after being vaccinated, many children are treated for fever. this is not considered a danger or harm. why might this happen?

Answers

Vaccinations inject a bit of liquid inside the person that is fairly similar to the symptoms they have for a fever so their body knows what to do when an actual fever comes along. hope this helps! :)

what are the 3 main types of plant tissue

Answers

Hello there!


The three main types of plant tissue are:

1) Dermal

2) Vascular

3) Ground


As always, it is my pleasure to help students like you!

Which statements accurately describe matter? Check all that apply. Only living things are made up of matter. Matter is made up of tiny particles called atoms. Atoms were discovered in the twenty-first century. Atoms cannot be divided. A single atom can be seen only with a standard microscope.

Answers

The right options are;

Matter is made up of tiny particles called atoms, and atoms cannot be divided.

A matter is any object that has mass and occupies space (volume). All matter are made up of tiny particles known as atoms. Atoms are composed of interacting subatomic particles which are; electrons, protons, and neutrons. Matter exists in various states such as solid, liquid, and gas.

Answer:

Matter is made up of tiny particles called atoms.

Atoms cannot be divided.

Matter is defined as anything that has mass and occupies space which could be a plant or animal.

Matter is however made up of smaller/tiny particles called Atom. Matter was discovered in the seventeenth century and not in the twenty first century.

Atom however cannot be divided into smaller parts and is regarded as the smallest unit of matter although it contains some sub-atomic particles such as proton and neutron.

It can however be viewed only with an electron microscope as it is too small to be viewed by a  light or standard microscope.

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Which of the following adaptations best helps desert plants survive? Wide leaves to lose water Spines to reduce water loss Smooth stems to increase transpiration Thin leaves to reduce the ability to store water

Answers

The answer is 'spines to reduce water loss'. Spines are in effect a specialised form of leaf. Obviously, spines have a much reduced surface area compared to a leaf, thereby drastically reducing evapotranspiration. The spines also have an important protective function for the plant. Other adaptions by desert plants would include retaining water (such as succulents), a waxy cuticle on leaves to reduce water loss and closure of the stomata to reduce water loss.

Answer:

mark the other guy brainliest he deserves it

Explanation:

Describe the mass and surface temperature of the main sequence stars.

Answers

 About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive.  But if the body has sufficient mass, the collapsing gas and dust burns hotter, eventually reaching temperatures sufficient to fuse hydrogen into helium. All main sequence stars (including the Sun) are powered by the fusion of hydrogen (H) into helium (He). Fusion of hydrogen requires temperatures of more than 10 million Kelvin.

Answer:

Mass of main sequence star - 10 to 200 times of mass of sun

Temperature of main sequence star - 15-18 million kelvin

Explanation:

Majority of stars in the universe are main sequence stars. These stars consists of helium in their cores. Mass of main sequence stars can be as low as one tenth of mass of sun and can be as high as 150 to 200 times the mass of sun. The age of a star depends on its mass. Thus more massive a star is more is its life. The temperature of star is high enough to fuse the hydrogen with in them to form helium atom. Their temperature can be as high as 15-18 million kelvin.

what are some radioactive resources.

Answers

Uranium and plutonium are highly radioactive, and are used to produce energy during fission in nuclear power plants. Any chemical in the lanthenide and actinide series are radioactive.

The brown spots of bananas are radioactive, but is not strong enough to damage anything.
Uranium, radon gas, alpha particles, gamma rays, etc.

What are Ceres,lda,and Gaspra

A. asteroids

B. comets

C. meteors

D. stars

Answers

Answer:

A. Asteroids

Explanation:

They are asteroids.

Here you find pictures of these amazing asteroids. From left to right you will find Ceres, Ida and Gaspra.

Explain the effects of radiation on the cellular process of mitosis and meiosis

Answers

Mitosis is a process whereby somatic cell divides while meiosis is a process in which germ cell divides.Both are essential processes that occur during development.  However, delay in mitosis can result into alteration in cell kinetics pattern resulting in depletions of all populations.

