What are the components of the extracellular matrix of bone? Blood? Describe how these different matrices contribute to the different functions of bone and blood?
Answer:
The Bone Extracellular Matrix in Bone Formation and Regeneration
Explanation:
Bone regeneration repairs bone tissue lost due to trauma, fractures, and tumors, or absent due to congenital disorders. The extracellular matrix (ECM) is an intricate dynamic bio-environment with precisely regulated mechanical and biochemical properties. In bone, ECMs are involved in regulating cell adhesion, proliferation, and responses to growth factors, differentiation, and ultimately, the functional characteristics of the mature bone. Bone ECM can induce the production of new bone by osteoblast-lineage cells, such as MSCs, osteoblasts, and osteocytes and the absorption of bone by osteoclasts. With the rapid development of bone regenerative medicine, the osteoinductive, osteoconductive, and osteogenic potential of ECM-based scaffolds has attracted increasing attention.
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What is a sacrolemma?
Answer:
the fine transparent tubular sheath which envelops the fibres of skeletal muscles.
Consider the factors that affect muscular strength. Read each scenario and then identify each label into the appropriate category based on whether each would result in a stronger or weaker muscle contraction.
a. Potassium accumulate in the sarcoplasm
b. Increase in muscle belly circumference
c. Lesser proportion of motor neurons to muscle fibres
d. Begin contractions with muscle already 50% contraction
e. Lower sarcoplasm pH
f. Increased stimulus frequency.
g. Circular arrangement of muscle fascicles
h. increased requirement.
Answer:
1. Weaker contraction:
a. Potassium accumulate in the sarcoplasm
d. Begin contractions with muscle already 50% contraction
e. Lower sarcoplasm pH
g. Circular arrangement of muscle fascicles
2. Stronger Contraction
b. Increase in muscle belly circumference
c. Lesser proportion of motor neurons to muscle fibres
f. Increased stimulus frequency.
h. increased requirement.
Explanation:
Sarcoplasm refers to the cytoplasm of muscle cells which contains ATP, enzymes, and a variety of ions, including potassium (K+). The negative potential required during muscle activity is produced from the disequilibrium of ionic concentrations (mostly Na+ and K+) across the membrane, which is generated through Na+/K+ ATPase pumps. During contraction, a muscle shortens, and thus its circumference increases. The generation of lactic acid is known to lower pH in the sarcoplasm and thus hinder the force and power development of the muscle fibers. Muscle fascicles can be arranged in concentric rings, it is a common pattern in sphincter muscles that modulate the opening and closing of orifices (which have weak contractions). A motor unit refers to a single efferent neuron and all of the muscle fibers it modulates. Each individual muscle fiber is innervated by one motor neuron, whereas a single motor neuron can innervate many muscle fibers. Finally, higher intensity/frequency are known to induce stronger muscular contractions, but also produce a stronger decline in force and cause more rapid muscle fatigue.
help me out with this
I don't know dinosaur I'm sorry
A relationship in which one species kills and consumes another species is known as
predation.
parasitism.
commensalism.
mutualism.
A relationship in which one species kills and consumes another species which is called as the Predation. So, the correct option is A.
What is Predation?Predation is defined as the relationship in which one species kills and consumes another species. It is a type of community relationship in which organisms of one species, also known as predator, consume the tissues of organisms of another species, called prey, which means killing the prey and killing all or most of the prey organisms.
Herbivores are explained as predators in which the prey organism is a plant. Predation is described as the natural way of transferring the energy fixed by plants to higher trophic such as snake eating a frog tiger killing and eating a deer.
Therefore, the correct option is A.
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Explain how the structure of cellulose molecules relates to the molecule function
Explanation:
The cellulose make stems, leaves and branches. So it play an important role in building of tissues. So it give the shape to plant. The molecules of cellulose have hydroxyl group that form hydrogen bonding with other cellulose and prrovide support to plant.
