Answer:
The potassium equilibrium potential would increase, meaning that more K+ would be leaving the cell.
Explanation:
Let us assume that the only ion transported through the cell membrane is K+. We need to use the Nernst equation to know the destiny of the ion.
Nernst equation:
E = 58 millivolts/z. [Log₁₀ (C-out/C- in)
Where,
• E = Equilibrium potential
• 58 millivolts/z = Constant
• z = Ion charge + positive or negative symbol
• C-out = Ion concentration out of the cell
• C-In = Ion concentration inside the cell
By convenience, in the Nerts equation, the bigger concentration value corresponds to the numerator and the smaller concentration value to the denominator.
Now let us see the provided values,
• z = Ion charge + positive or negative symbol ⇒ +1 ⇒ K+
• C-out = Ion concentration out of the cell ⇒ 5 mEq/L
• C-In = Ion concentration inside the cell ⇒ 150 mEq/L
E = 58 millivolts/z. [Log₁₀ (Ion in/Ion out)
E = 58 millivolts/+1. [Log₁₀ (150 mEq/L / 5 mEq/L)
E = 58 millivolts (Log₁₀ 30)
E = 58 millivolts (1.477)
E = 85.67 millivolts
85.7 mV is the absolute value of equilibrium potential.
E = 58 millivolts/z. [Log₁₀ (Ion in/Ion out)
E = 58 millivolts/+1. [Log₁₀ (150 mEq/L / 3.5 mEq/L)
E = 58 millivolts (Log₁₀ 42.85)
E = 58 millivolts (1.63)
E = 94.65 millivolts
94.7 mV is the absolute value of equilibrium potential.
If the extracellular concentration of potassium is changed from 5.0 to 3.5 mEq/L, there will be an increase in the membrane potential from 85.7 to 94.7 mV. The increase in the equilibrium potential will result in more potassium diffusing out of the cell, turning the cell interior less positive than before.
The potassium equilibrium ability might increase, which means that greater K+ might be leaving the cell.
Let us expect that the handiest ion transported via the cell membrane is K+. We want to apply the Nernst equation to recognize the future of the ion.
Nernst equation:
[tex]E = 58 millivolts/z. [Log₁0 (C-out/ -in)[/tex]
Where,
E = Equilibrium ability.58 millivolts/z =Constant.z=lon charge + advantageous or terrible symbol. C - out = Ion awareness out of the cell. C-ln= ion awareness in the cell.For convenience, withinside the Nerts equation, the larger awareness fee corresponds to the numerator and the smaller awareness fee to the denominator. Now allow us to see the supplied values,
[tex]z=lon charge + effective or terrible ⇒+1 ⇒ K+\\C - out = lon awareness out of the cell ⇒5 mEq/L\\C-ln= lon awareness withinside the cell ⇒150 mEq/LE = 58 millivolts/+ 1.[Log 10 ( 50mEq / L / 5mEq/L)\\E = 58millivolts (Log30)\\E = 58 millivolts (1.477)[/tex][tex]E = 85.67 millivolts\\85.7 mV is absolutely the fee of equilibrium capability.\\E = 58 millivolts/z. [Log10 (lon in/lon out)\\E =58 millivolts/+1. [Log 10 (a 100and 50 mEq/L / 3.five mEq/L)\\E =58 millivolts (Log10 42.85)\\E = 58 millivolts (1.63)\\E = 94.65 millivolts94.7 mV is absolutely the fee of equilibrium capability.[/tex]
What happens if the extracellular attention of potassium is modified from 5.0 to 3.5?If the extracellular attention of potassium is modified from 5.0 to 3.5mEq/L, there can be a growth withinside the membrane capability from 85.7 to 94.7 mV. The growth withinside the equilibrium capability will bring about extra potassium diffusing out of the cell, turning the cell indoors much less high quality than before.
Thus it is clear from this that the potassium equilibrium potential is affected.
