The strong white fibrous material called the periosteum covers the bones.
What is periosteum ?Layers of tissue inside and around your bones include the periosteum, endosteum, and perichondrium. Your bones' outer sheath, known as the periosteum, provides them with blood, nerves, and the cells they need to grow and mend. Your bones' endosteum, a membrane that surrounds the bone marrow in the middle of them,
Three functions of the periosteum have been identified: production of osteocytes and chondrocytes from pluripotent, undifferentiated mesenchymal cells; provision of a scaffold for osteocyte and chondrocyte proliferation; and production of growth factors.Learn more about Periosteum here:
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Active tissues generate carbon dioxide, which diffuses out of the tissue into the bloodstream, to be carried away. is this diffusion into the blood a case of flow up a gradient, or down? explain.
The carbon dioxide is created in the active tissues, which are at the bottom of the concentration gradient and have the highest concentration.
Why is a concentration gradient significant and what does it entail?Understanding how ions and particles flow randomly in a solution or gas depends on the concentration gradient.It is the method used to move particles in a solution from a region of higher concentration to one of lower concentration.What function does the gradient in concentration play in diffusion?Therefore, the concentration gradient symbolises the idea that, during diffusion, molecules move down the concentration gradient in a manner similar to how a ball rolls down a hill. Diffusion rates will increase with increasing concentration gradients. The gradient evens out as the molecules move toward equilibrium.
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When part of a molecule, what is the typical number of bonds and nonbonding pairs of electrons for each of these atoms?.
Answer:This means the halogens are typically just 1 bonding pair and 3 lone pairs.
Explanation:
What type of inheritance accounts for the genotype of the mother being the direct determining factor in the phenotype of the offspring?
Maternal effect type of inheritance accounts for the genotype of the mother being the direct determining factor in the phenotype of the offspring.
Inheritance- The process of genes being passed from parents to children is referred to as inheritance. Genetic qualities are passed down through inheritance from parents to their kids, who receive all of their parents' genetic material.
Gene- The fundamental genetic component transferred from parent to kid. Genes are composed of DNA sequences and are organized sequentially at specified sites on chromosomes in the cell nucleus.
Phenotype- The visible traits of an individual that are the outcome of gene expression; the clinical manifestation of a person with a certain genotype.
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Determine fluid movement when hydrostatic pressure exceeds colloid osmotic pressure at the arteriolar end of the capillary?
Water pushes the capillary by filitration. The internet strain that drives reabsorption is the motion of fluid from the interstitial fluid lower back into the capillarie which is known as osmotic strain ,every now and then called osmotic strain.
The hydrostatic stress of the blood forces fluid the arteriolar ends of capillaries into the interstitial areas of the tissues . that of tissue fluid, water returns via way of means of osmosis to the venular stop of capillaries .
The hydrostatic strain is extra than the osmotic strain, so the internet motion favors water and different solutes being handed into the tissue fluid. At the venous end, the osmotic strain is extra, so the internet motion favors materials being handed lower back into the capillary.
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How could scientists use radioisotopes to study the function of the golgi apparatus?.
Scientists could use radioisotopes to study the function of the Golgi apparatus by tracking the radiolabelled sugars along with proteins in the Golgi apparatus.
Radioisotopes of radiolabelled sugars are attached to proteins within the Golgi apparatus and are used for purpose of function study and are found in eukaryotes which is a membrane-bound organelle. It is made up of cisternae in flattened, stacked pouches. Proteins and lipids are moved, altered, and packaged into vesicles by the Golgi apparatus and delivered to various locations. It is situated near the cell nucleus and the endoplasmic reticulum present in the cytoplasm.
In an experiment to determine the route secreted proteins follow, radioactively labeled amino acids are added to a culture of cells involved in protein synthesis which is in a growing stage. The secretory vesicles have radiolabeled proteins received from the Golgi apparatus, which are joined with the plasma membrane to release outside the cell.
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The pharmacokinetic measurement of plasma volume that is completely cleared of a drug per unit of time is termed?
The pharmacokinetic measurement of plasma volume that is completely cleared of a drug per unit of time is termed as drug clearance.
Pharmacokinetics is defined as the study of the effect of any administered substance like drug or any form of medication into the body. There are four steps for the pharmacokinetics: absorption, distribution, metabolism, and excretion.
Plasma is the fluid present in the blood. It is a colorless liquid consisting of various proteins, fats and other substances. It makes up about 55% of blood's volume. It is the means of transport for the body. Plasma also consists of various immune cells.
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A human develops a fever when ill. A dog pants when overheated.
Which characteristic of life do these examples demonstrate?
A. homeostasis
B. heredity
C. metabolism
D. growth
Worth 69 points
Answer:
a) Homeostasis
Explanation:
These examples represent homeostasis. It is the ability of an organism to regulate its internal environment. Therefore, the option (a) is the correct answer.
viruses are specific to a particular host due to their , which is composed of subunits, or the , which is formed from glycoprotein.
Viruses are specific to a particular host due to their capsid, which is composed of protein subunits, or the spike, which is formed from glycoprotein.
Capsid is the coat the encloses the genetic material. The capsid if made up of protein subunits. These subunits are repetitive in nature and are called protomers. The capsid not only protects the genetic material of the virus, but also aids in its transport to the host cell.
Spike proteins are actually glycoproteins that may occur in the dimeric or trimeric form. One single spike protein is referred to as peplomer. The major role of the spike protein is to help the virus enter into the host cell.
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Inorganic elements that are extracted from the soil by plants and passed up the food chain are known as?
Inorganic elements that are extracted from the soil by plants and passed up the food chain are known a Minerals.
Minerals are inorganic compounds that make up the majority of the soil solution; among those needed by plants for structure and control are nitrogen (N) and potassium (K).Plants nevertheless need inorganic salts, which they take up from the soil around their roots. These salts contain the elements phosphorus (in the form of phosphate), chlorine (as the chloride ion), potassium, sulphur, calcium, magnesium, iron, manganese, boron, copper, and zinc.Group of creatures arranged from producers to consumers in the food chain, as well as prey, predators, scavengers, and decomposers. food chain. noun. each connected food chain within an ecosystem. Likewise known as a feeding cycle.To learn more about Minerals.
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HELP ME ASP I WILL GIVE YOU BRAINLEST AND MORE POINTS HELP ASPPP
(6) The two true statements which describe the mass of an atom's subatomic particles are:-
An electron has a mass of 1/2000 amu (atomic mass unit).A neutron and a proton each have a mass of 1 amu.(7) The three true statements are:-
A neutral atom has the same number of electrons and protons.The building blocks of all matter are atoms.Stuff that takes up space and has mass is known as matter.Atoms are composed of three subatomic particles, i.e. protons, neutrons as well as electrons. Protons are positively charged particles, neutrons are electrically neutral particles whereas, electrons are negatively charged particles.
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There are three swellings that occur at the anterior end of a fluid-filled tube in the developing embryo. these three swellings eventually develop into the adult:__________
There are three swellings that occur at the anterior end of a fluid-filled tube in the developing embryo. These three swellings eventually develop into the adult forebrain, midbrain, and hindbrain.
What is brain?Brain is defined as an important organ of body which controls all the functions of the body and have command on all the body organs.
The outermost part of brain is known as dura mater which consist of a strong membrane layering and it is thick located just beneath the skull and vertebral column. The outermost part or cerebrum has billions of neurons and glia that are responsible for the formation of cerebral cortex, the outermost part.
Whenever body stuck in a dangerous situation, the signal in the form of information is conveyed to brain and the particular part that receives the signal is known as amygdala.
Therefore, These three swellings eventually develop into the adult forebrain, midbrain, and hindbrain.
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Which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts?
Mitochondria and chloroplast have similar DNA, which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts.