10. What processes found at hot spots will help form the following rocks? (4 points)
A. Metamorphic rocks
B. Igneous rocks
It’s not multiple choice I need a answer for both
Answer:
metamorphic rock
Explanation:
metamorphic rock simply means that the rocks have been geophysically altered. heat is always a primary source for alteratino of rock so the heat ofmolten rock generated by hot spots can easily cause an abundance of metamorphic rocks within the system
Which nutrient cycle is the one that is explained best by photosynthesis
and cellular respiration?
A) Water Cycle
B) Nitrogen Cycle
C) Carbon Cycle
D) Phosphorus Cycle
Answer:
Carbon Cycle the one that is explained best by photosynthesis.
Answer:
The answer is - C) Carbon Cycle
A 5'6", 210 pound, 64 year old man had a physical exam prior to his retirement for corporate work. His blood pressure was greater than 180/115 mmHg on three separate days (normal blood pressure is 120/80). Further examination showed normal to low plasma renin activity, elevated systemic vascular resistance (SVR), x-ray showed left ventricular hypertrophy and retinal hemorrhage and cardiac output was 7.2 L/min (normal is 3.5 to 5.5 L/min). Recommended therapy was weight reduction to his ideal weight, low salt diet. If these life style changes did not change his condition the following medication will be started in the following order: oral diuretics progress to beta blockers and then to a vasodilator.
Required:
a. What is the diagnosis for this individual?
b. Why is it suggested that the patient go on a low sodium diet?
c. Explain the site and mechanism of action of each of these prescribed medications.
Answer:
Explanation:
a.
The individual should be diagnosed for hypertension or high blood pressure.
b.
It is recommended that the patient should take low sodium diet because when sodium or salt enters the blood stream it increases the amount of water or fluids in the blood stream that leads to rise in blood pressure. The blood pressure increases if we take high salt diet due to which arterioles constrict.
c.
Diuretics- Diuretics are the first recommended therapy in treating hypertension. Diuretics such as thizides , pottasium sparing agents. Thiazide acts on distal convoluted tubule that inhibits Na+ and Cl - symporter. Diutetic removes water from body as urine and loss of salt.
Beta blockers - These are antagonists. They block the beta receptors found on the target cell membrane. Beta blockers slows down blood pressure. Atenolol is the beta blocker used for hypertension.
Alpha1 blocker - alpha 1 receptors helps in smooth muscle contraction and vasoconstriction. Vasodilator increases blood flow in the body that are devoid of oxygen that helps to reduce blood pressure.
angiotensin converting enzyme inhibitor - blocks angiotensin converting enzyme that prevents converting angiotensin I to angiotensin II and increases bradykinin levels in the body. These inhibitors helps in lowering blood pressure.
A young plant growing from a seed is called a ...
Answer:
the answer is seedling
If Tyler does not eat a diet that includes essential amino acids, his cells will not be able to build
Answer:
Essential amino acids are constituents for proteins associated with energy production, growth, nutrient absorption, and immunity. Thus, if Tyler does not take a diet having essential amino acids, he will not be able to build some kinds of proteins as amino acids are building blocks for proteins.
The hay included as part of the culture medium provided a food source for bacteria. Bacteria are a good food source for some types of protists.
a. Explain which group(s) of protists would not have survived because they have no way to produce their own food.
b. Explain which group(s) of protists would have survived without this food source.
Answer:
Protozoans → would not have survived because they have no way to produce their own food → HeterotrophsAlgae → would have survived without this food source → HeterotrophsExplanation:
The protist kingdom is composed of two main groups. The principal difference between them is that algae can produce their own food, while protozoans need to ingest other organisms or organic molecules to survive.
Algaes are autotroph Protozoans are heterotrophProtozoans:
Microscopic unicellular organisms, eukaryotic and heterotrophs -predators or detritivores-. Most of them are aquatic free-living organisms, but some species are parasites. They feed on bacteria, other organic wastes, and other microscopic organisms. The phagocytosis process is normally used to ingest the food, invaginating their cell membrane.
Algae:
Eukaryotic micro- or macroscopic organisms. Autotroph and photosynthetic. They might be either unicellular or pluricellular. They use sunlight to synthesize organic matter from water, CO₂, and mineral salts. Unicellular ones can be free-living or associate with others to form colonies. They are part of the phytoplankton and are ingested by heterotrophic organisms. Pluricellular algae do not create real tissues but they compose a tale. The depth at which they inhabit depends on the pigments they produce. All of them inhabit fresh or sea waters.
