The correct answer is option (a.) the amplitude of action potential, (b.) the resting membrane potential and (e.) the K+ conductance.
Increasing the extracellular K+ concentration will depolarize the cell, leading to a less negative resting membrane potential. This change will decrease the resting membrane potential closer to the equilibrium potential for K+. Consequently, it will also decrease the electrochemical gradient for K+ ions and reduce the driving force for K+ efflux. As a result, the K+ conductance will decrease. Finally, the amplitude of the action potential may decrease because the smaller electrochemical gradient for K+ ions will lead to a smaller K+ efflux during repolarization.
The incorrect options are:
c. The membrane capacitance: The membrane capacitance refers to the ability of the cell membrane to store charge. Increasing the extracellular K+ concentration does not directly affect membrane capacitance. Instead, it primarily affects the electrical properties of the membrane through changes in ion concentrations and permeability.
d. The permeability of the neuron cell: Increasing extracellular K+ concentration primarily affects the resting membrane potential and the electrical properties of the cell membrane, but it doesn't directly alter the permeability of the neuron cell. Permeability changes typically occur due to alterations in ion channels or membrane properties, not solely due to changes in extracellular ion concentrations.
The first genetic map, using drosophila to measure crossover frequencies, was actually and personally constructed by:
Baking soda (sodium bicarbonate) dissolved in the water, releasing carbon dioxide. Why was it important to add the baking soda?
) when cells are broken open, dna is released from cells into solution. name at least two other macromolecules that are also released from the cells, and the places they are found in the cells.
Protein, nucleic acid, carbohydrate and lipid that are released from the cell.
Protein and nucleic acid are the two macromolecules that are also released from the cells when the cell is broken up because these two macromolecules are present in the cell and performs different types of functions that helps the cell in growth and development.
There are two more macromolecules are present such as carbohydrates and lipids in the cell that are also very important for cell so we can conclude that when the cell is broken, protein, nucleic acid, carbohydrate and lipid are released from the cell.
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On average, women receive only ____ milligrams of iron per day. science forum
Compare and contrast tidal volume (tv), inspiratory reserve volume (irv), expiratory reserve volume (erv), and vital capacity (vc). why and how could an individual's tidal volume decrease and increase?
Estimate how much the brain would swell due to osmosis if the concentration of the cerebrospinal ±uid fell to 280mm. in other words, ³nd what the new volume
Estimating how much the brain would swell due to a drop in cerebrospinal fluid concentration to 280 mm involves understanding osmosis and brain-CSF osmotic balance, which is crucial for preventing conditions like hydrocephalus. The exact new volume would need medical evaluation.
Explanation:The question concerns the phenomenon of brain swelling due to osmosis caused by changes in the concentration of cerebrospinal fluid (CSF). When the concentration of CSF falls, such as to 280 mm, water can flow into the brain cells due to osmotic imbalances, potentially leading to a condition like hydrocephalus. However, estimating the exact new volume of the brain due to osmosis requires sophisticated medical instruments and knowledge of osmotic pressure in the brain's environment. Normally, the pressure in the CSF ranges from 5 to 12 mm Hg, and deviations from this range can affect the brain's volume and pressure dramatically.
For example, if the gauge pressure in the fluid surrounding the brain increases significantly, it can lead to an increase in the outward force on the skull, even causing the skull to grow abnormally large in infants with hydrocephalus. In adults, a reduction in the CSF concentration can cause severe headaches and damage due to the brain resting upon the skull.
The specific volume change due to a CSF concentration drop to 280 mm would vary based on individual circumstances and would require medical assessment to determine.
what is not a characteristic of life?
Answer:
Immortality is not a characteristic of life.
Explanation:
Firstly the characteristics of life is responsiveness to the environment, growth and change, reproduction, metabolism, maintain homeostasis, being made of cell, and passing trades on to offspring.
We know that life is limited so immortality or unlimited duration of existence is not a characteristic of life.
Which of the following has the highest viscosity? ice cold water,honey,coffee, milk
Answer: water
Explanation:
The interaction between which protein and ion initiates contraction of skeletal muscle?