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What is data that is not directly collected or observed by the scientist called?
Answer:
Data that is not directly collected or observed by the scientist
It means that the data that was collected by someone else that is not the scientist, it may include censuses, surveys, data bases or other sort of information.
Explanation:
Problems that animal species overcome by their dispersion
killing other animals.........................
When the tetrads are formed
during meiosis, what is the
benefit of crossing over?
A. The chromosomes double in number.
B. The chromosomes exchange genetic
information.
C. The chromosomes are reduced by half.
Answer:
B. The chromosomes exchange genetic information.
Explanation:
Crossing over of tetrads during meiosis is very important for the exchange of genetic information.
This step of meiosis allows for each chromosome to be genetically unique and distinct from the others, creating genetic variation.
Crossing over does not double the number of chromosomes or reduce the number. The number of chromosomes stays the same.
So, the correct answer is B. The chromosomes exchange genetic information.
. Calculate the 3 difference between food chain and food web
FOOD CHAIN AND FOOD WEB
A linear pathway showing the flow of energy . A multitude of networks showing the flow of energy
An organism of higher level trophic feeds on a specific organism of lower trophic level An organism of higher trophic level has access to more members of a lower trophic level.
Has no effect on the adaptability and competitiveness of organisms. Has a role in improving the adaptability and competitiveness of an organism.
Answer:
A linear pathway showing the flow of energy . A multitude of networks showing the flow of energy
An organism of higher level trophic feeds on a specific organism of lower trophic level An organism of higher trophic level has access to more members of a lower trophic level.
Has no effect on the adaptability and competitiveness of organisms. Has a role in improving the adaptability and competitiveness of an organism
Explanation:
What could explain how
antibiotics harm bacteria without
hurting the human taking them?
What is the first stage of metamorphosis?
Answer:
larve
Explanation:
innner metamorphasis started
Answer:
Larva Pls mark brainliest
Explanation:
The development of DNA technology is bringing profound changes to science, agriculture and healthcare. Provide one example of a DNA technology and provide at least one advantage and one example of a concern or problem associated with its use.
Answer:
The CRISPR-Cas9 genome editing system can be used to edit genes and correct mutations associated with inherited diseases. However, this technology also has the potential to edit genes in germline cells in order to irreversibly modify the human species and the natural evolution of life
Explanation:
The CRISPR-Cas9 (Clustered regularly interspaced short palindromic repeats and CRISPR-associated protein 9) system is a natural prokaryotic defense system used by bacteria to defend against invading DNA. In the laboratory, the CRISPR-Cas9 system has been repurposed to create a versatile genome-editing tool that allows us to modify the genome of mammalian cells in a targeted fashion. The CRISPR-Cas9 is a simple gene-editing tool that consists of a single guide RNA (sgRNA) that guides the Cas9 enzyme to the exact genomic location where Cas9 needs to make a cut, which is then repaired by different DNA repair mechanisms. During DNA repair, nucleotides can be replaced and/or deleted, thereby producing desired genomic modifications. The CRISPR-Cas9 has an enormous potential to repair mutations in genes associated with inherited genetic disorders and cancer (i.e., oncogenes might be reversed in vivo by using this technology). However, the CRISPR-Cas9 genome editing system is also a subject of concern due to its dual use. For example, this technology can be used to modify the genome of germline cells by inducing mutations that can be passed across generations, thereby irreversibly modifying human DNA and altering the normal course of evolution.
Which development would most reflect Karl Marx's belief in the economic
system that he predicted would replace free markets?
A. Governments eliminate all taxes on wealthy corporations.
B. Workers share all the profits generated from a factory.
C. Companies begin to sell their products in overseas markets.
D. Businesses refuse to hire workers who demand high wages.
Answer:
D. Businesses refuse to hire workers who demand high wages
Explanation:
Karl Marx's predicted that if businesses refuse to hire workers with high wages according to their value, this can lead to revolution and can destroy or replace the free markets.
In biological systems, there are several membrane transport systems responsible for the passage of ions like Na+ and K+.
a. True
b. False
Answer:
The correct answer is: a. True.
Explanation:
There are several membrane transport systems responsible for the passage of ions like Na+ and K+.
Cell membranes are semipermeable, which means they can regulate which molecules may and cannot flow through them. Some molecules may simply drift in and out of a cell (this is called simple diffusion), while others require specific structures to enter and exit (this type of diffusion is called facilitated diffusion), and still, others require an energy boost to pass the cell membrane (this is known as active transport).
Both simple diffusion and facilitated diffusion are types of passive transport: they happen without the energy boost that ATP gives, unlike active transport.
In passive transport, molecules follow their chemical gradients and travel through the most concentrated compartment to the less concentrated one to equal the concentrations. In active transport, on the other hand, the cell makes an effort to enter or exit ions against their chemical gradients and this is done particularly to maintain said gradients (they are required for the correct functioning of the cell).
Sodium and Potassium are two of the most important ions when it comes to maintaining these gradients: sodium is very concentrated in the outside of the cells (the extracellular compartment), while potassium is highly concentrated in the intracellular compartment. These differences in concentrations are maintained thanks to the Na+/K+ pump, a form of active transport. Apart from the Na+/K+ pump, these ions go through the membrane through passive transport as well, without requiring energy.
In an experiment, a small dialysis bag is filled with a 20% salt solution. It is placed in a
beaker filled with a 40% salt solution. Assuming that water can pass through the
small pores of the dialysis bag, whereas the large salt molecules cannot, what will
happen to the size of the dialysis bag?
Answer:
The bag will get smaller
Explanation:
Osmosis can be defined as the process of diffusion or movement of water molecules across a semipermeable membrane from an area of higher concentration of water (i.e., lower concentration solution) to a lower concentration of water. For example, in cells, there are specialized pores called 'aquaporins' which are membrane proteins that form channels to transport water molecules by facilitated diffusion. In this case, the outside of the bag has a higher salt concentration than inside, thereby water molecules will move by facilitated diffusion through pores from inside to outside the bag.
1) What is the function of the plasma membrane? (5pts)
2) How does high and low temperature affect a plasma membrane's fluidity? (5pts)
3) How does passive transport differ from active transport? (5pts)
4) What are the three main types of passive transport? Describe each of them. (5pts)
5) List the three types of tonic solutions and describe which way water moves in each one. (5pts)
Answer:
1.Plasma membrane is a semi permiable layer present in a plant cell.it allows only selected substances to pass in and out of the cell.
All of the members of a particular species that live in one area are called a(an):
A) biotope
B) community
C) ecosystem
D) biosphere
E) population
Answer:
Population
Explanation:
population- all the members of one species in a particular area.
A student wants to know how the number of geese in a study area affects the number of parts in their songs. She
performs an experiment and records the data in a table.
Which two terms describe this type of data?
A. Qualitative
B. Theoretical
C. Empirical
D. Quantitative
Answer:
B. Theoretical
D. Quantitative
Explanation:Because she is not very sure of the answer but is aware of her solution
A geneticist finds that a strain of bacteria to produces a non-functional sigma factor. Which among the following steps in transcription would most likely be first affected?
A.Assembly of RNAP onto the DNA strand
B.Identification and binding of RNAP on to the promoter sequence
C.Conversion of open initiation complex to closed initiation complex
D.Synthesis of RNA after the formation of open initiation complex
Answer
D
The transcription factors and RNA polymerase form a complex called the transcription initiation complex. This complex initiates transcription, and the RNA polymerase begins mRNA synthesis by matching complementary bases to the original DNA strand.
There are 2 types of cells in nervous tissue, what are their roles?
How are growth and development dinstinct from each other
Answer:
Growth is a physical change in ones body size that can be easily observed.
Development is the ability to do things complex, challenging, and difficult.
WOmbats are what type of mammals?
Answer:
Los wombats son marsupiales que solo se encuentran en Australia, pero estos curiosos y simpáticos animales de piernas cortas y rechonchas rara vez son tenidos en cuenta como otros animales nativos como los koalas y los canguros, que parecen ser más mediáticos.
Explanation:
what is the full form of ATP?
Answer:
ATP stands for Adenosine triphosphate, an organic molecule responsible for driving nearly all cellular mechanisms and processes in living organisms. Hence, biologists often refer to ATP as the “energy currency of the cell.”
Step One: Anatomical Developments
Match the following anatomical developments (A-J) with the number where they occur on the Hominin Anatomy Phylogeny (below).
A. decreased prognathism, moderate sized molars, phalanges not curved (derived), Found in South Africa, still relatively small brain (-450cc)
B. canine reduction, lower jaw tooth row shape intermediate between parallel and parabolic, have footprints explicitly displaying bipedal
patterns, curved phalanges
C. further brain expansion, decrease in teeth size, decrease in brow ridges, flattening of the face, mental eminence, vertical forehead
D. megadontia complex (huge molars, jaws, and chewing muscles), slight increase in cranial capacity (410-530cc)
E. femur and pelvis indicate capable of bipedalism
F. brain expansion, megadontia reduction, smaller less projecting face, smaller jaws
G. occipital bun common, retromolar space, robust postcrania, relatively short limbs
H. further brain expansion, reduction in teeth, face, and jaws, increased brow ridges, increased body size
1. loss of honing complex, obligate bipedalism, curved phalanges (primitive), parallel tooth row shape
J. foramen magnum position indicates likely capable of bipedalism
A. Hoomo ergaster & Hoomoo erectus
B. Hoomoo erectus
C. Hoomoo ergaster
D. Hoomoo Habilis
E. Hoomoo ergaster and Hooomo erectus
F. Hoomo Habilis
G. Hoomoo erectus
H. Hoomoo ergaster
I. Hoomoo ergaster and Hoomoo erectus
J. Hoomoo erectus
Homooo erectus fossils are found in China and Indonesia. They have widest part of brain case at cranial base.
They have reduced post canine and decrease jaw size. They have shorter forelimbs and are bipeds.
Homooo habiliss are dimorphic species which have long forelimbs and shorter forelimbs.
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Which of the following words is generally used to describe what managers do as opposed to what leaders do b) Organize c) Inspire O d) Innovate
If you're running away from a bear, A) both your liver cells and my leg muscle cells will be running glycolysis. B) both your liver cells and my leg muscle cells will be running gluconeogenesis. C) your liver cells will be running gluconeogenesis and your leg muscle cells will be running glycolysis. D) your liver cells will be running glycolysis and your leg muscle cells will be running gluconeogenesis.
Answer:
C) your liver cells will be running gluconeogenesis and your leg muscle cells will be running glycolysis.
A forest was cleared and turned into a field of organic soybean plants. Which of the following most likely occurred?
A. The variety of plants and animals both increased
B. The number of insects increased
C. The number of insects decreased
D. The number of plant species increased
When a forest is cleared, biodiversity decreases. The correct answer is option C: The number of insects decreased
Biodiversity refers to different species of plants and animals in a habitat. We will all agree that the biodiversity in a forest ecosystem is much higher than the biodiversity in a field of organic soybean plants.
There are less species of organisms in the field of organic soybean plants.
Therefore, the variety of plants and animals both decrease.
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what is a benefit of genetic engineering?
Answer:
Some benefits of genetic engineering in agriculture are increased crop yields, reduced costs for food or drug production, reduced need for pesticides, enhanced nutrient composition and food quality, resistance to pests and disease, greater food security, and medical benefits to the world's growing population.
