Answer:
Answer below.
Explanation:
In the respiratory system, cells of the lungs or alveoli are made up of simple squamous epithelium and have a lot of mitochondria present in them. This helps in the function of exchange of gases and the transport of these gases to and from the body thereby fulfilling the role of the respiratory system.
The skeletal muscle cells are made up of numerous mitochondria and are spindle-shaped. The fibres form the tissues of the muscles. The mitochondria helps in the skeletal muscle's role in motion as it makes sure energy is released for this activity. The skeletal muscle fibres are arranged in such a way as to facilitate their contraction and relaxation during movement.
The cells of the small intestine are made up of Golgi apparatus and vesicles and also organelles which facilitate the absorption of food nutrients from the intestinal passage.
Approximately how long has the victim been dead if his body temperature was 78.6°F?
Based on the victim's body temperature of 78.6°F, the estimated time of death is approximately 13 hours and 24 minutes.
Explanation:In order to determine how long a person has been dead based on their body temperature, we need to consider the concept of post-mortem cooling or algor mortis. The rate at which a body cools after death depends on various factors such as ambient temperature, clothing, and body composition. On average, a body cools at a rate of about 1.5°F (0.83°C) per hour in the first 12 hours, and then slows down.
If the victim's body temperature is 78.6°F, we can calculate an estimate by subtracting the body temperature from the normal average body temperature of 98.6°F. The difference is 20°F or 11.1°C. If we divide this difference by the rate of cooling (0.83°C per hour), we can estimate that the victim has been dead for approximately 13.39 hours or 13 hours and 24 minutes.
To estimate the time of death based on body temperature of 78.6°F, you can use the concept of postmortem cooling, where the body loses about 1.5°F per hour after death. By calculating the difference from the normal body temperature of 98.6°F and dividing it by the cooling rate, you can get a rough estimate. A difference of 20°F suggests approximately 13.3 hours since death.
Determining the time of death based solely on body temperature can be challenging, as various factors like ambient temperature, clothing, and individual characteristics play a role. However, a general guideline is that the body loses about 1.5°F per hour after death, known as postmortem cooling or algor mortis. If the victim's body temperature is 78.6°F, you could estimate the time of death by calculating how many degrees below the normal body temperature of 98.6°F the body is and then dividing by the average hourly cooling rate.
For example, if the difference is 20°F (98.6°F - 78.6°F), and the average cooling rate is 1.5°F per hour, you could estimate around 13.3 hours since death (20°F / 1.5°F per hour ≈ 13.3 hours). This is a simplified calculation, and actual conditions may vary.
Microscopic examination of a tissue reveals an open framework of fibers with a large volume of fluid ground substance and elastic fibers. this tissue would most likely come from:____________.
a. inner wall of a blood vessel
b. lungs
c. spleen
d. tissue that separates skin from underlying muscle
e. bony socket of eye
Answer:
d.
Explanation:
Based on the scenario being described within the question it can be said that this tissue would most likely come from tissue that separates skin from underlying muscle. Also known as the superficial fascia, this is the main coating beneath the skin that is mainly made up of different amount of fat, which also surrounds the bodies organs.
A close friend has joined a clinical trial. When you ask her about the types of treatment she might be given, she tells you that neither she nor the doctor running the trial will know until the process has been completed. What type of trial has she joined?
A. double-blind
B. peer reviewed
C. unsafe
D. theoretical
E. epidemiological
Answer:
A. double-blind
Explanation:
Based on the scenario being described within the question it can be said that the type of trial that she has joined is known as a double-blind study. This is a type of study in which individuals are chosen randomly for each clinical intervention and the results are not given to the researchers until after the trial. This also includes any and all information that may influence the researchers behavior or thoughts on the study.
Answer:
A. double-blind
Explanation:
In Medicine, Double-blind study is a type of trial in which neither the patient nor the doctor running the trial will know until the process has been completed.
It is usually aimed at preventing bias in a scientific research or experiment to the placebo effect.
Which is the SIMPLEST level of organization in a human being?
