Answer:
D
Explanation:
The answer is D threshold frequency depends on the work function of a metal
what definition goes with what cell?
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▹ Answer
See below.
▹ Step-by-Step Explanation
Genes - parts of the DNA which control the traits of an organism
DNA - molecule that carries the genetic instructions for all living organisms. Found in the chromosome.
Nucleus - stores the cell's hereditary material or DNA
Chromosomes - Thread-like structures that are found in the nucleus of a cell that contains DNA.
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Dandelions flower at any time after the seeds have
germinated and the plants are mature. Which term best describes this kind of plant?
A. Short-day plant
B. Nonflowering plant
C. Long-day plant
D. Day-neutral plant
Answer:
a short day plant
Explanation:
the Dandelion only needs a little bit of sunshine but a lot of darkness
(Short Day Plant: a plant that only needs 12 or less hours of sunshine)
Use this link to read about the tundra biome, then answer the question provided. Describe animal interactions that affect populations in the tundra ecosystem.
Answer:
Animals that are interact in tundra ecosystem are Owls, foxes, wolves, polar bears, caribou, lemmings, and hares.
Explanation:
Animals that are found in tundra ecosystem have some special adaptation to survive the extreme cool temperature. this ecosystem consist of producer, herbivores and carnivores. Owls, foxes, wolves, and polar bears are carnivores which are present in low population while caribou, lemmings, and hares are herbivores which present in large number. These herbivores are the food of carnivores. And these herbivores feed on grasses present in tundra ecosystem.
Answer:
Animals have adapted to the harsh weather conditions and long winters of the tundra.
Animals migrate to eat insects that live there year round.
Many animals in the tundra hibernate during the long, cold winter months.
Animals are most active in the short summer as the snow melts and shallow wetlands form.
Explanation:
Consider aerobic cellular metabolism from the beginning to end. What is the sequential order of the metabolic processes that starts with glucose and results in the production of carbon dioxide, water, and ATP?
Explanation:
This starts with substrate level phosphorylation(glycolysis) in the cytosol of cytoplasms.Two ATPs are needed for phosphorylation of glucose.With eventual formation of 4 ATPs with 2NET GAIN ATPs,NADH+,and Pyruvate.
The Pyruvate reacts with co-enzyme A to form Acetyl coA-This is the bridge reaction or link reaction.
The Acetyl Co-A diffuses into the mitochondria where it combines with oxaloacetate to form citrate,the latter form Alpha ketoglutaric succinic,fumate,malate and back to oxaloacetate.The cycle of events is called the Kreb's Cycle.
Net of 2ATPs are formed,co-enzymes NADH+ and FADH2 ,water molecules,and Co2 are produced.These takes place in the mitochondria.
Then the NADH+ and FADH2 takes the hydrogen ions into the inner mitochondria where Hydrogen is split into electron and Protons.This forms the beginning of oxidative phosphorylation.
The electrons are transmitted by the carrier proteins to form the electron transport chains,which provide the PMF. The latter pumps the protons across the walls of mitochondria into the intramembrane space.
The high concentration of the protons produce the elecrochemical gradients which make the protons to diffuse back into the matrix. it is the changes in the elctrochemical gradients that supply the energy needed by ATPase enzymes for synthesis of ATPs. A total of 28ATPs are produced in oxidative phosphorylation.
Answer:
The total ATPs produced in the sequence of glycolysis pyruvatre,Co-enzyme A, kreb's Cycle and oxidative phosphorylation are 32ATPs per molecule of glucose splits in Glycolysis.
What time frame best describes when earthquakes occur?
a.Daily
b.Monthly
c.Yearly
d.Quarterly
Answer:
D
Explanation:
it mostly occurs quarterly
Quarterly time frame best describes when earthquakes occur.
What is earthquake and its causes?An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.
Earthquakes are the result of sudden movement along faults within the Earth. The movement releases stored-up 'elastic strain' energy in the form of seismic waves, which propagate through the Earth and cause the ground surface to shake.
Over 80 per cent of large earthquakes occur around the edges of the Pacific Ocean, an area known as the 'Ring of Fire'; this where the Pacific plate is being subducted beneath the surrounding plates.
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Which of the following processes takes place in the ribosomes of a cell
Answer:
protein synthesis
Explanation:
How is energy related to the change of state represented by the model
Answer:
How is energy related to the change of state represented by the model? Atoms gain energy as a solid changes to a liquid. If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.
Answer:
Atoms gain energy as a liquid changes to a gas.
Explanation:
Which function is performed by the ozone layer?
The Ozone Layer prevents Ultraviolet rays (from the Sun) from reaching Earth.
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Functions of: [A] nucleolus [B] plasma membrane.
Answer:
The nucleolus is considered as the brain of the nucleus. It occupies around 25% of the volume of the nucleus. It is mainly involved in the production of subunits which then together form ribosomes. Therefore, nucleolus plays an important role in protein synthesis and the production of ribosomes in eukaryotic cells.
The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Explanation:
Unit Test Review
Active
7
8
9
10
Parents with the genotypes AC and AB have a child. What are all the possible blood types of the child?
Acland
AB
ОО, АВ
A, AB, B
0.AB, A
7
8
9
10.
if AC and AB marry and want to give birth they will give birth to AB
Explanation:
My reason 4 that is AC and AB are almost like the same blood type. so it's either AC they give birth to or AB
What about fast music high temperature? How fast would your friends move and how close would they be to each other
Answer:
Temperature can be called the high speed temperature.
Explanation:
Temperature can be called a speed at which the music has been played. In temperature, there are three primary ways through that a person can communicate their music.
The BPM: The beat per minute, it indicates the beep or beat per minutes. This is responsible for high temperature and low temperature in music. The Italian Terminology: When people talks about the tempo, it is Italian words that has communicate about the tempo in music. Modern language: The modern language of music tempo is fast, slow, relaxed, moderate etc. The drummer may develop the solo and tempo establishes for others.The process shown in the diagram is called
The diagram shows one step in the process of protein
synthesis.
RNA polymerase
DNA strand
Answer:
its transcription
Explanation:
The process shown in the diagram is called transcription.
Transcription represents the first stage of protein synthesis. During this process, genetic information on DNA templates are transcribed to genetic codes in the form of messenger RNA.
The transcription process starts with the binding of the RNA polymerase enzyme to the promoter region of a gene. This causes the unwinding of the double helix structure of DNA in the binding region. Thereafter, the RNA polymerase starts synthesizing the complementary bases of the DNA template.
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I need help... Any kind soul please help me
Answer:
The answer is option B
I hope this helps you
If species are not changing, is it true to say that natural selection is not happening? Explain your reasoning
Answer:
true
Explanation:
ki
Answer:
Species are changing, natural selection is happening
Explanation:
There are many small, unnoticeable changes occuring in animals everday. Depending on whether these changes are helpful or unhelpful, the animal and its special features, will either be eliminated (through the process of natural selection) or embraced by others. If the traits are helpful, and therefore more dominant/attractive, it will ultimately lead to a split off, more dominant group of animals that all have the same adaptation, which allows the animals to out perform others.
**The reason you can't always see natural selection is because it's often a slow process. Also, if an animal's mental or physical traits change for the worse, the animal doesn't always live a full life, and doesn't reproduce. If the animal with the new traits doesn't reproduce (because the traits are not helpful and therefore unwanted), then that animal's traits are not allowed in the environment.**
Why do people sleep at night?
Answer:They sleep to get rest and when they’re tired. If they do not sleep enough they will not be active in the morning
Explanation:
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Cell division is preceded by two growth phases. Besides growth, both G1 and G2
Answer:
A
Explanation:
a. contain checkpoints that determine if the cycle will continue.
b. help move chromosomes to the new daughter cells.
c. produce more chromosomes before the cell divides.
d. grow and produce enough cytoplasm to fill two cells.
The correct answer would be that G1 and G2 contain checkpoints that determine if the cycle will continue or otherwise.
The cell cycle generally has three checkpoints that happen at G1, G2, and M phase of the cycle.
At G1 checkpoint, the integrity of the DNA of the cell is assessed to ensure that there are no damages and other conditions such as size and energy reserve are checked.
At G2 checkpoint, the cell is assessed for proper chromosome duplication to ensure that there are no mistakes or damages. The size of the cell and the amount of protein are also checked to ensure that the cell is ready for the active division phase.
At M checkpoint, correct attachment of the spindle fiber to the kinetochore of the chromosomes is checked. This checkpoint is also known as the spindle checkpoint and it happens towards the concluding phase of the metaphase stage.
The correct option is therefore, A.
Natural selection merged with the work of __________ in the 20th century to open up our understanding of evolutionary theory. a. Alfred Russel Wallace b. Gregor Mendel c. Jean-Baptiste Lamarck d. Erasmus Darwin e. Charles Lyell
Answer:
The correct answer is B) Gregor Mendel.
Explanation:
Gregor Johann Mendel was an 18th-century Genetic Scientist whose works, although revolutionary, didn't come to scientific limelight until the 20th century.
He was famous for his experiment with the Pea Plant. Through his experiments, he brought to record many of the rules of heredity also called the laws Mendelian inheritance.
Mendel died in 1884 aged 61, however, his work serves as the foundation for modern-day genetic science.
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Amanda gets protein at lunch by eating a chicken sandwich. How can Amanda’s body use the protein in the chicken to build protein in her cells?
Answer:
- The proteins in the chicken are broken down into amino acids, and the DNA in Amanda's cells uses those amino acids to build human proteins.
Explanation:
The body uses the protein taken by Amanda in the form of a chicken sandwich by breaking it down into the form of compounds called 'amino acids.' Amino acids are described as the substances that are responsible for the formation of proteins in the body. Thus, the DNA present in Amanda's body cells will use these amino acids to form human proteins. The longer chains of these amino acids help the body to ensure its proper structuring and functioning.
The proteins can be broken down into amino acids, and Amanda used her genetic material (DNA) to build proteins from these amino acids.
A protein is a long chain of amino acids linked by peptide bonds.During gene transcription, a specific fragment of DNA known as gene is used to create an mRNA, which is then used to create a protein by a process called translation.The linear order of nucleotides in DNA determines the order of amino acids in the protein sequence.In conclusion, the proteins can be broken down into amino acids, and Amanda used her genetic material (DNA) to build proteins from these amino acids.
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Biodiversity serves many ecological functions that are important to the
biosphere. Which of these is an example of such a function?
A. Removing atmospheric oxygen
B. Decreasing biological productivity
C. Increasing erosion
D. Recycling nutrients
Answer:
The answer should be D, recycling nutrients
Explanation:
One important aspect of Biodiversity is nutrient storage and cycling, performed throughout the ecosystem. Through atmostpheric elements in addition to those in the soil, this function maintains stability and life on the planet. A and D are wrong because they harm the environment, and B is incorrect because biological diversity is actually essential. Thus, D is correct.
Answer:D
Explanation:Recycling helps preserve biodiversity by limiting the amount of resources needed to make new products.
The heart is an example of which level of organization within an organism? cell organ tissue organ system
Answer:
organ!
Explanation:
what are the disadvantage of five kingdom classification
Answer:
Unicellular algae are kept in kingdom protista while multicellular algae are kept in kingdom plantea.
There is a diversity in kingdom protista.
There is no place for viruses.
Unicellular and multicellular organisms are kept far from each other.
Explanation:
Answer:Unicellular algae are kept in kingdom protista, whereas algae like multicellular organisms are kept in kingdom plantae. But similar organisms must be put togather...
There is no place for virus....
Similar organisms kept far from each other for example unicellular and multicellular algae...
Explanation:
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If a man has red-green color blindness, a sex-linked dominant trait, what is a possible genotype of his father? I. XR Y II. Xr Y III. XR XR IV XR Xr A. Only III B. I and III C. I and II D. I, III, and IV
Answer:
C
Explanation:
The possible genotype of his father is [tex]X^RY[/tex] and [tex]X^rY[/tex].
For sex-linked traits, an affected man always inherit the affected allele from the mother. The other chromosome, which is the Y chromosome is always from the father and this confers maleness on individuals.
The father of a man affected for a sex-linked trait can be affected for the same trait or otherwise. It does not have any bearing on the male child since the father only donates the Y chromosome to the male child.
