What is a hypothesis?
O A. A unifying model or explanation based on a large body of
experimental data
B. A guess or prediction based on previous experience or
observation
O C. A statement of fact that describes an action or set of events
O D. A statement that cannot be tested scientifically

Answers

Answer 1

Answer:

B

Explanation:

Answer 2

Answer: B: A guess or prediction based on previous experience or observation.


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Which describes the chromosome theory of inheritance?


1.Each adult organism has four alleles for each specific trait.

2.Offspring inherit two copies of each chromosome from each parent.

3.The traits of offspring are random and unrelated to the parents.

4.Genes are carried from parents to offspring on chromosomes.

Answers

Answer:

i beleive it is answer choice one but if wrong, im so sry

Explanation:

Answer:

4. Genes are carried from parents to offspring on chromosomes I think

Which parts of DNA provide the code for proteins?

Answers

Answer:

The genetic code is the sequence of nucleotide bases in nucleic acids (DNA and RNA) that code for amino acid chains in proteins. DNA consists of the four nucleotide bases: adenine (A), guanine (G), cytosine (C) and thymine (T). RNA contains the nucleotides adenine, guanine, cytosine and uracil (U).

A gene is a section of a DNA molecule that contains the information to code for one specific protein.

The DNA code contains instructions needed to make the proteins and molecules essential for growth, development and health.

What is gene?A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.  Many genes do not code for proteins.

What is DNA?

DNA is the genetic material, which is involved in carrying the hereditary information, replication process, mutations, and also in the equal distribution of DNA during the cell division.

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Which organelle is found in plant cells only? A.7 B.1 C.3 D.6

Answers

It’s a 7 there’s a cell membrane, cytoplasm, nucleus, vacuole, chloroplasts, Mitochondria, and a cell wall. Good luck !

People spray pesticides on crops to kill insects that eat and destroy the crops. However, these insects are becoming resistant to the pesticides. Explain how this could happen.

Answers

The same way bacteria becomes resistant to antibiotics.

Mutations in their DNA.

When an organism or insect develops a mechanism for the removal of the pesticide compound is known as pesticide resistance.

What is pesticide resistance?

The organism or insects develop mechanisms such as the alternation of the binding site of the compound present in the pesticide leading to the development of resistance against the used pesticides. The development of resistance against the pesticide is a slow process, it takes time. The usage of pesticides becomes a failure if organisms develop resistance.

The frequent use of pesticide and insecticides cause changes in the genetic material of the organisms. They help in the development of enzymes and changes in the binding sites. These changes are passed on to the next generation of the organism, which makes the entire population resistant to the particular pesticide and insecticide.

The use of the chemicals should be monitored. Only use when required with rotation.

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what is biotechnology ​

Answers

Answer:

Biotechnology is a broad area of biology, involving the use of living systems and organisms to develop or make products. Depending on the tools and applications, it often overlaps with related scientific fields

A cell removes a toxin it has produced through a chemical reaction. Which characteristic of living things is the cell demonstrating?


the ability to maintain homeostasis

the ability to maintain homeostasis

the ability to grow and develop

the ability to grow and develop

the ability to adapt and evolve

the ability to adapt and evolve

the ability to reproduce

Answers

Answer:

Sweating helps the human body maintain homeostasis by cooling the body when it starts to overheat so the internal temperature is kept more or less the same. When sweat evaporates from the skin, it uses up some of the excess heat energy on the skin, thus helping to keep the body cool.

According to cell theory, all living things are made of cells, and living cells come only from other living cells. Gene theory states that the characteristics of living things are controlled by genes, which are passed from parents to their offspring.

Sample answer: The concentration of oxygen in the atmosphere is maintained at 21 percent by a balance between two opposing processes: removal of oxygen from the atmosphere by most living things and addition of oxygen to the atmosphere by living things such as plants.