A tree grows and increases its mass. explain why this phenomenon is not a violation
Which best describes the vulva?
Answer:
The vulva refers to the female external genitalia.
It includes labia majora, labia minora, cli-toris, the opening of urethra, vagina, Mons pubis, and anus.
Cli-toris is located at the top of labia where internal labia meet.
The opening of the urethra is located just below the cli-toris through which a female excrete or pee.
Below the urethral opening, there present a vaginal opening. It provides the path for menstrual blood and babies to come out of the body.
Mons pubis helps in cushioning the pubic bone.
Proteins are made of amino acids. what elements make up amino acids? look up the structures of the 20 amino acids in your textbook and list the 5 elements present.
Why is it important to strengthen deep back muscles as well as abdominal wall muscles?
Northern coniferous forests, characterized by long, cold winters and conifers with short needles, are the largest terrestrial biome. true or false?
a. True
b. False
The correct answer is a. True
Taiga - Cold in the winter and warm in the summer, the taiga is the world's largest land biome.
What is northern coniferous forest?
coniferous forest, vegetation composed primarily of cone-bearing needle-leaved or scale-leaved evergreen trees, found in areas that have long winters and moderate to high annual precipitation. The northern Eurasian coniferous forest is called the taiga or the boreal forest.
Where is the northern coniferous forest located?The northern coniferous forest, or taiga, extends across North America from the Pacific to the Atlantic, across northern Europe through Scandinavia and Russia, and across Asia through Siberia to Mongolia, northern China, and northern Japan.
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Luis is 23 years of age and weighs 220 pounds. based on his body weight, his rda for protein is ____ grams.
Answer:
The RDA for Luis Protein is 79.20 grams.
Explanation:
RDA stands for Recommended Dietary Allowance and is characterized by calculations that show the amount of nutrients, protein, carbohydrates, fats and other factors that are required for good nutrition for each person. Calculations are based on the weight of each individual. In the case of Luis who has a weight of 220 pounds, to know his protein RDA, we must multiply his weight by 0.36. Thus, we will know that the RDA for proteins is equal to 79.20 grams, for Luis.
How does the temperature affect enzyme function? use evidence from your data to support your answer?
A 7 kilogram cat is resting on top of a bookshelf that is 1 meters high. What is the cat’s gravitational potential energy relative to the floor ?
Which part of the blood is most efficient at carrying oxygen? select one:
a. blood plasma solution
b. blood plasma proteins
c. blood platelets
d. membrane molecules of red blood cells
e. hemoglobin molecules of red blood cells next?
New Zealand has a population of 4,326,380 and has an area of 103,736 mi2028-02-04-03-00_files/i0370000.jpg while Australia has an area of 2,967,909 mi2028-02-04-03-00_files/i0370001.jpg and a population of 21,905,140. Explain how New Zealand can have a larger population density than Australia even though it has a smaller total population.
Even though New Zealand has a smaller population than Australia, it has a greater population density because it covers a much smaller area. Australia’s population is approximately five times larger than New Zealand’s while the area Australia covers is approximately 30 times larger than the area New Zealand covers.
The number of people residing in a region is population. New Zealand has a larger population density as it covers a small area.
What is population density?The complete question is: New Zealand has a population of 4,326,380 and an area of 103,736 while Australia has an area of 2,967,909 and a population of 21,905,140. Calculate the population density for New Zealand and Australia. Round the population densities to the nearest whole number.
Population density is the population size of a particular species in a particular area. It gives the relation between the demographic, ecosystem, and growth rate.
The area covered by New Zealand is small and has a large population density despite having less population than Australia. On the other hand, Australia has a population 5 times more than New Zealand but its area is more.
The population density of New Zealand is People ÷ Area: 4326380 ÷ 103736 = 42 people per square mile.
The population density of Australia is 21905140 ÷ 296909 = 7 people per square mile.
Therefore, New Zealand has a larger population density.
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Sleepwalking is most likely to occur in _____.
Which is considered the first stage of the cell cycle?
Answer:
C
Explanation:
I just took the test
Bacteria reproduce asexually by A) mitosis. B) meiosis. C) conjugation. D) binary fission.
