Answer:
the most durable and tough substance in your body is actually a tissue. Encasing your teeth and helping you chew, bite, and tear your food is your tooth enamel. That's the hardest substance in the human body.
Explanation:
The most durable part of the human body is Tooth Enamel.
What is Tooth Enamel?Tooth enamel is defined as the thin outer covering of the tooth that covers the crown of the tooth. This is the part that we can see outside the gums. This is the outer layer, the enamel is transparent. Dentin is the hard tissue that lies beneath the enamel, and is what gives teeth their color.
Once tooth enamel is damaged, it cannot be restored. Enamel can be restored to some extent by improving its mineral content. Enamel is the durable part of the human body.
While toothpaste and mouthwash can never "rebuild" teeth, they can contribute to this remineralization process.
Thus, the most durable part of the human body is Tooth Enamel.
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what by-product of anaerobic respiration makes this possible
Answer:
The end products of anaerobic respiration are Lactic acid or ethanol and ATP molecules. Anaerobic respiration takes place in the absence of oxygen and is seen in lower animals. During the process of Anaerobic Respiration in prokaryotes, there is a breakdown of glucose to produce energy for cellular activities.
Explanation:
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Pick one sentence or paragraph from the article, and explain how it supports the idea that science is an evolving discipline that depends on repeated testing.
Answer:
From Edmentum:
“Paleontologists used to think that dinosaurs were similar across the continents—at least during the Jurassic period, says Novas. C. diegosuarezi’s mix of features now brings a wrinkle of doubt to that idea.” The paragraph explains that this new dinosaur gives some evidence that the dinosaurs in South America were structurally different from dinosaurs in other areas of the world. According to the paragraph, scientists will need to find and examine more dinosaur fossils from this region before they can support this claim. The claim supports the statement that science requires repeated testing.
Reworded:
“Paleontologists used to think that dinosaurs were similar across the continents—at least during the Jurassic period, says Novas. C. diegosuarezi’s mix of features now brings a wrinkle of doubt to that idea.” Paleontologists used to think all dinosaurs were similar all around the world, but the structure of a specific species of dinosaur made them second guess themselves. It seemed that the dinosaurs in South America were evolving different structures and functions than dinosaurs from other continents. The claim supports that the statement needs more testing.
Explanation:
Answer:According to Novas, "Paleontologists once believed that dinosaurs were identical on all continents, at least during the Jurassic era. The combination of traits on C. diegosuarezi currently casts some doubt on that theory. The structure of a particular species of dinosaur caused paleontologists to reevaluate their previous belief that all dinosaurs were globally identical. It appeared that the architecture and functions of South American dinosaurs were evolving differently from those of dinosaurs from other continents. The claim argues in favor of additional testing for the assertion.
Explanation: This is a hand written answer. NOT SAMPLE ANSWER
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Does galena occur naturally
Answer:
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. ... It is often associated with the minerals sphalerite, calcite and fluorite.
Explanation:
Hope this helps
why is it advantageous for cells to switch to anaerobic fermentation in the absence of oxygen
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How cells extract energy from glucose in the absence of oxygen. In yeast, anaerobic reactions produce alcohol, while in your muscles, they form lactic acid.
it is advantageous for cells to switch to anaerobic fermentation in the absence of oxygen because Anaerobic processes in yeast produce alcohol, whereas they produce lactic acid in your muscles.
What is anaerobic fermentation?
Generally, Once the oxygen is removed from the fermentation vessel and replaced with N2, CO2, etc of the fermentation, anaerobic fermentation begins.
In conclusion, Anaerobic processes in yeast produce alcohol, whereas they produce lactic acid in your muscles.
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Please, could someone help me with this?
1. abortion
2. testing cosmetic products on animals
hope this helps :)
In the stable food chain shown below, what would you expect to happen initially if you were to suddenly double the population of rabbits?
A food pyramid, top to bottom: hawk, snakes, rabbits.
a.
The populations of the other three species would also increase.
b.
The populations of the other three species would decrease.
c.
The grass population would decrease. The snake population and hawk population would increase.
d.
The grass population and hawk population would decrease. The snake population would increase.
Please select the best answer from the choices provided
A
B
C
D
Answer:
she is wrong , its c
Explanation:
The grass population would decrease. The snake population and hawk population would increase.
