The plasma (cell) membrane
Answer:is composed of a bilayer of phospholipids.
Explanation:The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.
What is the frequency of the a1a2 genotype in a population composed of 20 a1a1 individuals, 80 a1a2 individuals, and 100 a2a2 individuals?.
The frequency of a1a2 genotype is a population is 0.4.
Formula to calculate the a1a2 genotype frequency is: -
[tex]\frac{a1a2 genotype}{total genotype}[/tex] = [tex]\frac{80}{20 + 80 +100}[/tex] = 0.4
Genotype- The word "genotype" refers to an organism's whole gene pool, or, in other words, the genetic make-up of that creature. The phrase can also be used to describe to the alleles, or different versions of a gene, that an organism carries in a more specific meaning.
Population- A population is described as a collection of people who belong to the same species and cohabit a certain region. In order to survive throughout time, individuals of a population frequently rely on the same resources, are susceptible to the same environmental restrictions, and affect the availability of other members.
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Suppose that zonosemata flies whose own wings had been clipped and reattached were attacked more frequently than untreated zonosemata flies. How would this result have affected the reliability of the other experimental results?.
The experimental groups that had wing surgery would have no results.
Surgery- The area of medicine that treats sickness or injuries through procedures. Surgery may entail physically altering human tissues and organs by cutting, abrading, suturing, or other means.
Tissue- Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. This may be abundant in some tissues and minimal in others.
Cells- The simplest form that can sustain life on its own and makes up all living things, including the body's tissues. The cell membrane, the nucleus, and the cytoplasm are the three primary components of a cell.
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Help...........................
The relationship between the single celled paramecium and the multicellular giraffe in terms of the cell theory is that both organisms are made of cells.
What is cell?In taxonomy, we often try to classify life. The classification of life often starts from the simplest to the complex levels of the organization of life. All the organisms that exists in the universe must falls somewhere into this strata of life. We know that the simplest unit of life is the cell. It is defined as the simplest independent unit of an organism.
According to the cell theory, all organisms are composed of cells and the cells that we have in existence are always derived from pre existing cells. The cells was first discovered by Robert Hooke as he was working with his crude compound microscope.
Now, since all organisms are composed of cells, the relationship between the single celled paramecium and the multicellular giraffe in terms of the cell theory is that both organisms are made of cells.
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The engineering design process is not linear process. in other words, it does not follow a set of order. Why?
To understand people, challenge assumptions, reframe problems, and create unique solutions for prototyping and testing, teams use design thinking, a non-linear, iterative method. Empathize, Engineering Define, Ideate, Prototype, and Test is a five-step process that can be used to tackle challenges that are unclear or unidentified.
Engineering design is, in other words, not a linear process but rather a highly creative and dynamic one marked by problem formulation, quick iterations, and practical solutions. The design process is circular rather than linear; insights obtained in one stage flow back into and influence changes in subsequent stages16. Program is created to fill a need.
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is the use of genes for treating human genetic disorders. a. recombinant dna technology b. genomics c. genetics d. pharmacogenomics e. gene therapy
Is the use of genes for treating human genetic disorders d. pharmacogenomics .
What is pharmacogenomics ?Pharmacogenomics is the study of how genes impact how a person reacts to medications. In order to create powerful, secure treatments that may be administered based on a person's genetic profile, this area integrates genomics (the study of genes and their roles) and pharmacology (the science of drugs).
Although many medications on the market today are "one size fits all," they don't all operate in the same manner. It can be challenging to determine who will respond well to a treatment, who won't respond at all, and who will encounter unwanted side effects (called adverse drug reactions). In the US, adverse medication responses constitute a major factor in both hospital admissions and fatalities.
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Choose the best description for prokaryotic cell.
A) has a nucleus; found in multicellular organisms
B) has no nucleus; found in unicellular organisms
C) has no nucleus; found in multicellular organisms
D) has a nucleus; found in unicellular organisms
Hi
Answer:
B) has no nucleus; found in unicellular organisms
Explanation:
Prokaryotes, such as bacteria, have a single cell without a nucleus and lack organelles, so prokaryotic cells don't have a nucleus and lack most organelles that would usually be found in eukaryotes.
Therefore, the answer is B) has no nucleus; found in unicellular organisms.
In eukaryotes, but not in prokaryotes, ribosomes find the start site of translation by __________.
In eukaryotes, but not in prokaryotes, ribosomes find the start site of translation by scanning along the mRNA from the 5′ end.