Answer:
all benefits:
More nutritious food. increased crop yieldsreduced costs for food reduced need for pesticidesgreater food securityI hope that this helps :)
If you compare the histone modifications at the imprinting center on the maternal and paternal chromosomes, you would expect to see ____________ on the maternal chromosome and ____________ on the paternal chromosome.
a. activating marks like H3K9 acetylation; silencing marks like H3K9 methylation
b. silencing marks like H3K9 methylation; activating marks like H3K9 acetylation
Answer:
b. silencing marks like H3K9 methylation; activating marks like H3K9 acetylation
Explanation:
Genomic imprinting is an epigenetic phenomenon that leads to parent-of-origin-specific monoallelic expression, thereby genes under imprinting are differentially expressed depending on their parental origin. Genomic imprinting involves DNA methylation, histone modification such as histone 3 lysine 9 methylation (H3K9) and non-coding RNA regulatory epigenetic pathways, which act together to silence one parental gene form or 'parental allele'. Maternal imprinting occurs when the maternal allele is silenced (usually caused by methylation of the maternal allele), whereas paternal imprinting occurs when the paternal allele is silenced (methylation of the paternal allele). Moreover, H3K9 acetylation is connected with active promoters (gene transcription). The imprinted genes are generally grouped in genomic regions called imprinting centers (ICs) that regulate gene expression according to the parental origin.
what are three characteristics of life that archaea bacteria have?
Answer:
The common characteristics of Archaebacteria known to date are these:
(1) the presence of characteristic tRNAs and ribosomal RNAs.
(2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat.
(3) the occurrence of ether linked lipids built from phytanyl chains.
Which of the following is NOT a function of behavior?
A. To produce ATP.
B. To find food.
C. To reproduce.
D. To avoid predators.
Answer:
A to produce ATP as you are subconsciously producing ATP and you can not control it
Explanation:
To find food, to reproduce, and to avoid predators all are the functions of behavior except the production of ATP. Thus, the correct option is A.
What are the functions of behavior?Behavior is the range of actions and manners which are made by individuals, systems or artificial entities in a given environment. This can include other systems or organisms as well as inanimate physical environment.
The four main functions of behavior of an organism are attention, escape, access, and sensory needs. These four functions allow us to understand and categorize someone's actions, as well as determine the behavior of organisms such as finding food, reproduction, and avoiding the predators.
Therefore, the correct option is A.
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Our body needs both vitamin and mineral in a small quantity ,still they are important why?
Answer:
Vitamins and minerals are considered essential nutrients—because acting in concert, they perform hundreds of roles in the body. They help shore up bones, heal wounds, and bolster your immune system. They also convert food into energy, and repair cellular damage.
what is the phylum of lizard?
Lizard belongs to chordate phylum.
hope it helps you.
Muscle weakness is associated with Vit A/ Vit E/ Vit K/ Protein deficiency
Answer:
Low vitamin E levels may result in Muscle weakness: for the central nervous system, vitamin E is vital. It is one of the major antioxidants in the body and a shortage causes oxidative stress that can lead to weakening in muscles.
Explanation:
The body needs to work with vitamin E and become a necessary vitamin. It is fat-soluble, thus it has to be effectively absorbed in fat from the food. Before being released to the bloodstream for usage, vitamin E is mostly kept in the liver.
The deficiency is unusual and usually caused by an understatement. There are also modest levels of preterm newborns.
Eight kinds of vitamins exist. A blood test allows a physician to know how much a person has of an alpha-tocopherol form. Use this information to establish if the total vitamin E level of a person is present.
A standard level is typically between 5.5 and 17 milligrams (mg/L) per litre. For premature infants and youngsters under 17 years, the typical range may be different. The Normal scope may also be somewhat different amongst laboratories.
If an adult has less than 4 mg/L of vitamin E in his or her blood, supplementation is usually necessary.
explain the charge distribution in polar molecule
Answer:
polarity results from uneven partial charge distribution between atoms in a compound
Explanation:
electrons in a polar covalant bond are unequally shared between the two bonded atoms which results in partial positive and negative charges.the separation create a dipole.