According to the endosymbiotic theory, a chloroplast and a mitochondria were the independent prokaryotes. Both can be ingested by a large prokaryote and resist digestion. As a result, they continued as endosymbionts and eventually lost some of their autonomic properties. They divide by binary fission, have their own genetic material, possess 70s ribosomes, and Both include their own transcriptional and translational machinery.
Therefore, considering endosymbiotic origin theory, Both Mitochondria and chloroplast have similar DNA is not a piece of evidence.
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Glutathione is used as a reducing agent (antioxidant) in cells to keep redox enzymes in a reduced state and remove toxic peroxides
a. true
b. false
True. Glutathione is used as a reducing agent (antioxidant) in cells to keep redox enzymes in a reduced state and remove toxic peroxides.
With regard to the reducing properties of glutathione, it plays to exhibit the role of an antioxidant that helps in scavenging electrophilic as well as oxidant species either in a direct way or by catalysis of enzymes. It can directly quench hydroxyl free radicals which are highly reactive, oxygen-centered free radicals, and DNA radical centers and on other biomolecules also.
Glutathione act as a ubiquitous tripeptide that contains thiol that plays a protective role of cells under a condition of oxidative stress. It also modulates the response of a cell to some kind of major redox changes through antioxidant gene expression regulation.
Thus the statement is true since glutathione act as a reducing agent to keep cells in a reduced state and also removes toxic peroxides.
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If a case of anorexia nervosa has neared a medical crisis, the first step in treatment is to?
If a case of anorexia nervosa has neared a medical crisis, the first step in treatment is to restore adequate body weight.
Anorexia nervosa is an eating disorder in which a person has a fear of being overweight and thus avoids eating as much as possible. He is very concerned about his body shape and weight. He tries unhealthy routines to acquire a perfect body shape or indulges in unhealthy practices like vomiting after eating.
Anorexia nervosa can be diagnosed by oneself. Various symptoms associated with anorexia nervosa include fatigue, underweight, insomnia, abnormal blood count, excessive hair fall, etc. It can take over your life if not treated in time. Treatment may help you develop a better sense of your personality and can return to your normal diet to keep you healthy.
Younger people are more at risk. they become self-obsessed with their thin body shape and avoid treatment. This could be quite life-threatening. It can even affect your health and cause many problems like kidney disorders, heart disorders, low bone density, muscle loss, etc.
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The genetic information carried by dna is in the ___________ and their __________.
The genetic information carried by DNA is in the bases and their sequence.
DNA is known to be the hereditary molecule through which information is passed from parents to offspring. Genetic information lies in the bases and their sequence for an organism.
The DNA is made of four nucleotides which are adenine (A), guanine (G), cytosine (C), and thymine (T). In the DNA, the nucleotide base adenine (A) pairs with thymine (T), and the nucleotide base cytosine (C) pairs with guanine (G).
It is the pattern of sequence of these four nucleotides which interprets the genetic information carried by the DNA in an organism. The sequence of the bases, through transcription, forms mRNA which is translated into proteins.
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The value that stays the same as long as there are no signals in the neuron is known as?
The value that stays the same as long as there are no signals in the neuron is known as resting potential.
Neurons are the nerve cells. These are the longest cell in the human body. The structure of a neuron comprises of a cell body from which arise the various branch-like extensions called the dendrites. From one end emerges the axon that ends at the axon terminal.
Resting potential is the potential difference of ions across the plasma membrane when the cell is resting and no nerve impulse is being conducted. The value of resting potential is approximately -70 mV in majority of the neurons.
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Moving from superficial to deep in a bone, the parts of the bone would be encountered in which sequence?
Moving from superficial to deep in a bone, the parts of the bone that would be encountered in a sequence periosteum, endosteum, and medullary cavity.
What are the functions of the bones?The functions of the bones are as follows:
They provide shape and support for the body.It also protects some organs of the body.Bone serves as a storage site for minerals.Production of blood cells. They store ions and maintain endocrine regulations.While moving from the outside to the inside of the bones, we undergo numerous layers of the bones like the periosteum which is the dense, tough, outer shell that contains blood vessels and nerves.
