Which is NOT involved at the beginning
of a nerve impulse?
A. reaching the threshold
B. strong stimulus
C. sodium leaving the cells
D. negative charge inside the cell

Answers

Answer 1

Answer: the answer would be C

Answer 2

Sodium ion do not leave at the beginning of the nerve impulse.

They leave after the gated channel opens up after receiving a stimulus.What is a nerve impulse? It is an electrical signal that travels along a nerve fiber in response to a stimulus and serves to transmit record of sensation from a receptor or an instruction to act to an effector.Nerve impulse begin at dendrite and then move toward the cell body of neuron.

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Related Questions

what do you mean by bacteria?​

Answers

Answer:

Bacteria is a type of micro-organism and is also a prokaryote. These organisms can only be seen using a microscope. Some bacterias are harmful while some are helpful for human daily lives, such as probiotics, and are necessary for life. They have simple cell structures as there is no nucleus or membrane-bound organelles. Bacterias can be found in soil, water, plants, animals, etc. They can cause diseases such as Tuberculosis etc. Due to some diseases being caused by bacterias, doctors prescribe Antibiotics which has the ability to stop the activities in bacterial cell that causes it to lose its protective outer covering and completely stops it from multiplying.

Answer:

Bacteria are among the smallest living things. A single bacterium consists of just one cell, and is called a single-celled, or unicellular organism.

Even though it is just a single cell, it can carry out all seven life processes (movement, respiration, sensitivity, growth, reproduction, excretion and nutrition).

Identify the graph that matches each of the
following stories:
a. I had just left home when I realized I had forgotten my books so I went back to pick them up.
b. Things went fine until I had a flat tire.
c.I started out calmly, but sped up when I realized I was going to be late.

Answers

Answer:

A. 4, B. 2, C. 1

Explanation:

Biology report

Topic: Find out if there are diseases that are passed on from parents to the
offspring. Find out how these are carried and also if these diseases can be treated.


Answers

dominant genetic diseases

HUNTINGTON DISEASE

Explanation:

caused by a mutation in one copy of a gene. if a parent has a dominant genetic disease, then each of that person's children will have 50% chance of inheriting it.

NO TREATMENTS CAN ALTER THE COURSE OF HUNTINGTONS DISEASE.

BUT MEDICATIONS CAN LESSON SOME SYMPTOMS OF MOVEMENT AND PSYCHIATRIC DISORDERS.

P.S. IF YOUR TYPING THIS CHANGE THE WORDS

hope it helped

help is needed please

Answers

Answer:

3

Explanation:

Which of the following represents a commensalism relationship?
1 point
Both organisms benefit
Both organisms do not benefit
One benefits and the other is unchanged
One benefits and the other is harmed

Answers

Answer: one benefits and the other is unchanged

Explanation: commensalism is an association between two organisms where one benefits and the other derives neither benefits nor harm

Answer:

It would be C, one benefits while the other is unchanged

Explanation:

Commensalism is when an organism, uses another organism to benefit, hwile not bothering its host. One example would be Remora or Barnacles. Remora hang on the edge of sharks eating their left overs, they do not hurt the shark, branacles do the same thing on larger beings like whales.

Hope this helps, please mark as brainliest, thanks

If any type of rock experiences intense heat and pressure, it changes into __________ rock.

Answers

Answer:

metamorphic rock is the answer to your question.

metamorphic rock is the answer

Identify the four key concepts of Darwin's theory of natural selection. (2 marks)
Explain how Lamarck's theory was different and why it got rejected over time. (2 marks)

Answers

The answer above me is correct

What kind of frog\toad is this?
Giving brainliest to the first one who knows

Answers

Answer:

I'm having trouble seeing the picture

Answer:

it looks like an american toad or wood frog

3. Suppose you work for a Blabbit Labs, the developer of many different pharmaceutical products. Your research
division has stumbled across a new drug that you believe cures male pattern baldness. Before you can start selling the
drug, you must demonstrate to the U.S. Food and Drug Administration that the drug is effective.
a. What is the question being asked?

