Scientists create models to help make sense of the natural world. Models are powerful tools that help scientists predict how things work. Models should be scientifically testable. When a model fails to predict correctly, the model must be revised or replaced. A good example of this kind of model would be one that represents an animal or plant cell as drawing to illustrate the parts of the cell.

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Answer 1

Answer:

The answer is C, two dimensional module

Explanation:

I took the k12 test.


Related Questions

if you were to take 10 breaths/min and inhaled about 600 ml/breath, your minute ventilation rate would be

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your minute ventilation rate would be 6 L/min :)

HELP ASAP PLS! just need 1 question:( i don’t understand what it’s asking !:(

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Answer:

As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured.

Explanation:

What percentage of body water loss can impact athletic performance?

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Exercise performance begins to decline once water loss exceeds 2% of an individual's body mass.

Mention some of plant organs​

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Answer:

Root,stem,Leaf and flower

Answer:

Plants are made up of organs, including roots, leaves, the stem and reproductive organs.

Each organ has its own functions.

Together, the organs of a plant allow it to carry out the seven processes of life.

Explanation:

where does the electron transport chain get the high-energy electrons that are passed down the chain​

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Answer:

It gets the electrons from NADH and FADH2, which are produced in the Krebs cycle.

Explanation:

What inputs of photosynthesis move through the stomata?

Answers

Answer:

The gas exchange of carbon dioxide and oxygen occurs through the stomata.

Explanation:

Hope this helps.

The movement of gas in the opposite direction

A particular diploid plant species has 48 chromosomes, or two sets. A mutation occurs and gametes with 48 chromosomes are produced. If self-fertilization occurs, the zygote will have _____ set(s) of chromosomes.

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Answer:

4 sets

Explanation:

Both gametes will each have 48 chromosomes (2 sets). So if fertilisation were to occur, two of those gametes (both with 2 sets each) the zygote will have 4 sets.

If self-fertilisation occurs, the zygote will have two set(s) of chromosomes.

What is self fertilisation?

Self-fertilization, also known as self-pollination, is a type of sexual reproduction in which a hermaphroditic or monoecious organism fertilizes its own gametes. This means that the male and female reproductive organs are present in the same individual, allowing for self-fertilization to occur.

In plants, self-fertilization can occur through a variety of mechanisms, including self-pollination by wind or gravity, or by the transfer of pollen from the anther to the stigma of the same flower. Self-fertilization can also occur in animals that are hermaphroditic, such as some species of snails and slugs.

Self-fertilization can have both advantages and disadvantages for the organism. It can ensure reproduction in isolated or low-density populations, but it can also limit genetic diversity and increase the risk of inbreeding depression.

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which molecule is needed for photosynthesis to occur?

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Answer:

Carbon dioxide and water

Explanation:

plants prepare their food in presence of these molecules to produce sugar and oxygen which we required for survive

HELP NEEDED!!!!!!!!!BIOLOGY

Answers

Answer:

Explanation:

isotonic - direction of osmosis is equal on both sides

hypertonic - direction of osmosis is outside of the cell

hypotonic- direction of osmosis is into the cell

the small bones in the middle ear that transmit vibrations to the inner ear

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Answer:

, yes..............

Explanation:

because the vibrations are transmitted to the inner ear after the bones amplify it

Ossicles are the body's tiniest bones. the malleus (hammer), incus (anvil), and stapes (stirrup). Ossicles amplify sound. 

What are ossicles?

Ossicles are very little bones; in fact, they are the tiniest bones in the entire human body. The malleus (hammer), the incus (anvil), and the stapes are the names of the three bones because of the forms they make (stirrup). The sound is amplified even further by the ossicles.

In order to reach the eardrum, sound waves must first enter the outer ear and then proceed via the ear canal, which is a very short conduit. The incoming sound waves cause the eardrum to vibrate, and the eardrum in turn transmits these vibrations to three very small bones located in the middle ear. The malleus, incus, and stapes are the names given to these three bones.

Hearing is dependent on a series of intricate steps that convert sound waves in the air into electrical impulses. These steps are necessary for hearing.

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If there is oxygen around, how will yeast cells make ATP?

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ummm mom mm mmmmmmmmmmmmmm

help me pls:
7. Distinguish among asymmetry, radial symmetry, and bilateral symmetry.

8. Define cephalization. What is its relationship to bilateral symmetry?

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Answer:

Bilateral symmetry because animals are able to be cut down the middle and have two equal half’s.

Explanation:

Cephalization means an evolutionary trend where nervous tissue over many generations become concentrated on one end of the organism........... I hope this helps !!!!!

umm... but UwU❤️‍❤️‍

Name the two major components of chloroplasts, and associate each with one of two sets of
reactions that occur during photosynthesis. How are the two sets of reactions related?

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Explanation:

i dont knowwwwww sorryyyyy

I need to know FAST


The failure of homologous chromosomes to separate properly during meiosis
s called
a. Hondisjunction
C. Autosomnes
b. Crossing Over d. Karyotype

Answers

Answer:

Nondisjunction

Explanation:

Nondisjunction occurs when homologous chromosomes or sister chromatids fail to separate during meiosis, resulting in an abnormal chromosome number. 

The top strand of the DNA molecule was used as a template to transcribe the mRNA

Agree

Disagree

Why

Answers

Answer:

The upper strand of DNA is the "mRNA-like" strand. The lower strand is the strand that is complementary to the mRNA. The -35 region (TTGACA) and -10 region (TATATT) of the promoter sequence and the transcriptional start site (the A) is indicated on the coding strand.

can yall see if im right

Answers

Answer:

Yes you are correct

Explanation:


Plant cells can produce glucose.
Suggest why yeast cells cannot produce glucose.

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Answer:

Glucose can still be broken down in the absence of oxygen in order to meet the cells energy requirements. In plant and yeast cells pyruvate is converted into carbon dioxide and a type of alcohol called ethanol.

Explanation:

Explanation:

This was what I saw on the internet

Glucose can still need broken down in the absence of oxygen in order to meet the cells' energy requirements. In plant and yeast cells, pyruvate is converted into carbon dioxide and a type of alcohol called ethanol.

4. How are histones related to
nucleosomes?

Answers

Answer:

Nucleosomes are made up of DNA that's wound around histones

Explanation:

Hope this helps.

Answer:

The nucleosome is the fundamental subunit of chromatin. Each nucleosome is composed of a little less than two turns of DNA wrapped around a set of eight proteins called histones, which are known as a histone octamer. Each histone octamer is composed of two copies each of the histone proteins H2A, H2B, H3, and H4.

lizards on a small island are more likely to have to mate with close relatives. the form of microevolution is

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Answer: the founder effect

Explanation:

which process is a plant incapablevof conducting in the dark why​

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Answer:

hiiiiiiiiiiiiiiiiiiiii

Answer:

During night hours, most plants switch from photosynthesis to the opposite process, respiration, in which carbon dioxide and water are produced rather than consumed.Explanation:

Which of the following represents the initial stage of learning in the process of conditioning? A. Acquisition B. Generalization C. Discrimination D. Stimulus contiguity Please select the best answer from the choices provided A B C D.

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Answer:

A

Explanation:

Aquistion

Natural selection, mutation, genetic drift, nonrandom mating, and gene flow are all mechanisms of ______ and can change allele frequencies in populations.

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They are all mechanisms of Evolution and can change allele frequencies in populations

Natural selection, mutation, genetic drift and gene flow are all capable of causing varying changes in allele frequencies in a population. and these changes leads to the violation of Hardy-Weinberg assumptions

Hardy-Weinberg assumption states that; for a population to experience an unchanged allele frequencies, certain conditions must be met by the population such as ; absence of natural, random mating , absence of migration and absence of mutation.

