Answer:
Explanation:
At the NMJ, calcium is responsible for "unlocking" the ligand gated channels, allowing AcH to be released into the synaptic cleft. When AcH binds and the AP moves down the sarcolemma and into the t-tubule, calcium is then released from the sarcoplasmic reticulum into the sarcoplasm. It then binds to the calcium subunit of troponin, causing a confirmational change in tropomyosin, exposing the active sites on actin. This allows the myosin heads to bind, causing muscle contraction.
Which type of stem supports giant trees?
A. herbaceous
B. gummy
C. woody
D. leafy
The type of stem that supports giant trees is woody, which is option C. Woody stems are the type of stems that support giant trees, so the correct option is option c.
Woody stems are characterized by their hardness and rigidity, which are due to the presence of wood tissue. This wood tissue provides structural support and allows the stem to grow thicker and stronger over time. Giant trees, such as oak, maple, pine, and redwood trees, have woody stems that enable them to reach great heights and support their extensive branching systems. Herbaceous stems, on the other hand, are softer and more flexible. So the correct option is option C.
Learn more about the woody stem here.
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You want to determine if the source of fecal contamination is from dairy cows or wild deer. Which antibiotic would give you the most clear results and why
Answer:
Piperacillin and tazobactam, imipenem and cilastatin, or meropenem may be used.
Explanation:
Antibiotics such as piperacillin and tazobactam, imipenem and cilastatin, or meropenem can be used for the treatment of Fecal coliform bacteria that causes fecal contamination. There are some other methods also used to avoid Fecal contamination i.e. boiling of water, treating water with chlorine, or UV disinfection are the methods that are used to reduce Fecal coliform bacterial infection.
Introduction : Scientists who study earth's layers are called geologists. Since they cannot see inside the earth, they use geological clues to help them. These clues are gathered from activities such as volcanoes and earthquakes. From these clues , geologists make inferences about what the inside of Earth actually looks like.
Question: Name the main layers of the Earth from the inside to the surface.
Answer:
Inner core, the outer core, the mantle, and the crust.
Cellular respiration and photosynthesis are similar in that both require
O A. glucose
B. membrane proteins
C. oxygen
O D. carbon dioxide
UBMIT
12
Answer:
If you can choose 2 your answers would be A.Glucose and C.Oxygen but if not try Oxygen.
Which of the following statements is true?
Earth's atmosphere helps it maintain a constant temperature.
Condensation is the process by which water changes from a liquid into a gas.
Plants do not perform respiration.
Animals add water to the atmosphere through photosynthesis.
Earth's atmosphere helps maintain a constant temperature.
Answer:
hello there your answer is A:Earth's atmosphere helps it maintain a constant temperature.
Explanation:
please mark other guy as brainllest.
have a nice day
[o]-[o]
\___/
I will do Brainliest If this is quick and right. (I will figure out brainliest ive never done it before)
epithelial stomach cell>stomach lining tissue>stomach>disgestive system
Is a forest area that has been washed away by a flood a primary or secondary area of succession?
Answer:
I'm pretty sure it's secondary
Explanation:
Secondary succession is a major disturbance such as a fire or a flood
(S)-Zearalenone, a natural product isolated from the fungus Gibberella zeae, exhibits useful biological activity, including antibiotic properties. In a total synthesis of (S)-zearalenone, an intramolecular Stille coupling process was employed as the penultimate procedure.3 The resulting coupling product was then treated with HCl to cleave the OR groups, thereby converting them into OH groups (as seen in Section 13.6), giving (S)-zearalenone. Draw the structure of (S)-zearalenone:
Answer:
Hello attached below is the missing information and solution
Explanation:
Attached below is the structure of ( S ) - Zearalenone as required by the question.
Zearalenone is a estrogenic mycotoxins that is produced by Fusarium fungi
3. When the mRNA is translated, the order of its codons determines the order of amino acids in the resulting polypeptide O a. True O b. False
Answer:
True
Explanation:
Suppose an explorer discovered a unique new species of plant and collected a sample for analysis by a geneticist. The geneticist then isolated chromatin from the plant sample and examined the chromatin using electron microscopy. The chromatin observed was organized in a way that is similar to beads on a string A small amount of nuclease was then added, which was observed to cleave the string into individual beads that each contained 280 bp of DNA.
Histone H1 H2A H2B H3 H4 H7 (new histone)
Percentage 12.5% 25% 25% 0% 26%
After thorough digestion with more nuclease, only a 120 bp fragment of DNA remained attached to a core of histone eins. Analysis of the histone core revealed the data dicated in the table to the right.
Using the data provided, determine the conclusions that the geneticist could make about the likely structure of the nucleosome in the chromatin of this new plant species
A. The nucleosome core contains a heterodimer of the histones H7 and H1
B. The nucleosome core contains two each of histones H2A, H2B, and H4
C. The nucleosome core contains a homodimer of the histones H2A, H2B, and H4
D. The nucleosome core contains one each of histones H1 and H7
E. The nucleosome core histone H7 replaces the standard histone H3
my brain can't process this lol
state how the protein and energy requirements of the following will differ from those of a 16 year old female who does not take much exercise (1) An elderly person (2) a 2 year old child (3) a pregnant women (4) a male athlete
Answer:
Elderly people need a lot of protein but less energy and a pregnant woman need both nutrition enough to cell function and tissue formation of the embryo and more equal does the the 2 year old baby need both the nutrition.
A prospective groom, who is healthy, has a sister with cystic fibrosis (CF), an autosomal recessive disease. Their parents are normal. The brother plans to marry a woman who has no history of CF in her family. What is the probability that they will produce a CF child? They are both Caucasian, and the overall frequency of CF in the Caucasian population is 1/2500—that is, 1 affected child per 2500. (Assume the population meets the Hardy-Weinberg assumptions.)
Answer:
Explanation:
From the given information:
Since the parent are normal; Let assume that their trait is Pp
The affected sister will be recessive in nature, so the trait will be pp
Now, the husband who is the groom will be a carrier with a probability of 2/3 since her sister is affected.
Also, the wife will be carrying a heterozygous trait since she is normal as well.
However, using Hardy-Weinberg assumption:
[tex]q^2 = \dfrac{1}{2500}= 0.0004[/tex]
[tex]q = \sqrt{0.0004}[/tex]
q = 0.02
Recall that:
[tex]p+q =1 \\ p = 1 - q \\p = 1 - 0.02 \\p = 0.98\\[/tex]
Thus, [tex]p^2 = (0.98)^2[/tex]
[tex]p^2 = 0.9604[/tex]
[tex]2pq = 2 \times 0.98 \times 0.022[/tex]
2pq = 0.0392
Finally, the required probability that there will be an affected offspring amongst the family is:
[tex]= \dfrac{1}{4} \times \dfrac{2}{3} \times 0.0392[/tex]
[tex]= \dfrac{1}{153}[/tex]
A cell goes through mitosis every 20 minutes. How many cells will there be after 3 hours?
Answer:
Well since a single cell per 20 minutes, it would be 9 cells in 3 hours.
Explanation:
Well since there’s 60 minutes in an hour and 60/20 is 3
3*3 hours is 9
So 9 cells in 3 hours
A bacteria structure involved in motility.
Answer:
flagella
Explanation:
Thin long thread like structure that help in locomotion in bacteria.
What came first? The chicken, or the egg?
:3
Answer:
easy
Explanation:
the egg obviously
14. Kidneys are filters. As blood passes through the kidney, waste in the form of urine is
left behind. Tubes take the urine from the kidney to a storage bag called the bladder.
What can you conclude about blood leaving the kidney?
A. It moves to the bladder.
B. It has no water left in it.
C. It is ready to be used by the body.
D. It needs to have urine added to it
Answer:
D. It needs to have urine in it
Explanation:
They are located just below the rib cage, one on each side of your spine. Healthy kidneys filter about a half cup of blood every minute, removing wastes and extra water to make urine. The urine flows from the kidneys to the bladder through two thin tubes of muscle called ureters, one on each side of your bladder. The fluid that is filtered out from the blood then travels down a tiny tube-like structure called a tubule. The tubule adjusts the level of salts, water, and wastes that will leave the body in the urine. Filtered blood leaves the kidney through the renal vein and flows back to the heart.
antipyretics such as ibuprofen and acetaminophen work in which of the following manners?
Answer:
Decrease production of prostaglandins
Explanation:
How does the atmosphere help to make Earth livable? Check all that apply.
causes the seasons
contains oxygen
provides warmth
creates important nutrients
blocks harmful energy from the Sun
Answer:
- contains oxygen
- provides warmth
- blocks harmful energy from the Sun
Explanation:
this is the answer hope this helps (^_^)
Answer:
the one above me is right
Explanation:
(I need help will make brainlyest) Which shows the correct order for the classification of species------------------
A) Domain, Kingdom, class, Order, Phylum, Family, Genus, and species-------------------------
B) Domain, Kingdom, Phylum, class, order, Family, Genus, and species--------------------------
C) Domain, Kingdom, Phylum, Class, Order, Family, Species, and Genus------------------------
D) Domain, Kingdom, Phylum, class, order, family, genus, species----------------------------------
How much has the greenhouse gas carbon dioxide increased in the air just in the last few years? ITS DUE IN A FEW HOURS PLEASE HELP!