Which planet most resembles Earth in terms of all of the factors: temperature, gravity, atmosphere, and water?

Answers

No planet in the solar system is equal to Earth.

After a volcanic eruption has covered an area with lava, which of the following is the most likely order of succession in the re-population of the area? * lichens → grasses → shrubs → trees mosses → grasses → lichens → trees grasses → trees → mosses → lichens shrubs → grasses → trees → lichens

Answers

The choices for this question are:
A lichens →grasses →shrubs →trees 
B mosses →grasses →lichens →trees 
C grasses →trees →mosses →lichens 
D shrubs →grasses →trees →lichens

The correct answer is A. Lichens are able to survive in very harsh environments and would therefore be a suitable pioneer. Grasses would be suitable to succeed lichens as the lichens break down the larva rock into soil. After further breaking down of rock into soil by grass, shrubs will start to grow and these will be succeeded by trees as the ecosystem approaches maturity. 

After a volcanic eruption, the order of succession in the re-population of the area is following:

Lichens → grasses → shrubs → trees.

The correct option is A.

Ecological succession

The process of change in the species structure of an ecological community over time is known as ecological succession.Lichens are considered a self-sustained miniature ecosystem of themselves.They can grow themselves in any condition.After lichen, grasses can be grown and, then shrubs and trees.

Thus, the correct option is (A).

Lichens → grasses → shrubs → trees.

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in humans , the allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l). a female who is homozygous for long eyelashes and a male with short eyelashes have a child. identify the phenotype and genotype ratio of the offspring.

Answers

Homozygous means there are two dominant or two recessive genes. In the case of the female, it is dominant, so her genotype is LL. In order for the male to have short eyelashes, he must be homozygous recessive, or ll.
When you cross LL by ll, you will end up with Ll, Ll, Ll, Ll, or 100% heterozygous dominant genotype. The genotype ratio of the offspring is 1:1.

Hope this helps =)

When a homozygous female with long eyelashes (LL) and a male with short eyelashes (ll) have children, all offspring will have long eyelashes with a genotype of Ll, leading to a phenotype ratio of 100% long eyelashes and a genotype ratio of 100% heterozygous (Ll).

In humans, the allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l). A female who is homozygous for long eyelashes (LL) and a male with short eyelashes (ll) will have children. All of the offspring will have one dominant allele for long eyelashes from the mother and one recessive allele for short eyelashes from the father, resulting in a genotype of Ll for each child. Since the long eyelash allele is dominant, all of the children will exhibit the phenotype of long eyelashes. Therefore, the phenotype ratio of the offspring will be 100% long eyelashes, and the genotype ratio will be 100% heterozyous (Ll).

Which headline would be an example of genetic engineering?

A.) Mrs. O'Hara Gives Birth to Fourth Redhead

B.)Farmer Brown's Pigs: Best Quality Ham for the money

C.) Gene Added to Liver Improves Clotting Time

D.) Bacteria Make Human Insulin

Answers

Bacteria Make Human Insulin because the body has its own genetic insulin.

Answer:

The correct answer is option D, Bacteria Make Human Insulin

Explanation:

Through the recombinant technology of genetic engineering, DNA of one organism can be transferred into the DNA of other organism. In a bacteria, the genes can be modified to produce human insulin. The gene for human insulin is chemically joined to the plasmid of bacterial DNA. Thus whenever the bacteria replicates its DNA, it also replicates the gene for human insulin thereby producing multiple sets of synthetic human insulin.

Which phrase best describe a gene

Answers

A gene is a sequence of DNA or RNA which codes for a molecule that has a function

What is the difference between global effects and local effects?

Answers

Local effects are more exclusive to a particular area than global effects

Hope this helps :)
Global  is all of the world or country (mostly world) and local is just your area like state or city

What is the difference between the revolution and rotation of the Earth and the revolution and rotation of moon

Answers

It is important to understand the difference between rotations and revolutions. When an object turns around an internal axis (like the Earth turns around its axis) it is called a rotation. When an object circles an external axis (like the Earth circles the sun) it is called a revolution.

Hope this helps!

-Payshence xoxo

Write a series of paragraphs that shows your knowledge of the following: the biochemical structure of DNA, how DNA replicates, how the DNA structure forms the genetic code, and how that genetic code comes to be expressed as a phenotype.

Answers

The answers are as follows:
1. THE BIOCHEMICAL STRUCTURE OF DNA
The DNA is composed of molecules called nucleotide. Each nucleotide is made up of a phosphate group, a sugar group and a nitrogenous base. The nitrogenous bases are four in number, they are adenine, cytosine, guanine and thymine. The genetic code of a DNA molecule depend on the manner in which the bases are arranged. It has been reported that the nitrogenous bases in DNA molecules of humans is approximately 3 billion in number. Double stranded DNA is made up of two spiral nucleic acid chains, which are twisted into double helix shape. The DNA is packed into tightly coiled structure called chromatin and are stored in the nucleus of cells. Chromatin usually condense to form chromosomes during cell division.

2. DNA REPLICATION
DNA replication is the biochemical process by which two identical DNA molecules are produced from a single original double stranded DNA parent molecule. This is the basic way by which the DNA molecule makes copies of itself. This process is the basis of inheritance and it occurs in all living organisms. DNA replication is a semi conservative process, this means that, each strand in the double helix DNA acts as a template for the formation of a new complementary strand. The major enzyme that catalyses this process is DNA polymerase and other enzymes that are involved include: DNA ligase, DNA primase, DNA helicase and topoisomerase. 

3. HOW DNA STRUCTURE FORM GENETIC CODE
The genetic code is the route via which the DNA molecule carry genetic information in living cells. The genetic code refers to the rules by which the genetic information that is encoded inside the DNA molecule is translated into different type of proteins by the cells of living organisms. The translation process involves the ribosomes, which links up amino acids in the specific manner specified by messenger RNA. Transfer RNA participate in the process by carrying amino acids and by reading the messenger RNA three nucleotides at a time. In genetic code, a group of three DNA bases, called codon, codes for one particular amino acid. For instance, the codon CGT codes for the amino acid alanine. 

4. HOW GENETIC CODES COME TO BE EXPRESSED AS PHENOTYPE
Phenotype refers to a set of observable features of an individual, that is formed as a result of the interaction of the genotype with the environment. Examples of phenotype are: eye color, hair color, skin colour, nose shape, etc.  The genotype refers to the set of genes in a DNA, which is responsible for a particular trait in a man.The phenotype is the physical expression of that trait. Each gene in living organisms typically code for a particular trait, for exmaple eye color. Each gene have different alleles, which code for the same trait.The allele may be dominant or recessive. The phenotype that will eventually be formed will depend on the whether the alleles are dominants or recessive.

What is one similarity between the lungs and capillaries?

A: They are both activated by inhalation.
B: They are both involved in gas exchanges.
C: They are both part of the circulatory system.
D: They are both regulated by the heart.

Answers

its B because Arteries deliver oxygenated blood to the capillaries, where the exchange of oxygen and carbon dioxide takes place.

One similarity between the lungs and capillaries is that they are both involved in gas exchanges.

What do you mean by Capillaries?

Capillaries may be defined as a network of blood vessels that supplies blood as well as oxygen throughout the body.

Both the lungs and the capillaries are actively involved in the exchange of gases in and out of the body. The capillaries are connected to the walls of the alveoli where oxygen and carbon dioxide diffuse. Carbon dioxide is exhaled outside by the lungs, while the oxygen is attached to the RBCs and travels to the heart.

Therefore, one similarity between the lungs and capillaries is that they are both involved in gas exchanges.

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Colliding air masses can form a weather front. Which of the following is not a type of front:
2 points
A Stationary Front
B Storm Front
C Cold Front
D Occluded Front

Answers

Storm Front is not a type of front the types of fronts are stationary ,cold, warm and occluded

What is a basic characteristic of all living cells

Answers

The answer is metabolism. Metabolism helps the cell to create different kinds of chemical reactions. These chemical reactions helps the cell to create life. It also helps maintain the structure of the cells. Aside from that the cellular metabolism helps the cell to adapt in various environment. Cellular metabolism has two different kinds of divisions. These are anabolism and catabolism.
Metabolism helps the cell create different cells

Describe what is happening in each stage and what each stage looks like:

Prophase

Prometaphase

Metaphase

Anaphase

Telophase

Cytokinesis


Describe the purpose of mitosis.

Answers

Prophase is the first phase is when the two sister chromatids pair up and the nucleoli disappears. Prometaphase is the second phase where the microtubules begin to separate from each other, each pair of microtubules attach to the kinetochores and some nonkinetohore microtubules interact with those from the opposite pole of the spindle. Metaphase is the third phase where the chromosomes are lined up on the invisible line of the metaphase plate. Anaphase is the fourth phase where the two daughter chromosomes begin to separate from each other to opposite poles. Telophase is the last phase where the two daughter nuclei form creating two identical nuclei.

Answer:

Mitosis is a type of cell division which produces two genetically similar daughter cells. This is involved in the cells of growth of somatic cells in an organism which has to to be produced with the same genetic material. It is also involved in the asexual mode of reproduction as it produces clones with the same genetic material such as in angiosperms.

Mitosis is divided into two phases- karyokinesis and cytokinesis where karyokinesis is divided into 4 stages which can be easily marked as:

Prophase- chromatin condensation, nuclear envelope disappears. Prometaphase- chromatin condenses to form a packaged structure called chromosomes. Metaphase- chromosomes align at the equatorial plate of the cell, chromosomes highly condensed. Anaphase- chromosomes start separating, each chromatid moves towards the opposite pole of the cell. Telophase - cytokinesis begins, nuclear envelope reappears. Cytokinesis- cell division by the appearance of cell furrow in animal cells and cell plate in plant cells.

At what level does the relationship between a blue whale and ferret separate?

Answers

Probably once they get to the water lol

Blue whales and ferrets separate at the superorder level in biology.

Blue whales and ferrets separate at the superorder level, which happened between 85 and 105 million years ago. The exact relationships among the superorders are still not entirely clear, but they have distinct evolutionary paths.

What is the result of sex cells having mutations during replication

Answers

The offspring could have mutations like physical or mental deformities. Another result is death.

Answer:

offpsring with mutations

Explanation:

:)

Which statement describes the blood type of a person with Alleles lAi? A. It is type ab because I and I are codominant. B. It is type an because a and I are codominant. C. It is type a and I is dominant and A is recessive. D. It is type a because a is dominant and I is recessive .

Answers

the answer is a i think

Answer:

It's D

Explanation:

It is type A because A is dominant and i is recessive.

This is the correct answer

hope it helps! ;)

can you help me,,,,,,please

Answers

Answer: I am going to say the third choice is your best bet.

Explanation:

Assuming the hawk is to be considered top of its food chain, all options besides the third are false.