Answer: Cells? If not this, then probably atoms, but most likely cells.
Explanation: Everything in the human body is made of cells. All cells are made of atoms.
What are the differences between dandelions and grass?
Answer:
the difference is that grass is a family of plants and a dandelion is a plant.
Explanation:
By drawing nutrients like calcium from the soil's depths, the deep taproot makes them available to other plants. Although most people believe they destroy lawns, dandelions actually fertilize the grass.
What differences between dandelions and grass?With their bright yellow blossoms and basal leaves, dandelion plants are easily recognized (leaves which grow from the bottom of the stem only).
Dandelion leaves are lobed and secrete a milky sap, and the flowers develop on hollow, solitary, branching stems.
Dandelions have a long taproot that, if cut, can produce several new plants. One of the reasons dandelions draw such unfavorable attention is because of their taproot.
A single, fleshy dandelion taproot can reach a depth of many feet, and its sides are covered in tiny, hair-like roots.
Therefore, the difference is that grass is a family of plants and a dandelion is a plant.
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What is the process of water vapour moving out of the leaves?
The process of water vapor moving out of the leaves is known as transpiration. Transpiration is a vital physiological process in plants, whereby water is absorbed by the roots from the soil and transported upwards through the plant's vascular system (xylem) to the leaves. Once in the leaves, water molecules evaporate from the surfaces of specialized cells called stomata into the surrounding air as water vapor.
Transpiration serves several essential functions in plants. Firstly, it facilitates the uptake of water and minerals from the soil, providing necessary nutrients for growth and metabolism. Additionally, transpiration helps to cool the plant by dissipating heat through the process of evaporation. This cooling effect is particularly crucial for plants growing in hot environments, as it helps prevent overheating and maintains optimal physiological conditions.
Stomata, small pores located primarily on the undersides of leaves, control the rate of transpiration. These pores are surrounded by specialized guard cells that can open and close to regulate the movement of gases, including water vapor, into and out of the leaf. When stomata are open, water vapor diffuses out of the leaf into the surrounding air, driven by differences in water vapor pressure between the leaf interior and the external environment.
Factors such as light intensity, temperature, humidity, and wind speed influence the rate of transpiration. Higher light intensity and temperatures generally increase transpiration rates, as they enhance the evaporation of water from the leaf surfaces. Conversely, high humidity levels reduce transpiration rates, as the concentration gradient for water vapor between the leaf and the air is diminished.
Overall, transpiration plays a crucial role in plant water balance, nutrient uptake, and temperature regulation, making it a fundamental process in the physiology and ecology of plants.
Carbon cycles between the biotic and abiotic worlds mainly through
Answer:
your heart
Explanation:
Which adrenal gland homeostatic imbalances is characterized by persistent elevated blood glucose levels
Answer:
Cushing's syndrome
Explanation:
Cushing's syndrome or hypercortisolism is a syndrome caused by high levels of the hormone cortisol in the body.
The prolonged exposition to high levels of glucocorticoids such as cortisol has been associated with the occurrence of this syndrome
You and your partner Amy arrive on scene to find a woman with hives over much of her body. She is wheezing and complaining of difficulty breathing. Her husband says she was stung by a hornet and has no prior history of allergies. What would be the best course of action?
Answer:
Explanation:
Based on the scenario being described within the question it can be said that the best course of action would be to place a high flow of O2 and rapid transportation if the patient appears to be going into anaphylaxis. Mainly because this is a severe life threatening allergic reaction, that occurs at a moments notice and closes the individuals airway causing breathing to become very difficult.
Which example is a short-term environmental change?
O
ice age
O
global warming
large asteroid impact
tsunami
Answer:
tsunami
Explanation:
A tsunami is an example of a short-term environmental change.
Explanation:A short-term environmental change is a change in the environment that occurs over a relatively brief period of time. Out of the examples given, the tsunami would be considered a short-term environmental change. Tsunamis are powerful ocean waves caused by movements in the seafloor. They often result from earthquakes, volcanic eruptions, or large underwater landslides. While tsunamis can have devastating effects, their impact on the environment is relatively short-lived compared to other examples like global warming or ice ages.
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What is the difference between the cerebral cortex of an adult and that of an adolescent?
Answer: the part of the brain that does decision making is different because adolescents arent fully grown
Explanation:
Independent assortment of chromosomes occurs during _____.
Answer:
homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other.
Explanation:
Final answer:
Independent assortment occurs during meiosis-I in eukaryotic organisms to produce gametes with a mixture of the organism's maternal and paternal chromosomes.
Explanation:
Independent assortment of chromosomes occurs during meiosis-I in eukaryotic organisms, specifically anaphase-I of meiosis, to produce a gamete with a mixture of the organism's maternal and paternal chromosomes. Along with chromosomal cross-over, this process aids in increasing genetic diversity by producing novel genetic combinations.
State if the body had been dead for more than or less than 12 hours based on the number of degrees lost (19 degrees). *
After the first 12 hours, the body loses about 0.39°C (0.7°F) per hour. than 12 hours. you use the rate of 0.78°C per hour to estimate the time of death. Temperature of dead body is 32.2°C (90°F)
Explanation:
This phase is known as algor mortis, or the death chill. Each hour, the body temperature falls about 1.5 degrees Fahrenheit (0.83 degrees Celsius) until it reaches room temperature. At the same time, without circulation to keep it moving through the body, blood starts to pool and settle.
he decrease in body temperature follows a somewhat linear progression: 3 two degrees Celsius in the first hour; one degree each hour thereafter.
What is a defining characteristic that all protocells had in common?
Answer:
a surrounding membrane or membrane-like structure
Explanation:
A protocell (or protobiont) is a self-organized, endogenously arranged, spherical array of lipids suggested as a step-stone in the direction of life's origin.
Protocells are thought to have enabled the reproduction of RNA and hence the exchange of genetic information at a time prior to the advent of DNA and proteins (the world RNA hypothesis).
A common characteristic common in all the protocells is the surrounding membrane through which the exchange of genetic information or proteins takes place.
Protocells, the precursors to modern cells, primarily share two key characteristics: maintaining an internal chemical environment and carrying out fundamental metabolism. This was enabled by their lipid bilayer makeup.
Explanation:A defining characteristic that all protocells shared is their capacity to maintain a separate internal chemical environment and to carry out primitive forms of metabolism. This was made possible because protocells were likely composed of a lipid bilayer, which allowed them to maintain a separate internal environment from the surrounding medium. Furthermore, they are also believed to have the ability to carry out basic metabolic processes.
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Which organelle captures the energy from sunlight and converts it to chemical energy
Answer:
the chloroplast
Explanation:
The chloroplast is an organelle usually found in plant cells and also in eukaryotic algae that aids in capturing energy from sunlight and converting it to chemical energy. This organelle aids in conducting photosynthesis which is a process by which these organisms manufacture their food and provide energy for their various metabolic activities. They contain chlorophyll which is a photopigment that helps to perform this function.
The chloroplast, an organelle found in plant cells, captures energy from sunlight and converts it into chemical energy through the process of photosynthesis.
Explanation:The organelle that captures energy from sunlight and converts it into chemical energy in a process known as photosynthesis is the chloroplast. This organelle, found exclusively in plant cells, contains a pigment called chlorophyll which gives plants their green color and absorbs sunlight. This sunlight is then used to transform carbon dioxide and water into glucose (a type of sugar) and oxygen, providing the plant with a usable form of energy.
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The DSM-5 states criteria for the diagnosis of premature ejaculation by specifying that a man must ejaculate within _____ of beginning sexual activity and before the man wishes it on _____ of occasions over a period of at least _____.
Answer:
1 minute
75-100%
6 months
Explanation:
Premature ejaculation is the release of semen from the male reproductive organ at the very early stage of sexual activity usually between 30 seconds to one minute. Studies have shown that, it is rampant among first timers (those experiencing sexual activity for the first time) , in some which may persist for a while or over an extended period of time. However , a lot of remedies has been put in place to combat premature ejaculation such as ;usage of aphrodisiacs, or drugs from pharmaceutical stores.
Premature ejaculation which is the inability to full control over reflexes coordinating ejaculatory roles are sometimes caused by hormonal imbalance or psychological factors such as stress, over anxiety etc.
Answer:
The DSM-5 states criteria for the diagnosis of premature ejaculation by specifying that a man must ejaculate within __1 minute__ of beginning sexual activity and before the man wishes it on ___75%__ of occasions over a period of at least __6 months___.
Explanation:
The DSM-5 states that a person has premature or rapid ejaculation when he ejaculates after one minute has passed from the penetration, and the man does not want to ejaculate yet on the 75% or 100% of the time in 6 months or longer. An occasional premature ejaculation is normal, but if it happens regularly, a professional can help.
Scientists have successfully cloned sheep and cattle for several years. A farmer is considering the advantages and disadvantages of having a flock of sheep cloned from a single individual. Discuss the issues the farmer should take into account before making a decision.
Answer:
Cloning is the mechanism by which one living organism takes genetic material and produces identical copies of it. Cells, organs, chromosomes and whole species have been cloned by geneticists.
The scientist need to take of some of the issues before cloning of sheep are as following:
Conflict with long-standing religious and social values about human dignity, probably infringing the principles of equality, identity and autonomy of each person.Cloned embryos face the same difficulties as naturally occurring pregnancies, plus others that are unique to cloning, so embryonic condition should be maintained. Cloned embryos surviving pregnancy may be born with a number of birth defects and other health issues. However, cloned cells can lack the programming required to tell the genes when to turn on and off. The outcome could be disorganised cell growth or abnormal functioning of the cell, all of which may lead to death of an organism.Final answer:
A farmer considering cloning a flock of sheep should take into account the low success rates, potential health complications as observed in Dolly and other clones, and the bioethical considerations surrounding the cloning process.
Explanation:
When considering the cloning of a flock of sheep from a single individual, several key issues arise. The case of Dolly the sheep, the first cloned agricultural animal, provides insights into potential challenges. Reproductive cloning had a very low success rate at the time, and Dolly herself lived for seven years before dying of respiratory complications. There is a concern that the age of the donor DNA might affect the lifespan of the clones, as observed with Dolly, whose DNA came from an older individual. Also, since that time, cloned animals have been reported to exhibit various abnormalities, including those affecting the face, limbs, and heart.
There are also potential benefits of cloning, such as creating animals that overproduce certain proteins for medical purposes, and even possibly bringing back extinct species. However, alongside the practical considerations, there are also bioethical considerations to weigh, as the debate over cloning's morality, especially concerning therapeutic uses, is still ongoing. A farmer contemplating cloning must weigh these potential health risks and ethical debates against cloning's potential benefits.
A female zebra finch reared by a father with a red feather taped to his head will select a mate with a similar ornament over an unornamented male. What are plausible ultimate explanations for this behavior (i.e., why it occurs in the context of natural selection)?1.Zebra finches are able to perceive ornamentation on other birds.2.A female zebra finch learns to recognize suitable mates by observing her father.3.A female zebra finch that chooses a mate that resembles her father is more likely to reproduce successfully.
Answer: 3.
Explanation:
The concept is based on sexual imprinting which results from selection for recognition of conspecifics.
Sexual imprinting is the mechanism by which a young animal discovers the properties of a desired mate. Male zebra finches, for example, tend to favor mates with the presence of the female bird rearing them, rather than that of the birth parent when they're special.
A female zebra finch select a male that resembels her father with a red feather taped to his head for reprodcution because there are sufficient opportunity of sexual imprinting.
Hence, the correct option is 3.
How do scientist determine the health
of a body of water ?
What factors are consider ?
Answer:
Scientists measure temperature, acidity (pH), dissolved solids (specific conductance), particulate matter (turbidity), dissolved oxygen, hardness and suspended sediment.
pH test strips and color disk tests are widely available. More expensive, higher-tech options include electrode-based pH meters. pH is a measure of hydrogen ion activity, which means that it tells us how acidic or basic the water is These include temperature, acidity (pH), dissolved solids (specific conductance), particulate matter (turbidity), dissolved oxygen, hardness and suspended sediment. Each reveals something different about the health of a water body.
2.
Which statement is NOT true about all forms of radiation?
1. All objects absorb radiant energy.
2. All objects emit radiant energy.
3. It can travel through empty space.
4. Radiation always causes illness.
5. It is the movement of heat by electromagnetic waves.
Answer:
3 it can travel through empty space
The incorrect statement about radiation is that it always causes illness. Radiation, which is the transfer of energy through electromagnetic waves, is not inherently harmful and is vital for many natural processes.
The statement that is NOT true about all forms of radiation is: Radiation always causes illness. This is a misconception, as radiation refers to the transfer of energy through electromagnetic waves, which can occur naturally and are not always harmful. Objects at temperatures above absolute zero emit radiant energy, and this energy transfer does not require a medium; it can travel through empty space. Radiation is vital for various natural processes, such as photosynthesis in plants. While certain types of radiation at high levels can cause harm and lead to illness, not all radiation is harmful and many types are essential for life.
One more question!
Glucose is an example of a ______ sugar.
simple
complex
starchy
Glucose is a simple sugar or monosaccharide.
16. During electron transport reactions a. OH- accumulates on the outside of the membrane while H accumulates on the inside. b. OH- accumulates on the inside of the membrane while H accumulates on the outside. c. both OH- and H accumulate on the inside of the membrane. d. both OH- and H accumulate on the outside of the membrane
Answer:
Option B, OH- accumulates on the inside of the membrane while H+ accumulates on the outside.
Explanation:
In electron chain reaction, the electrons move through a series of electron transporters thereby undergoing redox reactions. This leads to accumulation of hydrogen ion (H+) with in the matrix and hence development of concentration gradient that leads to diffusion of hydrogen ion out of the matrix and accumulation of OH- ion on the inner side of the matrix while passing through ATP synthase
Hence, option B is correct
Final answer:
During electron transport reactions, hydrogen ions (H+) accumulate on one side of the membrane, creating an electrochemical gradient that can be used to synthesize ATP.
Explanation:
In the electron transport chain, a concentration gradient of hydrogen ions (H+) is established across the mitochondrial membrane. This creates an electrochemical gradient, with H+ ions accumulating on one side of the membrane. The electrons flow through a series of membrane-bound carriers, ultimately being accepted by oxygen to form water, while the H+ ions are pumped across the membrane.
The buildup of H+ ions on one side of the membrane creates a proton gradient that can be utilized to synthesize ATP from ADP and inorganic phosphate (Pi) through the action of ATP synthase.
In Shorthorn cattle, both red coat color and white coat color are true breeding. Crosses of red cattle x white cattle produce offspring that are uniformly reddish brown but thickly sprinkled with white hairs. This type of coat color is called roan. Crosses of roan x roan produce 1/4 red : 2/4 roan: 1/4 white. What kind of genetic inheritance can explain these results
Final answer:
The results can be explained by incomplete dominance, where neither allele is dominant and the heterozygous individual displays an intermediate phenotype.
Explanation:
The kind of genetic inheritance that can explain the results of crosses between roan cattle is incomplete dominance. In incomplete dominance, neither allele is dominant over the other, and the heterozygous individual displays an intermediate phenotype. When red cattle (RR) are crossed with white cattle (WW), the offspring have a genotype of RW, resulting in the roan phenotype, which is a mix of red and white hairs.
This type of inheritance is similar to what is observed in snapdragons, where a cross between a homozygous parent with white flowers (CWCW) and a homozygous parent with red flowers (CRCR) produces offspring with pink flowers (CRCW). In both cases, the heterozygous genotype produces an intermediate phenotype.
Scientists believe the Archaebacteria to be survivors of an ancient group of organisms that bridge the evolutionary gap between prokaryotes and
Answer:
Explanation: Scientists believe that Archaebacteria are the survivors of an ancient group of organisms that bridge the evolutionary gap between prokaryotes and eukaryotes. Eukaryotes are the true evolved cells and they differ from prokaryotes
Explanation:
Which of the following planets is a terrestrial planet with an iron and nickel core? Saturn Jupiter Mars Neptune
Answer:
Mars
Explanation:
Proccess of elimination:
Mars is the only terrestrial planet of the 4 options; the rest are Jovian Planets
Answer: I believe it’s Mars
Explanation:
What is the end result of mitosis and meiosis?a.Mitosis and meiosis result daughter cells for growth, development and reproduction in the living world.b.Mitosis results similar daughter cells generally for growth and development. In asexual mode of reproduction, mitosis helps in increasing the number of cells.c.Meiosis results variations and helps the sexual mode of reproduction. The resultant daughter haploid cells unite during the fertilization process and retains the diploid number of chromosomes.
Answer:
one cell with two identical copies of DNA
Explanation:
Meiosis produces genetically unique and haploid daughter cells for sexual reproduction, while mitosis produces genetically identical and diploid daughter cells for growth and development.
Explanation:Meiosis results in genetically unique and haploid daughter cells, which are involved in sexual reproduction. It involves two rounds of nuclear division, resulting in four daughter nuclei. Mitosis, on the other hand, produces genetically identical and diploid daughter cells that are used for growth, development, and tissue repair. It is a single nuclear division process.
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_______ is an organism’s genetic makeup, while ________ is an organism’s physical appearance.
The genetic code was originally deciphered, in part, by experiments in which synthetic polynucleotides with repeating sequences were used as mRNAs to direct protein synthesis in cell-free extracts. Under these conditions, ribosomes could be made to start translation anywhere within the RNA molecules, with no start codon necessary. What peptide would be made by translation from a synthetic mRNA made of the repeating dinucleotide CGCG…?
A. a polymer of arginine plus a polymer of alanine
B. the peptide Met–Arg–Ala–Arg–Ala…
C. a polymer of alanine: Ala–Ala–Ala…
D. a peptide containing alternating arginines and alanines
E. a polymer of arginine: Arg–Arg–Arg…
Answer: a peptide containing alternating arginines and alanines.
Explanation:
As the mRNA has a repeating unit of CGCG.
Now if we extend the units with more CG (CGCGCGCGCGCG) the pairing will be as CGC-GCG-CGC-GCG. and if we see the amino acids coded by these codons are arginine for CGC and alanine for GCG.
As this synthetic mRNA doesn't require any initiation codon (AUG) thus the polypeptide will not have methionine, which is the first amino acid in every polypeptide coded by the initiation codon.
Thus, the synthetic mRNA will code for peptide having alternating arginines and alanines amino acids.
What are the most common symptoms of
musculoskeletal diseases and disorders?
Answer:
Common symptoms of musculoskeletal disorders include pain, weakness, stiffness, joint noises, and decreased range of motion. Inflammation may cause pain, swelling, warmth, tenderness, impaired function, and sometimes redness of the overlying skin.
Includes Diseases: Rheumatoid arthritis
Explanation:
Answer:
Common symptoms of musculoskeletal disorder includes pain, stiffness, weakness, swelling, and motion range decreases.
Explanation:
Musculoskeletal disorder is combination of Muscles and skeleton.
It is a disorder that affect the body movement.
For e.g. tendon strain (disease) is an example.
A child is born with sickle cell anemia. What can you conclude about the potential genotypes of the parents?
Answer:
The potential parental genotypes could be "both recessive" or "both heterozygous".
Explanation:
Sickle cell anemia is a disease where there are not enough red blood cells throughout the body so they are not able to carry the necessary amount of oxygen for the body to function properly. It is a disease that is carried on recessive genes so for an individual to have this disorder, they must have to recessive genes from both parents. In this case the potential parental genotypes could be "both recessive" or "both heterozygous".
I hope this answer helps.