Answer:
approximately 2.3 parts per million (ppm) per year
Explanation:
In 2019, the global amount of atmospheric carbon dioxide (CO2) has been estimated at approximately 410 parts per million (ppm). These levels are higher than at any time in the last 800,000 years, and it has been estimated that in 2025 the CO2 levels will be higher than at any time in the last 3.3 million years. In 2018, there has been an increase of approx. 2.5 ppm, the same increase observed between 2017 and 2018. Moreover, the average increase of the CO2 levels in the atmosphere between 2009 and 2018 was 2.3 ppm each year.
Which of the following is not correct about diffraction?
Answer:
Diffraction occurs just with electromagnetic waves.
Explanation:
The information that should not be true about diffraction is that it arise with the electromagnetic waves only.
What is diffraction?It is considered as the process where the beam of light or the other system waves should be spread out that leads of passing via the narrow aperture or it should be an across of an edge that should be accompanied by interfering between the formation of the waves that should be generated.
So the above information should be considered.
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Which type of plant lives the longest?
a.annual
b.biennial
c.perennial
d.none of the above
Answer:
c. perennial
Explanation:
A silver maple oak tree is an example of a perennial as it can live hundreds of years
 Which would be worse a change in DNA or a change in mRNA & why
Answer:
i think its DNA
Explanation:
im not sure
Infer how the structure of the root would be impacted in the absence of each of these
structures.
Answer:
I cant see them
Explanation:
Please Provide a picture.
Help me please!!!!!!!!!!!!!!!!!?
Answer:
points .,.
thx .,. Explanation:
Which of the following is undesirable when developing organic compost?
a)treated sawdust
b)decomposition
c)nematodes
d)kitchen detritus
Answer:
C.
Explanation:
nematodes are roundworms and are undesirable
Search using the internet on how you can expand or enhance one's knowledge of animal/fish raising.
Answer:
Fish farming involves raising a variety of aquatic animals, such as fish, mollusks and shrimps in an enclosure such as a tank or pond. With the surge in demand for healthy animal protein the demand for fish and fish products is on the rise. Fish farms have the potential to produce fish for home consumption at about $0.90/lb which is a considerable saving when compared to supermarket prices of over $2.00/lb.
The first step for fish farming is to determine what you are going to do with your full-grown fish. You need to know the purpose, whether you are going to keep fish as a pet or for fish meat. This will decide a lot of things like the space requirements, equipment and capital requirements. If you intend to keep fish as a pet for showcase then a small tank or a backyard small fish farm is sufficient. If you intend to put a small fish farm with one or two ponds then also with a little business mindset you can market 1000 to 2000 lb of fish.
This will also require you to set up a business entity and have a business mindset.The costs associated with raising different types of fish varies because different fish need certain temperature water to live. The type of fish also decides the requirement of equipment and the feed cost. There are lots of laws about raising fish and animals, and even more, stringent laws related to raising animals that are going to be consumed as food.
Before starting fish farms or fish hatchery of any size or type it is advisable to check local laws and the need of permits to do so in your area.Normally you will get a license to operate your fish farm for a year which will be renewable. You need to submit the following documents to apply for the license:
Filled in application form
Sketch or aerial map of the facility layout, including dimensions
Copy of fish health certificate
Copy of stocking permit
Letter of a written permission from the landowner (in case if you are not the landowner)
Explanation
(I truly apologize if this answer is too long)
Question 3 If you had more time or better resources, how could you improve your model to eliminate some of these weaknesses?
Explanation:
I tried to answer but I dont know what you mean im sorry
critically discuss the transport mechanisms across the membrane
Diffusion, osmosis and active transport.
Explanation:
. Diffusion is the movement of substances from a region of high concentration to a region of low concentration across the membrane.
.Osmosis is the movement of water molecules from a hypotonic solution to a hypertonic solution across the membrane.
.Active transport is the movement of substances from a region of low concentration to a region of high concentration across the membrane with the utilization of energy.
What structures make up the male and female reproductive systems?
Answer: The male gonads are the testes. Their location within the scrotum is necessary for the production of viable sperm. The female reproductive system includes the ovaries, uterine tubes, uterus, vagina, accessory glands, and external genital organs. brainliest
Explanation:
