what is the significance of t tubules?

Answers

Answer 1

Explanation:

The significance tubules are the site of spermatogenesis where germ cell develop into spermatozoa in close interaction with sertoli cells.
Answer 2

Answer:

Explanation:

T-tubules are invaginations of the plasma membrane, which are present exclusively in striated muscle. Their role is to maintain the SR calcium store under the tight control of membrane depolarization via the voltage sensor channel DHPR .


Related Questions

Porque voy a estudiar nutrición y dietética?

Answers

Answer:

La carrera de nutrición y dietética forma profesionales altamente capacitados en el campo de la salud desde una perspectiva de la alimentación

Explanation:

La alimentación es un aspecto clave en la vida que se encuentra relacionado directamente con la cantidad y calidad de los alimentos que ingerimos, lo cual es fundamental para tener una vida saludable y desarrollar un estado de bienestar tanto físico como emocional. La carrera de nutrición y dietética pertenece al área de la salud y tiene como objetivo formar profesionales que se encuentren altamente especializados para el desarrollo de programas de alimentación adecuados, teniendo en cuenta las características intrínsecas de los grupos de alimentos, sus propiedades y los requerimientos personalizados para cada paciente. En consecuencia, los profesionales en nutrición y dietética desarrollan un conocimiento profundo acerca de cuales son los requerimientos en macronutrientes (proteínas, hidratos de carbono y lípidos) y micronutrientes (vitaminas y minerales) para cada individuo, esto con la finalidad de adaptar la alimentación de acuerdo a su edad, peso corporal, estatura, etc. Los profesionales en este campo poseen además conocimientos avanzados en biología humana, bioquímica, química orgánica, como así también desarrollan aptitudes en psicología y salubridad alimentaria.

Living in the northern hemisphere, you decide to plant tulip bulbs in the spring. You are disappointed in the summer when they do not bloom. You had forgotten that tulip bulbs need a period of vernalization in order for them to bloom. What change should you make?
a) Plant the tulip bulbs in soil that has an abundance of nutrients, especially phosphorus.
b) Make sure that the tulips are kept in shady areas as too much sun will not allow them to sprout
c) Be careful to give the tulips plenty of water while they are germinating, but reduce the amount as the plants grow.
d) Ensure the plants are established in a region that will receive long periods of dark as this is required for the tulips to bloom.
e) Plant the tulip bulbs in the fall as opposed to the spring.

Answers

Answer:

b) Make sure that the tulips are kept in shady areas as too much sun will not allow them to sprout

What are the following is considered a receptive a fine touch

Answers

Explanation:

This system is responsible for all the sensations we feel – cold, hot, smooth, rough, pressure, tickle, itch, pain, vibrations, and more. Within the somatosensory system,there are four main types of 1.receptorsme chanoreceptors, 2.thermoreceptors,3. pain receptors, and 4. proprioceptors.

For which of the following phenomena is intrinsic affinity necessarily more important than functional affinity?
A. Antibody-mediated opsonization of encapsulated bacterial pathogens
B. Assay using antibodies to detect small drugs in solution
C. Binding of C1q to immunoglobulin G (IgG) or IgM
D. Binding of neutralizing IgG antibodies to nonenveloped viruses​

Answers

Explanation:

B. Assay using antibodies to detect small drugs in solution

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Fill in the bottom line of DNA with the complementary base pair:

Answers

Answer: ACCTGATCGTAGCT

Explanation:

Keep in mind that in DNA replication, the matching base pairs are A and T (adenine and thymine) and C and G (Cytosine and Guanine). This means that for DNA complementary strands, A's can ONLY bind with T's and C's can only bind with G's , and vice versa. So, your answer for the picture you have given is ACCTGATCGTAGCT

what did Rudolf virchow discovered?

Answers

Answer:

Explanation:

In 1855 Virchow published a statement based on his observations Omnis cellula e cellula, which means that all cells arise from pre-existing cells. This was not a new theory.

explain why an increase in tempreture causes an increases on enzyme activity

Answers

Answer:

because they both work togther

Explanation:

hi, define chemistry and mention the three branches of chemistry answer it fast .Good night​

Answers

Explanation:

Branches of inorganic chemistry include: ... Nuclear chemistry — the study of radioactive substances. Organometallic chemistry — the study of chemical compounds containing bonds between carbon and a metal. Solid-state chemistry — the study of the synthesis, structure, and properties of solid materials.

Answer:

The five primary branches of chemistry are physical chemistry, organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry.

How would you
change the hypothesis if mussels died in
both aquariums?

Answers

The new hypothesis could be that there is another alternative factor that is negativey afecting dwarfs survivorship.

The previous hypothesis of high levels of phosphate killing mussels is not necessarily disproved.  But the death of mussels from both the control and the treatment groups might be related to one of the controlled variables that could be actually afecting them.      

----------------------

Probably different levels of phosphate are also affecting invididuals´ survivor rates. However, the fact that mussels from all the aquariums died suggests that there is something else going on that caused the death of all the individuals.    

The control group is used to identify any other factors influencing the results obtained in the study, apart from the modified variables of the treatment.  Individuals of the control group are selected from the same population as the treatment group. These two groups are identical in all aspects except for the independent variable, which changes in the treatment group but remains constant in the control group.

We know that mussels in this experiment were taken from the same population and grown under the same controlled conditions. Only the treatment group received phosphate, but all mussels died, not only the ones that receive phosphate. This result turns to be useful because it is indicating that there is another variable that is killing mussels. Phosphate might be a cause of death, but there is also something else. So the researchers should pay attention to the controlled variables, such as water quality, temperature, pH, food supply, light exposure, or others.  

These variables might be reflecting the real conditions under which mussels live. The results tell that one of these is related to individual death and could be a consequence of climate change or soil use, among other causes.    

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What theory explains why the Uranian system is on its side?

Answers

Answer:

Astronomers have always assumed that Uranus must have been knocked onto its side by a collision. Now a new idea suggests that the planet's remarkable tilt could have another explanation.

Explanation:

I just know it

Answer:

Astronomers have always assumed that Uranus must have been knocked onto its side by a collision. Now a new idea suggests that the planet’s remarkable tilt could have another explanation.

by Emerging Technology from the arXivarchive page

December 3, 2009

One of the great mysteries of our Solar System is why Uranus is tilted on its side. Surely, if the solar system formed from the same rotating cloud of dust and gas, then all the bodies within it should rotate in the same way. And yet Uranus’ axis of rotation lies at 97 degrees to the plane of the solar system.

Two organisms, AABBCCDDEE and aabbccddee, are mated to produce an F1 that is self-fertilized. If all of these genes are on the same chromosome, and there is no recombination, how many different genotypes will occur in the F2

Answers

Answer:

2 genotypes: AABBCCDDEE; aabbccddee

Explanation:

The law of segregation (also called Mendel's First Law) describes how genes on different chromosomes segregate into gametes independently of each other. Moreover, recombination (also known as crossing over) is the interchange of genetic material between non-sister chromatids during meiosis. In this case, the five genes are on the same chromosome (i.e., they are linked together and do not segregate) and there is no recombination, thereby they are inherited as a haplotype block to the next generation:

- Genotypes parental (P) lines: AABBCCDDEE; aabbccddee

- Cross P1: ABCDE X abcde

- Genotype F1: AaBbCcDdEe (100%)

- Gametes F1: ABCDE; abcde

- Genotypes F2: AABBCCDDEE; aabbccddee (ratio 1:1)

which of the following is a major determinant of the distribution pattern of a population?
1 social interactions
2 habitat area
3 rate of population growth
4 the ages of the individuals

Answers

Answer:

rate of population growth

Oxygen is produced.
Select one:
O a. Both Photosynthesis and Cellular Respiration
b. Photosynthesis
c. Cellular Respiration
d. Neither Photosynthesis nor Cellular Respiration

Answers

Answer:

b.Photosynthesis

Explanation:

as plants produce 02 in the presence of light

Answer:

Option(B):Photosynthesis

Explanation:

Cellular respiration, the process by which organisms combine oxygen with molecules,

in photosynthesis oxygen is produced

An element has an atomic mass number of 16 and an atomic number of 7. The element has protons and neutrons. Reset Next

Answers

the answer of this question is answer b

grafting requires both a scion and a rootstock. true or false​

Answers

Answer: true

Explanation: the upper part (scion) of one plant grows on the root system (rootstock) of another plant. In the budding process, a bud is taken from one plant and grown on another.

a body may have zero velocity even though its speed is 10m/s. give reason.​

Answers

Explanation:

because speed is time rate at which an object is moving along a bath, while velocity is the rate and direction of object's movement .

From a chemical view, how is an amino acid is being recognized by its specific aminoacyl tRNA synthetase?

Answers

Answer:

An aminoacyl-tRNA synthetase (aaRS or ARS), also called tRNA-ligase, is an enzyme that attaches the appropriate amino acid onto its corresponding tRNA. It does so by catalyzing the transesterification of a specific cognate amino acid or its precursor to one of all its compatible cognate tRNAs to form an aminoacyl-tRNA.

Give reason. Mosquitoes and housefly are placed in the phylum arthropoda​

Answers

Mosquitoes and Housefly are grouped under the phylum Arthropoda because they both posses jointed legs (or appendages).

Animals that have jointed appendages are called Arthropods (i.e animals with jointed legs). They are triploblastic (i.e they have 3 germ layers) and exhibit bilateral symmetry. They are both six-legged arthropods sub-grouped under the class Hexapoda (coined from the word "hexa" meaning six and "Poda" meaning leg). Their body are divided into three parts; head, thorax and abdomen.

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An unknown solution has a pH of 7.1. Which of these chemicals is likely to increase the pH the most when added to the solution?

HF

KOH

NH3

HNO3

Answers

Answer:

It is most likely KOH

Explanation:

NH3 is classified as a weak base so I'd suspect that to be incorrect although it does have a higher pH

The chemical that is likely to increase the pH the most when added to the solution is KOH. The correct option is B.

What is pH?

pH is the scale for the measurement of acidity and the basicity of any solution. pH is a scale from 1 to 14. The lowest pH will be highly acidic and the highest pH will be the highest basic.

The lowest the pH, it will donate the highest hydronium ions, and with the highest pH, it will dissociate completely into the solution. KOH dissociates completely into ions.

KOH or potassium hydroxide is a strong base. When the base is added to a solution, it increases its basicity. So it will increase the pH of the solution. All others are acids that will lower the pH of the solution.

Thus, the correct option is B. KOH.

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How does non-random mating cause
evolution?

A. A population that ensures each individual reproduces
causes the population to evolve.
B. When multiple species mate with each other the
population evolves.
C. Individuals choose their mates, meaning that some
individuals pass on their genes and other do not.
D. Individuals that mate with the same individual every
year help evolve their population.

Answers

A. A population that ensures each indivdual reproduces

If you were given the power to control the United States government and policy what changes would you make regarding the environment and how would you fund these? You can consider your response to the question and/or include other issues.

Answers

Answer:

i would probably fund different jails using taxes. there's absolutely no reason someone who accidently committed tax fraud should be sitting in the same cell as aconvicted murderer. & abd I would make harder consequences for hate crimes. like jail time.

What is the effect of these currents on Earth's temperatures?

Answers

Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.

You classified organisms based on anatomical structure and development. Scientists also use DNA to classify organisms. Considering the basic process of evolution, why do you think it’s important to also consider DNA and gene patterns during the classification of organisms?

Answers

Answer:

By studying genetics and DNA, we can get the best idea of how species are related to each other, and therefore how to classify them. The genetic code of a species is not fixed, however. It changes over time! This is why we also need to factor in evolution.

It is important to also consider DNA and gene patterns during the classification of organisms because,

Through genetics and DNA study, we can get the idea of how species are related to each other and how to classify them. The genetic code of a species is not fixed. So, it need in evolution.

How organism classified ?The organism classified on the basis of shared characteristics.The classification of living organism includes seven levels, kingdom, phylum, classes, order, families, genus and species.

What is evolution?It is witness in the living species and change in heritable traits of biological population over successive generation.The process of development of complex organism from simpler one with time is called an evolution.

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Which of the following factors would LIMIT carrying capacity?
A. Far from factories or roads
B. A large nearby river
C. Abundant food
D. A small space to live in

Answers

Answer:

D. A small space to live in

Explanation:

Having a small space to live in would directly limit carrying capacity.

Since there is a small space, only a few organisms would be able to live in that space.

This means that carrying capacity is limited, because the space does not have enough room to sustain more people.

So, the correct answer is D. A small space to live in

The liver develops: as a ventral outgrowth of the embryonic foregut. incorporates both endodermal and mesodermal components. develops in the ventral mesentery. is connected to the stomach by the lesser omentum. All of the above.

Answers

Answer: All of the above.

Explanation:

The liver is simply the largest solid organ in the body and it can be found below the rib cage in the upper abdomen by the right. It's function is to maintain the blood sugar, regulate blood clotting and remove toxins from the blood.

It should be noted that the liver develops as a ventral outgrowth of the embryonic foregut. It also helps in the incorporation of both the endodermal and the mesodermal components. Furthermore, it's developed in the ventral mesentery and is connected to the stomach by the lesser omentum.

Therefore, all of the above options are correct.

