Answers
Answer:
Molecules move up the concentration gradient in facilitated diffusion, which requires ATP to be used as molecules naturally move from high to low concentration
Explanation:
: )
Molecules move down their concentration gradient in facilitated diffusion through channels of proteins.
For most molecules, movement through the membrane, with a significant rate, is only possible by the presence of transporter proteins (integral membrane proteins, which recognize substances with a high specificity, accelerating their translocation) or channels of proteins.
Transport proteins allow the facilitated diffusion of molecules, moving them along the free energy gradient (concentration gradient, charge gradient, or both), in the direction of thermodynamic equilibrium.
When a carrier protein binds to a solute, the protein changes shape in such a way that it carries the solute to the other side of the membrane.
Facilitated diffusion is similar to simple diffusion, since the molecules move from a region of higher to a lower concentration of solutes.
For example, by facilitated diffusion, chlorine ions move down their concentration gradient into the cell through chlorine channels.
Therefore, we can conclude that many molecules are assisted by transporter proteins for their diffusion through the plasma membrane, a process known as facilitated diffusion, where the molecules descend through their concentration gradient.
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Related Questions
Is the pratice of genetically modifying human cells ethical? Why or why not.
Answers
Answer:
Ethical limits are still not completely established.
Explanation:
Pros: Gene therapies are being developed for hereditary diseases that are transmitted through a single, specific gene.
Examples are some diseases of the blood and immune system, some types of blindness, or metabolic damage.
Cons: Because the procedures are very invasive and it requires a large number of animals to serve as guinea pigs.
The sequential series of nucleotide triplets that are positioned in the A site of the ribosome during translation. A. Primary structure B. Exons C. Promoter D. Reading frame
Answers
Answer:
The correct answer is D.
Explanation:
Reading frame is a sequence of codons determined by nucleotides that are read in groups of three from a specific translation start codon, that is, it is a linear sequence of codons or triplets in a nucleic acid. It is one of three possible reading alternatives of a nucleotide sequence of a series of triplets, this means that, in a double-stranded DNA molecule, there are 6 possible directions in which reading frames can be opened; three in the forward direction and three in reverse.
Which of these is an environmental benefit of converting to solar energy?
O A. an increase in the use of fossil fuels
O B. a decrease in air pollution
O C. an increase in the cost of energy
O D. a decrease in electrical energy production
Answers
Answer:
i think it's the first one
The answer is B. a decrease in air pollution.
Which of the following statements are accurate about Earth’s spheres?
SELECT ALL THAT APPLY.
A - earth’s spheres depend on each other
B - to maintain equilibrium, energy and mass is transferred between spheres
C - earth’s spheres support each other
Answers
Answer:
Option A, B and C.
Explanation:
The Earth spheres make up the components of the Earth and it comprises of both living and non living things.
The Earth spheres(hydrosphere, biosphere, atmosphere) are interconnected with each other. A change in a sphere can also in one way of the other influence change on the others. Interactions occur among the spheres I .e energy can be harness from one sphere to another.
For example birds can fly from biosphere to hydrosphere to obtain water. Their interactions cause or drive all the processes of the Earth which is an indication that they are connected to each other and react with each other.
Statements that are true as regards Earth’s spheres are;
A - earth’s spheres depend on each other
B - to maintain equilibrium, energy and mass is transferred between spheres
C - earth’s spheres support each other
There are four spheres that can be attributed to the Earth, and all these sphere are depend on each other. They are lithosphere, hydrosphere, atmosphere as well as biosphere. The lithosphere is the part that has solid rock, soil in it, to maintain equilibrium, there is usually transfer of mass and energy among the sphere.Therefore, all options are correct.
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Veterinarians who specialize in birds are often referred to as herp veterinarians.
(True)
(False)
Answers
Answer:
false
Explanation:
quizlet said so
Answer:
FALSE
Explanation:
If a mutation occurred resulting in a single nucleotide addition to the below DNA sequence, what do you suspect would happen?
Answers
⚠️⚠️ALOT OF POINTS MARKING PEOPLE AS BRAINLIST
What do you think the graph would look like if the hares took longer to reproduce (e.g. If it took 2 or 3 rounds to double the survivors)?
Answers
Answer: The blue line would probably be much smaller and have a lot less jumps.
Explanation: If it's taking longer for the hares to reproduce there would be less in hares in total as well as less overall survivors.
What do the dotted lines, indicated with the arrow, represent in the DNA model above?
The junctions of codons between individual strands
The bond between deoxyribose molecules and phosphates
The monomers that make up a polymer
The hydrogen bond between complimentary nucleotides
Answers
Answer:
The hydrogen bond between complimentary nucleotides.
how do you think the system used to organized where people live is similar to how your body is organized?
Answers
How many times would you expect a restriction enzyme that recognizes a 6 base palindrome to cut a 24000 base piece of DNA?
Answers
Answer:
Total number of expected cut = 6 (Approx)
Explanation:
Frequency of 6 base sequence = (1/4)⁶
Frequency of 6 base sequence = 1 / 4,096
Find:
Total number of expected cut
Computation:
Total number of expected cut = 24,000 (1 / 4,096)
Total number of expected cut = 5.8593
Total number of expected cut = 6 (Approx)
What part of the scientific method is this: Because human subjects are difficult to study, laboratory rats were used. One group of laboratory rats was given the artificial sweetener, and another group was not. All of the rats were given an identical diet and living conditions.
Answers
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
Answers
Answer:
A.Negative Growth
Explanation:
Which type of mining is likely the least harmful to the environment?
a. surface mining
b. placer mining
c. subsurface mining
d. none of the above
Answers
Answer:
Placer mining
Explanation:
Placer mining can be less damaging to the environment than surface mines, as the sediment is returned to the water after the minerals have been extracted.
The mining that is likely the least harmful to the environment is the placer mining that is present in Option B, water is used in placer mining to separate mineral particles from soil.
What is placer mining?Placer mining involves the extraction of minerals from riverbeds, streambeds, and other bodies of water, and this method involves the use of water to separate mineral particles from soil, while placer mining is generally considered to be less harmful to the environment compared to surface and subsurface mining, but it can still have negative impacts if not properly managed. For example, the use of mercury in the gold extraction process can lead to water pollution and harm to aquatic life.
Hence, the mining that is likely the least harmful to the environment is the placer mining that is present in Option B.
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Explain how fermentation is useful in the preservation of food products.
Answers
Answer: mold is used to make cheese.
Explanation:
mold is used to make dairy products such as yogurt and cheese.
Hope this was helpful.
Which statement about a catalyst is correct?
1) A catalyst slows down a chemical reaction.
2) A catalyst speeds up a chemical reaction.
3) A catalyst has no affect on a chemical reaction.
Answers
Answer:
choice 2
Explanation:
because the catalyst reduces the activation energy of the reactants so the reaction then requires lower energy to occur then the reactents reach that energy in shorter time so the reaction takes shorter time .
Tissue collections that carry out specific functions are called _________
A. Cells
B. Organs
C. Organ Systems
D. Organisms
Answers
Answer:
B. organs is the right one
Explanation:
brainliest plss!!!!!1
Answer:
B. Organs
Explanation:
Cells make up tissues. Tissues make up organs. Organs then make up organ systems, which make up organisms. Hope this helps!
One way bones are classified is by their shape. How would you classify the bones fractured by Mrs. Morgan?
Answers
Flat, long, short, and irregular are the classifications of bones based on their shape. Mrs. Morgan's humerus is a long bone, the occipital bone is flat, and vertebra is an irregular bone. ... Morgan's vertebra is fractured.
Bones are classified is by their shape are flat, long, short, and irregular are the classifications of bones based on their shape. Mrs. Morgan's humerus is a long bone, the occipital bone is flat, and vertebra is an irregular bone. Morgan's vertebrae is fractured.
What is bone?Bone has a connective tissue which has been metabolically active and the main function of the bone has to provide mechanical as well as structural support as well as perform movement, and protect important organs of the body.
The bone has been made up of the bone cells known as the osteocytes and extracellular matrix. The total number of bone of the human body contain has 206 bones including bones of spine, legs, arms, ribs, and skull.
Bones are made up of calcium and carbonate and they have bone marrow in which blood cells are produced. By nature bones came in category of living and they are active tissue .
There are several types of bones such as the flat bones, short bones, sesamoid bones, and long bones. The function of bone has to protect vital organs of the body.
Therefore, Bones are classified is by their shape are flat, long, short, and irregular are the classifications of bones based on their shape. Mrs. Morgan's humerus is a long bone, the occipital bone is flat, and vertebra is an irregular bone. Morgan's vertebrae is fractured.
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which sentence best describes the process of drawing conclusions based on the information in table
Answers
Answer:
Conclusions, like inferences, involve educated guesses about what information means, beyond what is stated directly.
Explanation:
Hope this helps.
How can plasmids differentiate species and can you tell by looking at it?
Answers
Answer:
Explanation:
In the event that you can recuperate enough DNA from a gel cut, you could attempt to think about the limitation condensations of the different species present in your examples. Naming the assimilation items with kinase and gamma-32P ATP may assist with expanding the affectability of recognition.
and no this is not copied :)
An 8 year old girl is brought to your office by her mother, who tells you that the girl has been complaining of a sore throat for 3 days. Thinking that the girl was developing a cold, she kept her daughter home from school with the hope that she would get better. She has become worse in the past day, however, developing a fever of 103 degrees F, a headache, and complaining of abdominal pain. As you examine her throat, you see that in addition to red and enlarged tonsils, that there are white patches on them, and that there are swollen lymph glands on both sides of her neck.
Answers
Answer:
she has Strep throat or something like that
Explanation:
the Severity of strep throat can vary from person-to-person. The common symptoms are as follows:
Sudden high fever
Mild soreness in throat
Redness in throat with white patches
Headache
Chills
Loss of appetite
Cervical lymphadenopathy (swollen lymph nodes in the neck)
Swollen tonsils
Difficulty in swallowing food or water
Pain when swallowing
Nausea and vomiting is seen in younger children
Answer: Acute otitis media.
Explanation: This question is based on the opening section of Pirozzo and Del Mar (2001). They specifically say that "Acute otitis media is a disease of infancy and early childhood defined by the presence of inflammation and fluid in the middle ear and accompanied by at least 1 sign of acute illness." You can find more information here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1275975/
what determines the physical and chemical properties of a mineral?
Answers
Answer: Determines the properties of a mineral by the composition and structure .In such as: : colour, taste, tenacity, magnetism, fracture, streak, specific gravity, [ amount of transparency and crystalline structure.
What two major events occur during meiosis that give the new cells genetic variation
Answers
Genetic variation is increased by meiosis
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase.
Some individuals can develop kidney failure after consuming fava beans. What is the biochemical rationale for this observation?A. A deficiency of glucose-6-phosphatase that resulted in failure to synthesize essential red cell membrane proteins.B. A deficiency of glucose-6-phosphate dehydrogenase that resulted in failure to maintain glutathione in a state that prevents destructive lysis of the red blood cell.C. A deficiency of transketolase that resulted in the failure to provide ribose for the DNA and RNA needed to repair red cells.D. A deficiency of transaldolase that resulted in the failure to maintain glycolysis in the red cells. E. A deficiency of sedoheptulose that resulted in the failure to maintain the integrity of the red cells.
Answers
The correct answer to the question is option B
A deficiency of glucose-6-phosphate dehydrogenase that resulted in failure to maintain glutathione in a state that prevents destructive lysis of the red blood cell.
The deficiency of Glucose 6 phosphate dehydrogenase is a genetic disorder,when certain foods are consumed,the deficiency symptom to the enzyme is triggered and one of such food is Fava beans.
in Fava beans, Vicine is found, and this Vicine is an alkaloid glycoside.
Vicine is an oxidant,and it is toxic by causing disease favisim in individuals.The individual being affected are the ones that have hereditary loss of the Glucose 6 phosphate dehydrogenase enzyme.
But favisim only occurs when Fava beans is ingested fresh, that is without cooking it.
Following this,there is the development of acute intravascular hemolysis within 4-24hours after the ingestion of the Fava beans,there might also be a fall in the hemoglobin content of the blood and this may result in fatal condition.
But in cases that are acute, that is case of hemolysis, blood transfusion is vital and also in the case is kidney failure, dialysis must be done.