Scientists always prove or disprove their explanations by _____.
gathering evidence
using mathematical formulas
recording thoughts
doing laboratory experiments
Correct answer: A). Gathering evidence
The scientific explanation uses measurements and observations in order to explain something in the natural world. The Scientist uses the scientific method to collect evidence in the experiment that is related to the hypothesis.
They can gather the evidence by just observing the natural world and its phenomena or by performing an experiment in the laboratory or by running a model.
Hence, the correct answer would be option A.
True or false: natural monopolies may occur
The scientific method is
a. reliable.
b. impartial.
c. limited in when it can be used.
d. all of these are correct.
What evidence would you look for to see if a chemical reaction has occurred?
whats the relationship of the organelles of the endomembrane system
The organelles of the endomembrane system - the nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, and vacuoles - interact and cooperate via direct contact or vesicle transfer. Their individual functions contribute to the overall function of the cell in terms of production, modification, transportation, and disposal of substances.
Explanation:The organelles of the endomembrane system are interconnected through direct contact or by the transfer of membrane segments as tiny vesicles. The endomembrane system consists of the nuclear envelope, the endoplasmic reticulum, the Golgi apparatus, lysosomes, and vacuoles.
The nuclear envelope is contiguous with the endoplasmic reticulum, which manufactures lipids and proteins. These products are then sent to the Golgi apparatus in vesicles, which modifies them for their specific functions and addresses them for transport to their proper locations. Lysosomes contain enzymes that break down waste materials and cellular debris, while vacuoles are storage organelles that can hold a variety of substances.
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Corn smut and wheat rust are crop diseases caused by ______ fungi.
A. Sac
B. Club
C. Zygote
D. Chytrid
Answer:
B. Club
Explanation:
Corn smut is caused by Ustilago maydis while wheat rust is caused by Puccinia triticina. Both Ustilago maydis and Puccinia triticina are classified under division Basidiomycota. Basidiomycota is also called as club fungi. These fungi form specific club-shaped fruiting bodies called basidia. Basidia are the site for the formation of basidiospores.
Both Ustilago maydis and Puccinia triticina are organised under division Basidiomycota. Basidiomycota is also called as club fungi. These fungi form specific club-shaped fruiting bodies called basidia.
What are corn smut and wheat rust caused by?The corn smut, a plant disease induced by the fungus Ustilago maydis, strikes corn (maize) and teosinte plants.
The condition reduces grain yields and can cause financial losses, though in Mexico the naive galls of infected ears of corn are eaten as a fineness known as huitlacoche.
Thus, option "C" is correct, fungi form specific club-shaped fruiting bodies called basidia.
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The DNA sequences that make up the genetic code of an organism determine which traits the organism will exhibit. How are the instructions coded by DNA translated into an organism's physical traits?
DNA is a genetic material, which is present in the nucleus of a eukaryotic cell. The coding part of the DNA, known as genes makes up the genome of an organism.
DNA is a double-stranded helical structure, which is made up of a pentose sugar, nitrogenous bases, and phosphate backbone.
The nucleotide sequence in the DNA is translated into the proteins via transcription and translation.
These proteins or the long chain of amino acids code for the phenotypes or physical traits of an organism.
The base pairs are read in the form of triplets, known as codons. Each codon represents an amino acid, which is then linked to form a long chain.
Thus, the instructions are coded in the form of codons or triplets, which help in the translation of DNA to proteins.
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Genetics, botany, and zoology are all branches of what subject ?
A. Chemistry
B.biology
C.physics
D.astronomy
Final answer:
Genetics, botany, and zoology are all branches of biology, which is the overarching science concerned with the study of life and living organisms.
Explanation:
Genetics, botany, and zoology are all branches of biology, which is the correct answer to your question. Biology is the scientific study of life and living organisms, encompassing various specialized fields. For instance, genetics is concerned with how traits are inherited, botany focuses on the study of plants, and zoology is the branch that specializes in the study of animals. Other branches of science include fields such as physiology, the study of the functions of living organisms; geophysics, which explores the physical processes and properties of Earth; and agriculture, which involves the cultivation of plants and animals for food, fiber, biofuel, and other products beneficial to life.