Endosteum is the compact layer of tissues that is hard and surrounded by the smooth layer that protects the tissues. The medullary cavity is also known as cancellous tissue which is porous and honeycombed material inside the bones.
Therefore, the sequence of the bone parts from superficial to deep is the periosteum, endosteum, and medullary cavity.
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Rod-shaped bacteria synthesize new cell walls over the entire surface of the cell. True or false?.
Rod-shaped bacteria synthesize new cell walls over the entire surface of the cell. So the statement is true.
What is a bacterial cell wall?One thing to keep in mind is that not all bacteria have cell walls. Having said that, it is also crucial to remember that the majority of bacteria (about 90%) have cell walls, and these cell walls are normally either gram-positive or gram-negative.
A differential stain known as the Gram stain may be used in the lab to distinguish between the two distinct cell wall types. It was created in 1884 and has been in use ever since. At first, it was unclear why the Gram stain could reliably separate bacteria into two categories.
When the electron microscope was developed in the 1940s, it was discovered that variations in the cell walls were connected with staining variances. Gram-positive bacteria will stain purple after using this staining procedure, whereas gram-negative bacteria will color pink.
Therefore the statement is true.
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3.1 Explain FOUR mechanisms that the South African government is using deal
The South African government does everything in its power to combat crime.
It has developed a national crime prevention strategy that examines various areas of crime,
Taking the government as an example
1- is seeking a compilation of crime data. The government is looking into the issue because crime data is highly unreliable.
2-is seeking media organizations to assist in spreading awareness of certain offences. They want to educate the public about fighting and violent crime.
3. Classifying crimes and assigning punishments to each category. This is for criminals who need to be aware of the penalties they will face.
4-Increasing the executive authority of weapons, identifying smuggling routes, collaborating with neighboring states, etc. to bring the existing crime rate under some control.
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Through which cellular interactions are the cells of the stratum basale firmly attached to the plasma membrane?
The stratum basale is a single layer of cuboidal basal cells attached to the basement membrane by hemidesmosomes that contain integrins. Adjacent cells are attached by desmosomes that contain cadherins
What is plasma membrane ?The membrane that divides the interior of the cell from the external environment is known as the plasma membrane, sometimes known as the cell membrane, and it is present in all cells. A cell wall is affixed to the plasma membrane on the exterior of bacterial and plant cells.
The inner cell organelles and the exterior environment are physically separated by the plasma membrane. Only a limited range of molecules can enter and exit the cell through the selectively permeable plasma membrane.Learn more about Plasma membrane here:
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After you narrowly avoid a car accident, you begin to calm down. this response is influenced by the __________ nervous system.
Answer:
the answer is
Explanation:
when you done something like it your body will response with simple reflex action which and its response from the central nervous system
4) This morning you got up and ate a huge bowl of cereal. It gave you lots of energy that
your body was able to access quickly. What is the main macromolecule powering this jolt
of energy?
a) Carbohydrates
b) Lipid
c) Both
d) None of the above
C
Classify the descriptions as pertaining to nucleosides, nucleotides, or both nucleosides and nucleotides.
Nucleosides - Do not contain a phosphate group, and are the product when a base bonds at C1 of ribose or deoxyribose
Nucleotides - Contain a base, a monosaccharide, and a phosphate group, are the monomers of nucleic acids, and can be named deoxyguanosine 5'- monophosphate
Nucleosides and Nucleotides - Are found in RNA and DNA, contain a base and a monosaccharide, and may contain either ribose or deoxyribose
What is nucleosides and nucleotides ?A nitrogenous base, typically a purine or pyrimidine, and the five-carbon sugar ribose are what make up nucleosides (bottom). A polynucleotide containing the carbohydrate ribose is referred to as a ribonucleotide or RNA. A nucleotide is simply a nucleoside with an additional phosphate group or groups (blue).
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The general term for the cell process in which the membrane invaginates, forming vesicles that bring extracellular particles or droplets of fluid into the cell, is known as:__________
The general term for the cell process in which the membrane invaginates, forming vesicles that bring extracellular particles or droplets of fluid into the cell, is known as endoocytosis.
