• Integration of the stem with the surrounding bone would be desirable, as it would better fix the implant into the surrounding tissue.
• Integration at the joint space would be undesirable, as it could impart movement.
What is femoral stem?
The load-bearing section of the implant is the femoral stem component, which replaces a sizable piece of the femur's bone. It must have a Young's Modulus similar to cortical bone's in order to support this load.
Despite the fact that hydroxyapatite ceramics make up 70% of bone mass, these materials are far too brittle to be used for femoral stem replacements. Polymers are also inappropriate because of their propensity for creep and fatigue.
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If a mutation in the DNA group of an organism results in the replacement of an amino acid containing a polar r-group with another amino acid containing a nonpolar R-group, how might the structure of the protein be affected?
The primary structure of proteins would change as a result of these substitutions because the sequence of the amino acid chain would be altered.
Because of the decrease in amino acids, the replacement would affect the amount and placement of hydrogen bonds in the secondary structure. Because of the addition of the polar R-group, the tertiary structure's hydrophobic bonds would change. Because of the replacements, the quarternary structure would change and take on a new shape.
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You know that alleles are alternative versions of a gene. What makes alleles different from each other?.
The differences in the linear order of nucleotides make alleles different from each other, thereby involving different gene sequences which may also be linked to differential phenotypes.
What is an allele?An allele is a gene variant that is found in the same chromosome location (i.e. locus). The gene variants or alleles are different because they have different nucleotide sequences, which may produce differences in a phenotype.
Therefore, with this data, we can see that alleles are different forms of a gene associated with distinct nucleotide sequences, which may be associated with differences in a given phenotype.
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Which of the following conclusions about the radiolabeled amino acid is best supported by the results of the experiment?
A. It was mostly incorporated into nucleic acids that store the biological information.
B. It was mostly incorporated into proteins that regulate and manage metabolic reactions.
C. It was mostly incorporated into lipids that help separate cells from their surrounding environment.
D. It was mostly incorporated into carbohydrates that form protective structures outside the cells.
It was mostly incorporated into proteins that regulate and manage metabolic reactions are conclusions about the radiolabeled amino acid.
Proteins are made up of amino acid molecules. The components of life are proteins and amino acids. Amino acids remain after proteins have been digested or broken down. The human body creates proteins from amino acids to support the body:
Deconstruct food, Grow, mending bodily tissue, perform numerous other bodily tasks, The body can generate energy from amino acids as well.
Three categories are used to organize amino acids:
Important amino acids
Unneeded amino acids
amino acids with conditions
The creation of body protein and other vital nitrogen-containing substances like creatine, peptide hormones, and certain neurotransmitters depends on amino acids. The biological need is for amino acids, even though allowances are portrayed as protein.
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k leak channels are found in the plasma membrane. these channels open and close in an unregulated, random fashion. what do they accomplish in a resting cell
K+ ions can readily exit the cell through K+ leak channels in accordance with the K+ concentration gradient created by pumps. Theoretically, these channels would allow K+ to enter the cell if there was a higher concentration of the ion outside the cell.
Do potassium channels that are leaky ever close?While potassium leak channels enable potassium ions to permeate outside the cell, sodium leak channels further enhance the influx of sodium ions. The leak channels are constantly open, regardless of whether the neuron is at the resting membrane potential, depolarizing, repolarizing, or hyperpolarizing.
Ions can only travel through the membrane through a certain ion channel when it is open, according to an ion channel. The ion goes down its concentration gradient from high to low as a result of the ion channel opening; in this situation, K+ flows from the inside (intracellular area) to the outside (extracellular region).
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Scientists use modern technology to clone a sheep. This method affects which genetic traits the offspring would inherit from its parent.
What percentage of the parent's traits would the offspring inherit?
a. 25%
b. 50%
C.75%
D.100%
Answer: D 100%
Explanation: A clone is an individual that was grown from a single cell of the parent, so that means that they are the same.
The amoeba is a single-celled protist that is found in pond water or lakes. The genus Chaos contains some of the largest individuals. Shown below is a representative of the species, Chaos carolinensis. Note that the shape of an amoeba is irregular. In fact, the word amoeba means "change." Amoebas move by stretching their cytoplasm into extensions called pseudopodia.
2. How does the shape of the amoeba allow it to become much larger than other cells?
Answer:
By the use of one of its organelles called pseudopodia
71) the most likely cause for the shift in caterpillar peak mass is a) pesticide use. b) earlier migration returns of flycatchers. c) an innate change of biological clock by caterpillars. d) global warming. e) a decrease in the amount of calcium in the ecosystem.
The most likely cause for the shift in caterpillar peak mass is pesticide use.
How do you keep caterpillars in check?
Picking caterpillars off plants and dropping them into a bucket of soapy water or squeezing them is one of the easiest methods for controlling them. This technique takes time and persistence, and not everyone enjoys being hands-on with pest control. Another possibility is to encompass crops with insect-resistant fabrics.
The mode of action of a pesticide is defined as its action at its target site. In other words, a pesticide's mode of action is the method by which it causes physiological disruption at its target site.
Therefore, the concepts of pesticide class, target site, and mode of action are inextricably linked to the cause of the shift in caterpillar peak mass.
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When energy from food is in short supply, the body?
When the energy from the food is in short supply, the body breakdown its stored triglycerides and releases fatty acids for energy.
What is Energy?Energy is the ability to do work which exists in different forms. It follows the law of conservation which states that Energy is neither created nor destroyed, it can be transferred from one form to another.
Humans obtain energy from these molecules -carbohydrates, lipids, and proteins where the potential chemical energy of these molecules is transformed into other forms, such as thermal, kinetic, and other chemical forms of the energy.
These 3 molecules are called as fuel molecules. The energy of the food is expressed in Calorie(C). Major source of energy is Carbohydrates but when there is shortage in food supply lipids provides the energy.
So, when the energy from the food is in short supply, the body breakdown its stored triglycerides and releases fatty acids for energy.
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what is peptide bond
Answer:
What is peptide bond? Well a peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O).
Explanation:
Answer:
A peptide bond is a chemicle bond formed between two molecules when the carboxylic group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water.
______ is nondestructive and creates radioactive decay paths than can be identified and used to date archeological specimens, gunshot residue, arsenic in hair, and geographic locations
Radioactive decay is nondestructive and creates radioactive decay paths that can be identified and used to date archeological specimen, etc.
What is radioactive decay ?Ionizing radiation is produced by radioactive decay. Ionizing radiation alters the atoms in living things, which causes damage to tissue and genes. Alpha particles may be present in the released ionizing radiation.
Atomic nuclear decay is significant because it produces radioactivity. As a result, it is a process that can be used to produce energy and in medicine. Satellites, medical imaging, individualized cancer treatments, radiometric dating, and investigations into the nature and origin of things all benefit from radioactivity.
As a result, radioactivity is nondestructive and produces radioactive decay pathways that can be recognized and used to date objects like archeological specimens, gunshot residue, arsenic in hair, and geographic locations..
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Which statement best accounts for the changing levels of bison in relation to rabbit population levels?
1. What is the difference between a population, a community, and an ecosystem?
2. What is the difference between a niche and a habitat?
3. Why are the roles in different ecosystems the same but the species that fill them often different?
4. Why is a food web a better representation of the feeding relationships of organisms than a food chain?
5. Why does a predator kill its prey but a parasite rarely kills its host?
6. How can carbon cycle very quickly from the atmosphere and then back into the atmosphere?
7. Describe one way that carbon can be stored for a short time in the natural cycle.
8. Describe two ways that carbon can be stored for a very long time in the natural cycle.
9. Describe two ways that humans interfere with the natural carbon cycle.
10. Describe two important functions for carbon dioxide in the atmosphere.
Answer:
population is number of people in a city state etc
community is what the people are like in a town
ecosystem is like jungle rainforest grasslands etc...
Explanation:
Which of the following statements regarding angina pectoris is TRUE?
A) It can be brought on by exertion or stress.
B) It is generally relieved by over-the-counter medications.
C) It results in death of myocardial cells.
D) It generally lasts 30 to 60 minutes.
It can be brought on by exertion or stress regarding angina pectoris.
The term "exertion" refers to the actual or perceived consumption of energy. Exertion is typically associated with a difficult or expensive effort that produces force, initiates motion, or requires the completion of work.
An intense physical activity that results in cardiovascular stress or a sympathetic nerve reaction is an example of what is meant by exertion physically. This can involve ongoing or sporadic effort.
The body needs to modify its oxygen absorption during exercise, speed up its heart rate, and automatically check the levels of blood lactate. Cardio-respiratory, musculoskeletal, and metabolic strength are all mediating factors in physical exertion. This frequently correlates to a force output followed by a refractory period of inactivity.
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After trees pull water in through their roots, the water must move up to their leaves for photosynthesis to occur. Since the water molecules cling to each other and to the inner surface of the plant's vascular tissues, the water pulls itself up through the tree by capillary action. Which property of water molecules allows them to cling together?
Answer:
Water has an amazing ability to adhere (stick) to itself and to other substances. The property of cohesion describes the ability of water molecules to be attracted to other water molecules, which allows water to be a "sticky" liquid
Nutrients encourage the growth of blue-green algae. The process of nutrient enrichment in a waterway is called.
Answer:
eutrophication
Humans have promoted the evolution of insects that are resistant to insecticides by.
What organelle is responsible for the process at the top of the diagram?
The process shown at the top of the diagram is called photosynthesis. It is photosynthesis because the diagram shows that it is the process that involves sunlight. This process occur in a specialized organelle that contains chlorophyll (that is responsible for photosynthesis). This membrane is shown on the diagram and it is called chloroplast.
The coils of a radiator provide a large surface area from which heat is radiated into a room. Which organelles have a structure similar to that of a radiator? How is their structure related to their function? Answer in 5 to 7 sentences
With more surface area, the cell may more effectively use the transport of nutrients and heat into its interior organelles.
What Are in Cell Organelles?An organelle is a subcellular structure that, like an organ in the body, has one or more specific tasks to carry out within the cell. The nucleus, which house genetic material, the mitochondria, which generate chemical energy, and the ribosomes, which put together proteins, are some of the more significant cell organelles. Small cytoplasmic structures known as organelles perform tasks required to keep the cell's homeostasis in check. They play a role in a variety of functions, including the synthesis of proteins and secretions, the removal of toxins, and the processing of outside signals.To learn more about Cell Organelles refer :
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The school’s biology class is learning about cell division and how the DNA is copied and divided to form an exact copy of the parent cell. What kind of magnifying tool that could be used to observe the stages of mitosis in an onion cell?
Magnifying lens
Transmission Electron Microscope
Compound light microscope
Scanning electron microscope
Answer:
C. Compound Light Microscope
Explanation:
In pyruvate oxidation, a three-carbon pyruvate molecule is converted to a two-carbon acetyl group. What happened to the other carbon molecule?.
The other carbon molecule accepts two oxygen atoms and is released as carbondioxide.
What is pyruvate oxidation?Pyruvate is a yellowish organic keto acid, 2-oxopropanoic acid, which occurs as an intermediate in many metabolic processes, especially glycolysis.
During glycolysis, simple sugar glucose is degraded to yield pyruvic acid, and ATP as an energy source. The pyruvate enters the mitochondrion of the cell and proceeds in the Krebs cycle.
In the krebs cycle, two molecules of pyruvate are converted into two molecules of acetyl CoA. Two carbons are released as carbon dioxide.
3-carbon pyruvate molecule made in glycolysis loses a carbon to produce a new, 2-carbon molecule called acetyl CoA. The carbon that is removed takes two oxygens from pyruvate with it, and exits the body as carbon dioxide.
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1.
Which type of seismic wave is the fastest moving?
surface waves
S waves
focus waves
P waves
Answer:P waves
Explanation:
P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.
suppose two competing species are more morphologically similar when their ranges are far apart compared to where they compete with each other in the same range. this is an example of...
Character displacement is an example of two competing species are more morphologically similar when their ranges are far apart compared to where they compete with each other in the same range.
Character displacement refers to an evolutionary change that happens when two closely related species coexist in the same environment. Natural selection is more likely to encourage divergence in an organism's morphology, ecology, behavior's, or physiology under such circumstances. The theory was only formally recognized in the middle of the 20th century, but it has been known at least since the English naturalist Charles Darwin (1809–1882) began putting together his case for evolution. Despite the fact that some of the same species were indistinguishable while living allopathically, they discovered that sympatric species possessed a variety of unique characteristics. Because the species were similar, they competed for the same resources, and natural selection preferred those species that competed less, according to Brown and Wilson. As a result, the characters changed.
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Some chemical reactions in cells take place inside vesicles.
a. TRUE
b. FALSE
The statement some chemical reactions in cells take place inside vesicles is TRUE (Option A).
What is a cellular vesicle?A cellular vesicle is a membranous cellular structure that contains chemical substances (e.g. neurotransmitters) produced by the cell, which may remain inside the cell or fuse to the plasma membrane to release the content to the external media.
Therefore, with this information, we can conclude that a cellular vesicle may contain chemical messengers or enzymes such as lysosomes that react inside the vesicle or fuse the plasma membrane to release the content outside the cell.
Complete question:
Choose the correct option. Some chemical reactions in cells take place inside vesicles.
a. TRUE
b. FALSE
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Usually found outside the capsule, ________ protect the articular cartilages and act as packing material for the joint.
Usually found outside the capsule, fat pads protect the articular cartilage and act as packing material for the joint.
Subcutaneous fat cells are clustered together to form fat pads. They might be discovered elsewhere in the body in addition to the face.
These fat pads act as cushions to absorb shock.
What are Articular cartilages?
The smooth, white tissue that lines the ends of bones where they meet to form joints is called articular cartilage. It is easier to move when our joints have healthy cartilage. It makes it possible for the bones to move relatively freely past one another. An injury or ordinary wear and tear can harm articular cartilage.
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Which statements about sex-limited traits are true?
Genes for the trait are present in both genders.
Growing a beard in males is an example of a sex-limited trait.
The traits aren’t expressed physically.
Developing green eyes is an example of a sex-limited trait.
Answer:
2
Explanation:
if I'm wrong the green eye thing is 100% wrong
in the experiment the uptake of oxygen during aerobic respiration why did the oil drop move towards the container?
Living things utilize oxygen for aerobic respiration by absorbing it from the environment. In the respirometer experiment, the oil drop moves toward the container as the organisms breathe in oxygen.
What is aerobic respiration?
In the presence of oxygen, cells undergo cellular respiration, which is how energy from food is produced. Most plants, animals, birds, humans, and other mammals regularly engage in this sort of respiration. As byproducts of this process, water and carbon dioxide are created.
With a respirometer, it is possible to examine how changing the temperature affects the breathing rate. To gauge the rate of breathing, respirometers are utilized. The oil drop indicates the movement of the liquid inside the tube. It moves to the deficit side, showing the requirement for oxygen.
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In goats, a recessive gene causes the goats to "faint" when they are startled. A farmer breeds two goats (that
have never fainted) and their first offspring faints two days after its birth. What must the parent's genotypes
have been? Show the cross to prove it.
Answer:
In goats, a recessive gene causes the goats to "faint" when they are startled. A farmer breeds two goats (that have never fainted) and their first offspring faints two days after its birth.
Explanation:
Dehydration is the most common cause of fainting in children. Not drinking enough fluids also reduces blood volume and lowers blood pressure. Standing still for a long time in one place. This can cause the blood to pool in the legs because of gravity or standing up quickly.Because the "tester" individual makes one known type of gamete, the ratios of phenotypes among the progeny of the cross indicate the type and frequencies of gametes made by the individual with the unknown genotype. Once you know the gametes that this individual produces, you can "reconstruct" the individual's genotype.
What actions can be taken by governments, industry and business to improve air quality ?
Answer:
Here's what the government can do to tackle air pollution4- Improve industry and municipal waste management. 5- Reduce emissions from household coal and biomass energy systems. 6- Reduce agricultural waste incineration, forest fires and certain agroforestry activities — for example, charcoal production.
help---->
(A1) Which phase of mitosis would you think that Taxol would affect the most?
(B2) Why do you think it affects that phase the most?
(C3) What are some possible problems that a person taking Taxol might have?
(D4) What would be happening to the normal cells trying to perform mitosis if a person is taking Taxol?
1. The phase of mitosis that Taxol would affect the most is M Phase.
2. It affects the M phase the most because Taxol inhibits cell replication by disrupting normal mitotic spindle formation and arresting cell growth in the M phase of the cell cycle is found to inhibit cell proliferation and thus block mitosis.
3. Some possible problems a person taking Taxol might have are Nausea, vomiting, diarrhoea, mouth sores, muscle/joint pain, numbness/tingling/burning of the hands/feet, flushing, dizziness, or drowsiness.
4. The concentration of taxol that suppressed dynamics in interphase cells was found to inhibit cell proliferation and block mitosis by preventing progression from metaphase to anaphase.
Taxol is an anti-mitotic agent that binds to microtubules and stabilizes them against depolymerization; therefore, Taxol inhibits cell replication by disrupting normal mitotic spindle formation and arresting cell growth in the M phase of the cell cycle.
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what would happen if one of your organs no longer work
Answer: The body would gradually lose its ability to maintain homeostasis when one system shut down, and the other systems would follow suit.3.The muscular, nervous, and skeletal systems would be the primary ones working together.
Explanation:
