In the heart, an action potential originates in the __________.

Answers

Answer 1

Answer:

sinoatrial (SA) node


Related Questions

What do the fungus that causes athlete's foot, the tick that spreads Lyme disease, and body lice all have in common

Answers

The common difference between them is that they are all bacteria.
Hope it’s helps

HELP PLEASE
In pea plants Y = yellow and y = green for color. Also, R = round and r = wrinkled. If a plant that is
yyrr is crossed with one that is YyRr, then how many different phenotype combination offspring
could be produced?
A. 1
B. 4
C. 16
D. 2

Answers

i think four phenotypes can be produced

aquatic plant emits bubbles of oxygen when placed under a bright light. The table shows the results of an experiment to show the effect of light intensity on bubble production. Use the data in the table to answer the question.


Oxygen Production
Distance From Light (cm)
Bubbles Produced per Minute
10
39
20
22
30
8
40
5


Distance From Light (cm)
10
20
30
40


Oxygen Production
Bubbles Produced per Minute
39
22
8
5



What conclusion about photosynthesis is supported by the evidence from this experiment? Explain your reasoning.

Answers

more light means more photosynthesis means more oxygen

closer to light the more oxygen is produced

distance from light & oxygen produced is in an inverse relationship which means when one goes up the other goes down

According to the data on the table, when the distance from the light increased, the bubbles produced per minute have decreased. The relationship between the two variables shows an inverse one. This means that if one variable increases, then the other one decreases, and vice-versa. Using this information, we can conclude that when the aquatic plant is placed far from light, it gets less sun exposure. This affects the rate of photosynthesis, including its by-products. When the rate of photosynthesis is slow, the oxygen produced as a waste product is also low.

quizlet

All living things are classified into kingdoms based on specific characteristics. Which of the following are only characteristic of the plant kingdom?
A.autotrophic, prokaryotic cells, cell wall present
B. autotrophic, eukaryotic cells, no cell wall
C. autotrophic, prokaryotic cells, no cell wall
D. autotrophic, eukaryotic cells, cell wall present

Answers

The answer is D. Autotrophic, eukaryotic cells, and cell walls!

The characteristics that is specific to only the plant kingdom is autotrophic, eukaryotic cells, cell wall present.

WHAT ARE THE CHARACTERISTICS OF PLANTS:

Living organisms has been classified into kingdoms based on specific characteristics. The kingdoms we have are as follows:

MoneraPlantaeAnimaliaFungi Protista

Organisms in the kingdom Plantae possess the following characteristics:

They are autotrophs i.e. can synthesize their own food via photosynthesis. Plants are also eukaryotic i.e. possess a membrane-bound nucleusThey contain a cell wall

Therefore, the characteristics that is specific to only the plant kingdom is autotrophic, eukaryotic cells, cell wall present.

Learn more about plants at: https://brainly.com/question/9031447

The ability of the ground to allow water to move through it into the groundwater, is a measure of the
the ground.
A. anchorage
B. permeability
C. Timing
D. waterlogging

Answers

Explanation:

water droplets are found in the pores between the sediment grains, which is porosity. When the water can travel between ores, that’s permeability.

NEED ANSWER ASAP PLSSSSS THANK YOU
Match these items.

1. Synura
Rhizopoda
2. Volvox
Phaeophyta
3. Giardia lamblia
Apicomplexa
4. Saccharomyces cerevisiae
Chlorophyta
5. Amoeba proteus
Chrysophyta
6. Plasmodium ovale
Zoomastigophora
7. Sargussum
Basidiomycota
8. Agaricus bisporis
Ascomycota

Answers

Based on taxonomic classification, the given organisms are classified as follows:

1. Synura ----> Rhizopoda 2. Volvox ---> Chlorophyta 3. Giardia lamblia ----> Basidiomycota 4. Saccharomyces cerevisiae ---> Apicomplexa5. Amoeba proteus ---> Zoomastigophora 6. Plasmodium ovale---> Chrysophyta7. Sargussum ---> Ascomycota8. Agaricus bisporis ----> Phaeophyta

What are the correct classification of the given organisms?

Taxonomic classification is the organisation of organisms based on similarities in their structure, function and biochemical composition.

Organisms are classified into Kingdoms, Phylum/Division, Class, Order, Family, Genus and species.

Based on taxonomic classification, the given organisms are classified as follows:

1. Synura ----> Rhizopoda2. Volvox ---> Chlorophyta 3. Giardia lamblia ----> Basidiomycota 4. Saccharomyces cerevisiae ---> Apicomplexa5. Amoeba proteus ---> Zoomastigophora 6. Plasmodium ovale---> Chrysophyta7. Sargussum ---> Ascomycota8. Agaricus bisporis ----> Phaeophyta

Learn more about taxonomic classification at: https://brainly.com/question/1304906

What animal is associated with ebola virus outbreaks?.

Answers

African fruit bats are likely involved in the spread of Ebola virus and may even be the source animal (reservoir host). Scientists continue to search for conclusive evidence of the bat's role in transmission of Ebola.

A process by which cells break polymers down into smaller units is.