Translation- A cell's method of producing proteins by using the genetic information contained in messenger RNA (mRNA). The information included in the mRNA, which is created by replicating DNA, instructs the cell on how to assemble proteins from amino acids.
mRNA- The cytoplasm is where the mRNA that is produced in the nucleus connects to the ribosomes after being transferred from the nucleus. The nucleotide sequence of the mRNA serves as a guide for the assembly of proteins on ribosomes. The cytoplasm receives a "message" from the nucleus through mRNA.
The given question is incomplete, find below the complete question,
Q. In eukaryotes, but not in prokaryotes, ribosomes find the start site of translation by ____________________________.
Select one:
a. binding directly to a ribosome-binding site preceding the initiation codon.
b. scanning along the mRNA from the 5′ end.
c. recognizing an AUG codon as the start of translation.
d. binding an initiator tRNA
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Juan received a class assignment to write about organisms that live in extreme environments. While doing research online, he found an image that showed microbial bodies thriving in hot springs. The organisms lacked a nucleus or defined organelles. Which organisms can he possibly find in such conditions?
Answer:
Archaea
Explanation:
Most archaea species are epiphytes (for example, thermophiles or halophiles), which means they live in harsh environments where few or no other organisms can survive.
One reason cells divide is that
One reason cells divide is that Growth and Replacing damaged or dead cells.
For your body to expand and for bodily tissue like skin to continuously regenerate itself, cells must divide. When a cell splits, the outer membrane pulls inward more and more until the newly developing cells separate from one another. Usually, this procedure divides the original (parent) cell into two new (daughter) cells. Because food and oxygen must be transported to the internal components through the cell membrane, cells are constrained in size A cell's outer cannot keep up with its interior as it expands because the interior expands more quickly than the exterior.learn more about cells divide here: https://brainly.com/question/796780
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Please help with this question
The 2 ways that nitrogen is "fixed" are by plants and bacteria.
What is nitrogen fixation?Nitrogen fixation is a process in which there is a combination of nitrogen with oxygen or hydrogen to form oxides or ammonia that can be incorporated into the biosphere.
Fixation can occur in two ways: abiotically by means of electrical discharges or combustion and biotically by the action of microorganisms thanks to bacteria or through symbiosis by means of some plants. This process is known as biological nitrogen fixation.
Therefore, we can confirm that the 2 ways that nitrogen is "fixed" are by plants and bacteria.
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Which box represents a carbon sink that holds carbon compounds for the shortest period of time?
A
B
C
D
Answer:
A
Explanation:
A box represents a carbon sink that holds carbon compounds for the shortest period of time. So, the correct option is A.
What is Carbon sink?A carbon sink is defined as a natural or otherwise that accumulates and stores some carbon- containing chemical compound indefinitely and thereby removes carbon dioxide from the atmosphere. The two most important carbon sinks are vegetation and the ocean where soil is an important carbon storage medium.
A carbon sink is describe as something which absorbs more carbon from the atmosphere than it releases – for example, plants, the ocean and soil. Carbon dioxide can move to plants to be stored as glucose much more rapidly than in sedimentary rocks and fossil fuels where carbon compounds are most likely to be retained for the shortest time in vegetation.
Thus, A box represents a carbon sink that holds carbon compounds for the shortest period of time. So, the correct option is A.
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30 POINTS
This graph is displaying the exact same data you used to create your graph, but the graph looks much different.
If the data is the same, why does the graph look different? What might an indiscriminate viewer conclude about the temperature from looking at this graph?
The graph looks different because the plotted data are in a single line.
The conclusion that could be made by an indiscriminate viewer is that the temperature remained stable from the year 1880 to year 2018.
What is temperature?Temperature is defined as the degree of hotness or coldness of a body surface which can be measured in °C or °F.
The temperature of a body surface changes with time depending on the effects of the immediate external environments.
From the plotted graph above, the same data is being collected over a long period of time.
The graph appears different because the temperature of the surface remained stable from the year 1880 to year 2018.
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Semipermeable cell membranes are made of phospholipids that form a bilayer. What major benefit does this arrangement of the membrane provide to the cell?.
A bee is carrying pollen from one flower to another. The pollen contains sperm and the flower contains an egg. This is an example of which form of reproduction?
The example where a bee is carrying pollen from one flower to another (pollen contains sperm and the flower an egg) makes reference to sexual reproduction.
What is sexual reproduction?Sexual reproduction is a type of reproduction that involves the fusion of two (2) gametic germinal cells, in this case the egg cell and the sperm cell, which form a zygote (diploid cell).
In conclusion, the example where a bee is carrying pollen from one flower to another (pollen contains sperm and the flower an egg) makes reference to sexual reproduction.
