A neuron's resting potential is due to the greater concentration of ions inside and outside the cell membrane.
Specifically, the resting potential is largely determined by the higher concentration of potassium ions inside the neuron and the higher concentration of sodium ions (Na+) outside the neuron.
This difference in ion concentration creates an electrochemical gradient across the cell membrane, which contributes to the resting potential of the neuron.
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can someone send a link on this topic or help me do it in any way?? its due tomorrow
Answer:
You should explain more...
Explanation:
why do cells have a continuous supply of APT
Answer:
ADP is recycled to make more ATP
Explanation:
Answer:
Cells require a continuous supply of energy to power the multitude off metabolic reactions required to sustain life. To drive a reaction, however, energy must be in a usable form: generally, this means it must be stored in the bonds of energy- carrier molecules, especially adenosine triphosphate
Explanation:
hope this helps
how do you solve these? for 4mm onwards
use the equations written in blue at the top
example for 5mm:
side length (s) = 5mm
surface area (6s²) = 6(5²)mm²
volume (s³) = 125mm³
ratio (surface area/volume) = 1.2:1
Identify the 2 primary consumers in this food web.
A-Foxes and Frogs
B-Decomposers and Rabbits
C-Caterpillars and Frogs
D-Caterpillars and Rabbits
Answer: Caterpillars and Rabbits
Explanation:
Primary consumers are Herbivores who consume Primary producers.
Hope this helps!
Answer:
I believe it is caterpillars and Rabbits
why do nonmetals make up almost everything
Answer:
It is the most abundant
Explanation:
The four most abundant elements by mass in the human body are other nonmetals including oxygen (65%), carbon (18%), hydrogen (10%), and nitrogen (3%). The most abundant of the other nonmetals in the Earth's crust is oxygen which is the single most abundant element in the Earth's crust.
for a person deprived of water, the satisfaction that follows drinking a thirst-quenching beverage best illustrates
For a person deprived of water, the satisfaction that follows drinking a thirst-quenching beverage best illustrates the concept of homeostasis.
Homeostasis is the maintenance of a stable internal environment in an organism, and the desire to drink water is a response to an imbalance or disturbance in homeostasis caused by dehydration. The deprivation of water is often associated with thirst. Dehydration causes the body to crave water, and drinking a thirst-quenching beverage brings relief and satisfaction to the body. This response is due to the body's natural tendency to maintain a balance of water and electrolytes, which is essential for proper bodily functions such as regulating body temperature, blood pressure, and metabolism.
Drinking a beverage to satisfy thirst also activates the reward and pleasure centers in the brain, leading to a subjective feeling of satisfaction and relief. This response is mediated by various physiological and psychological factors, including the release of neurotransmitters and the perception of quenching one's thirst.
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3. Cellular respiration produces which of the following gases?
The sedimentary rock layers are being weathered and eroded at different rates because the rock layers:
Explanation:
Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at the Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of geological detritus (minerals) or biological detritus (organic matter). The geological detritus originated from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or mass movement, which are called agents of denudation. Biological detritus was formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur as dissolved minerals precipitate from water solution.
What is the direct effect of oxygen to sea otters
Answer:
It would be difficult to recreate the exact conditions of the chemical release elsewhere.
Explanation:
Some form of early Homo is estimated to have evolved into Homo erectus around: O 5-7.5 million years ago
O 1.7-2 million years ago O 10,000-40,000 years ago O 50,000-70,000 years ago t
Some form of early Homo is estimated to have evolved into Homo erectus around 1.7-2 million years ago, option B is correct.
Homo erectus is believed to have evolved around 1.7-2 million years ago based on fossil evidence and dating methods. Fossil discoveries, such as the famous Nariokotome Boy skeleton found in Kenya, provide crucial insights into the anatomy and characteristics of Homo erectus. These fossils, along with other archaeological and genetic evidence, suggest that Homo erectus was the first hominin species to exhibit significant anatomical and behavioral differences from earlier hominins.
The emergence of Homo erectus marked a significant milestone in human evolution, as this species had a larger brain size, more advanced tool-making abilities, and potentially even the ability to control fire. These developments laid the foundation for the subsequent evolution of Homo sapiens, option B is correct.
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The complete question is:
Some form of early Homo is estimated to have evolved into Homo erectus around:
A) 5-7.5 million years ago
B) 1.7-2 million years ago
C) 10,000-40,000 years ago
D) 50,000-70,000 years ago
Why are stem cells used widely now, as opposed to cloning?
Explanation:
short hair for the cover sails type of human embryonic stem cells is not widely recognized how we're not in Umbria
explain how machines can be useful if the output work is always less than the input work.
Answer:
If the output work makes the job easier in any way.
Explanation:
which of the following structures forms the anterior portion of the nasal septum?
Hyaline cartilage forms the anterior portion of the nasal septum.
The anterior portion of the nasal septum is formed by hyaline cartilage. The nasal septum is the structure that separates the two nasal cavities. It consists of both bone and cartilage components.
Hyaline cartilage is a type of flexible connective tissue that provides support and structure to various parts of the body, including the nasal septum. It is smooth and resilient, making it suitable for maintaining the shape and stability of the anterior part of the nasal septum.
The ethmoid bone, maxilla, and mandible mentioned in the options do not directly form the anterior portion of the nasal septum. The ethmoid bone is part of the lateral wall and roof of the nasal cavity, while the maxilla is a facial bone contributing to the upper jaw and the mandible is the lower jawbone.
Therefore, the correct answer is A. Hyaline cartilage, as it forms the anterior part of the nasal septum.
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The complete question is:
Which of the following structures forms the anterior portion of the nasal septum?
A. Hyaline cartilageB. Ethmoid boneC. MaxillaD. MandibleWhich of the following vessels has the lowest blood pressure?
elastic arteries
inferior vena cava
aorta
capillary beds
The capillary beds have the lowest blood pressure among the vessels listed.
The lowest blood pressure: elastic arteries, inferior vena cava, aorta, or capillary beds. The vessel with the lowest blood pressure is the inferior vena cava. The inferior vena cava is a large vein that returns deoxygenated blood from the lower half of the body back to the heart, and veins typically have lower blood pressure than arteries or capillaries.
This is because capillaries have the smallest diameter and the largest total cross-sectional area, which slows down the flow of blood and reduces blood pressure.
Additionally, the thin walls of capillaries allow for easy exchange of gases, nutrients, and waste products between the blood and the surrounding tissues.
The lowest blood pressure: elastic arteries, inferior vena cava, aorta, or capillary beds. The vessel with the lowest blood pressure is the inferior vena cava.
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many game species (e.g. elk, turkey, white-tail deer, antelope) populations have greatly decreased over the past decade due to over-hunting.
False, many game species (e.g. elk, turkey, white-tail deer, antelope) populations have not greatly decreased over the past decade due to over-hunting.
Overhunting is an activity that causes a significant reduction in the population of a species or harm to wildlife. It is also defined as the relentless pursuit of wild or game animals in order to kill or capture them for economic, personal, or food reasons. Local extinctions can result from local hunting and illegal wildlife trade, which can drive species to extinction. Because of hunting, wildlife populations have declined in forests throughout the tropics, and vulnerable species have often been extirpated, resulting in what is known as the 'empty forest syndrome.'
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The words underlined above are the main variables of the experiment, the factors that changed. Label them below: • Magnification is the variable. • The cell organelles seen is the variable.
Answer Magnification is the independent variable
The cell organelles scene is the dependent variable
Explanation: I answered the question and got it right :)
Answer:
1) independent
2)dependent
Explanation:
just took it on edge
PLZ HELP with this one!
The force needed to move the airlock that distance as calculated to be 500N. It was also found that the airlock accelerated 10m/s^2 what musty have been the total mass of the airlock including the man?
a)0.02kg
b) 50kg
c)500kg
Answer:
b) 50kg
Explanation:
You simply use F=ma equation, newtons second law
We are given: F=500N a=10m/s^2 m=?
1) lets change F=ma to help us find the m, we divide both sides with the a so we get \(\frac{F}{a} =m\)
2) plug in the F and the a, \(\frac{500N}{10m/s^2} =m\), where \(\frac{N}{m/s^2} =kg\)
3) plug it in ur calculator and you should get 50kg
hope this helped :)
Individuals joining a population is an example of emigration / immigration
Answer:
immigration
Explanation:
temporary immunity, transmitted from a source outside the body that has developed immunity through previous disease or immunization, is called
Temporary immunity that is transmitted from a source outside the body that has developed immunity through previous disease or immunization is called passive immunity.
Antibodies made by another person or animal are delivered into the body to induce passive immunity. This can take place artificially, such as when a person receives antibodies from an animal or another person as a therapy for an illness, or organically, such as when a mother gives antibodies to her fetus during pregnancy or through breast milk.
Because the antibodies are not created by the recipient's own immune system and do not offer long-term defense, it is only a transitory form of immunity. Eventually, the body will break down and destroy the antibodies. Active immunity, in contrast, is a long-lasting type of immunity that is gained through the body's own immune system's manufacture of antibodies in response to a pathogen or vaccination.
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If the mRNA codon is CCA, what should be the tRNA anticodon be? And Which amino acid does this make?
Answer:
GGU i think
Explanation:
following an injury to your hand, the injured area appears red and swollen. it feels painful and warm to the touch. what is the cause of these symptoms? see section 11.12 (page) . A. natural killer cells B. the complement system C. external defenses D. the inflammatory response
Answer: The Inflammatory Response
Explanation: The damaged cells release chemicals including histamine, bradykinin, and prostaglandins. These chemicals cause blood vessels to leak fluid into the tissues, causing swelling
two mice are heterozygous for albinism (aa) . the dominant allele (a) codes for normal pigmentation, and the recessive allele (a) codes for no pigmentation. what percentage of their offspring would have an albino phenotype? view available hint(s)for part f two mice are heterozygous for albinism (aa) . the dominant allele (a) codes for normal pigmentation, and the recessive allele (a) codes for no pigmentation. what percentage of their offspring would have an albino phenotype? 75 50 25 100
For albinism (Aa), two mice are heterozygous. The recessive allele (a) codes for absence of pigmentation, whereas the dominant allele (A) codes for normal pigmentation. A phenotype of albinism would be present in 75% of their offspring.
A cell, a nucleus, or an individual organism is said to be heterozygous if it has different or non-identical alleles for a specific trait at the same loci on homologous chromosomes. Contrary to homozygous, in which the alleles are identical, it signifies that the alleles that code for the same gene or trait are different. A diploid is a living being or a cell having two chromosomal groups. The first pair is from the mother, while the second is from the father. A homologous paternal chromosome exists for each.
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Pros and cons of ocean pollutions . (Plastic in the ocean)
Answer:
Check explanation
Explanation:
Cons- The most visible impacts of plastic debris are the ingestion, suffocation and entanglement of hundreds of marine species. Marine wildlife such as seabirds, whales, fish and turtles mistake plastic waste for prey; most then die of starvation as their stomachs become filled with plastic.
Pros- Researchers are concerned that this proliferation of plastic may be giving striders, microbes, animals and plants that grow directly on the plastic an advantage over oceanic animals that are not associated with hard surfaces, such as fish, squid, tiny crustaceans and jellyfish.
Which of the following is a modification of the simple columnar epithelium that allows for efficient absorption along portions of the digestive tract? fibroblasts thin and permeable dense microville cilia
The correct answer is "microvilli." Microvilli are microscopic, finger-like projections that extend from the apical surface of cells in a simple columnar epithelium. These small structures greatly increase the surface area available for absorption and play a crucial role in enhancing the efficiency of nutrient absorption along portions of the digestive tract.
Within the digestive tract, the simple columnar epithelium lines the surface of organs like the small intestine and large intestine, where nutrient absorption occurs. The presence of microvilli on the surface of these epithelial cells provides numerous benefits for efficient absorption.
Firstly, the abundance of microvilli significantly increases the total surface area available for absorption. This increased surface area allows for a greater contact between the luminal contents (such as digested food) and the absorptive cells, maximizing the absorption of nutrients like carbohydrates, proteins, and fats.
Secondly, the microvilli contain specialized transport proteins and channels that facilitate the absorption of specific molecules. These proteins help transport nutrients across the epithelial cells and into the bloodstream or lymphatic system. The dense packing of microvilli amplifies the presence of these transport proteins, further enhancing absorption efficiency.
Additionally, the microvilli possess a brush-like appearance due to their close arrangement. This brush border aids in trapping and retaining the digested food particles and nutrients, preventing their rapid movement through the digestive tract. This allows for sufficient time for absorption processes to occur.
In contrast to microvilli, cilia are hair-like structures present on certain types of epithelial cells. While cilia have important functions like moving mucus and facilitating the movement of substances, they are not directly involved in absorption along portions of the digestive tract.
Therefore, the modification of the simple columnar epithelium that enables efficient absorption along portions of the digestive tract is the presence of microvilli.
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This organelle uses light energy to make sugar from carbon dioxide and water are
Answer: Chloroplast
Explanation:
Plants and some algae have chloroplasts responsible for photosynthesis. Plants undergo photosynthesis to transform light energy into chemical energy. This energy is stored in the form of sugar to support their growth and provide energy. Chloroplasts have a double membrane, with the thylakoid membrane located within the inner membrane.
Photosynthesis occurs within the thylakoid membrane, which is folded into sacs called thylakoids. Chlorophyll, a green pigment, is present in the thylakoids and it absorbs light energy to split water molecules into hydrogen and oxygen. The oxygen is released into the atmosphere while the hydrogen is used to create ATP, a molecule that stores energy. ATP and hydrogen are then utilized to make sugar, the final product of photosynthesis.
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how are the nucleus, rough er, and vesicles related?
Answer:
They are all organelles in a cell
Explanation:
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Match each term with its definition Terms 1. Law of conservation of energy 2. Law of conservation of mass 3. Raymond Lindeman 4. Trophic level Definitionsa. energy cannot be created nor destroyedb. a biologist who studied ecosystem ecologyc. matter cannot be created nor destroyedd. a position in a food chain, a food web, or an ecological pyramid that is occupied by a group of organisms
1. The law of conservation of energy states that energy cannot be created nor destroyed. Therefore, the correct answer is A.
2. The law of conservation of mass states that matter cannot be created nor destroyed. Therefore, the correct answer is C.
3. Raymond Lindeman is consideres the founder of ecosystem ecology. Therefore, the correct answer is B.
4. Trophic level is a position in a food chain, a food web, or an ecological pyramid that is occupied by a group of organisms. Therefore, the correct answer is D.
what are the 3 basic muscle types
Answer:
Skeletal, Smooth, Cardiac
Explanation:
Skeletal muscle is the specialized tissue attached to bones and allows movement.
Smooth muscle – located in various internal structures including the digestive tract, uterus, and blood vessels such as arteries.
Cardiac muscle – The muscle-specific to the heart.
What role does the nitrogen cycle play in the life cycle of a plant? ( please help me! thank you! )
Answer:
Assimilation
Explanation:
This is how plants absorb nitrates from their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll.
Which of these examples illustrates deductive reasoning?
option B is the examples that illustrates deductive reasoning. Now you decide that fate always punishes yo You learned in elementary school that as temperature drops, liquids change into solid form.
Drawing inferences using deductive logic is a form of deductive reasoning. It is impossible for the premises to be true and the conclusion to be false, which is a requirement for a deductively valid inference. Deductive validity allows one to draw the conclusion that Socrates is mortal from the premises "all men are mortal" and "Socrates is a man." If all of your premises are true and your argument is valid, it is considered sound. The author must intend for the premises to provide the conclusion with deductive support, according to some theorists, who define deduction in terms of the author's intentions. It is feasible to discern between legitimate and unjustified deductive reasoning with the use of this adjustment.
Which of these examples illustrates deductive reasoning?
A) You come down with the flu after you pretended to be sick so you could skip work to attend a concert.
B) Now you decide that fate always punishes yo You learned in elementary school that as temperature drops, liquids change into solid form.
C) You are given an unfamiliar liquid and hypothesize that it will.
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