Sample answer: The human ability to sweat is an adaptation that helps maintain homeostasis in a hot environment by removing heat from the body when it evaporates. Like other adaptations, the ability to maintain homeostasis by sweating evolved by natural selection sometime in our evolutionary past.

a. Gene theory

b. Homeostasis

B

An adaptation is a trait that helps a living thing survive and reproduce in a given environment. Sample example. The chameleon’s ability to change color to match their background is an adaptation.

False

False

Humans began life as a single cell because we develop from a fertilized egg cell.

Gene theory states that genes are passed down from parents to their offspring. Genes determine the characteristics or traits of an organism. If these traits are particularly beneficial or adaptive, natural selection will cause the organisms with beneficial traits to produce more offspring compared to those without the beneficial traits. This results in a change in traits over time, which is called evolution.

No. Evolution is defined as a change in the characteristics of living things over time. Evolution through natural selection causes differences in the amount of offspring produced. Having offspring (or not) is, by definition, more than one generation.

Sample answer. I think that when ancestors of chameleons could change their color to match their background, they were less likely to be detected and killed by predators than those that couldn’t change their color. Therefore, the individuals that had the color matching ability were more likely to survive and reproduce than those that didn’t. This is an example of natural selection. Over time, this led to the population evolving the color changing ability, as those that didn’t have the ability died out.

Explanation:

i hope this helped you


Fill in the missing mRNA bases sequence that corresponds to the DNA base sequence - CAC GTG GAC TGA



Fill in the missing amino acid sequence that corresponds to the DNA base sequence CAC GTG GAC TGA

Answers

Answer:

mRNA: GUG CAC CUG ACU

amino acids: VAL HIS LEU THR

Explanation:

The missing RNA base sequence to the DNA base sequence: CAC GTG GAC TGA is GUG CAC CUG ACU respectively.

The missing amino acids to the DNA base sequence CAC GTG GAC TGA is VAL HIS LEU THR respectively.

What are amino acids?

Amino acids are organic compounds made up of amino and carboxylic groups.

Amino acids are the primary building blocks of protein.

There are 20 amino acids are present.

Thus, The missing RNA base sequence to the DNA base sequence: CAC GTG GAC TGA is GUG CAC CUG ACU respectively.

The missing amino acids to the DNA base sequence CAC GTG GAC TGA is VAL HIS LEU THR respectively.

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Which phrase best discribes how scientists use the data they collect

Answers

Answer: could you copy/paste or screenshot the phrase options? It'd really help me to answer your question.

Explanation:

What is the classification of virus​

Answers

Answer:

Viruses are classified into 4 groups based on their shape: filamentous, isometric , enveloped, and head and tail.

Many viruses attach to  host cells to facilitate penetration of the cell membrane, allowing their replication inside the cell.

The virus core contains the small single- or double-stranded genome that encodes the proteins that the virus cannot get from a host cell.

Explanation:

not sure if this is what you are looking for

According to the Baltimore classification system, Viruses are classified into seven classes on the basis of their morphology and function.

What is Virus?

A Virus may be defined as a type of microorganism that consists of a nucleic acid molecule in a protein coat and infects cells and may cause disease.

Viruses are classified into seven classes, each of which has its own families of viruses and has differing replication strategies.

Class 1: Double-stranded DNA viruses.

This type of virus usually must enter the host nucleus before it is able to replicate. An Example is Adenoviridae.

Class 2: Single-stranded DNA viruses.

Such types of viruses replicate within the nucleus and pertain highly in vertebrates. An example is Circoviridae.

Class 3: Double-stranded RNA viruses.

Such types of viruses do not depend on host polymerases for replication. An example is Birnaviridae.

Class 4: Single-stranded RNA viruses (positive sense).

Such types of viruses have polycistronic mRNA which is translated into a polyprotein. An example is Flaviviridae.

Class 5: Single-stranded RNA viruses (negative sense).

Such types of viruses must be transcribed by viral polymerases into complementary forms. An example is Filoviridae.

Class 6: Single-stranded RNA viruses (positive sense) that replicate through DNA intermediate.

Such types of viruses use the enzyme reverse transcriptase to convert the positive sense RNA into DNA. An example is Retroviruses.

