Answer:23 chromosomes
Explanation:
To take human being for example,
There is 46 chromosomes in a human cell, and half is from father, and the other half is from mother. We call the chromosome is a pair. We write it 2n= 46.
In the meiosis I, the chromosomes is 1n=23.
seeds from a single sexually reproducing plant are harvested and later planted under identical conditions. what results should be expected?
if the mass is 90g and the volume is 100 ml what is the density
Answer:
168.56
Explanation:
Suggest why cells need to differentiate
Answer:
The lower the pressure, the lower a liquid's boiling point is. That's why water boils much faster at the top of a mountain than it does at the bottom. In space, there is no pressure. So the boiling point could easily drop to your body temperature.
mark me as a brainlist plz.
Where does the plant originally the energy to make glucose?
Answer:
the sun and their leaves
Explanation:
LEAVES
Explanation:
During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose.HELP!
Of the following, what is the most important for ATP production?
A) amount of sunlight
B) carbon dioxide
C) concentration water concentration
D) glucose concentration
E) oxygen concentration
Answer:
I THINK ITS A
im not sure tho
In eukaryotes, gene expression is regulated mostly by _____.
Answer:
Gene expression in eukaryotic cells is regulated by repressors as well as by transcriptional activators. Like their prokaryotic counterparts, eukaryotic repressors bind to specific DNA sequences and inhibit transcription.
Explanation:
In eukaryotes, gene expression is regulated mostly by transcription factors.
What are transcription factors?Transcription factors are proteins that bind to DNA in the promoter region of a gene, and they play a critical role in controlling when and to what extent a gene is expressed.
They can either activate or repress gene expression by promoting or inhibiting the recruitment of RNA polymerase. Transcription factors are themselves regulated by a variety of signals, including hormones, growth factors, and other external cues, as well as by feedback loops and other regulatory mechanisms within the cell.
Ultimately, this complex interplay of factors allows eukaryotic cells to precisely control which genes are expressed, when they are expressed, and to what degree, enabling them to respond to changing internal and external environments.
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A rocket flies up into the air and returns back down to its exact spot. The displacement of the rocket is zero
true or false
Answer:
False ................
Escribe las partes de la célula:
Doy corona
Answer:
A. MEMBRANA PLASMATICA
B. NUCLEO
C. RETICULO ENDOPLASMATCO
D. APARATO DE GOLGI
E. LISOSOMA
F. MICROFILAMENTO
G. MITOCONDRIA
H. RIBOSOMA
I. CENTROSOMA
The _______ variable is what the experimenter manipulated/changes to see the effect
inn
recut
Answer:
independent variable
Explanation:
Which of the following is a common characteristic of prokaryotic cells? Select all that apply.
A. plasma membrane
B. nucleus
C. flagella
D. cell wall
Nucleus is an exception in a prokaryotic cell. Thus, option A, C and D are correct.
What are the characteristics of a prokaryotes?Prokaryotes are microscopic and primitive cells. Their nucleus is not well developed.
Prokaryotes lack cell organelles like mitochondria, endoplasmic reticulum, Golgi body etc in their cell structure.
Prokaryotes are simple in assembly and are therefore unicellular. A single cell performs all the functions in the body.
Prokaryotes have single chromosome present in their structure. Their DNA is found in the cytoplasm.
Prokaryotes have cilia and flagella for locomotion.
Prokaryotic organisms are found extensively everywhere on earth. They have unique ability to survive in the harsh environments.
Prokaryotes are beneficial in many ways:
Carry out nitrogen fixation.Important for human gut for the absorption of vitamin B12.Helpful in fermentation process.Important in bioremediationTherefore, prokaryotes are important in many ways to the ecosystem.
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Describe and discuss the amino acids. Include information on what they are, their structure, and how many there are. Using your best grammar, write 3-5 sentences.
Answer:
molecules that combine to form proteins
Explanation:
amino acids are molecules that combine to form proteins. amino acids and proteins are the building blocks of life. when proteins are digested or broken down amino acids are left
Amino acids are building blocks of proteins. They contain an amino group, carboxyl group, and side chain. There are 20 types, each with unique properties influencing protein structure and function.
Biochemical functions depend on amino acids in proteins. The R-group, amino group, and carboxyl group are on each amino acid. This side chain gives each amino acid chemical properties that impact protein structure and function. Twenty typical amino acids make up proteins.
They vary in size, shape, charge, and hydrophobicity. Peptide bonds generate polypeptide chains that fold into three-dimensional forms, determining a protein's function. The structures include simple helices and complex globular shapes. Complex and diverse, proteins perform various tasks in living things due to the diversity of amino acids and their interactions.
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What happens to solid particles as they are heated?
Explanation:
When a solid is heated the particles gain energy and start to vibrate faster and faster. ... Further heating provides more energy until the particles start to break free of the structure. Although the particles are still loosely connected they are able to move around. At this point the solid is melting to form a liquid.
they vibrate when they are next to something they jump do it untill its really hot and it mealts
how does the plasma membrane contribute to the structure and function of the cell?
Answer:
The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. ... The plasma membrane consists of a lipid bilayer that is semipermeable. The plasma membrane regulates the transport of materials entering and exiting the cell.
A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it moves hazardous materials out of the cell and carries nutrients into the cell.
What is a cell membrane?All cells' interiors are protected from the outside world by a biological membrane called the cell membrane. A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it maintains a constant environment inside the cell, and that membrane serves a variety of purposes. One is to move substances out of the cell that are toxic as well as nutrients into the cell.
Glycerophospholipids, molecules made of glycerol, a phosphate group, and two fatty acid chains, are what make up cellular membranes, including plasma membranes and internal membranes.
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3. Hail and Lightning are common in floods. True or false
Answer:
I would have to say false. Because hail is cause by frozen rain, and at that point, it would be a blizzard.
Read the scenario.Joe, a reporter for Main Street News, covered a campaign rally for Jiya Patel, who is running for county commissioner. While at the rally, he interviewed the candidate and some audience members as his research for the article. He then wrote an article describing the rally, the candidate’s platform, and the reasons her supporters believe that she is the best person for this job. When he finished, he turned his article in to his editor. As the editor reviews this story, he sees a public report on campaign donations and learns that Joe has made a sizeable contribution to Patel’s campaign.What is the most ethical action for the editor to take?
Answer:
explain to the reporter that the newspaper cannot run the story because of perceived bias based on donations, so the article is being reassigned
Explanation:
Answer:
Explain to the reporter that the newspaper cannot run the story because of perceived bias based on donations, so the article is being reassigned
Explanation:
Correct on Edge 2022! Also, having a donation added means he already supports this, so writing a story about it isn't fair due to his previous bias.
After first exposure to an antigen, about how long does it take for antibodies to reach a detectable level?
2. What could explain the significant increase in antibodies to non-Lyme disease antigens (blue line)?
3. Lyme disease patients who are treated with antibiotics quickly usually do much better than those who are treated later. Why do you think this is the case?
4. Why doesn’t the Antibodies in Lyme Disease Antigens (orange line) decrease after the first immune response, compared to non-Lyme Disease Antigens (blue line)?
5. Professor Dr. Utpal Pal studied the Borrelia burgdorferi bacterium at the University of Maryland. Dr. Pal found that Lyme disease is caused by your immune system. When the body is infected with Lyme disease, it overreacts causing inflammation in the joints. Although antibiotic resistance has not been observed for B. burgdorferi, create an argument defending the control of antibiotic use to the public. Analyze the data in the graph below by answering the following questions. Be sure to use complete sentences.
After first exposure to an antigen, it can take about three weeks for antibodies to reach a detectable level. The body will react to disease by creating antibodies and testing their effectiveness against the unknown antigen.
Antibodies are the body's way of fighting off foreign threats. Also known as immunoglobulin, they detect and attack pathogenic bacteria and viruses. These antibodies detect a protein that is unique to the surface of the pathogen called the antigen.
At times, we can see an increase in antibodies for one disease, for example, Lyme disease, in the presence of non-Lyme disease antigens. This is often due to antigenic variation, which is a method used by pathogens to mask their respective antigens. There are also general use antibodies that will increase in reaction to any pathogen.
As with any illness, a patient who receives treatment sooner will fare better than those whose treatment is delayed. This is due to the fact that earlier treatment with antibiotics will allow the body to fight off the infection before the bacteria can reproduce further.
After the first immune response, antigen-specific antibodies will remain for some time to provide the body with "immunity" to the pathogen, while general-purpose antibodies will return to a base value.
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What is the smallest family in the phylum Aves?
The smallest family in the phylum Aves is the bird family.