The reason why blood transfusion is very necessary is because the blood transfused may not have red blood cells that are deficient of Glucose 6 phosphate dehydrogenase,also the cells can have normal lifespan in the blood circulation of the recipient.
This Glucose 6 phosphate dehydrogenase is vital because it is a metabolic enzyme of Pentose phosphate pathway and it is also important for the metabolism of red blood cells.It also gives red blood cells protection from oxygen species that are harmful and reactive.
Option A is a metabolic disease that is
inherited which results in accumulation of glycogen and fat in liver.
Option C is as a result of deficiency in thiamine and malnutrition.
Option D is as a result of mutation in transaldolase gene.
Option E is as a result of genetic mutation.
PLS HELP ASAP WILL GIVE BRAINLIEST Part A
Think of another common object around your house or school that you could use to model a cell. Describe the object. Based on its characteristics, does the object best model an animal cell, a plant cell, or a bacteria cell? Why?
Part B
Describe two advantages and two limitations of the model you selected.
There is no right or wrong answer
Answers
Answer:
Part A. Home phone, animal cell. It is in the same shape and cell pattern.
Part B. Two advantages are it's model and cell pattern, and two limitations are it's difference to the animal cell and it's limit on life.
Answer:
part A: maybe a squishy toy
Explanation:
Which of the following terms best describes the study of genes during the 1900s?
A. predictable
B. guarded
C. progressive
stagnant
Answers
What are three statements mentioned in the video that are included in the cell theory?
Answers
Answer:
1. all living things are composed of cells,
2. cells are the basic units of structure and function in living things.
3. new cells are produced from existing cells.
C personalities are organized and controlled. They take their time completing tasks accurately, like to research things thoroughly, and are always prepared. Because they put so much time and effort into everything they do, they hate to be criticized. They are perfectionists at heart and take even the smallest complaint personally. This makes them extremely difficult to confront. The best way to approach it is to focus on parts of the problem largely out of the C personality’s control or aspects of the problem they might not have considered. Make it clear that you appreciate all of their efforts and that you’re bringing something to their attention because it’s a variable that they need to have in the equation in the future. No matter what, don’t frame the conflict as a personal attack. If you do, the C personality will likely become resentful and go out of their way to avoid future interactions with you....!!!!!!
please help me with this question:)
Answers
Answer:
The answer is true
Please help !!!!!!
I need some to calculate this for me.
Pro Tip 1: To calculate the % of cells at rest (in interphase), divide the number of cells in interphase by the total # of cells in the slide (cells in telophase may look like they are almost 2 cells, but you can still count them as 1).
# of cells in interphase ÷ total cells = % of cells at rest
Pro Tip 2: To calculate the % of cells dividing (or mitotic index), add up the cells in prophase, metaphase, anaphase and telophase. Divide that number by the total # of cells in the slide.
# of cells in PMAT ÷ total cells = % of cells dividing (or mitotic index)
Answers
Answer:
INTERPHASE PROPHASE METAPHASE ANAPHASE TELOPHASE % of Cells at Rest (interphase)
% of Cells Dividing (Mitotic Index)
Normal Lung
13 cells 2 cells 2 cells 2 cells 1 cell 65% 35%
Cancerous Lung 6 cells 5 cells 3 cells 3 cells 3 cells 30% 70%
Normal Stomach 10 cells 3 cells 3 cells 3 cells 1 cell 50% 50%
Cancerous Stomach 5 cells 5 cells 4 cells 4 cells 2 cells 25% 75%
Normal Ovary 9 cells 5 cells 3 cells 1 cell 2 cells 45% 55%
Cancerous Ovary 3 cells 6 cells 5 cells 3 cells 3 cells 15% 85%
Explanation:
The answers are also down below in the chart if that helps you better make sense of them.
There are 20 cells in each column, to find the ones at rest we simply take the first number in the column and devide it by the number of cells (in this case 20) once we find the percent of cells at rest, we subtract from 100 to see the cells deviding!
Hope this helps another student along the way! :)
Good luck with your studies and have a fantastic winter break!
Which phrase best defines homeostasis
Answers
Answer:
maintaning the essential internal parameters relatively constant is the phrase that best describes the process of homeostasis.
SOMEONE PLZ HELP ME!!!!!!!!!!!!!