Class 7: Double-stranded DNA viruses that replicate through a single-stranded RNA intermediate.

Such types of viruses have a double-stranded gapped genome that is subsequently filled into a covalently closed circle that serves as the template for the production of viral mRNA. An example is the Hepatitis B virus.

Therefore, it is well described above.

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Which scenario is likely to result in the most diverse offspring?

Asexual reproduction by budding
Asexual reproduction by binary fission
Sexual reproduction between two individuals in the same population
Sexual reproduction between two individuals from different continents

Answers

Answer:

sexual reproduction between two individuals from different continents

PLZ HELP IM TAKING MY EXAM!! which of the following best explains the impact of mrna being double stranded before translation

Answers

Answer:

Impact of double-stranded mRNA before translation would inhibit the binding of tRNA to mRNA ti synthesize protein.

Explanation:

The mRNA is a molecule that, with the exception of viruses with double-stranded RNA, has only one chain. It is in charge of conducting to the ribosomes the sequence of nucleotides that makes possible the translation and the synthesis of proteins.

Once the ribosome translates the information of each codon of the mRNA, a transfer RNA (tRNA) molecule, with a complementary anticodon, provides the amino acid corresponding to the translated codon.

If the mRNA were double-stranded, the translation process would be altered, since binding of the tRNA with the amino acid it carries and mRNA codon would not be possible, as well as the protein synthesis.

which statement best describes how eating regular meals help your body maintain homeostasis

Answers

Answer:

regular meals provide your body with a constant supply of energy

Explanation:

Answer:

constant supply of energy

Explanation:

Earthworms are a species of worms that lives in moist soil along with other organisms like tiny insects and bacteria. Earthworms obtain water and nutrients by eating dead plant material found in the soil. Earthworms also release waste materials that help enrich the soil.

Based on this information, which sentence is correct?

The earthworms are an environment.
The earthworms are a community.
Soil is the earthworm’s habitat.
Soil is the earthworm’s niche.

Answers

Answer:

soil is the earthworm's habitat

Explanation:

Answer:

C

Explanation:

When the concentration of molecules on both sides of a membrane is the same, the molecules will

Answers

The molecules will continue to move across the membrane in both directions

Hope this helps! ;)

what is cellurar respiration?

Answers

Answer:cellular respiration is a process by which cells use oxygen to produce energy from food.

This happens in the mitochondria

A community switches from a coal power plant to a wind power plant to
obtain electricity. What is a likely outcome of this switch?
A. Bird and bat populations will grow larger.
B. Noise pollution in the community will decrease.
C. Electricity will become less expensive.
D. Acid rain will be reduced.

Answers

Answer:

C. electricity will become less expensive

Explanation:

as wind energy is free, so Electricity will become cheap.

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Merry Christmas good day

Answer: D. acid rain will be reduced

Explanation:

which renewable energy source do you think would be best to develop first

Answers

Answer:

Geothermal and Nuclear

Explanation:

Geothermal is the most reliable renewable energies and comes from the Earth. Nuclear energy is actually non-renewable but it is safe and extremely effecient.

Large reefs are thousands of years old. True or false identify if it is false

Answers

Answer:

True

Explanation:

y e s .

It’s true, I answered on edge 2020

How Fast can you answer how fast can i give you brainliest????? HELP...

Answers

Answer:

Explanation:

I think it's b or d may a

Answer:

The answer is C: Pond

Explanation:

its definition is the closest to the question: a small body of still water formed naturally or by hollowing or embanking.

I deeply apologize if this is incorrect.

I hope this helped and if it did I would appreciate it if you marked em Brainliest. Thank you and have a nice day!

Which is a sequence of actions that a system undergoes?


goals

feedback

process

inputs

Answers

Answer:

C, process.

Explanation:

A process is a sequence of actions that a technological system undergoes to produce an output.

Herman's company has adopted a paperless policy. Employees no longer print letters or documents and instead do everything on the computer. Office paper use has dropped by 40% in the last six months. If everyone adopted the same policies, what impact would that have on the environment?