What is endocytosis?Endocytosis is a cellular process whereby external substances are engulfed by cells. The substances are then gathered into special membranous vesicles and maybe later digested or transferred into the cytoplasm.
Endocytosis may happen in two ways:
PinocytosisPhagocytosisWhile pinocytosis has to do with the ingestion of liquid particles, phagocytosis has to do with the ingestion of relatively large solid particles such as bacteria and protozoans.
Either way, the two methods represent a way by which substances can be transported into the cell by engulfing.
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What term describes the number of plant and animal species present along with the variety of genetic material present in these organisms?
The term "biodiversity" refers to both the variety of genetic material present in these organisms as well as the number of plant and animal species that exist.
What is biodiversity and examples?The diversity of ecosystems, measured by their type and population, in which living things interact with one another and their surroundings is referred to as ecosystem biodiversity. For instance, the Earth has a variety of ecosystems, each with its own unique characteristics, such as deserts, oceans, lakes, plains, and forests.
The diversity of genes present in the living world is referred to as genetic diversity. Various genes and gene expressions exist between and within different species. Additionally, this genetic diversity leads to the diversity of life forms, their physical and biological traits, and, in some cases, phenotypes, depending on how those traits interact with their environment.
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HELP ME OUT ASPPP YOU WILL GET BRAINEST AND 20 points
Answer:
Electron
Explanation:
Electrons are on the outside protons and neutrons are in the middle
AHH HELP OMG :') Which of the following sets of features are adaptations to overcome the buoyancy aspect of the aquatic problem? Pick the best possible answer.
Tapetum lucidum, echolocation, electroreception
Caudal fluke, enlarged flippers, flattened tail
Insulation, repellant oil, altered metabolism
O Pachyostosis, osteosclerosis, gastroliths
Answer:
The second option
Explanation:
Epigenetics examines gene expression and how those with identical genes may have different.
Answer:
The field of epigenetics investigates how environmental factors and behaviour may alter how your genes function. While epigenetic mechanisms can alter how the body interprets a DNA sequence, these are reversible and never alter the DNA sequence as genetic changes do.
Identical twins provide excellent research subjects for examining the impact of epigenetic mechanisms, modifications to the DNA that regulate gene expression rather than the DNA sequence itself.
Even though twins are epigenetically impossible to distinguish in the first few years of life, we discovered that the older monozygous twins showed impressive differences in the quantities and dispersion of 5-methylcytosine DNA as well as histone acetylation in there own genomes, which had an impact on their gene-expression profile.
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The links of all the interconnected pathways of energy and mater flowing through a community is called a?
The links of all the interconnected pathways of energy and matter flowing through a community is called a food web.
Energy is the fuel that any living organism uses to carry out its life processes. All the body functions require energy to be accomplished. Most organisms uses energy in the form of ATP. This energy is formed inside the body by the breakdown of the ingested food.
Food web is the interconnection of all the food chains in the environment. A single organism can be the part of multiple food chains in an ecosystem. Hence there are no fixed trophic levels of any organism in a food web. A food chain is of linear direction, but a food web gas a zig-zag pattern.
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I can't really understand what the experiment would be, so I can't think of a hypothesis.
The experiment that is to be conducted is intended to verify and test the widely accepted hypothesis that maggots appear spontaneously in decaying meat. Additionally, you should record each and every step you take during this experiment.
The following is the theory or hypothesis : Fly larvae are referred to as maggots. They feed on meat because females place their eggs in materials that give food for the hatched maggots. Many fly species prefer meat as a source of maggot feeding. Modern meat processing and packaging follow strict health code guidelines. Until it is time to make it, it is stored frozen or chilled and is packaged in plastic. Meat exposed to the air at room temperature, however, might draw female flies looking for a spot to deposit their eggs which leads to maggots. Fly eggs can easily hatch on leftover meat scraps causing maggots that aren't wrapped in plastic or placed inside of a bag.
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