PLEASE HELP!!!
In skeletal muscle, calcium ions leave the terminal cistern via the:
a. DHP receptor
b.Nicotinic ACh receptor
c.Ryanodine receptor
d.Calcium ATPase
e. Voltage-gated calcium channel​

Answers

Answer 1

Answer:

c.Ryanodine receptor

Explanation:

Calcium ion release from the SR, occurs in the junctional SR/terminal cisternae through a ryanodine receptor (RyR) and is known as a calcium spark.


Related Questions

Please help me with this biology thing.

Answers

Answer:

Answer:

1.

a)dd

b) dd

c) 0%

2.

a) 25%

b) 75%

c) 25%

3.

a) 03

b) 0

c) tt

4.

a) FF x ff OR FF x Ff OR FF x FF

b) Because all the children have freckles

Human skin comes in a variety of
shades, from pinkish white to dark
brown. How did this variation arise?

Answers

Answer:

Based on everything that you have learned so far, provide an explanation for how the different shades of skin color from pinkish white to dark brown evolved throughout human history. Darker skin colors evolved because they provided increased fitness in early human populations living in equatorial Africa.

Explanation:

how does the anti tetanus serum prevent tetanus

Answers

Answer: It is used to prevent tetanus in those who have a wound that is at high risk and have not been fully vaccinated with tetanus toxoid. It is also used to treat tetanus along with antibiotics and muscle relaxants. It is given by injection into a muscle.

Explanation:

a medication made up of antibodies against the tetanus toxin. It is used to prevent tetanus in those who have a wound that is at high risk and have not been fully vaccinated with tetanus toxoid. It is also used to treat tetanus along with antibiotics and muscle relaxants.

In addition to observable traits, scientists use to classify living things

Answers

Answer: 1 Phylum.

2 Order.

3 Class.

4 Family.

5 Genus.

6 Species.

Hope this helps. Can u give me brainliest

Explanation:


What process formed this delta?

Select one:
-A:erosion and deposition
-B :condensation and precipitation
-C:rock layer deformation
-D: shifting tectonic plates

Answers

Answer:

I think A

Explanation:

because erosion is the washing away of soil

Erosion and deposition are the formed on this delta. Thus, the correct option is A.

What is Erosion and deposition?

Erosion is the action of the surface processes such as water flow or wind which removes the soil, rock, or dissolved materials from one location on the Earth's crust and then transports it to another location on the Earth's crust where it is deposited. The erosion is distinct from that of weathering that involves no movement.

Deposition is the laying down of the sediment carried out through the wind, flowing water, the sea or ice. Sediment on the Earth's crust can be transported as pebbles, sand and mud, or as salts dissolved in water. Salts may later be deposited by the organic activity such as sea shells or by evaporation.

Therefore, the correct option is A.

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Which form of water is not considered as a resource? A) groundwater B) glacial ice C) ocean water D) water vapor E) surface water

Answers

Answer:

D. water vapor

Explanation:

water vapor is a gas and could not be used as a resource

How many wolves of the economy in the yellow stone national park ,

Answers

Answer:

94  

Explanation:

there is 94 wolves, 8 packs, and 7 breeding pairs.

Interferons play a vital role in the immune system. Why are interferons so important?

Interferons can interfere with viral replication

Interferons can inhibit cell division

All the answers above are correct

Interferons can combat bacterial and parasitic infections

Answers

Answer: all the answers above are correct

Explanation:

answer sheet of Grade 10 science what I have Learned module 2 Quarter 3​

Answers

i’m sorry but i would like to help but this got me lost

The first phase of Mitosis is _________ . In this phase the DNA condenses down into ________, and the duplicated separate. The second phase of Mitosis is_______ . In this phase the sister chromatids line up on the _______ plate through a push and pull motion as they connect to the microtubule spindle fibers emanating from the ________. The third phase of Mitosis is________ . In this phase the________ (sister chromatids or homologous chromosomes) are pulled apart. The fourth phase of Mitosis is_______ . In this phase the nuclear ________starts to reform and the DNA de-condenses.

Answers

The first phase of mitosis is prophase where DNA condenses down into chromosomes and the duplicated separate. The second phase of mitosis is metaphase where sister chromatids line up on the cell plate through a push and pull motion as they connect to the microtubule spindle fibers emanating from the centrosome. The third phase of mitosis is anaphase where sister chromatids or homologous chromosomes are pulled apart. The fourth phase of mitosis is telophase where the nuclear membrane starts to reform and the DNA de-condenses.

MITOSIS:

This question is describing the process of mitosis, a kind of cell division that results in two genetically identical daughter cells. Mitosis consists of four stages namely: prophase, metaphase, anaphase, and telophase etc.

PROPHASE is the first stage of mitosis where DNA condenses down into CHROMOSOMES, and the duplicated separate.