Answers

Answer:

There would be a decrease in deforestation, because fewer trees would be cut down for paper.

Explanation:

If everyone reduce the use of papers it will lead to reduce in deforestation.

What is deforestation?

Deforestation refers to the loss of forest area worldwide to other uses such as agricultural land, urbanization and mining activities. Deforestation, greatly accelerated by human activities since the 1960s, has adversely affected natural ecosystems, biodiversity and climate.

Several factors, both human and natural, cause deforestation. Natural factors include natural forest fires and diseases caused by parasites that can lead to deforestation. Nevertheless, human activities are one of the main causes of global deforestation.

Therefore, If everyone reduce the use of papers it will lead to reduce in deforestation.

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Can someone please help me this is Biology in 7th Grade

Answers

The correct answer is C. They move to an area with lower oxygen concentration

Explanation: Gas molecules can pass through semi-permeable which means they don’t need transport proteins for the movement

Hope this helps :))

How convenient fingerprinting be used to establish relationships between relatives

Answers

it can show us our history and may help us discover relatives we never new we had or lot contact with.

what are the functions of pseudopodia in amoeba?

Answers

Answer:

Pseudopods are used for motility and ingestion. They are often found in amoebas.

Explanation:

Determine the temperature of the bar on the fahrenheit scale.

Answers

Answer:  

Determining bar temperature on Fahrenheit scale -

The temperature of the bar is given as 50 degrees Celsius.

If we know the temperature on the Celsius scale, we can convert it to the Fahrenheit scale.

We know

C / 5 = (F-32) / 9; Where C is the temperature on the Celsius scale and F is the temperature on the Fahrenheit scale.

Now,

50/5 = (F-32) / 9

Or, (F-32) / 9 = 10

Or, F-32 = 90

Or, F = 90 + 32

Or, F = 112 degrees Fahrenheit.

That is, the temperature of the bar on the Fahrenheit scale is 112 degrees Fahrenheit

Explanation:

Which of the following are abiotic factors? (Multiple Answers

Answers

Answer:

atmosphere,sunlight,wind water

The thallus of a mold consists of long, branched, threadlike filaments of cells called _________ that form a tangled mass called a

Answers

Answer:

Hyphae; mycelium.

Explanation:

Fungi can be defined as living microorganisms that are eukaryotic in nature and are able to reproduce using both means of reproduction i.e both asexually and sexually. Also, fungi do not have chlorophyll but are of great importance to the human world both scientifically and practically.

A thallus can be defined as the vegetative or bodily structure of fungi. Thus, the various forms of fungi are;

I. Yeast.

II. Mushroom.

III. Mold.

A mold is typically multicellular (has more than one cell) and filamentous in nature. The thallus of a mold consists of long, branched, threadlike filaments of cells called hyphae that form a tangled mass called a mycelium.

The thallus of a mold consists of long, branched, threadlike filaments of cells called Hyphae that form a tangled mass called a mycelium.

What are hyphae and mycelium in fungi?

Hyphae are the tubular projections of multicellular fungi that form a filamentous network. Fungal hyphae release digestive enzymes in order to absorb nutrients from food sources.

mycelium, the mass of branched, tubular filaments of fungi. The mycelium makes up the thallus, or undifferentiated body, of a typical fungus.

Thus,  hyphae and mycelium is the correct answer.

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HEYY GUYYYSS Heelppp ILL MARK you BraINLiEST

Answers

Answer:

#1, #2, and #4 are all true. #3 is false

Explanation:

QUICK HELP!!!

____ living cells can be the trigger for cancers.What is the missing word in this sentence?

Answers

Virus.

Sorry, if anything is wrong

Virus

____ living cells can be the trigger for cancers.What is the missing word in this sentence?

How are birds different from reptiles?
a.they are endothermic

b.they are heterotrophic

c.they have a backbone

d.they breathe with lungs

Answers

Explanation:

The correct answer is A

a: they are endothermic
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