What is Phylum?Phylum may be defined as a prevalent taxonomic classification that classifies above class and below kingdom, identical to the division in botany.
The phylum Aves are generally adapted to fly. Hence, it consists of birds or organisms who have the ability to fly in the environment and are classified into this category with a lot of exceptions like bats which belong to mammals.
Therefore, the smallest family in the phylum Aves is the bird family.
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At this point, 6 carbon dioxide molecules have
been released (2 from the link reaction and 4
from the Krebs cycle). Why does this make
sense?
Glucose has combined with oxygen to make carbon dioxide.
Glucose has 6 carbons and has been completely broken down by this stage.
The 6 carbon dioxides are reactants that will be used to make ATP.
These 6 carbon dioxides are converted to oxygen by respiration.
All of these.
Glucose has combined with oxygen to make carbon dioxide and Glucose has 6 carbons and has been completely broken down by this stage.
Glucose react with oxygen to make carbon dioxide, water and energy in the form of ATP. Glucose has 6 carbon atoms which react with oxygen that is completely broken down into three products such as carbondioxide, water and energy in the form of ATP by the process of cellular respiration so we can conclude that carbondioxide gas is produced by breaking down of glucose molecules from the Krebs cycle that is a stage of respiration.
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movement of gas across membranes occurs by which mechanism?
Answer:
The basic mechanism of gas exchange is diffusion across a moist membrane. Diffusion is the movement of molecules from a region of greater concentration to a region of lesser concentration, in the direction following the concentration gradient.
Hope this helps!
which term describes the decrease of the male hormone testosterone in the aging male?
¿Cuáles son las funciones vitales que realiza la célula y por qué son importantes?
Doy corono
Es la criatura viviente más simple que se conoce, lo que significa que es capaz de realizar las tres funciones vitales, que son la nutrición, la interacción y la reproducción. Consta de dos partes que son la membrana plasmática y el citoplasma.
Proporcionan estructura al cuerpo, ingieren nutrientes de los alimentos, convierten esos nutrientes en energía y realizan funciones especializadas. Las células también contienen el material hereditario del cuerpo y pueden hacer copias de sí mismas. Las celdas tienen muchas partes, cada una con una función diferente.
Why is the fatty acid of the lipids often reffered to as a hydrocarbon chain?
Answer:
The chain includes hydrogen and carbon.
Explanation:
They all have a central carbon atom with four components around it.
Hope this helps!!
which is a flap of tissue that folds down to close off the entrance to the larynx and trachea when you swallow?
which joints are synostoses that have distinct, interlocking, usually irregular edges that increase their strength?
SUTURES are synarthrotic joints that have distinct, interlocking, usually irregular edges that increase their strength. Sutures are joints between the bones of the skull.
Synarthroses are immovable joints (synarthrosis) in which bones are separated by a thin layer of fibrous connective tissue.
A suture is a narrow synarthrotic joint that occurs between specific bones of the skull.
These main sutures of the skull include metopic suture, coronal suture, sagittal suture, and lambdoid suture.
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which part of human heart carry oxygenated blood........
Answer:
Left Atrium
Left Atrium Hope this helps :)
Any information about Bird DNA?
trying to find stuff but no one tells me anything...
Answer:
hmm sounds like the FBI is hiding something from you
Explanation:
Answer:
look it uo
Explanation:
with that question you are better off just looking it up
8. Explain why mammals have specialized excretary organs but plants do not have.
Answer:
(Hope this helps can I pls have brainlist (crown)☺️)
Explanation:
They consume food and they have much higher metabolism. That means that more waste products are produced. Plants can use much of the waste produced and it is in fact raw material. Animals don't normally produce their own chemicals from scratch like plants normally do so they can't just recycle the waste. They need to remove it. About the only waste plants need to get rid of is excess oxygen produced during the day. That is actually three reasons but recycling is related to plants not consuming but making their own chemicals from scratch. In a way it pretty much comes down to one main reason.
OI 1. Trình bày khái niệm và mục đích của việc nhân giống thuần chủng. Là mục đích của việc lại giống.
answer:
what is that mean??
hii everyone i have question again which substances made gages
What is the question???
18. Explain how large, carbon-based molecules are formed
Answer:
All three types of molecules are the result of carbon's ability to form four covalent bonds. Carbon chains can bond with carbon rings to form very large, complex molecules. These large molecules can be made of many small molecules that are bonded together.
Explanation:
Hope it helps