What do sharks use claspers for? F. startle other fish G. increase maneuverability H. transfer sperm while mating J. hold on to prey while feeding
Answers
Sharks use claspers to transfer sperm during mating. Claspers are specialized reproductive organs found in male sharks that are used to transfer sperm into the female's reproductive tract.
The claspers are located on the underside of the shark near the pelvic fins and are used to grip onto the female during mating. This allows the male to transfer sperm more effectively and increases the chances of successful fertilization. Claspers are not used for feeding, maneuverability, or startling other fish. Sharks use claspers as part of their reproductive system. Claspers are modified pelvic fins that are found on male sharks, and they are used to transfer sperm during mating.
During mating, the male shark will use his claspers to insert sperm into the female shark. The claspers have a groove on the underside that allows for the transfer of sperm to the female's reproductive tract.
The process of mating can be quite violent for sharks, and males will often bite onto the female's pectoral fin or body to hold on during the mating process. The use of claspers allows for the efficient transfer of sperm, which is important for successful reproduction in sharks.
It's worth noting that not all species of sharks have claspers. Some species, such as the hammerhead shark, have an internal fertilization system, where the male shark uses modified pelvic fins called "clasper sacs" to deliver sperm to the female's reproductive tract.
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Related Questions
A study conducted for the Trybow chicken company in 2000 proved that chickens receiving antibiotic treatment do not harm those who eat it. The data was collected from a sample of 3 chickens and was conducted by a company that is not licensed in conducting animal testing. All of the other studies found in scientific journals prove that antibiotics used to treat chickens are harmful to human beings that eat it. Evaluate how credible this data is using 4 of the criteria presented in the chapter. Make sure to present it in a bullet point format.
Answers
Here are four criteria that can be used to evaluate the credibility of the data presented in the study conducted for the Trybow chicken company in 2000:
Sample size: The study only included 3 chickens, which is a very small sample size. A larger sample size would be needed to draw reliable conclusions about the effects of antibiotic treatment on chickens.Source of data: The data was collected by a company that is not licensed to conduct animal testing, which raises questions about the reliability and validity of the data. It is important to use data collected by trained and qualified professionals to ensure the validity and reliability of the results.Methodology: The study did not provide any information about the methodology used to collect the data or to analyze the results, which raises questions about the validity and reliability of the study. A well-designed study should include a clear methodology that is explained in detail.Conclusion: The study concluded that antibiotics used to treat chickens do not harm those who eat it, but this conclusion is contradicted by other studies that have found that antibiotics used in animal agriculture can harm human health. It is important to consider the consensus of scientific evidence when evaluating the credibility of a study.Learn more about credibility Visit : brainly.com/question/24266723
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Using Chargaff’s (Base Pairing) rule, write the complimentary DNA strand.
TTA CGT CAG GGG TAT CGA AAC
Answers
The complementary DNA strand of the given sequence, according to the Chargaff's rule is: AAT GCA GTC CCC ATA GCT TTG.
DNA is Deoxyribonucleic Acid. It is the genetic material of most of the living organisms. It is a double-stranded structure, consisting of sugar and phosphate backbone and the nitrogenous bases emerging out of it perpendicularly. the nitrogenous bases of both the strands form hydrogen bonds between them to give a staircase like appearance.
Chargaff's rule states that in any DNA structure, the amount of guanine equals the amount of cytosine and the amount of adenine equals the amount of thymine. This happens because adenine forms double hydrogen bonds with thymine and guanine forms triple hydrogen bonds with cytosine.
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what would this represent?
a) multicellular, eukaryote, autotroph
b) unicellular, eukaryote, autotroph
c) multicellular, prokaryotic, heterotroph
d) unicellular, prokaryotic, autotroph
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Answer:
A
Explanation:
Are gender traits completely a result of societal expectations?
Answers
Answer:
No. Gender traits in humans are largely determined by biophysical processes.
What was the background information that Schleiden and Schwann
needed to perform their experiments about cells?
Answers
Theodore Schwann and Mattias Schleiden needed the background information about cell is that how cells originate and functions in the body of animals as well as plants.
