Answer: During the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium.
Explanation:
Apart from the fact that contractile cells conduct impulses, it also helps in contractions which are needed for pumping of blood. It should also be noted that the myocardial conducting cells serves as the heart's conduction system. They also have a lower resting membrane potential.
Of the options given, the answer is the last option i.e. during the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium. This is wrong.
Repolarization occurs due to a rise in the permeability of potassium and during repolarization, the calcium channels close.
Why do you think plants and animals have different types of cells?
Answer:
cause plants do not move from there places and need to make there own food so he can survive.. that is why they need a cell with all necessary and animals can hunt or eat plants which means he just need the cells to produce energy and movements
Explanation:
Plants and animals have different types of cells because they possess different characteristics, modes of nutrition, adaptation, metabolic activities, etc.
What are Plant cells?Plant cells may be defined as the type of eukaryotic cell that has a well-defined nucleus and other membrane-bound cell organelles. These cells are the basic unit of life in organisms of the kingdom Plantae.
Animal cells are also of eukaryotic nature but both shares a huge difference in the composition and manufacturing of cells. Plants have to synthesize their own food with the help of sunlight so they possess chloroplast while animal cells are of the heterotrophic mode of nutrition where they derive their food from plants and their products.
Plants are typically immobile in nature so they have required some sorts of cells that provide them stability in their survival. While animals need some motility cells like bones and other tissues that provide the movement.
Therefore, on the basis of structural dissimilarities, mode of nutrition, adaptation, metabolic activities, etc. plants, and animals have different types of cells.
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whats a biosphere, and how does it work?
Answer:
The biosphere is a layer of the Earth where all life exists.
Explanation:
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____________________ helps make animal membranes more rigid.
Answer:
fatty-acid makes animal membranes more rigid
Explanation:
Dr. Grant, my dear Dr. Sattler, welcome to ________ ____
A. The Island
B. Camp Cretaceous
C. The Isle
D. Jurassic Park
Answer:
answers is D Jurasic Park
Explanation:
hope this helped :)
Plz help don’t know which one.
Answer:
I think it is "serve a different function"
Explanation:
Answer for number 7 please! 30 points! Actually 60 point! :)
Answer:
i need a better photo
Explanation:
Matter is anything that has ____ and ____.
1. destiny, mass
2. volume, mass
3. volume, weight
4. destiny, weight
Cells harvest energy from food molecules by _____.
photosynthesis
respiration
fermentation
Answer:
Respiration
Explanation:
Respiration is the process by which cells obtain chemical energy
NEED HELP ASAP
Which of the following is a result of cohesion?
A)movement by osmosis ***
B)surface tension
C)the bent structure of a water molecule
D)a water droplet on a spiderweb
which part of the carbon cycle breaks down carbohydrates into carbon dioxide and water
Resipration
Ersion
Decomposition
Answer:
Respiration
Explanation:
Respiration is a component of the carbon cycle which breaks down carbohydrates into carbon dioxide and water.
Respiration is an aerobic process that takes place in the presence of oxygen.
It is a catabolic process in which energy rich compounds are broken down. In this process, oxygen combines with carbohydrates to produce carbon dioxide and water with the release of energy. Carbohydrates is rich and embedded with energy.Cellular respiration is the process that releases energy for living organisms.
NEED HELP ASAP * I THINK IS MY ANSWER
A carbon atom can form many different shaped molecules when bonded to other atoms. Which of the following best explains why this is true?
A)It has four valence electrons.
B)It forms hydrogen bonds.
C)It is an ion.*
D) It is an organic element.
Answer:
it has four valence electrons
Explanation:
Observation
Inference:
Observation: There is a kid in the pond. There is a tree branch falling off a tree. There is a goat or ram, whatever you call it. there is a white fence. There are 2 trees.
Inference: The tree branch is going to land in the pond or (if you have cruel thots) hit the kid. (If your very creative then you might say..."The goat or ram will headbutt the branch out of the way saving the kids life")
Hope This Helped m8
<3
water freely enters and leaves cells through channels formed by membrane proteins by
what does the process of fertilization create
Answer:
A zygote
Explanation:
Fertilization is the process through which two gametes fuse to create a new organism. In humans, an egg and a sperm fuse to create a new cell called a zygote which develops into a fetus.
Explain the role that sponges have in the environment
Answer:
Sponges collect bacteria when they filter the water around them. ... They may also be able to turn ammonium from the sponge's breathing into nitrogen gas that is then released into the atmosphere. This process would lower excess nitrogen levels in coral reefs, also preventing harmful ecosystem changes.
Explanation:
Answer: sponges have a role in the environment because they suck up the water or liquid.
Explanation:
Question multiple Choice with a pairs)
01.05 MC
Which situation shows where potential energy and komencemegy are balans
A stopped bicycle
A roller coaster car going uphill
A car moving at a steady speed
Arunner slowing down
Describe Genotypic Species Concept
Answer:
Genotype is the collection of genes responsible for the various genetic traits of a given organism. Genotype refers specifically to the genes, not the traits; that is, the raw information in an organism's DNA. Genotype is determined by the makeup of alleles, pairs of genes responsible for particular traits.
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Look at Figure 5. Which beaker contains a HYPOTONIC solution? * Beaker A Beaker B Beaker C Both beakers A and C
Answer:
A
Explanation:
I think it is A, But I am not sure
why genetic factor is very important in crop production
Answer:
The wise use of crop genetic diversity in developing improved crops can contribute significantly to protecting the environment. Crop varieties that are resistant to pests and diseases can reduce the need to apply harmful pesticides. More vigorous varieties can better compete with weeds, reducing the need for applying herbicides .
Explanation:
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Decide whether each of the following events would
result in primary or secondary succession.
3. A volcano erupts covering land in lava rock:
Type text here
4. Humans clear land for farming:
Type text here.
5. A lake dries up, forming a marsh:
Type text here
6. A wind storm builds new sand dunes:
Type text here
Answer:
Primary
Secondary
Secondary
Primary
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The following events would result in primary or secondary succession are:
1. A volcano erupts covering land in lava rock: primary succession.
2. Humans clear land for farming: Secondary succession.
3. A lake dries up, forming a marsh: Secondary succession.
4. A wind storm builds new sand dunes: primary succession.
What are main differences between primary and secondary succession?
Primary succession happens in a region without any initial verdure. Secondary succession occurs in a region with initial verdure. Primary succession is started either due to a biological factor or an outer agent. An external factor initiates secondary succession.
Thus, these are the answer.
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Humans are able to move their shoulder 360 degrees. What morphological features aid in this degree of motion (i.e. which bones)? Examine the bat wing below. Is there the same degree of motion? Explain why or why not.
Answer:
This question is incomplete because of the absence of bat diagram discussed in the question
Explanation:
Humans body contains several joints that allows from movement of bones at some junctions called the "joints". Joints are points where two bones meet. Examples of the human joints include the ball and socket joints, hinge joint, pivot joint, gliding joint, saddle joint. The type of joint in the human shoulder that allows for 360 degrees rotation is the ball and socket joint. It involves a bone that has a round head like that of a "ball" which can fit into an open cup-like shape called the "socket", hence the reason for the name. This joint allows for movement in all directions.
The bat wing does not move at the same degrees (360°) as it does not move in all directions - the wing has an up and down movement which is more of a 180° movement and not a 360° movement.
A mollusk's head may have tentacles for?
It covers the top of the body and encloses the internal organs. Most mollusks have a distinct head region. The head may have tentacles for sensing the environment and grasping food. There is generally a muscular foot, which may be used for walking.
Living organisms interact in a variety of ways for a variety of purposes. The imperial shrimp rides on sea cucumbers
as they travel underwater. This interaction enables the shrimp to use little to no energy to move between the areas in
which it feeds. The sea cucumber is typically unaware that the shrimp is using it for transport. Which type of interaction
occurs between the imperial shrimp and its host organism?
mutualism
commensalism
parasitism
competition
Answer:
Commensalism
Explanation:
Answer:
Commensalism
Explanation:
cells make up......... A:organs, which makes up tissue, which make up organ systems, which make an organism. B:tissue, which makes up organs, which make up organ systems, which make an organism. C:tissue, which makes up organisms, which make up organ systems, which make an organ. d:tissue, which makes up organ systems, which make up organs, which make an organism. will make brainliest
Answer:
it's B
Explanation:
cells make up tissue which makes up organ, combination of organs make organ system and the organ system makes up an organism.
Answer:
b
Explanation:
Do you think water pollution has a greater effect on humans than air pollution?
Answer:
I think they are both as bad.
Explanation:
I say this because air pollution can cause water pollution but the same goes the other way around.
Answer:
No, air pollution is worse.
Explanation:
Whilst water pollution would kill s over time from dehydration, the air pollution would kill us first. Air is how we breathe and that would kill us before the water did. Over all, air pollution would kill us first.
A student groups different types of cells as shown.
Which table headings should the student use for the two groups?
1. Animal Cells
2. Plant Cels
1. Prokaryotic Cells
O
2. Eukaryotic Cells
1. Mobile Cels
2. Motile Cells
1. Fungal Cells
2. Bacterial Cells
Prokaryotic and eukaryotic cells are the table headings which the student should use for the two groups respectively.
What are Eukaryotic cells?These are cells which have a nuclear membrane while prokaryotic cells lack it.
The first picture contains protozoa which is a prokaryote while the second contains plant anf animal cells which makes them eukaryotes.
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Explain how soil formation is helped by biotic components through primary succession.
Answer:
Please find the explanation below
Explanation:
Primary succession is a type of succession that occurs in an area with no previous community. It usually contains bare rocks, which are grown upon by certain living organisms (biotic components) called PIONEER SPECIES. These organisms, which include lichens and mosses, colonize the bare rocks and contribute to the formation of soil by the gradual disintegration of the rock particles.
These biotic components (living organism) also help to enrich the soil being formed as they add organic matter, which serve as nutrients, when they die and decompose. The actions of these living organisms on the formation of soil enables other organisms to easily colonize the area.
the grey area surrounded by the stage is called
Answer:
Figure 1-4 shows one with an animation in progress. Work area is the technical name for the gray area surrounding the stage, although many Flash-ionados call it the backstage. ... The Stage is where you draw the pictures that will eventually become your animation.
Explanation:
What is a predator? Give two examples.
PLEASE
Answer:
Some very common examples are a lion (predator) and a zebra (pray) or a bear (predator) and a salmon (pray).
Explanation:
A predator is an organism (plant or animal) that eats another organism (plant or animal). The prey is the organism that is eaten by the predator. Which means the predator is the thing eating the pray.
Answer:
A Predator can not be eaten but eats the others and a predator is probaly not afraid to get in a fight with another animal
Explanation: