Answer:
All multicellular organisms use cell division for growth and the maintenance and repair of cells and tissues. Cell division is tightly regulated because the occasional failure of regulation can have life-threatening consequences. Single-celled organisms use cell division as their method of reproduction.
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In multicellular organisms cell division is important for growth and survival, if one cell dies it is replaced by another.
What is cell division?Cell division is a fundamental process in the development, maintenance, and repair of cells and tissues in all multicellular animals.
Cell division is the process through which single-celled organisms reproduce. Our bodies need to make new cells and allow for the death of existing cells in order to expand and flourish.
Our body would never be able to make new skin cells to treat rashes from the road or grow a fingernail back if our cells were unable to divide and produce new cells.
Therefore, every time during growth cell division is playing a major role in the life of an organism.
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If I were measuring the pH at varying distances along a stream to test the impact on pH of the factory upstream. I would choose to measure the water above the factory which would represent which part of an experiment (control, independent, or dependent) Circle one.
Answer:
Dependent variable
Explanation:
The dependent variable in an experiment is the variable that the experimenter measures in an experiment. The dependent variable responds to changes made to the independent variable.
In this case, the pH of a stream is being measured at varying distances. If one is to measure the pH of the part of water above the factory, the pH being measured represents the DEPENDENT VARIABLE in the experiment.
You notice that some of your plants are growing at different heights. You want to know if the amount of water affects the growth of the plants and decide to construct an experiment. Your hypothesis states, "If a plant gets more water, then the taller it will grow". Identify the INDEPENDENT VARIABLE A) Amount of water the plants are given B) Plant height (growth) C) Amount of sunlight OD) Type of soil
Answer:
A is the correct answer
Answer:
A
Explanation:
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what is the model below DNA or RNA.
How do you know?
Answer: DNA has a double helix while RNA shouldnt
Starch is too large to cross the selectively permeable membrane and must be broken down into simpler molecules
before it is transported to other cells. To do this, starch-digesting enzymes called amylases are formed in the
endoplasmic reticulum (ER) and are transported from cell to cell.
Which of the following best describes the mechanisms by which these enzymes would be transported from the cell
and into a new cell?
O A vesicle from the ER will pass through the plasma membrane via exocytosis, and will then be transported to a
new cell via phagocytosis.
O The enzymes will diffuse across the plasma membrane, and then form a vesicle in the extracellular matrix that will
be engulfed by the new cell via pinocytosis.
O The enzymes will pass through a channel protein to leave the cell, and then form a vesicle in the extracellular
matrix that will be engulfed into the cell via receptor-mediated endocytosis.
A vesicle from the ER will fuse with the cell membrane and release the contents into the extracellular matrix via
exocytosis, and then the plasma membrane will engulf the enzymes via receptor-mediated endocytosis.
Answer:
here
Explanatio
Answer:
D. A vesicle from the ER will fuse with the cell membrane and release the content in to the extracellular matrix via exocytosis an dthen the plasma membrane will engulf the enzyme via receptoe mediated endocytosis.
Explanation:
EDGE 2020 AP BIO
The half-life of uranium-328 is about 4.5 billion years. After four half-lives have passed, what fraction of the original sample will be left?
Uranium-238 decays very slowly with a half life of 4.5 billion years. what percentage of a sample of uranium-238 would remain after 13.5 billion years?
The mass of Uranium halves every 4.5 billion years, so 13.5 billion years= 3 half-lives.
[tex]M=M_{0}[/tex] × [tex](\frac{1}{2} )^n[/tex]
Is the equation that describes the decay, where [tex]M^0[/tex] is the initial mass and [tex]n[/tex] is the number of half-lives passed.
So if 3 half-lives have passed:
[tex]M=M_{0}[/tex] × [tex](\frac{1}{2} )^3[/tex]
[tex]M=M_{0}[/tex] × [tex](\frac{1}{8} )[/tex]
[tex]M= \frac{1}{8} M_{0}[/tex]
So there will be 1/8 of the original mass left after 13.5 billion years, or 12.5% of the mass left.
Is there a systematic relationship between period and radius for the planets? How do you know this?
Answer:
We suggest the existence of a correlation between the planetary radius and orbital period for planets with radii smaller than 4 R⊕. Using the Kepler data, we find a correlation coefficient of 0.5120, and suggest that the correlation is not caused solely by survey incompleteness.
Explanation:
How does a hot day affect enzyme activity during photosynthesis?
Answer:
At higher temperatures, more collisions occur so the rate of reaction increases. However, extremely high temperatures disrupt the shape of the active site, which will reduce itsactivity, or prevent it from working. Theenzyme is now denatured . Enzymestherefore work best at their optimum temperature.
HELP PLEASE!!!!!!!!!!
Answer:
130 s or 2 min and 10 sec
Explanation:
[tex]x \: = vt[/tex]
260 = 2t
t = 130 sec
Answer:
2 min 10 s
Explanation:
Simply use unitary method.
Spiderman flies 2km in 1s.
For 1km, its 1/2 s.
For 260 km, it takes 1/2 *260 s
=130 s
The distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the
The distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the genes.
What is gene regulation?Genes are responsible for the synthesis of protein molecules in the cell.
All the cells of a living organisms contain the same sequence of genes, however, they differ in the way they are expressed.
This makes cells exhibit different characteristics in the same living organism.
Therefore, the distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the genes.
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opinion about dispersal and adaptation allow species to persist in changing environment!
Answer:
Explanation:
Specialized structures found in the cytoplasm of the cell are called:.
Answer:
Cytoplasm is composed of specialized structures called cytoplasmic organelles. Cytosol is the liquid matrix of the cytoplasm. The organelle is suspended within this liquid.
what role do trees play in the forest
Answer:
Trees play the part of taking in the carbon dioxide that we breathe out and changing it into oxygen so we can breathe it, they alos provide homes for different types of animals.
Hope this helps!
write about life span in details
Answer:
Life Span;The the period between birth and natural death of an organism is called life span.Life span varies from less than one day to more than 4000 years. Life span are not related to size or complexity of the organisms.Crows and parrots are of equal size. Crow has a life span of only 15 years while parrot lives for about 140 years.Similarly, Mango tree lives for about 200 years while Peeepal (Ficus religiosa) has a life span of about 2500 years.Banyan tree (Ficus bengalensis) spreads over a very large area but does not live beyond 500 years.
-TheUnknownScientist 72
Which of the following describes the ways organisms are interconnected through there feeding patterns?
A. Food chain
B. Tropic level
C. Food web
D. Consumer chart
PLEASE HELP
Hemophiliacs have trouble clotting their blood after injury. They have malfunctioning
platelets
white blood cells
red blood cells
hemoglobin
Answer:
Platelets
Explanation:
Platelets in the blood help clot the blood to start the process of healing a wound.
A cell that uses an organic carbon source and obtains energy from light would be called a:.
Answer:
Photoheterotroph
What energy storing molecule(s) are produced by the Krebs Cycle that go to the Electron Transport Chain?
A) ATP
B) ATP and NADH
C) FADH2 and ATP
D) NADH and FADH2
Answer: B
Explanation:
This breaks down the pyruvic acid to carbon dioxide.
This produces 2 ATP and 6 NADH, for every glucose molecule entering glycolysis. The Krebs cycle takes place inside the mitochondria. The Krebs cycle produces the CO2 that you breathe out.
How does levels of organization relate to a video about helping peoples brains?
Answer:
Organs and Organ Systems. After tissues, organs are the next level of organization of the human body. An organ is a structure that consists of two or more types of tissues that work together to do the same job. Examples of human organs include the brain, heart, lungs, skin, and kidneys.
Explanation:
Levels of organization helps us (people) to classify the different types of interactions that occur in the environment
The rabbit population in an ecosystem has grown past it's carrying capacity. What are two things that may happen naturally to bring the rabbit population back under control and how would these things control the population? (Must be at least 2 COMPLETE sentences
Answer:
One of the two things that could bring its population back down is lack of food, This is because due too the boom of the rabbit population their food sources will be eaten at a much faster rate until it overtime runs out. Another one is more predators, because of more rabbits more predators will be drawn too the area and help with population control by eating/killing them.
Explanation:
The idea that each living species has descended with changes from other species over time is called.
Answer:
Theory of Natural Selection
What is the scientific method!? will do brainliest hurry.
Answer:
It is a system for conducting a scientific investigation
Explanation:
When wondering why something happens it first starts out with a question and then it becomes a scientific investigation so that's why it is a system or way of conducting a scientific investigation. Continue reading furthur for more info.
It is also a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
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explain
why you SHOULD NOT drink salt water if stranded at sea.
Answer:
Seawater is toxic to humans because your body is unable to get rid of the salt that comes from seawater. Your body normally gets rid of excess salt by having the kidneys produce urine, but it needs freshwater to dilute the salt in your body for the kidneys to work properly.
Answer:
The salt water will make you go lose your mind,and it will dehydrate you.
DNA is directly inherited from an organism's parents, via their gametes, which are produced by the process of ____________________. Thus, if a person has phenylketonuria, they have inherited genetic information that has lead to the production of a dysfunctional protein, specifically a(n) _________________ that normally breaks down phenylalanine.
DNA is directly inherited from an organism's parents, via their gametes, which are produced by the process of Gametogenesis. Thus, if a person has phenylketonuria, they have inherited genetic information that has lead to the production of a dysfunctional protein, specifically a(n) enzyme that normally breaks down phenylalanine.
What is phenylketonuria?Phenylketonuria is a rare genetic disease characterized by the presence of a mutation responsible for altering the function of an enzyme in the body responsible for converting the amino acid phenylalanine into tyrosine, which leads to the accumulation of phenylalanine in the blood, which in large concentrations is toxic to the human body.
With this information, we can conclude that DNA is inherited directly from the parents of an organism, through its gametes, which are produced by the process of Gametogenesis. So, if a person has phenylketonuria, they have inherited genetic information that led to the production of a dysfunctional protein, specifically an enzyme (n) that normally breaks down phenylalanine.
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A group of scientists determines that a mitochondrial DNA sequence shared by two species has a constant mutation rate. The sequences of mitochondrial DNA for the two species are shown below. Species A: GACTGGGCATTA Species B: GACCGGACATTA Based on this information, which of the following best explains the difference in the DNA sequence between the two species? Species A and B probably share the most recent ancestor because they only differ by three mutations. Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. Species A and B probably have distinct ancestors because they have many differences in mutations. Species A and B are closely related because they differ by five mutations in their DNA sequence.
Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. It is likely due to sequence homo-logy.
Whta are mutations?A mutation is any alteration in the nucleotide (DNA) sequence of the genome of a particular organism.
The linear order of nucleotides and their differences (mutations) can be used to infer homo-logy between two species.
In this case, there are only two different nucleotides in these sequences, thereby sequence homo-logy indicates a likely common origin.
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Answer: Species A and B have fewer differences between DNA sequences means that fewer mutations occurred.
Explanation:
Took the test and got it right
5) During which part of the water cycle is energy absorbed by water?
Answer:
hope this helps you!!!!!
compounds that contain both carbon and hydrogen atoms
Answer:
CH4
Explanation:
Combining hydrogen and carbon produces a group of organic compounds called hydrocarbons. Depending on the specific molecular formula, there can be many different types of hydrocarbons, such as the fuels propane and octane. The simplest hydrocarbon is methane, which has the chemical formula CH4.
A mutation occurs during protein synthesis. How will the protein produced be affected? A. Since the mutation causes a new code for a better amino acid, the protein will still function normally. B. Since the mutation causes a new code for the same amino acid, the protein will still function normally. C. Since the mutation causes a new code for a better amino acid, the protein will be more powerful while performing its function. D. Since the mutation causes a new code for the same amino acid, the protein will be more powerful while performing its function.
Answer:
A mutation during protein synthesis may not affect the protein since the mutation causes a new code for the same amino acid, the protein will still function normally.
Explanation:
Protein synthesis depends on the transcription of DNA to RNA, and on the sequence of nucleotides in the chain, determining the triplets or codons that encode a specific amino acid.
In protein synthesis, when a mutation alters the codon, changing one nucleotide for another, it is possible that the mutation does not alter the amino acid and the protein functions correctly. This is because an amino acid can be encoded by several codons, as occurs with leucine, which is encoded by CUU, CUC, CUA and CUG.
The other options are not correct because one mutation does not give better amino acids or more powerful proteins.
En una situación experimental, tras permanecer en ayunas, tres personas ingieren: la primera (A) una ración de celulosa, la segunda (B) una ración de glucosa y la tercera (C) una ración de almidón. Compare la rapidez con la que suba la glucemia (nivel de glucosa en sangre) de las tres personas. Razone la respuesta.
Answer:
La respuesta correcta es: "El orden de rapidez en el sube la glucemia es el siguiente: (B) una ración de glucosa, (C) una ración de almidón y (A) una ración de celulosa".
Explanation:
La rapidez a la que sube el nivel de glucosa en la sangre depende del alimento que estemos ingiriendo. En este caso, el ingerir una ración de glucosa será lo que aumente el nivel de glucemia más rápidamente dado que no requiere ningún procesamiento digestivo. En segundo lugar será el almidón, el cuál debe ser degradado por la enzima amilasa para tener acceso a la glucosa. En último lugar será la celulosa, dado que no tenemos las enzimas necesarias para digerirla y se requiere la ayuda de microorganismos para hacerlo.
What are two ways that different species can divide up resources?
Answer:The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.
Explanation:hope this helps happy hallowen
Please tell me what the correct answer is