Answers

Answer:

Hydrolysis

Explanation:

Polymers are broken down into monomers in a process known as hydrolysis, which means “to split water,” a reaction in which a water molecule is used during the breakdown (Figure 3.1. 2).

Somatic and autonomic are divisions of the ______ nervous system.

Answers

Answer: The somatic and autonomic nervous systems are both part of the peripheral nervous system, which allows the brain and spinal cord to receive and send information to other areas of the body.    

   

Explanation:

What are organic compounds

Answers

Answer

What are organic compounds

An Organic compound is any member of a large class of gaseous, liquid, or Solid chemical compounds whose molecules contain carbon.

#CarryOnLearning

[tex] \mathfrak{ - \: WatanabeHaruto}[/tex]

Which kind of force do you exert on an object when you pull it toward you?
OA. applied force
ОВ. attractive force
OC. drag force
OD. normal force

Answers

OA. applied force, bc applied forced is contact force

mRNA: GCU ACG GAG CUU CGG AGC UAG
What is the sequence of anticodons for this sequence of
mRNA

Answers

The anticodon is complimentary to the mRNA and identical to DNA but instead of thymine, it has uracil.

mRNA: GCU ACG GAG CUU CGG AGC UAG

tRNA: CGA UGC CUC GAA GCC UCG AUC

1) With the worldwide demand for beef increasing each year, large areas of the Amazon rainforest are cleared for cattle grazing. Describe two ways that this practice contributes to Earth's greenhouse effect. Write your answer in complete sentences.​

Answers

Answer:

1. oxygen levels will decrease and carbon dioxide levels will increase due to the deforestation of trees.

2. increase of population= increase of land needed and more fossil fuels will be burnt .

Increase in CO2 levels due to deforestation of the trees in the forest will contribute to greenhouse effect.release of methane from cow and buffaloes reared for beef will also contribute to greenhouse effect.

What are the effects of clearing Amazon rainforest for beef ?Methane, a strong greenhouse gas, is produced during the digestion of plants and grasses by cows and other ruminant animals (such as goats and sheep). The term "enteric fermentation" refers to this process, which is where cow burps come from. Manure also releases methane into the air. Additionally, ruminant waste on pastures and chemical fertilizers applied to crops grown for bovine feed release nitrous oxide, another potent greenhouse gas.A more indirect but equally significant requirement for more land is the rise in cattle production. Cutting down trees to make room for new pastures releases carbon dioxide that has been stored in forests.

learn more about greenhouse effect here: https://brainly.com/question/11812392

#SPJ2

. Taiga forests are _____
and receive_______
rainfall than temperate broadleaf forests.

Warmer less warmer more colder more or colder less

Answers

Answer: Taiga forests are colder and receive less rainfall than temperate broadleaf.

Explanation: Taiga is very cold and most rainfall happens in summer.

Hope it helps

Why do we have to start with the lowest magnification to examine a new slide?.

Answers

Why do we have to start with the lowest magnification to examine a new slide? It is easier to focus on the specimen.

Answer:

Why do we have to start with the lowest magnification to examine a new slide? It is easier to focus on the specimen.

Explanation:

What happens to chromosomes when a cell is about to divide?.

Answers

Answer:

Division

Explanation:

Chromosomes might divide to form chromatids at the centromere

Height,hair color,eye color,and intelligence are traits passed on by__

Answers

Answer:

genes or genetics they're the same thing

Explanation:

Which gland is located closest to the human brain?.

Answers

The pituitary gland is the gland located closest to the human brain.

What structure is most likely used for motion

Answers

Answer:

Flagella.

Explanation:

Trust Me

Why does the Sun rise earlier in New York City than it does in California?

(n0 us1ng g00gl3)

Answers

Answer:

bc its not the nearest state they Arnt near eachother i think lol srry if im wrong

Explanation:

Please tell me true answer plz​

Answers

Answer:

1 right atrium

2 superior vanacava

3 tricuspid valve

4 right ventricle

5 left ventricle

6 mitral valve

7 left atrium

8 left pulmonary artery

The diagram below represents the chemical pathway of a process in a human liver cell.A particular liver cell is unable to make substance C. One possible explanation for the inability of this cell to make substance C is that

Answers

Answer: nuclear DNA was altered resulting in the cell being unable to make enzyme Y.

Explanation:I don’t have an explanation I just took the test and got the answers

Dna replication results in two dna molecules. What is true about each of the two new dna molecules?.

Answers

Answer:

Once DNA replication is complete, there are two new DNA molecules; one molecule has both of the original strands and one molecule has two new strands of DNA.

Explanation:

When flexing all of the fingers joints maximally in combination with maximal wrist flexion and no further flexion of any of the involved joints may be reached, the result is _______.

Answers

When no further flexion of any of the involved joints may be reached, the result is an active insufficiency of the extensor muscles. They are involved in muscle extension.

What are the extensor muscles?

The extensor muscles are muscles capable of increasing the angle between members in a given limb.

Extensor muscles include, for example, teres major, the latissimus dorsi, triceps brachii, etc.

Moreover, flexor muscles include upper limb flexors such as biceps brachii and brachialis.

