A promising method for repairing critical-size bone lesions is the use of scaffolds with the proper porosity. For the creation and mending of bones, vasculization is necessary. In this study, chitosan and polyhydroxybutyrate (PHB)-based porous biopolymer scaffolds are used to evaluate angiogenesis.
What is Tissue engineering ?Using a combination of cells, engineering, materials techniques, and appropriate biochemical and physicochemical parameters, the biomedical engineering field of tissue engineering can repair, maintain, enhance, or replace several types of biological tissues.
Skin, cartilage, bone, heart valves, and bladder are just a few examples of tissue engineering that are now being used in therapeutic settings. Numerous further examples, including as artificial livers, pancreas, and blood arteries, are still being studied and tested on animals.Learn more about Tissue engineering here:
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when do members of each species compete regularly for resources
What do a banana and a chicken have in common
Answer:
They are both editable
Explanation:
Why are dry land areas not just waterways and wetlands included in a watershed?
Answer:
water is everywhere including dry spots
Give an example of a single trait that is affected by more than one gene.
Answer:
Sometimes a single gene may affect more than one trait. This is called pleiotropy. An example is the gene that codes for the main protein in collagen, a substance that helps form bones. The gene for this protein also affects the ears and eyes.
Explanation:
3. Why is it necessary for the cell to grow and duplicate its DNA before the start of meiosis?
Answer:
Since the cell is dividing it needs two copies of it's DNA. One is kept by the parent cell and the other is passed to the daughter cell..... So this process of duplicating DNA is very important, because the daugher DNA cell will likley die.
Explanation:
What is the nutrient used to petri dishes to grow bacteria?
The genes for the traits that mendel worked with are either all located on different chromosomes or behave as if they were. How did this help mendel recognize the principle of independent assortment?.
Mendel recognized the principle of independent assortment by working with the genes located on different chromosomes as otherwise, his dihybrid crosses would not have produced a 9:3:3:1 ratio for F2 phenotypes.
Mendel's law of independent assortment states that during a dihybrid cross, the assortment of each pair of traits is independent of the other. This means that, during gamete formation, one pair of traits is separated from another pair of traits independently. The genes for the traits that Mendel worked upon were located on different chromosomes or behaved as if they were. This feature helped Mendel to conclude with his finding as a law of independent assortment.
Gregor Mendel performed dihybrid crosses between organisms having two different traits: seed color and seed shape. One parent was homozygous dominant (YYRR: Yellow round) and the other was homozygous recessive (year: green wrinkled) for two different traits. He produced a heterozygous dominant trait ( YyRr: Round yellow) in the F1 progeny. When F1 progeny was self-crossed, he observed that the phenotypic ratio was 9:3:3:1. This means that the F2 progeny resulted in four different combinations of seeds: wrinkled yellow, round yellow, wrinkled green, and wrinkled yellow seeds.
With the genes located on different chromosomes, it was made easier for Mendel to observe the phenotypes in F2 progeny.
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Which best describes how mRNA is produced in a cell?
A. mRNA is made up by lining up RNA nucleotides, using DNA as a template.
B. mRNA is made by duplicating RNA found in the nucleus.
C. mRNA is made by breaking apart DNA and reusing the pieces.
D. mRNA is made by DNA, using RNA nucleotides as a template.
Answer:
d
Explanation:
Tsunamis are the result of
Answer:
Powerful underwater earthquakes.
Explanation:
Answer:
A tsunami is a series of large waves generated by an abrupt movement on the ocean floor that can result from an earthquake, an underwater landslide, a volcanic eruption or - very rarely - a large meteorite strike. However, powerful undersea earthquakes are responsible for most tsunamis
Explanation:
why are fish cold-blooded??? and why animals are warm-blooded
Answer:
Just like reptiles and amphibians.
Explanation:
They get their body temperature from the water that they are in.
gated ion channels gated ion channels are found only on vesicles. open and close in response to a stimulus. move molecules against an electrochemical gradient. require atp hydrolysis.
Gated ion channels are open and close in response to a stimulus.
What is a stimulus?A stimulus in physiology is a perceptible alteration in the physical or chemical composition of an organism's internal or external environment. Sensitivity refers to an organism's or organ's capacity to recognize external stimuli and respond appropriately (excitability). As with touch receptors in the skin or light receptors in the eyes, sensory receptors can pick up information from both within and outside the body. Chemoreceptors and mechanoreceptors are examples of internal sensory receptors. A stimulus can trigger a response via stimulus transduction when it is recognized by a sensory receptor.
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Dose anyone know if I did this right??
Answer:
yea, I got that on my document test I got it wrong but the correction was the exact how you did it, good job
The saliva in your mouth contains amylase. Amylase is an enzyme that breaks down starch and glycogen into glucose, simple sugars.
The sequence of amino acids in the amylase is an example of which level of protein structure
The picture shows soil that has become compacted.
What is the most likely direct result when soil becomes compacted by human
use?
Answer:D
Explanation:
santosh khanal bacteriological profile in urinary tract infection and their antibiotic susceptibility pattern
In order to ascertain the prevalence and pattern of antibiotic susceptibility of uropathogens among patients at Bharatpur Hospital, this study was carried out.
An increased prevalence of antibiotic resistance among UTI patients signals the need for ongoing surveillance to ensure effective infection control. It can be advised that women, in particular, be aware of proper hygiene practises and use antibiotics sparingly when necessary.
What is Urinary tract infection ?Urine that seems to be hazy. Having urine that is crimson, bright pink, or coke-colored indicates that there is blood in the urine. urine that smells strongly. Women who experience pelvic pain typically experience it in the centre of the pelvis and near the pubic bone.
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What would happen if the earth gained .5% more oxygen
Answer:
answer: we
all die the end
The law of conservation of energy states that
Answer:
According to the law of conservation of energy, energy cannot be created or destroyed, although it can be changed from one form to another. KE + PE = constant.
Explanation:
hope this helps! mark me brailyest plzz:D
Plss answer I need it. Thank you
please see the attached images. Hope this helps you.
i need to know what lights to mix together to get dark gray????
Answer:
A pure gray is a combination of white and black. However, you can get a grayish-brown shade by mixing red, yellow, and blue. Use more blue to get a cooler “color gray” or more red if you want a warmer color. Hope this is what your looking for.
Explanation:
Brainliest please?
Answer:
A pure gray is a combination of white and black. Add more black than white for it to be dark gray.
Explanation:
TRUE or FALSE: There is more available oxygen in the water vs the air?
do humans have eucaryotic cells
Answer: yes
Explanation:
Answer: Yes
Explanation: Cells contain 3 feautres cytoskeleton,organelles surrounded by a nuclear envelope so their called euraryotic cells so yes we do contain them.
In a circuit diagram, what does this symbol represent?
a resistor
a light bulb
a battery
a switch
Answer:
D
Explanation:
Question: are we all edge users on this website? lol
In a circuit diagram, the given image represents the symbol of an electrical switch. Thus, the correct option is D.
What is a Circuit diagram?A circuit diagram may be defined as a graphical representation of an electrical circuit. It consists of a bulb, battery, switch, etc. along with the utilization of a voltmeter, ammeter, etc. It overall represents the flow of electric current within it.
A circuit diagram is also known as an electrical diagram, elementary diagram, or electronic schematic. It is a simplified graphical representation of an electrical circuit. It expresses the relative positions of all the components and their connections to one another. It is often utilized in order to visually represent the circuit to an electrician.
Therefore, in a circuit diagram, the given image represents the symbol of an electrical switch. Thus, the correct option is D.
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Your question seems incomplete. The most probable complete question is as follows:
In a circuit diagram, what does this symbol represent in the image given below?
a resistora light bulba batterya switchHow many times do cells undergo Mitosis in order to become a gamete?
Answer:
two
Explanation:
When a cell divides by way of mitosis, it produces two clones of itself, each with the same number of chromosomes. When a cell divides by way of meiosis, it produces four cells, called gametes.
Answer:
Cells do not undergo mitosis to become gametes although Somatic Cells go through Mieosis 1 & 2 to become gametes.
Explanation:
Specifically a somatic cell is split twice where on parent cell ends up into 4 daughter cells through Meiosis 1 and 2
Mitosis produces the exact same cell so if you did mitosis on a somatic cell it would never happen. But if you did it on a cell already a gamete it would only take one division
looking under a microscope, you note that the cell is a prokaryote. how do you know?
it lacks the cell membrane
it lacks nucleus
it lacks genetic material
it lacks cytoplasm
Answer:
It lacks nucleus.
Explanation:
Prokaryotic: cells that lack a true nucleus or membrane bound organelles.
Pro- before Karyo- Nucleuswhich is a chamber that receives blood into the heart and drives it into a vebtriclr
Answer:
Atrium,
Explanation: in vertebrates and the higher invertebrates, heart chamber that receives blood into the heart and drives it into a ventricle, or chamber, for pumping blood away from the heart.
Answer:
The Atrium receives blood into the heart and drives it into a ventricle.
Explanation:
I hope this helps! :)
define the term gene mutation
Answer:
gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes
Explanation:
need thanks and make me brainiest if it helps you
Answer:
Gene mutation is a genetic change in base sequences of DNA.
Lesson Worksheet
Multiple Choice
Circle the letter of the correct choice.
1 Which of the following is the basic unit of matter?
molecule
chemical compound
atom
nucleus
2 Water is an example of a(n)
atom
molecule
ion
native element
3 An atom is only an ion if it has more or less
neutrons than electrons
protons than neutrons
neutrons than protons
electrons than protons
4 An example of a pure element is
table salt
silicon dioxide
sulfur
calcium carbonate
5 The crystal shape of a mineral
shows how the atoms are arranged
will always be the same if it is made from the same atoms
can usually only be seen under a microscope
can help account for how hard or brittle a mineral is
True or False
Write true if the statement is true or false if the statement is false.
_______ 6. A molecule is the smallest unit of an element.
_______ 7. Protons and electrons are found in the nucleus of an atom.
_______ 8. Halides (salts) make up the largest group of minerals on Earth.
_______ 9. Coal and diamonds are different minerals because they have a different structures.
_______ 10. In a crystal, the atoms are arranged in a pattern.
Fill in the Blanks
Fill in the blank with the term that best completes the sentence.
11. 90% of Earth’s crust is made of minerals in the group called a(n) ______________________.
12. The _______________ makeup of a material is the different atoms and molecules that it is composed of.
13. Even though calcium carbonate is made by marine animals, it is still ____________________.
14. ___________________ is the substance of which physical objects are made.
15. Electrically neutral particles are called _________________.
Short Answer
Answer:
1. atom
2.
3. electrons than protons
4. salt
5.
6. false
7. true
8. false
9. false
10. true
11. silicate
12. compound?
13.
14. energy
15. neutrons
Explanation:
those are my best answers I'm pretty sure about 12 but not positive and I didn't know about 2, 5 or 13. I hope it still helped though
60 POINTS!! PLEASE HELP!!When the level of blood testosterone has increased past its set point, a negative feedback signal will be sent to the hypothalamus.
Based on the diagram, what will be the result of this signal?
A) The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will decrease.
B)The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, follicle-stimulating hormone will no longer be produced and testosterone levels will start to decrease.
C)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will increase.
D)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will be inhibited and testosterone levels will decrease.
Answer:
c
Explanation:
Please answer quickly!
Answer:
BB
Explanation:
Sorry if I'm wrong Lol..
_________ ( spores / fragments ) are microscopic single- celled or several - celled reproductive bodies that are mostly spherical in shape.
Answer:
Spores
Explanation:
please mark me brainliest and 5 star