A 55-year-old male is sent to your office to have an esophagogastroduodenoscopy. He is a heavy drinker and smoker who also consumes spicy foods on a daily basis. He is quite anxious about having the procedure performed and is afraid he might choke during insertion of the scope. His father and younger brother were both diagnosed with esophageal cancer. His father died, but the brother was just recently diagnosed and is taking chemotherapy.
A. List the risk factors the patient has for developing esophageal cancer.
B. How might you calm the patient's fears about the procedure?

Answers

Answer and Explanation:

A. The risk factors for this patient are age, family history, and smoking and alcoholism. That's because, most cases of esophageal cancer are detected at age 55 years. We must not forget that cancer is a disease with great genetic potential, which means that, as the father and brother of this patient had this type of cancer, this patient has a high probability of developing the same cancer. Furthermore, the constant consumption of cigarettes doubles the risk of developing esophageal cancer. This risk is also increased by alcoholism.

B. To calm the patient down, I would say that there is a very small and almost non-existent risk that he will choke or even feel the endoscopy insertion, as the entire procedure is done with the patient anesthetized and sedated.

The risk factors the patient has for developing esophageal cancer as well as how you can calm the patients fears about the procedure are as follows

A) Risk factors include

People between the age of 45 and 70 have the more risk of esophageal cancer.

If the patient has genetic signs of cancer from the past generations may have highest risk of esophageal cancer.

Males have more risk than women that is 3 to 4 times to develop esophageal cancer.

Alcohol consumption also increases the risk of esophageal cancer.

Too much weight or obesity increases the risk of esophageal cancer.

Deficiency in nutrients, vitamins and minerals can increase risk of esophageal cancer.

B) Calming the patients fears

Make the patient be happy and stress free.

Do exercise which produces mood boost endorphins that get rid of worries and stress.

Stay positive, being friendly keep good health.

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ASAP
A species of Coral snake has a red, yellow and black stripe pattern. One
gene controls if the stripes are thick or thin. Thin (T) is dominant over
thick (t). If two snakes heterozygous for this gene are crossed, what will
be the genotype(s) of their offspring? You may need to use a Punnett
square to answer the question.
Question Progress
OA. TT and Tt
B. TT, Tt, and tt
C. TT and tt
D. All Tt

Answers

B . , because I remember this

The genetic attributes of the organism are determined by the genotype. The cross of the heterozygous genes in Coral snakes results in offsprings with TT, Tt, and tt. Thus, option B is correct.

What are genes?

Genes are the functional and physical basis of the inheritance that passes from generation to offspring with various traits and attributes. The gene contains a recessive and a dominant allele.

Heterozygous genes are represented as Tt as it contains one dominant and one recessive allele. The cross between the two heterozygous (Tt) Coral snakes is attached to the image below.

From the cross, it can be seen that 75 % of the coral snakes have thin strips while the 25 % of the species have thick strips. The ratios are:

Genotype = 1 : 2 : 1

Phenotype = 1 : 3

Therefore, option b. the genotype(s) of the offspring will be TT, Tt, and tt.

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Which of these is the best definition of sustainable development?
A. Development that makes sure buildings are strong enough to sustain large hurricanes and earthquakes
B. Development that's typical of underdeveloped nations that derive their products directly from nature
C. Development that's supported by public opinion
D. Development that ensures the protection of the environment in the long term

Answers

Answer:

option D

Explanation:

is the correct answer

Development which basically ensures the protection of the environment in the long term is sustainable development. The correct option is D.

What is sustainable development?

Sustainable development is defined as growth that fulfills the requirements of the moment without jeopardizing future generations' capacity to meet their own needs.

The financial, social, and environmental measurements of sustainable development are examined.

The authors contend that material-intensive conventional productivity recovery is unsustainable in the long term unless environmental and social factors are prioritized equally.

Environmental protection aims to preserve as well as restore a healthy natural environment.

Sustainable development incorporates ecologic, social, and economic goals in order to achieve long-term equitable growth that benefits both the present and the future.

Thus, the correct option is D.

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If the observed genotypes in a given population do not fit those predicted by the Hardy-Weinberg equation, it could mean that..

Answers

Answer:

C

Explanation:

gene greatly affects the survival of organisms and if there is a change in the genetic makeup if this organism it leads to mutation

Which of these would have the lowest kinetic energy?

Answers

Are there options too? If yes, then plz provide the options too, the next time you ask :) . Solids would have the lowest kinetic energy and gases have least kinetic energy.

You didn’t provide choices to choose from, but Solid particles have the least kinetic energy while Gas particles have the greatest amount
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