Answers

First I would ask if it is safe. Is there any side effects? Does it contain anything that may cause an allergy reaction?

In regards to the information given, the question being asked should be”Is the drug that is believed to cure male pattern baldness effective?” although I’m not completely sure that was what you were looking for but I hope that helped!!

⇒ What is ethnobiology?

Answers

Answer:

Ethnobiology is the scientific study of dynamic relationships among peoples, biota, and environments. ... The diversity of perspectives in ethnobiology is our greatest strength.

it is the scientific study if dynamic relationship between people,biota and environment

Identy three advantages and three disadvantages of bioplastics

Answers

Explanation:

Advantages of bioplastics

1.Less oil is used to produce petrochemical (oil-based) plastics which pose a great risk to the environment.

2.The common bioplastics can be injection molded and shaped to take the same form as traditional thermoplastics. In some cases, the bioplastics are stronger and lighter, too, so they are not necessarily only suitable for very niche applications.

3.Bioplastics are more marketable, for example, their usage may improve the value-add of a product through a green marketing campaign. After all, studies have shown that ‘80% of European customers want to buy products with a minimal impact on the environment,’ so bioplastics may represent a useful argument for brands.

Disadvantages of bioplastics

1.First, bioplastics are generally NOT cost-competitive compared to their oil-based counterparts. They are generally two or three times more expensive than the major conventional plastics such as PE or PET, and their production is plagued by low yields and being expensive. This disadvantage should be less acute when manufacturing plants become larger and benefit from economies of scale. A good example is Braskem’s 200,000-tonne bio polyethylene plant (equivalent to about 20% of the world’s current bioplastics production).

2.There is a concern that bioplastics based on terrestrial crops could harm food supplies; however, new innovations using food waste could be helpful in this regard and the concerns would seem to be unfounded as: ‘Perhaps 300,000 hectares are used to grow the crops which the industry processes into plastics. For comparison, this is about 0.02% of the world’s total naturally irrigated area available for cultivation. Even if half the world’s plastics were made from crops grown on food land, the industry would only require 3% of the world’s cultivated acreage.’

3.Crop-based bioplastics require fertile land, water, fertilizers, and are reliant on weather conditions. This means that the supply of raw materials for bioplastics are at risk of natural phenomena, such as drought.

Answer:

Three advantages of bioplastics:

1. Saving fossil fule

2. Reduction of greenhouse gas emission

3. Reclamation of by-products

Three disadvantages of bioplastics:

1. It won't biodegrade in a landfill

2. It contaminate plastic recycling streams

3. It encourage people to litter more

Explanation:

Hope it will help u

how do plants use carbon dioxide

Answers

Explanation:

Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis.

if my answer helps you than mark me as brainliest

activity
piz help me lpiz​

Answers

Answer:

biotic --> trees,plants,fish,humans,dog,cat,hen.....

abotic --> vehicles,stone,rock,wood, chappal,pen.........

Explanation:

biotic is living things....

abotic is non living things

Anthropologist have a keen interests in honey bees .why?

Answers

Answer:

But extrapolate to all the bees in a beehive and that singular moment is multiplied tens of thousands of times. ... The honey bee and flowering plants represent one of the most successful examples of mutualism in nature. Our food chain depends very heavily on the role of the bee as it pollinates.

Write a poem on environment with the title "I am the earth"

Answers

Answer:

I am the earth a beautiful place where birds and sparrows sing. I am the earth , a beautiful place where plants grow thick and thin.

Which of the following is an example of a physical change?
O A. A gas is given off when two substances are mixed.
B. A copper rod is hammered into a thin sheet.
C. A solid forms when two clear liquids are mixed.
O D. A matchstick changes color when it burns.

Answers

A gas is given off when two substances are mixed.

physical change: A copper rod is hammered into a thin sheet.

A solid forms when two clear liquids are mixed.

A matchstick changes color when it burns.

explanation

a physicals change vs chemical

physical change is like cutting, changing shape etc, it the molecules that make it and the chemicals of it stay same

chemical change when it chemically changed such as cooking meat

The Answer is B

B. A copper rod is hammered into a thin sheet.

Physical change does not affect the chemical components of the material and the rod was only hammered to change it shape (thus altering a change in the physical aspect)

How are proteins and nucleic acids related?

Answers

Answer:

C) The structure of proteins is determined by nucleic acids.

Explanation:

Protein is a polypeptide-based molecule. Polypeptides are a type of biological molecule made up of chains of amino acids. Nucleic acid, which comprises deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), is a family of macromolecules made composed of long chains of polynucleotides (RNA).

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Identify functions of ATP. Multiple select question. To power transport across cell membranes To power the movement of cells To accept electrons during oxidation-reduction reactions To drive energetically unfavorable reactions To store information within the cell

Answers

From the given options, the functions of ATP include:

To power transport across cell membranes.To power the movement of cells.To drive energetically unfavorable reactions.

Adenosine Triphosphate (ATP) is defined as the energy molecule that is derived from the metabolic oxidation of glucose.

This ATP is used for a variety of processes which include:

Active transport: It provides the energy that is needed to move materials against a concentration gradient. This leads to the transport of the materials across cell membranes.Movements: Muscle contraction and ciliary movement which brings about movement in cells, requires energy from the hydrolysis of ATP.Thermodynamically unfavorable reaction: This can be driven by the hydrolysis of ATP energy molecule in a cell.

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Answers

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why is the product MILO not a suitable for a vegan diet

Answers

MILO and MILO products may not be suitable for a vegan diet due to:

MILO and its products consist mainly of cocoa, malt barley, sugar, and milk powder. Milk powder essentially comes from animals.A vegan is a person whose lifestyles exclude animal products, especially when it comes to diets. A vegan diet primarily consists of plant and plant products.

Hence, the fact that MILO consists of powder milk which is animal-based might make it unsuitable for a vegan diet.

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Answer:

Explanation:

VEGAN DIET

A Vegan diet refers to diet that contain food from plants such as maize , beans, rice, wheat e.t.c It is mainly plants source and does not contain animal source.

But MILO is also Plant based energy and it contains several vitamins and minerals to help grow a healthy body: It contain Vitamins B2 and B3 which help to support effecient energy release in the body. It contain Essential nutrients like iron, zinc which are very minute

in plant based diets. Milo contain milk which is of animal source.

Therefore, Milo product is not suitable for a vegan diet because it contains milk solids which is derive from animal source.

Question 3
Some globular proteins are water soluble, while all fibrous/membrane proteins are water insoluble.
Which of the following statements BEST explains the reason for these differences?
A
Fibrous proteins have a large number of hydrogen bonds between the amino acids in the polypeptide chains that stabilize their structures, preventing solubility in water. The globular proteins that are water-soluble do not have as many hydrogen bonds between the amino acids in their peptide chains, allowing water solubility.
B
Fibrous proteins are configured in a way that exposes the polar side chains of the amino acids on the surface of the protein, preventing solubility in water. The globular proteins that are water soluble have nonpolar side chains on the surface of the protein, allowing water solubility.
C
Some globular proteins are configured in a way that exposes the polar groups of the amino acids on the surface of the protein, allowing water solubility. Fibrous proteins have nonpolar side chains on the surface of the protein, preventing water solubility.
D
Some globular proteins are composed of more than one polypeptide chain that weakly interacts with one another, allowing water solubility. Fibrous proteins are composed of only one polypeptide chain that tightly folds, preventing water solubility.

Answers

Globular proteins are spherical proteins which are water soluble and forms colloid in water.

The best statement which will explain the reason for difference in globular protein and fibrous proteins is statement C.

C. Some globular proteins are configured in a way that exposes the polar groups of the amino acids in the surface of the protein, allowing water solubility.