The correct answer is option C. . If you were to suddenly double the population of rabbits, the grass population would decrease due to overgrazing by the increased rabbit population.
What will happen in result to it ?As a result, the snake population and hawk population would increase due to the increased availability of prey. This is known as a trophic cascade, where changes in one trophic level affect the populations of other trophic levels in the food chain.
Option A and B are unlikely as doubling the population of rabbits would not necessarily cause the populations of the other three species to increase or decrease in a straightforward manner.
Option D is incorrect as there is no direct relationship between the rabbit population and the hawk population in this food chain.
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Please help I do not know what the answer is.
Answer:
On what?
Explanation:
which type of microscopy allows us to clearly view the internal contents of cell structures smaller than 200 nm?
Because the cell structures are so small, to clearly view them, requires a microscope that has a higher power of magnification than light microscopes can prove. This is usually an Electron Microscope.
Electron microscopy (EM) is a technique used to obtain high-resolution images of biological and non-biological specimens. It is often used to investigate the detailed structure of tissues, cells, organelles, and macromolecular complexes. (UMass Chan Med School Website)
put the life cycle of an erythrocyte in order, beginning with their formation in red bone marrow.
Answer:Correct: 1
Erythrocytes form in red bone marrow.
Correct: 4
Hemoglobin is converted to biliverdin.
Correct: 3
Erythrocytes are phagocytized in the liver and
spleen.
Correct: 2
Erythrocytes circulate for 120 days in the bloodstream.
Explanation:
The life cycle of an erythrocyte (red blood cell) involves several stages. Here's the order of the life cycle, beginning with their formation in red bone marrow:
1. Hematopoietic Stem Cell: Erythrocytes are derived from hematopoietic stem cells in the red bone marrow. These stem cells have the potential to differentiate into various types of blood cells, including erythrocytes.
2. Proerythroblast: Hematopoietic stem cells differentiate into proerythroblasts, which are the earliest precursor cells committed to becoming erythrocytes. Proerythroblasts undergo several divisions to produce cells of the erythroblast series.
3. Erythroblast Stages: Erythroblasts progress through several stages of development, including basophilic erythroblast, polychromatic erythroblast, and orthochromatic erythroblast.
4. Reticulocyte Formation: The orthochromatic erythroblast matures into a reticulocyte. Reticulocytes still contain some organelles but lack a nucleus. They are released into the bloodstream and enter circulation.
5. Circulation: Reticulocytes circulate in the bloodstream for about 1-2 days. During this time, they lose their remaining organelles, and their reticulated appearance disappears as they become mature erythrocytes.
6. Mature Erythrocyte: Reticulocytes mature into mature erythrocytes, which are specialized cells optimized for oxygen transport. Erythrocytes have a biconcave shape, lack a nucleus, and are packed with hemoglobin.
7. Functional Period: Mature erythrocytes have a lifespan of about 120 days in circulation. During this time, they transport oxygen from the lungs to body tissues and carry carbon dioxide from tissues to the lungs for exhalation.
8. Removal: Aging or damaged erythrocytes are recognized by macrophages in the spleen, liver, and bone marrow. These macrophages phagocytose the erythrocytes, breaking them down and recycling their components.
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What muscle type is located in blood vessels?
a
cardiac muscle
b
striated muscle
c
skeletal muscle
d
smooth muscle
Answer:
d.smooth muscle
Explanation:
Blood vessels contain only smooth muscle cells. These muscle cells reside within the tunica media along with elastic fibers and connective tissue
Answer:
d smooth muscle
Explanation:
Involuntary muscle that is found within the intestines, throat, uterus, and blood vessel walls.
what is the last structure of the air passageway in your lungs
Answer:
Bronchioles
Explanation:
You inhale through your nose and the air is filtered. It goes down the pharynx. It goes through the larynx. A "door" called the epiglottis opens during breathing. Then it enters the trachea. (windpipe) It goes through the bronchus. The tertiary bronchi branch into fine tubules called bronchioles, the last passageways for air. Air ends its pathway in the ________. (I bet you can guess because you're so smart!) They're surrounded by capillaries that connect the pulmonary arteries and veins. This enables the transfer of oxygen and carbon dioxide.
I hope this helped!!! Good luck on the test/quiz/project/homework/etc. you're working on! If you want I can give you a l!nk to the article I used. If not, it's fine too. Have a great day!
where are the proteins of the electron transport chain located in a eukaryotic cell?
Answer:
In eukaryotes, the electron transport chain is located in the inner mitochondrial membrane. In prokaryotes, it is located within the plasma membrane
74 POINTS!!!!!!!!
Do you think we should attempt to
quantify and assign market values
to ecosystem services and other
entities that have only non-market
values? Why or why not?
Answer:
yes
Explanation:
yes because I like the same thing cuz you just like doing like what you have to do and I did it already and I got it a
the vitamin that poses the greatest risk for toxicity is:
if a single gene has 3 or more alternative forms, this is called
Hi there! Your answer is "multiple alleles."
Have a great rest of your day!
the antibiotic penicillin which made from fungi is harmfull for bacterias?
Answer:
From 1945–1955 the development of penicillin, which is produced by a fungus, along with streptomycin, chloramphenicol, and tetracycline, which are produced by soil bacteria, ushered in the antibiotic age.
Explanation:
Hope it helps you..!
What do the arrows mean on a food web or food chain
Answer: It represents the flow of energy in an ecosystem. It indicates which direction the energy and nutrients will flow. It shows the relationship between organisms.
17. What two headed muscle comes together with the soleus to attach to the heel?
The gastrocnemius muscle
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plz help me on this it’s due today
Answer:
Help with what boo?
which muscle functions in extensions of the digits of the hand?
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Which of the following is NOT likely to be an outcome of building more wind and solar farms?
A: an increase in air temperature
B: an increase in rain
C: a change in wind path
D: a decrease in farming output
Answer: B: an increase in rain
Explanation:
Answer:
an increase in rain
Explanation:
what is the name used to refer to the clogged xylem tissue?
The name used to refer to the clogged xylem tissue is heartwood in contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood has been the tree as the main column of support.
What is xylem?Xylem has been defined as the vascular bundle which has been used to transport water and other minerals from the root part to other parts of the plant. The main function of the xylem and phloem is to transport water and minerals from root to other parts of the plant.
The last common ancestor of the gymnosperms and angiosperms possessed the same characters such as the pollen, seeds, and the vascular tissue.The gymnosperms are a group of plant that are known as seed- producing plants such as Ginkgo, gnetophytes, cycads etc.
Angiosperms has been the plant that produces flowers and having seeds enclosed within their fruit. Gymnosperms have no production of flowers and fruits and they contain bare seeds on the surface of their leaves.
Therefore, The name used to refer to the clogged xylem tissue is heartwood in contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood has been the tree as the main column of support.
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what is the main difference between a mrna and trna?
mRNA is the connection between Gene's and proteins while tRNA provides correct amnio acids to the ribosomes.
PLZ THIS IS URGENT HELP
Which of the following genetic crosses follows the Mendelian inheritance?
A) P generation: brown lab x black lab; F1 generation: yellow lab
B) P generation: A blood x B blood; F1 generation: AB blood
C) P generation: Red-eyed fly x Red-eyed fly; F1 generation: White- eyed fly
D) P generation: Widows peak x straight hair-line; F1 generation: Widows-peak
Explanation:
The key principles of Mendelian inheritance are summed up by Mendel's three laws: the Law of Independent Assortment, Law of Dominance, and Law of Segregation.
PLEASE HELP! ILL MARK YOU AS BRAINLIEST‼️❤️what are the molecules that
result from the breakdown of glucose sugar
and six oxygen molecules?
Answer: ATP (adensoine triphosphate)
Compare the functions of the male and female reproductive systems.
Explanation:
The main difference between male and female reproductive system is that male reproductive system produces and delivers sperms to the female reproductive system whereas female reproductive system facilitates fertilization and develops the baby.
Which example best describes a reflex action?
A. going for a walk outside
B. bending down to lift a heavy object
C. eating food when hungry
D. coughing when the throat is irritated
Answer:
D
Explanation:
coughing when the throat is irritated
Who developed the classification system that contained five levels and two kingdoms?
Aristotle
Linnaeus
Whittaker
Woese
Answer:
Linnaeus
Explanation:
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the plasma membrane of skeletal muscle is called the:
Answer:
Muscle Fiber or the sarcolemma
Explanation:
which contains sarcoplasm, the cytoplasm of muscle cells.