Hence, in this case, the father can either be affected for the same trait ([tex]X^RY[/tex]) or be free from it ([tex]X^rY[/tex]).
The correct option is C.
c. After about half an hour, what
change, if any, would
you
expect to find in the cobalt
chloride paper placed on the
dorsal and ventral surfaces
of the leaf? Give a reason to
support your answer.
Answer:
It would melt
Explanation:
Because of the chemical
Why is classification of species important in light of a changing environment and changing ecosystem
Answer:
In order for scientists to keep track of endangered species and discover new species that are created due to the constant change.
How are Dobzhansky and Mayr's ideas about the origin of species similar to Darwin’s?
Answer:
evolution of new species is linked to environmental changes
Explanation:
might help
n
Which words and phrases in the sonnet indicate that the
tone is satirical? Select two options.
Albo
"My mistress"
"black wires"
"damask'd"
Read Shakespeare's "Sonnet 130."
My mistress' eyes are nothing like the sun;
Coral is far more red, than her lips red:
If snow be white, why then her breasts are dun;
If hairs be wires, black wires grow on her head.
I have seen roses damask'd, red and white,
But no such roses seel in her cheeks;
And in some perfumes is there more delight
Than in the breath that from my mistress reeks.
I love to hear her speak, yet well I know
That music hath a far more pleasing sound:
I grant I never saw a goddess go,
My mistress, when she walks, treads on the ground:
And yet by heaven, I think my love as rare,
As any she belied with false compare.
O "reeks"
"false compare"
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which words in the sonnet indicate that the tone is satirical ?
Answer:
"black wires"
"reeks".
Explanation:
William Shakespeare's "Sonnet 130" is a satire or mocking critique of the conventional sonnets that writers write. In this sonnet, he talks of a young lady who is short of conventional beauty ideals.
In the given lines from the sonnet, the poet/ speaker talks of his mistress whose "eyes are nothing like the sun" and he keeps on describing her features as opposed to one praising his lover. Rather, the speaker in this sonnet uses the negative descriptions in describing his mistress, like calling her hair "black wires" and her breath "reeks", far from the delightful perfumes that a lady is supposed to exude.
Thus, the two words that have a satirical tone in the sonnet are "black wires" and "reeks".
Answer: “black wires” and “reeks”
Explanation:
correct on edge 2020
Fe + O2 → Fe2O3 This equation is unbalanced. Which of the following is the correct balanced equation for this reaction?
Answer:
The balanced equarion is
4Fe + 3O2-------> 2(Fe2O3).
Explanation:
What happens to a population when the death rate decreases?
A. The birthrate usually increases.
B. The population size usually increases.
C. The population size usually decreases.
D. The birthrate usually decreases.
Answer:
B. The population size usually increases.
Explanation:
You can predict the growth rate by using this simple equation: growth rate = birth rate – death rate.
If the birth rate is larger than the death rate, then the population grows.
The population size will decrease.
If the birth and death rates are equal, then the population size will not change.
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B
Explanation:
A student described his new pet dog to his friends. Which part of his description identifies an acquired trait of his new
dog?
Answer:
You did not enter the description of the dog, which does not allow me to tell you specifically which characteristic of the dog is acquired, but I can help you. This is because the characteristics acquired are those that are not hereditary, that is, a stain on the dog's ear or a bruise on its paw, for example, are a type of acquired characteristics.
Explanation:
As you may already know, hereditary characteristics are those that are passed from parents to children, through genetic factors. However, not all characteristics that living beings have are inherited. This is because there are the acquired characteristics, which are created by the environment over time and which are not passed on to descendants.
If your dog went to the pet shop and received a pink paint on his coat there, this is an acquired characteristic. The same is true if your dog has a bruised foot, or if there is a spot on its ear that is not related to the dog's genes.
Answer:
were did he discrbed it
Explanation:
Explain what happens during deamination process
Answer:
Amino acids are broken down to form energy.
Explanation:
In situations of excess protein intake, deamination is used to break down amino acids for energy. The amino group is removed from the amino acid and converted to ammonia. The rest of the amino acid is made up of mostly carbon and hydrogen, and is recycled or oxidized for energy.