Fibrous proteins have non polar side chains on the surface of the proteins, preventing water solubility.

Globular proteins are water soluble. Fibrous proteins are not soluble in water.

Amino acids chain prevents folding up so that the chain is not broken and it remains in elongated form. The correct answer is C.

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A tech is using the H (flagellar) antigen to serotype a suspected Salmonella species. The results of the serotyping are agglutination with one well that indicates a group of possible serotypes, not one particular serotype. Quality control passed. Why did this occur

Answers

Some Salmonella H antigens can occur in multiple strains and serotypes

An antigen (Ag) is any molecule/structure such as, for example, a molecule present on the surface of a pathogenic microorganism, that can be bound by a specific antibody and/or B-cell receptor.  The Kauffmann–White classification scheme is a system that was adopted for use in 1934 in order to categorize different serotypes of the bacterial genus Salmonella, based on their somatic-surface antigens. The system is a practical (diagnostic) method based on the variation in the somatic (O) and flagellar (H) antigens present in the cell wall of Salmonella species. In this classification system, 'O' antigens are determined based on oligosaccharides which are associated with lipopolysaccharide, while the "H" antigens are distinguished by the protein content of the Salmonella flagella.  

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In a rainforest, there are trees of different sizes as shown in the figure below.
The trees in the UNDERGROWTH layer will probably face competition for which of the following resources?

a. Air
b. Water
c. Animals
d. Sunlight

Answers

Animals is the correct answer hope this helps

Explain why stem cell research is a controversial subject. What are some of the sources for stem cells?

Answers

Answer:

Stem cell research is a controversial subject because they are human embryonic stem cell (hESC), and obtaining stem cells involves the destruction of human embryos

Explanation:

The inner cell mass of a 5 to 7-day-old blastocyst can be used to generate pluripotent stem cell lines. Human embryonic stem cell investigation, on the other hand, is morally and politically fraught since it encompasses the killing of human embryos.

What are stem cells?

Stem cells are the primary raw material of the body, the cells that give rise to every other cells with specialized functions.

Under the right circumstances, stem cells differentiate to form the most cells known as daughter cells in the body or in a research lab.

Stem cells are mostly found in bone marrow. This is how they divide in order to produce new blood cells.

Once mature, blood cells end up leaving the bone marrow and reach the bloodstream. A small number of immature stem cells enter the bloodstream.

Bone Marrow has long been thought to be the best source of stem cells.

Previously, if a patient required a stem cell transplant but didn't have access to umbilical cord blood stem cells, they earned a bone marrow transplant.

Thus, this is the reason to have stem cell research as a controversial subject.

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The image of a scientist collecting a sediment core was taken at the Wild Harbor salt march on Cape Cod, Massachusetts. What evidence is this person hoping to collect from this research?
Scientist taking a sample of marsh soil.
© 2016 Woods Hole Oceanographic Institution


She hopes to discover if the oil is still floating on the surface.
She hopes to see if the oil is still present deep down below the surface.
She hopes to collect animals that have died from the spill.
She hopes to see how easily the oil can be removed from the soil.

Answers

Answer:

A. She hopes to discover if the oil is still floating on the surface.

100 points! will mark BRAINLIEST!!!!!!! Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy.



C6H12O6 + 6O2 → 6CO2 + ?H2O + Energy



Based on the law of conservation of matter, what is the missing coefficient for water?





6


2


8

4

Answers

Answer:

your answer is 6

Explanation:

C6H12O6 + 6O2 → 6CO2 + ?H2O + Energy

H12O6---> 2 hydrogen and 1 oxygen for very water molecule. 12 ÷ 2= 6 which means 6H2O

what is nitrification? describe the role of nitrify bacteria in this process​

Answers

Nitrification is a process by which nitrifying bacteria converts the atmosphere nitrogen into simplified nitrogen .By which plants can use it .Ajatobacter ,Risobium are some examples of nitrifying bacterias

Nitrification is a process that converts ammonia into nitrate by bacteria.

Role of bacteria

The bacteria Nitrosomonas and Nitrococcus present in the soil convert NH3 to NO2-, and another bacterium, Nitrobacter converts NO2- to NO3-. These bacteria gain energy through these conversions.

What is the main cellular structure involved in respiration?

Answers

Answer:

The mitochondria is the main cellular structure involved in respiration

by which large pieces of food are cut and crushed into
smaller pieces is called
a. emulsification b. chemical digestion
c. absorption de mechanical d
5. The tube that connects the mouth to the stomach is the
a. esophagus. b.epiglottis
c. peristalsis. d. pancreas.
5. The hard, outer coating of the tooth is called
a, a molar.
b. enamel.
c. an enzyme. d. dentin
- The building blocks of proteins are
a. enzymes. b. minerals,
c. amino acids, d. molecules
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C d. vitamin B
. Having too little of the mineral iron can cause
a. rickets.
b. goiter.
c. anemia d. beriberi.
The wavelike motion that moves food through the digestive tract is called
a. emulsification b. digestion. c. oxidation d. peristalsis.
. The enzyme that digests proteins is called
a. gastric juice. b. pepsin. c. chyme. d. lipase.
Food leaves the stomach in a thick, liquid form called
a. chyme. b. bile с. pepsin.
d. saliva
The movement of food molecules from the digestive system to the blood is called
a. emulsification. b. chemical digestion. c. absorption d. peristalsis.
Gastric juice contains all of the following except
a. hydrochloric acid
b. mucus c. pepsin
d. bile
The process by which large food molecules are broken down into smaller food
molecules is
a. chemical digestion. b. oxidation c. mechanical digestion d. absorption
d. mouth
Fats are digested in the
a. large intestine b. small intestine. c. stomach.
Poor nutrition caused by an unbalanced diet is called
a. rickets. b. anemia. c. malnutrition
d. goiter.
The fingerlike projections on the lining of the small intestine are called
h cilia
d. villi.
c. bile

Answers

Answer:

by which large pieces of food are cut and crushed into

by which large pieces of food are cut and crushed intosmaller pieces is called:

d. mechanical digestion

5. The tube that connects the mouth to the stomach is the:

a. oesophagus

5. The hard, outer coating of the tooth is called:

b. enamel

- The building blocks of proteins are:

c. amino acids

5. Which of the following vitamins is made by the body?

a. vitamin D- b. vitamin A c. vitamin C

. Having too little of the mineral iron can cause:

b. goitre

The wavelike motion that moves food through the digestive tract is called:

d. peristalsis

Gastric juice contains all of the following except:

d. bile

The process by which large food molecules are broken down into smaller food

The process by which large food molecules are broken down into smaller foodmolecules is:

c. mechanical digestion

Fats are digested in the:

b. small intestine

Poor nutrition caused by an unbalanced diet is called:

c. malnutrition

The fingerlike projections on the lining of the small intestine are called:

b. villi

[tex].[/tex]

Answer:

d. mechanical digestion

a. esophagus

b. enamel

c. amino acids

a. vitamin D

c. anemia

d. peristalsis

b. pepsin

a. chyme

c. absorption

b. mucus

a. chemical digestion

b. small intestine

c. malnutrition

b. villi

Not 100% sure on some of these but very positive on most of them :) Hope this helps.

Explanation:

How do we aquire knowledge in science?

Answers

Answer:

By studiying and aying attention in class

Explanation:

Answer:

The answer is:

By studying. By exploring. By paying attention to the lessons)

Explanation:

Other Questions
Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal.Now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a portion of that field, as a final resting place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this.But, in a larger sense, we can not dedicatewe can not consecratewe can not hallowthis ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here. It is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to be here dedicated to the great task remaining before usthat from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotionthat we here highly resolve that these dead shall not have died in vainthat this nation, under God, shall have a new birth of freedomand that government of the people, by the people, for the people, shall not perish from the earth. Overall theme Complete the table for the given rule.Rule: y=\dfrac{x}{2}y= 2x y, equals, start fraction, x, divided by, 2, end fractionxxx yyy1112.52.52, point, 53.53.53, point, 5 Designing shoes is hard work. It will pay off in the end.Identify the sentence that combines the above passage into a complex sentence.Designing shoes is hard work, but it will pay off in the end. Designing shoes is hard work; however, it will pay off in the end. Designing shoes is hard work; it will pay off in the end. Although designing shoes is hard work, it will pay off in the end. Maya and Kenzie are discussing oil spills and how they impact the environment. How can humans help reduce the impact of oil spills? So fabricados nos E.U.A.?. Fabricados aqui? Espantada, ela me explicou que seus tnis so produzidos no Brasil e na sia.Bill Krenn, Gerente de relaes pblicas dos sapatos K-Swiss, retornou minha ligao, mas me interrompeu antes que eu pudesse concluir minhas perguntas. No fornecemos informaes sobre a produo, disse. S posso dizer que realizada no exterior.A maioria dos operrios que produzem sapatos no sudeste asitico de adolescentes e mulheres jovens. Eles trabalham de 15 a 16 horas dirias. Muitas mulheres vivem em alojamentos, separadas de suas famlias; em alguns casos so virtuais prisioneiras, proibidas de deixar as instalaes da fbrica sem um passe especial. O salrio mnimo na Indonsia de 1,80 dlar por dia.Telefonei para a Nike mais uma vez, na condio de jornalista. Falei com Keith Peters, diretor de relaes pblicas. Entre longos silncios, ele disse que no economicamente vivel, para a Nike fabricar seus sapatos nos Estados Unidos. (...)Aps a leitura do texto, responda:1- Quais so os lugares citados no texto?2- Qual o assunto retratado pelo texto?3- Quando e onde aconteceram tais fatos?4- Onde so fabricados os produtos consumidos nos EUA?5- Porque os EUA produzem e compram tnis na sia e no fabricam em seu prprio pas? Explique. What is the chemical formula of potassium manganate vii how do i convert 134five to base ten A derivative work is also granted copyright protection with a half paid write up. Give four examples of such work. Pls help .ZZZZZZZZA what do you mean by compound sentence? Explain. 5. A child rides a pony on a circular track with a radius of 5 m Find the distance traveled and the placementafter the child has gone halfway around the track (8) Does the distance traveled increase, decrease, or stay thesame when the child completes one circuit of the track? Does the displacement increase, decrease, or stay thesame? Explain. (C) Find the distance and displacement ter a complete circuit of the track The chi-square test statistic is 2 = 18.68 and the P-value is between 0.0025 and 0.005. What conclusion should the researcher make? Use = 0.05. During normal beating, the heart creates a maximum 4.10-mV potential across 0.350 m of a person's chest, creating a 1.00-Hz electromagnetic wave. (a) What is the maximum electric field strength created? V/m (b) What is the corresponding maximum magnetic field strength in the electromagnetic wave? T (c) What is the wavelength of the electromagnetic wave? If an atom of chlorine (CI) were to ionize, it wouldelectron(s). 2. . Complete the following past simple and continuous events. Choose the correct alternative (10 points)1. Sylvia _____________ when she ___________ the DVDs.a) was running / droppedb) ran / droppedc) was running / was droppingd) ran / was dropping 2. While Steve ___________ a documentary, he __________ asleep.a) was watched / fellb) was watching / fellc) watched / was fallingd) was watching / felt3. They _________ when you _________ for remote control.a) aren't listening / were askingb) weren't listening / were askingc) weren't listening / askedd) listened / asked Will give brainliest answer How many meters are in 10 miles? use the formula v=u+at to find the velocity when the initial velocity is 3m/s2 the time is 7 seconds I need help ASAP thank you Progress is impossible without change, and those who cannot change their minds cannot change what is a example of this quote