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A conservation determines that a particular beach is eroding at a rate of 1.1% each year. When writing an explicit formula to represent the amount of beach remaining each year, which value should she use as the common ratio? What are some of the characteristics of the neoclassical style A company purchased $3,400 worth of merchandise. transportation costs were an additional $300. the company returned $235 worth of merchandise and then paid the invoice within the 1% cash discount period. the total cost of this merchandise is: In Franz Kafka's The Metamorphosis, Gregor enjoys human pleasures and sensations, even though he's transformed into an insect. Which of these excerpts from the story best supports that idea? Who, in this tired and overworked family, would have had time to give more attention to Gregor than was absolutely necessary? The household budget became even smaller; so now the maid was dismissed; an enormous, thick-boned charwoman with white hair that flapped around her head came every morning and evening to do the heaviest work; everything else was looked after by Gregor's mother on top of the large amount of sewing work she did. Gregor even learned, listening to the evening conversation about what price they had hoped for, that several items of jewellery belonging to the family had been sold, even though both mother and sister had been very fond of wearing them at functions and celebrations. . . . Gregor's sister no longer thought about how she could please him but would hurriedly push some food or other into his room with her foot before she rushed out to work in the morning and at midday, and in the evening she would sweep it away again with the broom, indifferent as to whether it had been eaten ormore often than nothad been left totally untouched. She still cleared up the room in the evening, but now she could not have been any quicker about it. Smears of dirt were left on the walls, here and there were little balls of dust and filth. At first, Gregor went into one of the worst of these places when his sister arrived as a reproach to her, but he could have stayed there for weeks without his sister doing anything about it; she could see the dirt as well as he could but she had simply decided to leave him to it. . . . Yet Gregor's sister was playing so beautifully. Her face was leant to one side, following the lines of music with a careful and melancholy expression. Gregor crawled a little further forward, keeping his head close to the ground so that he could meet her eyes if the chance came. Was he an animal if music could captivate him so? It seemed to him that he was being shown the way to the unknown nourishment he had been yearning for. He was determined to make his way forward to his sister and tug at her skirt to show her she might come into his room with her violin, as no-one appreciated her playing here as much as he would. . . . No-one was making him rush any more, everything was left up to him. As soon as he had finally finished turning round he began to move straight ahead. He was amazed at the great distance that separated him from his room, and could not understand how he had covered that distance in his weak state a little while before and almost without noticing it. He concentrated on crawling as fast as he could and hardly noticed that there was not a word, not any cry, from his family to distract him. He did not turn his head until he had reached the doorway. A garden has 2 yellow rose plants. These rose plants represent 1/8 of the plants in the entire garden. How many plants are in the entire garden? The graph is supposed to show f(x)=3sin(x/4+1)-1/2. Which of the following are correctly represented in the graph? Select all that apply. (2 answers)a. the amplitudeb. the vertical shiftc. the horizontal shiftd. the periode. the horizontal expansion or compression pleaseeeeeee helppppppppp meeeeeeeee Identify the sentence that incorporates parallel structure. a. My week at camp included rock-climbing, mountain biking and sleep. b. During my week at camp, I swam, hiked, biked and skiing on the lake. c. My week at camp consisted of playing soccer, riding mountain bikes and crafts. d. During my week at camp, I scaled the climbing wall, built a fort, and jumped on the trampoline. Which two of these processes remove airborne CO2 from Earths atmosphere?1. photosynthesis2. respiration3. carbon sequestration4. burning fossil fuels Which formula can be used to solve problems related to the first law of thermodynamics? The radio source ________ is located in a place consistent with the center of our galaxy. Gregory noticed a disparity between his checkbook balance and the balance recorded on his bank statement. Use decoding skills to determine which of these is closest in definition to "disparity." discretion distribution dissection difference Two large and 1 small pumps can fill a swimming pool in 4 hours. One large and 3 small pumps can also fill the same swimming pool in 4 hours. How many hours will it take 4 large and 4 small pumps to fill the swimming pool.(We assume that all large pumps are similar and all small pumps are also similar.) Enter a formula in cell c4 that divides the value in cell b4 by the value in cell b12, using an absolute cell reference to cell b12. what is the predominant use of oil in americaA. TransportationB. Electricity ProductionC. Residential useD. Industrial use Damage to the frontal lobes of the brain is a likely result ofa) consuming low doses of alcoholb) consuming medium doses of alcoholc) binge drinking alcohold) chronic use of alcohol An electronics superstore normally sells a new smartphone for $200, but it is currently offering a 50% discount off the price. The same phone is available online for $200; the website is offering 25% off the phone, plus another 25% discount off all purchases. Where should you buy the phone to get the better deal? Why? Is the product of 2/5 and 5 greater or less than 2/5? Is it greater or less than 5? explain your reasoning. I will mark brainiest is my answer is correct need legit answer thanks In P.E class, Janie ran 5 kilometers in 19 minutes 15 seconds. Based on this information, what was the constant of proportionality?