Hypothesize and diagnose the impact of variability on enzyme ability
disorders of urinary system
Answer:
Bladder infections - (cystitis) usually caused by bacteria.Enlarged prostate - in men, this can make it difficult to empty the bladder.Incontinence - when urine leaks out of the urethra.Kidney infections - when a bladder infection ‘backs up’ the ureters.Kidney stones - caused by infection and high blood levels of calcium.
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Scientific names of organisms consist of___________.
plz i need it
It’s biology someone help
Write any two demerits of local system of measurement.
Answer:
) It's easier for younger people to change than older people. (3) It ignores, and devalues cultural differences, expressions, and idioms, based on imperial measurements. For example: can a British pub be truly British without "Pints of beer"? - "Half a litre of beer" doesn't quite have the same ring to it!
1. cannot be used in international trade.
2. cannot be used in scientific experimemts.....
hey loves, im helping a friend do an assignment because they’re sick and in super confused.
Answer:
See below
Explanation:
Sandstone deposited, limestone deposited, shale deposited, limestone deposited, shale deposited, erosion, igneous rock intrusion, fault along XY
Q.#11. Mitochondria and chloroplasts share structural and functional similarities. Which of the following
do both these organelles have in common?
A. generate ATP
B. create complex molecules
C. contain their own DNA D. are found inside vacuoles
E. are surrounded by a cell wall
Answer:
b.
Explanation:
Both mitochondrial membrane and thylakoid of chloroplast possess phosphorylation for energy production in the form of ATP.
When looking at the genome of an uncultured microbe, the discovery of a(n) ________-encoding gene provides evidence that the microbe can grow in the presence of oxygen. Multiple Choice reductase catalase dehydrogenase ABC-type transporter
Answer:
i dont know man
Explanation:
i just need brainly points man sorry
Catalase is an enzyme observed in organisms exposed to oxygen. This enzyme acts to catalyze the conversion of hydrogen peroxide (H2O2) into water and oxygen.
The discovery of a CATALASE-encoding gene provides evidence that the microbe can grow in the presence of oxygen.Catalase is a key enzyme that protects the cell from oxidative stress damage.Catalase acts together with the enzyme superoxide dismutase, which in turn catalyzes the formation of H2O2 from superoxide radicals.In conclusion, the discovery of a CATALASE-encoding gene provides evidence that the microbe can grow in the presence of oxygen.
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Which of the following findings would lead you to determine that an infant's airway is open
Answer:
blowing air into his/her mouth and checking for an increase in the thoracic region........I GUESS
Recalling Darwin's Theory
QUICK CHECK
Determine whether each statement is true or false according to Darwin's theory.
Organisms within a population must compete for resources to survive.
The least-equipped organisms may not survive.
Over time, inheritance of beneficial variations can change the entire species.
All organisms in a population are equally equipped for survival.
Some organisms will outcompete others.
DONE
Answer: True.
True.
False
False
True
Explanation:
• Organisms within a population must compete for resources to survive. - True
• The least-equipped organisms may not survive. - True
• Over time, inheritance of beneficial variations can change the entire species. - False
• All organisms in a population are equally equipped for survival. - False
• Some organisms will outcompete others. - True
Accordingly to Charles Darwin’s theory of evolution, evolution occurs through natural selection. There are variations on the physical characteristics shown by the individuals in a specie.
The individuals that are more likely to survive are the ones that have the characteristics which are best suited to their environment and are therefore, more likely to survive.
When a new volcanic island is formed, what type of succession would you see? Describe some things that might happen.
Answer:
primary succession
Explanation:
you would start to see bacteria, fungi and lichens grow as the pioneer species.
What would most likely be the pioneer species in a plowed field?
Answer:
Didnt they bring Ox or Oxen along with them to draw carriges and to do heavy lifting.
Assignment: 04.02 The Biosphere
In this lesson, you took a tour of three of our unique aquatic biomes. In this assessment, you will take a virtual field trip to any aquatic ecosystem of your choice and learn about the biotic and abiotic factors that shape it.
A virtual field trip is a Web search of a location you are unable to visit in person. For this virtual trip, pick any sea, lake, bay, or river in the world and research the biotic and abiotic factors that make it unique. Include the following features in your virtual field trip research:
1. the location of your body of water
2. a description of the geography surrounding your body of water
3. the effects of sunlight on the aquatic life inhabiting your body of water
4. the depths and salinity of your body of water and how this shapes the types of aquatic life present
5. the effects of seasonal changes to water temperatures and aquatic life in your body of water
6. predictions or current research on the effects of climate change to your body of water
Once, you’ve gathered your research, share your virtual field trip with us. Include pictures of your aquatic ecosystem and the life within it in your presentation, but make sure to cite the sources of your pictures and research. Please review the student example and rubric for this virtual field trip before continuing.
You may share your field trip in any creative format you would like. Here are a few suggestions:
- video or media presentation
- slide show
- Web page
- illustration that includes research notes If you need would like an assessment outline
55 POINTS PLS HELP
One statement is an example of a scientific observation. Another statement is an example of a scientific explanation. Identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.
Cloning has the potential to
significantly benefit a great many
people, so it should not be
considered immoral or risky.
A scientist thinks that he might
find serious inconsistencies in the
fossil record if he conducts an
excavation in a new location.
The rocks present in western Africa
and eastern South America formed
at the same place and at the
same time.
Even if modern organisms are
found in ancient portions of the
fossil record, this wouldn't challenge
the theory of evolution in any way.
The cloning of organisms is an
exciting area of study, and more
resources should be be devoted
to it.
The age, type, and composition of
ancient rocks in western Africa are
nearly identical to the age, type,
and composition of rocks in
eastern South America.
Answer:
2, 4, and 5 refers to scientific revolution while on the other hand, the remaining statements shows scientific observation.
Explanation:
Cloning has the potential to significantly benefit a great many people, so it should not be considered immoral or risky is refers as scientific observation.
A scientist thinks that he might find serious inconsistencies in the fossil record if he conducts an excavation in a new location is refers scientific explanation because explanation is needed for it.
The rocks present in western Africa and eastern South America formed at the same place and at the same time is scientific observation because the scientists takes the data.
Even if modern organisms are found in ancient portions of the fossil record, this wouldn't challenge the theory of evolution in any way is refers to scientific explanation.
The cloning of organisms is an exciting area of study, and more resources should be be devoted to it so it is refers as scientific explanation.
The age, type, and composition of ancient rocks in western Africa are nearly identical to the age, type, and composition of rocks in eastern South America is scientific observation which is taken by the scientist through research.
Which of the following techniques employs a probe consisting of a labeled, single-stranded DNA of known sequence that can find and bind to a complementary sequence present in a large sample of different DNA sequences?
a. DNA hybridization
b. RFLP
c. PCR
d. DNA sequencing
Answer:
Explanation:
PCR
A trait has two alleles, represented by p and q. If p = 0.89, what is q?
Answer: 0.11
Explanation:
According to the Hardy-Weinberg principle, it's stated that the sum of the two alleles must be 1.
In this case, we've been given that a trait has two alleles, represented by p and q and p is given as 0.89, then the value of P will be:
p + q = 1
q = 1 - p
q = 1 - 0.89
q = 0.11
Therefore, q is 0.11
What is a working copy of DNA that leaves the nucleus of the cell? And is read by organelles called that connect amino acids together to make proteins
Answer:
Messenger RNA
Explanation:
definition of human rights
Answer: a right that is believed to belong justifiably to every person.
Explanation:
Answer:
Human rights are standards that allow all people to live with dignity, freedom, equality, justice, and peace. Every person has these rights simply because they are human beings.
Explanation:
Human rights are rights inherent to all human beings, regardless of race, sex, nationality, ethnicity, language, religion, or any other status. Human rights include the right to life and liberty, freedom from slavery and torture, freedom of opinion and expression, the right to work and education, and many more.