METAPHASE is characterized by the lining up of sister chromatids at the CELL PLATE through a push and pull motion as they connect to the microtubule spindle fibers emanating from the CENTROSOME.

ANAPHASE is the third stage of mitosis in which duplicated chromosome/sister chromatids are pulled apart into opposite poles.

The fourth stage is TELOPHASE where the NUCLEAR MEMBRANE starts to reform and the DNA de-condenses.

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What is an invasive species? *
A species that is found in an ecosystem.
A species that once was in an ecosystem.
A species that has different niches in the same habitat.
O A species that is introduced to an area.

Answers

Answer:

An invasive species is an introduced organism that negatively alters its new environment. Although their spread can have beneficial aspects, invasive species adversely affect the invaded habitats and bioregions, causing ecological, environmental, and/or economic damage.

When two parents heterozygous for genes for curly hair are crossed, what percent of their offspring would have curly hair? What percent would have straight hair?

Answers

Answer:

75% curly

25% straight

Explanation:

When two parents' heterozygous for genes for curly hair are crossed, 75% of their offspring would have curly hair, while 25% of their offspring would have straight hair.

What do you mean by Heterozygous?

Heterozygous may be defined as the presence of two different alleles at a particular locus. It always includes one normal allele and one mutated allele.

Here, the allele for curly hair is dominant over the allele for straight hair. So, the offspring who carry the pure dominant and heterozygous alleles for curly hair would have the phenotype of curly hair, while the offspring who carry both the recessive allele would have the phenotype of straight hair.

Therefore,  when two parents' heterozygous for genes for curly hair are crossed, 75% of their offspring would have curly hair, while 25% of their offspring would have straight hair.

To learn more about Purebred and Heterozygous alleles, refer to the link:

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. Which of the following would you expect to have cells with a cell membrane? *
1 point
panda bears
pine trees
spiders
all of the above

Answers

Answer:

All of the above!

Explanation:

I'm just sure it's that.

Answer:

The answer is all of the above

Explanation:

Both plant and animal cells have a cell membrane.

What is a density dependent limiting factor that affects population size?
-Drought
-Climate
-Natural Disasters
-Disease

Answers

Answer:

Disease

Explanation:

In Ecology, certain factors that affect the size of a population can either be dependent on size or not. Density-dependent factors are those factors that affect population of organisms in dependence of how dense the population is. Examples of these density dependent factors are diseases, predation etc.

For example, a certain disease will spread faster among a population of organisms whose size is dense but slower in a scarcely densed population. Hence, disease as a factor is dependent on population size. Note that; Drought, Climate, and Natural Disasters will wipe out a population irrespective of its size.

Answer:

Disease

Explanation:

Consider the following story:

“During the summers when Xavier was a young boy (around 8 years old), his grandfather would take him to northern Ontario to go fishing on weekends. Shortly after his grandfather died his family left Ontario. He was never able to clearly remember the fishing trips. When he was 30 years old he moved back to Ontario with his wife. One weekend they decided to take a trip to northern Ontario to spend the weekend at a resort on one of Ontario’s many lakes. When they got out of the car, they were overwhelmed by the aromatic smell of the trees in the heavily wooded area by the lake. Suddenly, memories of the wonderful weekend fishing trips with his grandfather came flooding back to the him.”



Discuss the following questions:

Is this an example of a repressed memory? If not, why not?

If it’s not a repressed memory, then what is it? What accounts for the sudden re-emergence of this buried memory?

Could this account for other, more traumatic, kinds of “repression” as well?

Answers

Answer:

No.

Explanation:

This is not an example of a repressed memory because these are the good memories whereas the repressed memory are bad memories of childhood. It may be infantile amnesia due to the inability of adults to bring episodic memories memories of situations or events that occurs in their childhood. The sudden re-emergence of this buried memory is the experience of the same situation or place or event that occurs in the childhood. If a person visit to a same place which he gone in their childhood so the person remember the buried memory.

Most professional sportsmen and sportswomen do not smoke.
Explain why:

Answers

um I think because it’s is bad for your lungs and breathing aka your health!

Morphine is created from what type of plant

Answers

Answer:

Per my research, Morphine is one of the many, and pharmacologically most important, opium poppy alkaloid (Papaver somniferum). A poppy plant consists of a lot of alkaloids.

Explanation:

Correct me if I am incorrect but this is what I got during my research. Have a good one and I hope this somewhat helped.

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Reefs grow best in _______. a. deep water b. low salinity c. temperatures below 25°C d. shallow water

Answers

Answer:

D

Explanation:

Reefs

1 salty water

2 maximum sun

3 73° F or higher


A mountain showed the following change in profile over millions of years.
Time
What happened to most of the material removed from the mountain?
Select one:
o
-A:The material disintegrated from exposure to sunlight.
-B:The material weathered to form new sediments.
-C:The material was destroyed by chemical reactions.
-D:The material was absorbed by plant roots.

Answers

Answer:

b

Explanation:

Viruses cause which of the following human diseases?
the flu, AIDS and Bubonic Plague
the flu, AIDS and athlete's foot
© AIDS, cold sores and athlete's foot
the flu, AIDS, and cold sores

Answers

Answer:

Explanation:

https://medlineplus.gov/viralinfections.html

Describe how each of the
following are evidence for Continental Drift
1. Fossils
2. Landforms
3. Rock Formations
4. Climate

Answers

Answer:

idek sorry

Explanation:

[
What does it mean for a virus to "infect" a cell?
The virus lands on the outside of the cell and remains there until the cell produces more viruses.
The virus lands on the outside of the cell and eats proteins on the surface of the cell.
O The virus lands on the outside of the cell and injects its genetic material into the cell.
The virus lands on the outside of the cell and injects its proteins into the cell.

Answers

Answer:

for a virus to infect a cell, it means to spread. when it spreads, it overtakes what should be a healthy functioning cell and pollutes it.

Without doing a Punnett square, predict what percentages of
offspring the cross among a heterozygous slipper footed
pigeon and a non-slipper footed would create:

Answers

Answer:

50% slipper footed, 50% non-slipper footed

Which is not a chemical process in the
digestive system?
A. Bile interacting with digested food
in the small intestine
B. Acids reacting with food particles
in the stomach
C. Saliva breaking down food
particles
D. Chewing of food

Answers

Answer:

the process of chewing food is not a chemical process bt the process of tasting the food is a chemical process

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and mark my answer

Chewing of food is not a chemical process in the digestive system, but a mechanical process. Therefore, the correct option is D.

What is Digestive system?

A collection of organs called the digestive system help break down food into smaller molecules that the body can absorb and use for energy, growth, and repair. It consists of anatomical organs such as the anus, esophagus, stomach, small and large intestine, liver, and pancreas. Food is broken down physically and chemically by the digestive system, which also absorbs nutrients and gets rid of waste.

Chemical process of digestive system involves Bile interacting with digested food in the small intestine, acids reacting with food particles in the stomach and saliva breaking down food particles while the mechanical process involves chewing of food.

Therefore, the correct option is D.

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What is the answer to this problem in the photo

Answers

Answer:

the figure in the picture shows the structure of a carbohydrate.

Explanation:

carbohydrates are made up of carbon, hydrogen, and oxygen.

where is the earths magnetic field generated from​

Answers

The core is made out iron and nickel and the outer core is a liquid. This generates an electric current as the liquid in the outer core moves

How are weather fronts important to describing air masses?

Answers

Answer:

Air masses over water are called maritime air masses, while air masses over land are called continental air masses. The borderline between two air masses is called front. Cold fronts move faster than warm fronts and cause rapid formation of xlouds ,leading to violent storms and heavy rain.

Which metamorphic rock is foliated and coarse grained?
a. quartzite
b. hornfels
C. slate
d. gneiss

Answers

Answer:

Gneiss

Explanation:

Quartzite and Hornfels are both non-foliated metamorphic rocks. Slate is foliated but is fine-grained, which leaves us with Gneiss, which is a foliated, coarse-grained metamorphic rock

Now that we have studied the various types of vaccines, consider the current resurgence of diseases like the measles. How can we convince the general public and possibly even ourselves, that immunization is a necessary preventative measure for diseases that have serious complications? Is there a different schedule that we should consider? Are some forms of vaccines safer than others? Should we spread out the inoculation schedule to prevent confusion of a young person?

Answers

Answer:

Immunization is one of the most effective processes of preventing or treating dangerous disease. It should be told and advertise to the general public about the facts and importance of vaccination. Doctors and government should explain the reports and ratio that the people who are taking the vaccination in the proper dose and the right amount of vaccination are about 9 timeless likely to have to the other people. It is essential to get a proper dose and proper amount to avoid the development of resistance.

There are several forms of vaccine and they have a different schedule from each other. Every vaccine is safe but one needs to know the cycles, dose and amount of the vaccine. Yes, we should spread out the inoculation schedule to prevent confusion of a young person.

Starting with spore dispersal, and identify adaptations in the life cycle of the bryophyte for living in a terrestrial environment (ie, in air, without water surrounding the plant body). What are new stresses associated with living on land, and what morphological or physiological features did the first land plants have to evolve to cope with these stresses

Answers

Answer:

Stresses such as lack of nutrients, space, competition and water availability.

Explanation:

Lack of nutrients, space, competition and water availability are the stresses that the bryophyte can experience by living on land. The morphological or physiological features such as lowering transpiration rate by stomata, attain specialized structures to collect sunlight and fulfill water requirement by absorbing water from the air if no water is available in the soil etc are the features that the plant has to attain to cope with these stresses.

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