While vacationing in a country that lacks adequate meat inspection, a student ate undercooked ground beef. Sometime later the student became easily fatigued, and lost body weight. At about the same time, whitish, flattened, rectangular objects full of small white spheres started appearing in his feces. The student had probably been infected by a(n) _________ which can be found in the phyla _______
Answers
The student most likely had a tapeworm infection, which belongs to the phylum Platyhelminthes.
Thus, when people eat undercooked or contaminated meat, especially beef, they can become infected with parasitic flatworms called tapeworms. In the human intestines, tapeworm larvae can mature into adult worms after being consumed.
The symptoms mentioned, including weakness, weight loss, and the discovery of flattened, white, rectangular items packed with tiny white spheres in the faeces, are those of a tapeworm infection. Proglottids, reproductive segments that the adult tapeworm sheds in the intestines, are the rectangular items. There are many of eggs or larvae in these proglottids.
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Related Questions
Which of these examples illustrates deductive reasoning?
Answers
option B is the examples that illustrates deductive reasoning. Now you decide that fate always punishes yo You learned in elementary school that as temperature drops, liquids change into solid form.
Drawing inferences using deductive logic is a form of deductive reasoning. It is impossible for the premises to be true and the conclusion to be false, which is a requirement for a deductively valid inference. Deductive validity allows one to draw the conclusion that Socrates is mortal from the premises "all men are mortal" and "Socrates is a man." If all of your premises are true and your argument is valid, it is considered sound. The author must intend for the premises to provide the conclusion with deductive support, according to some theorists, who define deduction in terms of the author's intentions. It is feasible to discern between legitimate and unjustified deductive reasoning with the use of this adjustment.
Which of these examples illustrates deductive reasoning?
A) You come down with the flu after you pretended to be sick so you could skip work to attend a concert.
B) Now you decide that fate always punishes yo You learned in elementary school that as temperature drops, liquids change into solid form.
C) You are given an unfamiliar liquid and hypothesize that it will.
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The oxygen released by photosynthesis comes from:
a. CO2.
b. H2O.
c. light.
d. NADPH.
e. electrons.
Answers
Answer:
it comes from the air and soil
During a high-energy athletic event, such as a sprint, most of the energy that is provided to the muscles comes from
glycolysis.
the electron transport chain.
the Krebs cycle.
fermentation
Answers
Answer: read explanation :>
Explanation: During high-energy athletic events like sprints, most of the energy for the muscles comes from glycolysis. This anaerobic pathway breaks down glucose into pyruvate, producing ATP. The Krebs cycle and electron transport chain are aerobic pathways used for lower-intensity activities, while fermentation is a less efficient anaerobic pathway used when oxygen is not available.
All of the following statements about telomeres and telomerase are true EXCEPT that(2 pts) A) telomeres shorten as cells age (senescence) B) telomerase minimizes telomere shortening C) telomerase activity is high in adult cells D) telomerase activity is high in embryonic stem cells E) None of these choices
Answers
All of the following statements about telomeres and telomerase are true EXCEPT that C) telomerase activity is high in adult cells.
Telomeres are repetitive sequences of DNA found at the ends of chromosomes that protect the genetic information. As cells divide and age (senescence), the telomeres shorten due to the limitations of the DNA replication process.
Telomerase is an enzyme that minimizes this shortening by adding repetitive DNA sequences to the ends of chromosomes, thereby maintaining the telomere length. However, telomerase activity is generally low in most adult cells, leading to progressive telomere shortening and eventually cellular aging.
On the other hand, telomerase activity is high in embryonic stem cells and some cancer cells, which allows these cells to maintain their telomere length and continue dividing indefinitely.
Therefore, the correct answer is option C.
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The discovery of a fossilized animal with teeth, a long bony tail, and feathered wings helped to establish which evolutionary sequence?
Answers
The discovery of a fossilized animal with teeth, a long bony tail, and feathered wings helped to establish evolutionary sequence of reptiles to birds.
About EvolutionEvolution in the study of biology means changes in the heritable traits of a population of organisms from one generation to the next. These changes are caused by a combination of three main processes: variation, reproduction, and selection.
The traits that form the basis of this evolution are carried by genes that are passed on to the offspring of a living thing and become varied within a population. When organisms reproduce, their offspring will have new characteristics.
New properties can be obtained from changes in genes due to mutations or gene transfer between populations and between species. In sexually reproducing species, new gene combinations are also produced by genetic recombination, which can increase variation between organisms.
Evolution occurs when these inherited differences become more common or rare within a population. Changes that occur in chromosomes and genes are the basic material of evolution, isolation usually causes the emergence of new species and natural selection by differences in reproduction and mutation.
Evolution also suggests that all kinds of living things actually come from the lowest creatures. In accordance with the circulation of the times and geological-astronomical changes, there have been gradual changes in living things until now. Based on evolutionary thinking, humans are classified as animals. Animals themselves experience the lowest level of development and form like creatures, ranging from viruses, bacteria, protozoa, worms, fish to mammals.
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Your___nerves are primarily___?
A)olfactory; chemoreceptors
B)hop; thermoreceptors
C)optic; mechanoreceptors
D)auditory; photoreceptors
Answers
Answer:
A
Explanation:
Your olfactory nerves are primarily chemoreceptors, hence option A is correct.
What are chemoreceptors?G-protein coupled receptors (GPCRs), which are the majority of chemoreceptors expressed in olfactory organs, may be divided into two main categories: odorant receptors (ORs) and pheromone receptors, which primarily detect general scents and pheromones, respectively.
Olfactory receptors (ORs), often referred to as odorant receptors, are chemoreceptors that are expressed in the cell membranes of olfactory receptor neurons. They are in charge of detecting odorants, or substances with an odor, which are what cause the sense of smell to be experienced.
Chemoreception is a method through which living things react to chemical stimuli in their surroundings and is mostly dependent on taste and smell.
Therefore, olfactory nerves are primarily chemoreceptors, hence option A is correct.
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which of the following hormones is mis-paired with its target organ? group of answer choices tsh--thyroid fsh--gonads acth--adrenal cortex lh--kidney gonadotropic hormones--testes and ovaries
Answers
The mis-paired hormone and target organ in the given options is (D) "LH--kidney." LH.
Luteinizing Hormone, is a hormone primarily associated with the regulation of the reproductive system, specifically in the gonads (testes and ovaries). LH is not known to directly target the kidney.
In females, LH plays a crucial role in the menstrual cycle. It triggers ovulation, the release of an egg from the ovary, and stimulates the production of progesterone by the corpus luteum. In males, LH stimulates the production of testosterone by the Leydig cells in the testes.
The correct pairing for LH is "LH--gonads (testes and ovaries)," as it regulates the reproductive functions and hormone production in these organs.
The kidneys, on the other hand, are primarily involved in the filtration and regulation of blood composition, fluid balance, and waste excretion, and are not directly influenced by LH.
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if e. coli are grown on culture media containing only lactose, which interaction will not occur?
Answers
The interaction that will not occur if E. coli are grown on culture media containing only lactose is the induction of the lac operon.
The lac operon is a group of genes in E. coli that are responsible for the breakdown and utilization of lactose as a source of energy. The operon is induced when lactose is present in the environment, and it is regulated by a repressor protein that binds to the DNA in the absence of lactose. When lactose is present, it binds to the repressor protein and causes it to change shape, releasing it from the DNA and allowing the genes in the operon to be transcribed and translated.
However, if E. coli are grown on culture media containing only lactose, there will be no other sources of carbon or energy available. As a result, the cells will not be able to grow and divide, and the induction of the lac operon will not occur. Without the induction of the operon, the cells will not be able to utilize lactose as a source of energy, and they will eventually die.
In summary, if E. coli are grown on culture media containing only lactose, the induction of the lac operon will not occur, and the cells will not be able to utilize lactose as a source of energy. This highlights the importance of providing a balanced and diverse nutrient environment for the growth and survival of bacterial cells.
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Use the drop-down menus to complete the statements. In the first step of meiosis I, DNA condenses to form chromosomes . In the second step, ✔ Each pair of chromosomes lines up in the center of the cell . In the third step, . In the final step of meiosis I, .
Answers
Answer:
Prophase I, metaphase I, anaphase I and telophase I.
Explanation:
Prophase I is the phase of meiosis I in which DNA condenses to form chromosomes whereas in metaphase I, each pair of chromosomes lines up in the center of the cell. In anaphase I, each pair of chromosomes is separated from one another which is pulled by the spindle to opposite poles of the cell. In telophase I, the duplicated genetic material is separated that leads to two identical daughter cells.
Please help with completing this chart it dues tmr PLS
Answers
2. In your own words, describe how you can use the stars to locate the
sky's North Pole.
Answers
Answer:
Explanation:
You can use the Big Dipper to find Polaris, which is also known as the North Star. Notice that a line from the two outermost stars in the bowl of the Big Dipper points to Polaris. And notice that Polaris marks the tip of the handle of the Little Dipper. The northern sky is a large clock, with Polaris at its center.
Answer:
Look North and read the pattern the sky has, usually Northern constellations
can direct the eye.
What are the main differences between Archaeabacteria and Bacteria?
Answers
Answer:
Both bacteria and archaea have a cell wall that protects them.
Answer: Both bacteria and archaea have a cell wall that protects them. In the case of bacteria, it is composed of peptidoglycan, whereas in the case of archaea, it is glycoproteins and so on.
11. Choose the best answer.
A spore is a reproductive structure that contains a haploid cell and
a food supply
a style
a protective coating
a diploid cell
Answers
a protective coating. spores do not have stored food supplies, they are a haploid cell
The Law of Superposition states that younger formations ___ older formations.
A. overlook
B. overlie
C. wrap around
D. the Law of Superposition states none of the above
Answers
According to the Law of Superposition, younger formations overlie older formations. The correct option is B
What is the essential idea behind stratigraphy and geology ?This idea is a cornerstone of stratigraphy and geology. It asserts that the layers on top of any series of rock layers or sedimentary deposits are newer than the layers below.
This means that if you discover a layer of sedimentary rock or other material in the center of two other strata, you can presume that layer was deposited after the bottom layer but before the higher layer.
Therefore, B. overlie is the correct option
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3. list some diseases of upper respiratory system that you learned in lecture that can help you identify the causative microorganism using bap plates.
Answers
Some diseases of the upper respiratory system that can help identify causative microorganisms using blood agar plates (BAP) include strep throat caused by Streptococcus pyogenes, tonsillitis caused by various bacterial species such as Streptococcus pneumoniae and Haemophilus influenzae, and pharyngitis caused by Corynebacterium diphtheriae.
BAP plates are useful for identifying bacterial growth and hemolysis patterns that can differentiate between different species and strains of bacteria. For example, S. pyogenes will display beta-hemolysis on BAP plates while H. influenzae will not. This can aid in the diagnosis and treatment of upper respiratory infections.
. Some of these diseases include streptococcal pharyngitis (caused by Streptococcus pyogenes), diphtheria (caused by Corynebacterium diphtheriae), and bacterial pneumonia (caused by Streptococcus pneumoniae or Haemophilus influenzae). BAP plates are a valuable diagnostic tool for determining the causative microorganisms in these infections, as they allow for isolation and identification based on colony morphology, hemolysis patterns, and additional tests if needed.
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which of the following accurately explains why human siblings differ in appearance from one another?
A). each of them inherits a unique member of chromosomes.
B). gametes have higher rates for mutations, which allow for more genetic diversity.
C). alleles are interchanged during meiosis, which results in genetically distinct offspring.
D). genes are rearranged during mitosis, which results in new combinations of chromosomes.
Answers
Answer:
C
Explanation:
About the options:
A) That's not true. Every human been inherits the genes from it's parents.
B) That's not true. Gametes have no higher tendency for mutation, that could be dangerous: if a deletirous mutation appears, the organism could die. Mutations don't happen for a purpose, so, mutate can be extremaly bad - and usually is.
C) That's true. One of that interchangends is the crossing-over: nearby chromosomes exchanges parts. It happens in the beginning of meiosis.
D) That's not true. Mitosis is a procedement of cloning cells. If a new combination happen, then we have a mutation and the cell will be probably killed.
The siblings differ in appearance from one another as alleles get interchanged at the time of meiosis, which eventually results in genetically distinct offspring.
What is crossing over?It is the swapping of the genetic material, which takes place in the germ line. During the meiosis, the paired chromosomes from each parent get arrange in a manner that identical sequences of DNA from the paired chromosomes cross over each other.
The phenomenon of crossing over takes place during the start of meiosis, in this the parts of the nearby chromosomes get interchanged. This interchanging of alleles during meiosis leads to the formation of genetically distinct offspring. Therefore, the siblings differ in appearance from one another.
Thus, the correct answer is option C.
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subject is science
Please help me with this
Answers
Answer:
1st is form a hypothesis. that's all I know. Sorry.
Explanation:
Which of the following muscles would produce the greater tension?
A) a muscle with 20 motor units active
B) a muscle with 10 motor units active
Answers
The following muscle that would produce the greater tension is a muscle with 20 motor units active. Option A.
Maximum tension occurs when the thick and thin filaments within the sarcomere overlap the most. As the sarcomere is stretched the tension is reduced. When more motor neurons are stimulated, more muscle fibers contract and the muscle tightens. at the sarcomere level.
The ATP-dependent contractile cycle is mediated by myosin heads. Myosin heads extend from the thick filament backbone attach asynchronously, generate tension, and detach from adjacent thin actin filaments. This cycle is initiated by the tight binding of ATP to the actomyosin-rigid complex. Muscle stiffness, also known as muscle stiffness, stiffness, or stiffness is one of the most common causes of muscle pain.
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4. "Hybrid" means "crossing" or "combination
O
True
O
False
Answers
Answer:
False
Explanation:
sorry if it's wrong
What was the main goal of the Human Genome Project? A. to cure sex-linked genetic disorders B. to learn how to separate DNA C. to educate people about codominant alleles D. to sequence all of the base pairs of the human genome
Answers
The main goal of the Human Genome Project was to sequence all of the base pairs of the human genome. (D)
The Human Genome Project was an international scientific research project that aimed to determine the sequence of the chemical base pairs that make up human DNA and to identify and map all of the genes of the human genome. By sequencing all of the base pairs of the human genome, scientists were able to gain a better understanding of the genetic basis of human health and disease. The funding came from the government of the United States of America, specifically the National Institutes of Health (NIH), in addition to a great number of other organizations from all over the world.
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PLEASE HELP!!
Come up with another myth about the classification of organisms. Then, give two to three reasons why the myth is untrue. Use complete sentences and support your answer with evidence, using your own words.
6. Your myth:
Fact:
Evidence:
Answers
A myth about the classification of organisms and two to three reasons why the myth is untrue are:
Myth: All organisms can be classified into just two categories: plants and animals.Why the myth is untrue?This myth is untrue for a few reasons:
There are more than two categories of organisms: While plants and animals are two of the major categories of organisms, they are not the only ones. Other categories include fungi, protists, and bacteria, which are all distinct groups of organisms with their own unique characteristics.Not all plants and animals are the same: Within the categories of plants and animals, there is a great deal of diversity. There are many different types of plants (e.g., trees, shrubs, flowers) and animals (e.g., mammals, birds, reptiles) with their own unique characteristics.Lastly, the classification of organisms is based on evolutionary relationships: The classification of organisms is based on the evolutionary relationships between different groups of organisms. This means that organisms are classified based on their shared ancestry and the evolutionary changes that have occurred over time.
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What term best describes region “B” of the phospholipid model above?
Answers
Answer:
Hydrophobic
Explanation: The phospholipid has a chagred head (Phosphate region) and hydrophobic tails. Lipids are usually nonpolar and hydrophobic. That is why the tails are oriented towards the interior of the membrane.
The two parts 3 and 4 in the region B of the phospholipid model are 3- saturated fatty acids and 4- unsaturated fatty acids.
What is phospholipid model ?
Phospholipids are a class of lipids having significant role in the construction of cell membranes. It is composed of a hydrophilic head with a phosphate group and a hydrophobic tail with fatty acids end.
The fatty acids present in the phospholipid bilayer , are of two types, Saturated and unsaturated. Fatty acids chains without any double bonds or triple bonds are called saturated fatty acid.
Whereas, fatty acid chain with double bonds or triple bond are called unsaturated fatty acids. These two fatty acids chain creates the hydrophobic tail of the phospholipid bilayer.
Hence the region marked as B is saturated and unsaturated fatty acids.
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Determine if the following statement is true or false and why. “Primary and Secondary Consumers lose about 30% of the energy they absorb from food as heat.” A. True B. False, it should read “Primary Consumers lose about 5% of the energy they absorb from food as heat, while Secondary Consumers lose 30% as heat.” C. False, it should read “Only Secondary Consumers lose about 30% of the energy they absorb from food as heat.” D. False, it should read “Primary and Secondary Consumers lose about 5% of the energy they absorb from food as heat.”
Answers
The following statement is False. There is a constant flow of energy takes place from plants to plant eating animals to flash eating animals in the form of food and 90% of energy is lost as heat .
Hence, Option B is correct.
What is 10 % Law ?Lindemann in 1942 proposed the 10% law of energy flow in ecosystem. According to 10% law if the net primary productivity is taken to be 100% in producers ( first trophic level ) then only 10% of potential energy of plant material is actually assimilated by herbivores as food .during this act by herbivores 90% of energy is lost as heat (thermal heat ) to the environment .
Similarly only 1% of the potential energy of primary consumers is assimilated by carnivores ( secondary consumers ) and the rest 90% of energy of carnivores is lost as heat to the environment . Thus, during energy flow in ecosystem the energy fixed in one level is only 10% of its previous level and 90% of energy is lost as heat in each trophic level.
Thus it it concluded that there is a constant flow of energy takes place from plants to plant eating animals to flash eating animals in the form of food and 90% of energy is lost as heat .
Hence, Option B is correct.
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what forms the genetic code?
Answers
Answer:
Genetic code is the term we use for the way that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the cellular machinery, the ribosome, can read them and turn them into a protein. In the genetic code, each three nucleotides in a row count as a triplet and code for a single amino acid.
Explanation: your welcome
Genetic code is the term we use for the way that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the cellular machinery, the ribosome, can read them and turn them into a protein. In the genetic code, each three nucleotides in a row count as a triplet and code for a single amino acid.
What is genetic code?The genetic code refers to the set of rules guiding the translation of nucleotide bases in DNA or RNA into an amino acid sequence (proteins). The genetic code contains all the codons in the genome, which is a group of three nucleotide base (triplet-based).
Thus, Genetic code is the term we use for the way that the four bases of DNA--the A, C, G, and T.
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List 2 examples of how subduction and uplift CAN move or transform rocks.
Answers
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries.
Uplift or sinking can be due to tectonic movements of plate or the gravitational adjustment of the Earth's crust.
For example cascadia subduction zone and southern alaska are the sites of ongoing subduction in which pacific and juan de fuca plates slide beneath the north american plate. This is the major movement of rocks that can transform the region . This movement will lead to formation of Aleutian island .
In general uplift means vertical elevation of the Earth's surface in response to natural causes. Example of uplift may include tectonic plate that collide, and push up plate and land, forming mountains.
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Which part of the sperm contains the chromosomes (contained within the nucleus)?
Answers
The head part of the sperm contains the chromosomes (contained within the nucleus).
The sperm's head contains the DNA, which when joined with the DNA of the egg results in the formation of a new person. The acrosome is a component of the sperm head that allows the sperm to enter the egg. The mitochondria, which provide the energy for the tail to move, are located in the midpiece.Sperm cells are male reproductive cells derived from the testicles. Sperm cells travel to a female reproductive cell called an oocyte, or egg, and fertilise it. Sperm count and motility are two important characteristics that might influence male fertility. Those who are having reproductive problems may benefit from a sperm analysis.To learn more about Sperm.
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Which is true of all marine ecosystems?
Answers
Answer:
Marine ecosystems are aquatic environments with high levels of dissolved salt, such as those found in or near the ocean.
Explanation:
Hope it helps!
__________mutations can cause the
reading frame to be moved one direction
or the other.
A. Point
B. Inverted
C. Frameshift
Answers
Answer: C - Frameshift
Explanation:
Answer:
Frameshift
Explanation:
is determining sex through chromosomes a random genetic event?
Answers
A. Remains high and unchanged - famine, disease, and lack of medical knowledge
B. Greatly decreasing - societal ills beginning to be rectified
C. Slowly decreasing/ unchanged - societal issues continue to be addressed
D. Remains low and unchanged - food is abundant, medicos knowledge advanced and water purified.
1. Stage 4
2. Stage 2
3. Stage 1
4. Stage 3
Answers
Famine is characterized by an extremely high mortality rate as a result of a failure in food distribution or production.
What illnesses are brought on by famine? "We have known for a long time that dietary stress and famine can have long-term health repercussions, including type 2 diabetes, schizophrenia, and hypertension, and that some of these problems may be passed down from generation to generation.Famine is characterized by an extremely high mortality rate as a result of a failure in food distribution or production. This growth can be attributed to two, and frequently even three, orders of diseases. The first condition is general hunger disease, which is marked by wasting and inanition.Famine is characterized by an extremely high mortality rate as a result of a failure in food distribution or production.To learn more about Famine refer to:
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