Learn more about the extensor muscles here:

https://brainly.com/question/5935162

MARKING BRAINLIEST, IMAGE ATTACHED!!!

How does the body use atoms such as carbon, hydrogen, and oxygen in metabolism?

Answers

Answer:

C. Atoms can be used over and over in different molecules

Explanation:

When different compounds enter the stomach, they undergo a series of chemical reactions and are broken down. They are then used for new metabolic processes. For example, if glucose was broken down into pure Carbons, they could then react and form other molecules as needed by the body.

What does the wide variety of different types of animal eyes represent?.

Answers

Answer:

Their shape arose through convergent evolution, since that shape is beneficial for animals living in the ocean.

what results from sea-floor spreading? please help

Answers

Answer:

The crust cracking.

Explanation:

Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other. ... The less-dense material rises, often forming a mountain or elevated area of the seafloor.

Answer:

Seafloor spreading creates new oceanic crust at a mid-ocean ridge.

Explanation:

When this new material reaches the end of the plate and comes into contact with another plate, whether continental or not, a convergent or a transform boundary will occur.

Hope this helps please mark brainliest please :)

Explain how Winogradsky columns illustrate the diversity of microorganisms found on Earth today in terms of the diversity of niches they occupy.

Answers

Answer:

How do Winogradsky columns illustrate the diversity of microorganisms found on Earth today in terms of the diversity of niches they occupy. Different layers in the column form based on the availability of oxygen and other nutrients. ... A large diversity of microbes are adapted to life without oxygen.

Biological macromolecules are organized into four major categories. What type of macromolecule contains phosphorus as part of a phosphate group?.

Answers

Answer:

Nucleic Acids

Explanation:

The optic nerve carries impulses to the thalamus and, ultimately, to the ________ of the occipital lobes.

Answers

The answer is visual cortex

Other Questions
earliest document to which the United States can trace its democratic heritage? You need to add security for your wireless network. You would like to use the most secure method. Which method should you implement?. A line segment has an endpoint at (-4,8) and a midpointat (2,-2) what is the x coordinate of the other endpoint? Ned has 55 marbles in his collection he has twice as many white marbles as red marbles he has five more blue marbles than white marbles how many white marbles does Ned have PLEASE help and please show steps!! Levi started collecting lunch boxes when he was 5 years old. He had 18 superhero lunchboxes, 24 outer space lunch boxes, and 21 rock band lunch boxes.)) Then Levi's cousin started her own lunch box collection. Levi wanted to help her getstarted, so he gave his cousin 25 lunch boxes from his collection. How many lunch boxesdoes Levi have left in his collection? Which of the following map elements helps us interpret the colors and symbols we might see on a map? A. a title B. a set of coordinates C. a legend D. a compass rose Please select the best answer from the choices provided A B C D PLS HELP!!! 20 pts!!!!1. If QR = 12 and QR is a perpendicular bisector of TS, determine which of the following claims are true. Select the correct response from each drop-down menu. Soak up is an example of Choose... absorb affect conserve seeps Change is an example of Choose... absorb affect conserve seeps Save is an example of Choose... absorb affect conserve seeps Leaks is an example of Choose... absorb affect conserve seeps HELP ASAP WILL MARK BRAINLIEST 100 POINTS!! I need to know how to solve this problem I need to know these steps step by step PRODUCT RULE QUOTIENT RULE NEGATIVE RULE POWER OF A POWER POWER OF A PRODUCT POWER OF A QUOTIENT AND ZERO RULE Mallory research study about genetics origins of personality traits is consider to have high reliability Describe one aspect of your environmental health that affects your own physical health. Does x=y-1 represent a fraction ? How does Shakespeare use language to present Lady Macduff as a victim? The Sunnah is based on thea. hadithb ShariahCQuran.Five Pillars of Islam.d What is a texts main idea? whats the slope and y - intercept of this equation ? A day at the parkIs just what we need!Grassy sofas, leafy cushions,Tall bark recliners,Warm granite footstools,Red flower carpets,And glassy pond rugs, blue and white.But when we arriveLazy guestsWith manners like rats,Have left their foul tracksFor somebody else.Yuck! my brothers say,Their faces fallingIn total disgust at the mess.Punting paper plates,I say, Chill out, guys.We can pick it up.Well play a treasure-hunting game.A scavenger hunt,Willing kidsWith trash bags and gloves,Committed warriorsReady for battle.Question 1Part AWhat is a theme of the poem?A persons words reveal more than a persons behavior.Turning anger into action takes courage.Hard work rarely leads to great rewards.An individual's actions can affect a community's well-being.Question 2Part BWhich set of lines from the poem best supports the answer to Part A?"A day at the parkIs just what we need!Grassy sofas, leafy cushions,Tall bark recliners,""'Yuck!' my brothers say,Their faces fallingIn total disgust at the mess.""But when we arriveLazy guestsWith manners like rats,Have left their foul tracks""Willing kidsWith trash bags and gloves,Committed warriorsReady for battle." Qu diferencia hay entre la masa y el volumen de un objeto Productivity is the combination of