Hence we can conclude that Natural selection , mutation, genetic drift and gene flow are all mechanisms of Evolution and can change allele frequencies in populations

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What is the function of glycoproteins?

O to detect bacteria and other foreign bodies outside of the cell

O to actively carry specific ions or molecules into the cell

O to serve as identification for the cell

O to allow specific ions or molecules to pass freely

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Answer:

Glycoproteins are molecules that comprise protein and carbohydrate chains that are involved in many physiological functions including immunity. Many viruses have glycoproteins that help them enter bodily cells, but can also serve to be important therapeutic or preventative targets.

Explanation:

this is the correct answer happy

What is the coloured ink indicator? Can anyone explain me its function? i really need help​

Answers

Answer:

Bioindicators are species, groups of species or biological communities whose presence, abundance and biological conditions, in real ecosystems or through the use of laboratory toxicity tests, to make inferences about the quality of the environment.

True/False: In a neuron at rest, the concentration of sodium ions is 14 times higher outside the cell than inside the cell.

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Answer:

true

Explanation:

The sodium and chloride ion concentrations are lower inside the cell than outside, and the potassium concentration is greater inside the cell. These concentration differences for sodium and potassium are due to the action of a membrane active transport system which pumps sodium out of the cell and potassium into it.

the type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only.

Answers

Explanation:

A single parent reproduction is called Asexual reproduction

Asexual reproduction is a form of reproduction in which the number of chromosomes or the fusion of gametes is not altered.

What is asexual reproduction?

The whole gene pool of their single parent is inherited by the children that are produced by asexual reproduction from either unicellular or multicellular organisms.

With asexual reproduction, just one parent is necessary, two parents participate in sexual reproduction, which results in children with distinct genetic makeup.

A diploid zygote is created during sexual reproduction when two haploid gametes combine during fertilization, budding is an example of asexual reproduction.

Therefore, with asexual reproduction, just one parent is necessary.

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The kind of gene whose product interacts with other nucleotide sequences to affect their transcription or translation is a _____ gene.

Answers

Answer:

constitutive gene.

Explanation:

i went to 6th grade

Create a new way to purify water

Answers

Answer:

boil

Explanation:

answer: boil it
explainition:make hot water

Which part of the plant cell does photosynthesis occur? Please help

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Answer:

Photosynthesis occurs in the chloroplast of the plant cell.

Explanation:

in the gel electrophoresis lab, you determined the ________ of three different dna samples.

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In the gel electrophoresis lab, you determined the genotype of three different DNA samples.

Gel electrophoresis is a process that allows you to separate fragments of DNA based on size. You place different size fragments of DNA into a gel, then apply current to the buffer surrounding the gel, the DNA will travel through the gel but move at different speeds based on the different fragment sizes. Larger fragments of DNA will move slower than smaller fragment sizes.

Let consider two different alleles:

the bigger allele -- Athe smaller allele -- a

The bigger allele happens to contain a restriction site that is allowed to be cleaved by a restriction enzyme while the smaller allele has a mutation in the restriction site that means that it will not be recognized and cleaved by that same restriction enzyme.

Let us remember that the person will have two copies of this gene and can be:

H0m0zygous dominant AAh0m0zygous recessive aaheterozygous Aa

An individual with h0m0zyg0us AA only have versions of the gene that will be cut by the restriction enzymes, each allele producing a small fragment of DNA and a medium-size fragment of DNA

An individual with the genotype aa only has the version of the gene that does not have the restriction site and therefore does not get cut by the restriction enzyme. The DNA sample from this individual will have a single larger fragment of DNA.

When you isolate DNA from heterozygous Aa, half of the DNA isolated has the allele with the restriction site that gets cut into two fragments while the other half will have the allele that does not have the restriction site and remains whole when a restriction enzyme is added.

Therefore, we can conclude that in the gel electrophoresis lab, you determined the genotype of three different DNA samples.

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