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2. What is the portion of DNA that contains information for the physical expression of a trait or characteristic?
Joints are caused when a rock fractures along numerous flat surfaces
True
False
Answer:The answer is true
Explanation:please give brainliest if right.
Which experiment would be best for testing the hypothesis that the enzymes did not perform as expected because the temperature was too high?
Compare the differences in the amount of lightness between different batches of blue jeans made at various temperatures while using the same enzyme concentration.
How would you define temperature?Temperature is an indication of hotness or coolness on a variety of scales, such as the Celsius and Fahrenheit systems. Heat energy will logically go from a hotter (something with a high temp) to a colder (body with such a lower temperature) according to temperature (one at a lower temperature).
What four different temperatures are there?The most widely used method of measuring temperature in the United States and several Caribbean regions is the Fahrenheit scale.Celsius Scale.Kelvin ScaleRankine ScaleTo know more about Temperature visit:
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Which activities occur during prophase II? Check all that apply.
DNA condenses to form chromosomes.
Each chromosome pairs up with its mate.
Spindle fibers form.
Chromosomes move to the opposite end of the cell.
The nuclear envelope disappears.
PLEASE TELL ME AS SOON AS YOU CAN :)
The following events occur during prophase II.
DNA condenses to form chromosomes.Spindle fibers form.The nuclear envelope disappears.In both mitosis and meiosis, the prophase is the first phase of cell division. When the cell enters prophase, DNA replication has already started after interphase. The chromatin reticulum condenses and the nucleolus vanishes during prophase, which are the key events. The chromatin, a combination of DNA and proteins found in the nucleus, condenses during prophase. The development of discernible chromosomes is caused by the coiling and tightening of the chromatin. One well-organized piece of DNA makes up each chromosome. Prophase is the first and longest phase of mitosis. Chromatin gathers into chromosomes and the nuclear envelope, which is the membrane that encloses the nucleus, disintegrates during prophase.learn more about prophase here: https://brainly.com/question/12828200
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Answer:prophase II
Explanation:
If the mitochondria and chloroplasts in eukaryotic cells resulted from endosymbiosis between various prokaryotes, what features should these organelles have?.
Answer: A plasma, membrane, DNA and ribosomes
Explanation:
of which macromolecule are membrane channel and pumps composed
Answer:
The macromolecules that forms pumps and channels in the cell membrane, allowing the entry and exit of molecules to the cell are protein.
Explanation:
Membrane integral proteins are a type of macromolecule attached to the structure of the membrane and have ends in contact with the cytoplasm and the extracellular medium.
These protein molecules can act as channels and transporters or pumps, to facilitate the passage of substances through the membrane. An example of transmembrane channels are ion channels, while a protein transporter is the sodium potassium ATP-ase pump.
Membrane proteins can also act as surface receptors and enzymes linked to the cell membrane.
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Which change resulted from the heating of the planets as they formed?
O Their masses increased.
O They lost most of their radioactive isotopes.
O Their structures differentiated into distinct layers.
O They started to revolve around the Sun.
The change that resulted from the heating of the planets as they formed are the structures differentiated into distinct layers.
What is a simple explanation of the Earth's creation?Around 4.5 billion years ago, when the solar system was still in its current form, gravity dragged spinning gas and dust in, creating Earth, the third planet from the Sun. Earth has a central core, a rocky mantle, and a solid crust, just like its sister terrestrial planets.
What elements molded our solar system?First of all, gravity is what pulls creatures to the surface of the Earth, keeps the planets in their orbits around the Sun, and is what creates planets, stars, and galaxies. Second, electromagnetic forces control how matter produces electricity and magnetism and reacts to them.
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I don’t know why it’s blurry
Answer:
Develop a testable question based on research or prior knowledge
Explanation:
Scientific Method.
What do elements of the same period in the periodic table have in common?
Answer:
A period in the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor.
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The sun rotates.
A. at different speeds along its sphere.
B. around Earth once per year.
C. every 31 days.
D. once per year.
Answer : D
Explanation:
Records show that 19 million firearms were sold in the U.S. during 2020. Assume the average
firearm sold for $500 and the Pittman-Robertson Act collected an 11-percent excise tax. How much money was raised for conservation from the sale of firearms during 2020? Be sure to show your work.
50 points
The amount of money that was raised for conservation from the sale of firearms is = $8,455,000,000
Calculation of total cost of firearmsThe number if firearms sold in U.S. during 2020= 19,000,000
The cost of an average firearm = $500
The tax collected per firearm by Pittman-Robertson Act = 11%.
That is, 11% of $500
= 11×500/100
= $55 for every firearm
The total cost of 19million firearms
= 19,000,000 × 500
= 9,500,000,000
The total tax collected form 19 million firearms,
= 55 × 19,000,000
= 1,045,000,000
The amount raised for conservation;
= 9,500,000,000 - 1,045,000,000
= $8,455,000,000.
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Answer:
To calculate the amount of money raised for conservation from the sale of firearms during 2020, we'll follow these steps:
Step 1: Calculate the total revenue generated from firearm sales.
Total revenue = Number of firearms sold * Price per firearm
Total revenue = 19,000,000 * $500
Total revenue = $9,500,000,000
Step 2: Calculate the amount of excise tax collected.
Excise tax = Total revenue * Excise tax rate
Excise tax = $9,500,000,000 * 0.11
Excise tax = $1,045,000,000
Therefore, the amount of money raised for conservation from the sale of firearms during 2020, based on the given information, is $1,045,000,000.
Identify two other life functions that are essential for the survival of all
living organisms (like birds). Explain how each of the two life functions
you identified maintains homeostasis.
Answer: Two life functions performed by all living organisms are nutrition and respiration. Identify two other life functions that are essential for the survival of all living organisms. Explain how each of the two life functions you identified maintains homeostasis.
Explanation:
Which organism commonly causes food poisoning by consumption of foods containing excessive populations of organisms or preformed enterotoxin?
According to the given statement Bacillus cereus It is the cause of two different kinds of food poisoning.
What does the term "etiological agents" mean?Etiologic agents include those mentioned in 42 CFR 72.3 as well as any other agent that causes or may cause a severe, incapacitating, or deadly disease. Etiologic agents are living microorganisms or their toxins.
How many different etiological agent categories are there?The five classes of pathogenic organisms include viruses, bacteria, fungus, protozoa, and helminths (worms).
What are the modes of transmission for the etiologic agent?Direct touch, droplets, a vector like a mosquito, a vehicle like food, or the airborne route are all possible modes of transmission. The vulnerable host has several portals of entry such as the mouth or a syringe.
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When blood sugar levels are too high, the pancreas helps to maintain balanced blood
sugar levels by releasing _______ This hormone helps the cells and liver take in extra sugar to lower the blood sugar levels back to their set point.
A. Glucogon
B. Oxygen
C. Glycogen
D. Insulin
Answer: My best guess would be Insulin
Explanation:
Insulin signals body cells to take up glucose from the blood, which returns blood glucose levels back to normal.
HELP
Which question can be used to evaluate reliability of a source
A Who is paid to do this research
B Is the author American
C is this data challenged by anyone in the public
D is this research relevant to me
Answer:
The answer is A.
Explanation:
the person who is paid obviously make the source reliable.
The question that can be used to to evaluate reliability of a source is : "is this data challenged by anyone in the public?"
Option (C) is correct.
It assesses the credibility of the data by considering whether it has been scrutinized, questioned, or challenged by members of the public or experts in the field. When multiple individuals or experts have reviewed and found the data to be accurate and valid, it increases the likelihood that the source is reliable.
Question C addresses a crucial aspect of source reliability. If data or information presented in a source is being actively challenged or critiqued by individuals in the public or experts within the relevant field, it indicates a healthy level of scrutiny and engagement with the content. A reputable and reliable source should be open to evaluation and discourse within the community it pertains to.
Challenging data indicates that it has undergone a peer-review process, which enhances the source's credibility. It's important to distinguish valid challenges from baseless ones, as a well-supported challenge reinforces the reliability of the source, while unsubstantiated claims may not.
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The complete question is:
A. “Who was paid to do this research?”
B "Is the author American?"
C “Is this data challenged by anyone in the public?”
D “Is this research relevant to me?”
20 points! The paper is connected to this x.x
The membrane is composed of phospholipids that will form a lipid bilayer through which products pass through it.
How is the plasma membrane composed?The plasma membrane is made up, among other components, of phospholipids that will generate a phospholipid bilayer due to its amphipathic nature. Due to its conformation, different molecules will not find it easy to pass through the plasmatic membrane into and out of the cell, for this reason, the cell will have types of transport to be able to allow the passage of substances.
Within these forms of transport, we find endocytosis, which is when the cell enters bulky materials inside the cell, exocytosis, which is when it takes bulky materials out of the cell, is the facilitated diffusion by which molecules pass without spending energy thanks to its concentration gradient and active transport in which the channels need ATP to be able to pass the molecules through it since it is done against its concentration gradient.
Therefore, we can confirm that the membrane is composed of phospholipids that will form a lipid bilayer through which products pass through it.
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