Answer:
When calcium concentration increases during depolarization, it shifts the conformation of troponin and tropomyosin, and actin is able to associate with myosin. As calcium is taken up again by the sarcoplasmic reticulum the muscle cell relaxes.
The effect that can be associated with increase in concentration of calcium ion in the sarcoplasm is :
Changing of shape and position of tropomyosin.
Can also cause muscles stiffness.
When the Ca2+ concentration become high in the sarcoplasm, there would be change in the position of tropomyosin as result of the binding effect of Ca2+ binds on troponin.Then the tropomyosin will be moved away from myosin binding sites on actin, then a cross bridge will be formedHowever, the effect if this on muscles is muscles stiffness.
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pls help!!! osmosis help needed!!
Answer:
1. 10% 2. 90% 3. 80% 2. Yes 3. Into 3. Swell 6. Hypotonic
Explanation:
1. Given the image, it shows there is 10% glucose outside the cell.
2. Because there is 10% glucose outside the cell, you can automatically conclude that there is 90% of water outside. (You want it to equal to 100%. So, 10 + 90 = 100)
3. Given 20% glucose inside the cell based on the image, you can conclude that there is 80% water inside the cell.
2. Yes, osmosis will occur. Osmosis is the movement of water from a higher concentration to a lower concentration. In this case, there is more water outside the cell than in. So, yes, osmosis will occur.
3. The water will move into the cell (There's less water inside, and more outside, so of course, the water will move in).
3. The cell will swell, since water is getting moved in.
6. This is a hypotonic solution. Definition of a hypotonic solution: The concentration of solutes outside the cell is less than that of water. Hypotonic solutions always swell, as water moves into it.
Hopes this helps!^^ I tried the best I could at explaining.
Which of the following describes erosion caused by glaciers?(2 points)
It forms big ice chunks.
It changes the temperature.
It happens quickly.
It takes a long time.
Answer:
NUMBER TWO DONE BOIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
Explanation:
If too many pandas are competing for bamboo (their food), what could happen?
Answer:
The correct answer would be - eventually, there will no be enough bamboo for all.
Explanation:
Competition for a single resource usually results in the scarce of the particular resource and eventually, there will be no resources in the end. In this case, it is given that there is too many Panda in a particular area competes for bamboo.
Due to this competition, there will be less bamboo initially, and eventually, there will be not enough bamboo for all the pandas. The correct answer will be - eventually, there will no be enough bamboo for all.
A flood is an example of a ________ because it usually affects all populations in the same way
Answer:
density-independent limiting factor
Explanation:
thats the answer
Answer: density-independent limiting factor
Explanation:
thats the answer trust me
The nucleus of an atom contains at least one
proton.
True or false
Answer:
True
Explanation:
Can anyone help me write hydroelectric essay
INTRODUCTION:
BODY:
CONCLUSION:
Please I really have bad life
Answer:
A competitive firm’s marginal revenue always equals its average revenue and price. This is because the price remains constant over varying levels of output. In a monopoly, because the price changes as the quantity sold changes, marginal revenue diminishes with each additional unit and will always be equal to or less than average revenue. A conclusion is the last paragraph of your essay, or, if you’re writing a really long essay, you might need 2 or 3 paragraphs to conclude. A conclusion typically does one of two things—or, of course, it can do both: Summarizes the argument. Some instructors expect you not to say anything new in your Hydro-power is the energy harnessed from running water-streams, rivers or any other artificial or natural water flow. It is one of the oldest method of energy production. Even in the medieval period, people used to derive energy from water wheels. The contribution of hydel power in the world energy production scenario is immense and ever-increasing.
Hydro-electricity now contributes nearly 7% of global electricity production when only 15.3 percent of the global exploitable hydro-electric potential is being used. Ever increasing awareness of ecology and social costs of hydro-plant construction failed to debar the increasing use of hydro-electricity.
Explanation:
Explanation:
this is just what is in my mind
Answer:
Introduction/Hook- Begin with a question based on the article. Give at least with three reasons of you position. Give your thesis.
Body- Explain three reasons of why is good or bad idea to invest in hydroelectric energy.
Provide evidence and explain it in each paragraph.
Conclusion- This the last chance to convince the reader to agree with your statement. Do not rewrite the reasons. You can restate your thesis.
If it is an argumented essay, provide the counterclaim (the other side opinion)and prove them that your statement is better.( this usually is the last paragraph of the body)
Explanation:
I'm not good at essays, but I know the basics.
I hopes this helps.
how is the mitochondrial DNA (mtDNA) transferred from generation to generation.
Answer:
maternal mtDNA
Explanation:
While nothing but the haploid nucleus remains of the sperm during fertilisation, the ovum still has its mitochondria and other organelles. Mitochondria are capable of division and will divide according to cell's needs.
So it is the maternal mtDNa that gets passed on. Spontaneous mutations can happen at any point ofcourse and get passed on in the same way.
Water, carbon dioxide, oxygen and some other substances can pass through the cell membrane because?
Answer:
Water, carbon dioxide,oxygen and some other substances can pass through the cell membrane because oxygen and carbon dioxide moves across the cell membranes from a simple diffusion a process that does not require any energy input and is driven by differences in concentration on the other side of the cell membrane.
What is the advantage/disadvantage of having an O type blood group? Explain your answer in a hospital situation.
Answer:
O: Type O individuals can donate blood to anyone, because their blood has no antigens. However, they can only receive blood from other type O individuals (because blood with any antigens is seen as foreign).
what is the cell related to chromosome number, and is produced by mitosis STARTING WITH D
Answer:
Diploid
Explanation
Among sexually reproducing organisms, the number of chromosomes in the body (somatic) cells is diploid (2n; a pair of each chromosome)
Mitosis produces 2 diploid cells.
I NEED HELP PLS IF I FAIL MY MOM WILL UNALIVE ME
Answer:
A
sorry for hearing that your mom will kill you
Suppose a mutation occurs within the cells of a Great Blue Heron. The Mutation could be.
how would this affect the cells made from the cell cycle? passage: timmy has a disease that effects his cell cycle, it causes the S phase (part of interphase) to not work correctly.
Answer:
No cells are produced.
Explanation:
If the S phase of cell cycle did not work properly, the cells produced are abnormal or no cells are produced because no extra copy of chromosomes are present for cell division. If there is no extra copy of chromosomes is present in the cell, the cell will not go to the G2 phase and as a result the cell cycle is remain incomplete. So that's why we can say that no cells are produced if S phase did not work properly.
In dense forests, obtaining sunlight for plants can be tricky. Growing on the ground is not always effective for plants because there is not much sunlight hitting the ground. Orchids are epiphytes, or plants that grow on other plants. They grow on branches of trees high up in the canopy. They get more sunlight and have more access to pollinators up in the high branches. Orchids lay their roots on the bark of a tree and obtain nutrients and water from their surrounding environment.
In a short answer, identify and describe the type of symbiotic relationship between orchids and the forest trees, and explain the effect of this interaction on each species involved.
Explanation:
The symbiotic relationship between orchids and trees is called commensalism, which means the orchid and tree host depend on eachother to survive.. The orchid provides the tree with sunlight, (nutrients created by sun- exposure).
the tree provides a solid base for the orchid to climb up the tree, they are dependent on eachother for survival...
The type of symbiotic relationship between orchids and forest trees is commensalism.
What is commensalism?Commensalism is a relationship in which one species benefits while the other is neither helped nor harmed. In this case, orchids benefit from the elevated position and access to sunlight provided by the trees, while the trees are neither helped nor harmed.
The effect of this interaction on orchids is that they are able to thrive in a challenging environment where they would not otherwise survive. The effect on forest trees is neutral, as the orchids do not harm or compete with them for resources. However, the presence of orchids on the tree bark may attract pollinators or other organisms, which could potentially benefit the trees indirectly.
Learn more about commensalism, here:
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20 points someone please help!!!
Answer:7 is 5
not sure what 9 is
Explanation:
A train travels 67 km, north along a straight track in 39 minutes. What is the train's average
velocity in kilometers per minutes?
A. 28Km/mins
B. 1.72Km/mins
C. 0.582Km/mins
D. 106 Km/mins
Answer:
B. 1.72Km/mins
Explanation:
The topic is Mathematics, not Biology but okay!
All you have to do is 67/39 which equals 1.72km/mins.
This is because you have to work out the average speed in kilometres per minute. 39/39 = 1 minute
I hope this helps you!! ^-^
YO PLZZ HELP!!!!!
Lipid synthesis does not occur in any part of the Endoplasmic Reticulum (ER).
TRUE or FALSE:
Answer:
False
Explanation:
The smooth endoplasmic reticulum lacks ribosomes and functions in lipid synthesis but not metabolism, the production of steroid hormones, and detoxification. The smooth endoplasmic reticulum is especially abundant in mammalian liver and gonad cells.
What would most likely result if more farms were developed along river basins in North Carolina
Answer:
Area of river basins, portion in Western North Carolina River Basins Square Miles French Broad 2,830 Yadkin 1,900 Little Tennessee 1,797 Catawba 1,530 6 more rows ...
Explanation:
hopes this helps D:
Answer:
the answer is an increase in water pollution
Diseases can be caused by many different types of organisms, including protozoa. Which of the following diseases is caused by a protozoan?
A. anthrax
B. influenza (flu)
C. malaria
D. tuberculosis
Answer:
Malaria.Explanation:
Plasmodium protozoa causes Malaria and Schistosomiasis.Question 6
Thermal is to heat as _____
is to water.
A. Absorb
B. Dilute
C. Waste
D. Drain
Answer:
drain
Explanation:
thermal is to hear as drain is to water
Answer:
thermal is to heat as dilute is to water
How many types of genes are there? Name them.
Answer:
Where my dear i don't know what you saying
Answer:
30,000the names of some are BcL2-associated Xprotein and BcL2 antagonist/kil 2 and B-cell CLL/ly mphom2 and brain derived nurotrophic factor
which one is the unit of mass
Answer:
the SI unit of mass is Kg
Explanation:
Which statement about the structure of DNA is NOT true?
Long strands of DNA are twisted in the form of a double helix.
Long strands of DNA are twisted in the form of a double helix.
DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.
DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.
DNA is made of linked nucleotides which are each made of a sugar, a phosphate and a nitrogen base.
DNA is made of linked nucleotides which are each made of a sugar, a phosphate and a nitrogen base.
DNA consists of two strands joined together by complementary base pairing.
A woman is found to have 47 chromosomes, including 3 X chromosomes. This condition likely resulted from _________________ during meiosis.
a.) karyotyping
b.) nondisjunction
c.) crossing over
d.) synapsis
Answer:
b.) nondisjunction......
A woman is found to have 47 chromosomes, including 3 X chromosomes. This condition likely resulted from nondisjunction during meiosis.
What do you mean by Chromosomes?Chromosomes may be defined as tiny, threadlike structures inside most cells of every organism, or living thing which carries the genetic information.
The presence of 3 X chromosomes indicates the condition of trisomy which arises as a result of non-disjunction.
When homologous chromosomes fail to separate at meiosis resulting in a germ cell containing 24 chromosomes rather than 23.
Therefore, a woman is found to have 47 chromosomes, including 3 X chromosomes. This condition likely resulted from nondisjunction during meiosis.
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Positive feedback is a control system that sends a signal to ________ a response.
Answer:
increase
Explanation:
hope this helps you :)
how many codons specify 5 amino acids?
Answer:
20, Im not completely sure tho
Explanation:
12 Rachel is analyzing a DNA sample to identify its base pairs. Her results show that
40% of the sample is adenine. Which other base makes up 40% of the sample?
A cytosine
C thymine
B guanine
Duracil
Answer:
thymine
Explanation:
Adenine binds to thymine in a DNA and with uracil in RNA
How would Earth be different without the greenhouse effect?
A. There would be more solar energy reaching Earth.
B. There would be more ice on Earth's surface.
C. The oceans would contain more carbonic acid.
D. The atmosphere would contain more methane.
What type of questions can ice cores answer?
A. What the climate was like on earth in the past
B. Why the climate changed in the past
C.What type of wild-life lived on earth in those times
PLEASE HELP! DUE SOON!!!
What statement is true of channel and carrier proteins?
A. Channel and carrier proteins always move substances from the side of the membrane with the highest concentration to the side with the lowest concentration.
B. Channel and carrier proteins always move substances from the side of the membrane with the lowest concentration to the side with the highest concentration.
C. Channel proteins undergo a shape change, while carrier proteins do not.
Answer:
A
Explanation:
Channel and carrier proteins are both considered facilitated diffusion. We also know that materials do not like to go against the concentration gradient so we can eliminate B.