What is the contribution of Schwann and Schleiden?Schwann and Schleiden proposed the cell theory, which states that all living organisms are composed of one or more cells. The cell is the basic unit of structure and function in organisms.
Each cell arises from a pre-existing cell.
The basic information that Schwann and Schleiden needed before performing the experiments about cells is how cell-derived in this nature become the most important part of life in living entities.
They also wanted to know the actual function and metabolic activities of the cell.
Therefore, it is well described above.
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How does the movement of energy and matter through the food chain cause the average mass of the whale to change? Please help me out.
Answers
Answer:
The ten-percent rule toward energy transfer among levels of a trophic system is one that has been used to study ecosystems’ energy dynamics for a long time.
Explanation:
Food chains describe the transfer of energy from its source in plants, through herbivores, up to carnivores and onto higher order predators (Sinclair et al. 2003). These different “levels” are known as trophic levels, which is properly defined as the position within the food chain or energy pyramid that an organism can be found. But how much energy is passed along through each level? This is where the ten-percent rule comes in.
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How can organisms that die without reproducing still propagate their genes
Answers
Answer:
They can help the survival or reproduction of relatives who carry copies of the same genes.
Name the bond which joins two sachharide molecules
Answers
Answer:
glycosidic bond
Explanation:
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Refer to this portion of a dichotomous key for fish identification to answer the question. 1. (a) Has a single dorsal fin ® 5 (b) Has a double dorsal fin ® 2 5. (a) Has small fin on back near tail ® 6 (b) Has no fin on back near tail ® 7 6. (a) Has barbs near the mouth ® Catfish (b) Does not have barbs near the mouth ® 10 What do the numbers after the arrows represent? the number of the question that should be considered next the number of steps remaining before the organism is identified the number of questions that need to be answered the number of species that have the described characteristic
Answers
The numbers after the arrows in the given dichotomous key represent the number of questions that should be considered next.
Dichotomous keys are used to identify and classify organisms based on their characteristics. The key presents a series of paired questions or statements that require a yes or no response. The numbers after the arrows in the key represent the number of the next question that should be considered based on the response to the previous question. In this example, if the fish has a single dorsal fin, the key directs the user to question 5, which asks whether the fish has a small fin on its back near the tail. If the answer is yes, the fish is identified as a catfish, but if the answer is no, the user is directed to question 7. By following this process of elimination, the user can eventually arrive at the correct identification of the organism.
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A genetic defect diminishing branched-chain alpha-keto acid dehydrogenase (BCKAD) complex activity results in ____.
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A genetic defect diminishing branched-chain alpha-keto acid dehydrogenase (BCKAD) complex activity results in Maple Syrup Urine Disease (MSUD).
Maple Syrup Urine Disease (MSUD) is a metabolic disorder caused by a genetic defect that reduces the activity of the branched-chain alpha-keto acid dehydrogenase (BCKAD) complex. This complex is responsible for breaking down branched-chain amino acids (BCAAs), which include leucine, isoleucine, and valine.
In individuals with MSUD, the diminished activity of the BCKAD complex leads to the accumulation of toxic byproducts, specifically alpha-keto acids derived from the BCAAs. These byproducts are then excreted in the urine, giving it a characteristic sweet odor similar to that of maple syrup.
The accumulation of toxic substances affects the normal functioning of the body, particularly the central nervous system. If left untreated, MSUD can result in severe neurological problems, developmental delays, and even coma or death.
Management of MSUD typically involves dietary restrictions on BCAAs to minimize their intake and the use of specialized formulas to ensure adequate nutrition while preventing the build-up of toxic metabolites. Early diagnosis and intervention are crucial for individuals with MSUD to prevent or minimize the associated health complications.
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which statement best describes unreplicated chromosomes in a 2n cell where n=3 and in a 3n=6 cell.
Answers
Answer:
Explanation:
The 2n and 3n cells will both have 6 chromosomes; however, the 2n cell will have 3 different types of chromosomes and the 3n cell will have 2 different types of chromosomes.
When we write a ploidy number the "n" refers to the number of different types of chromosomes in a set and the number that precedes "n" indicates the number of sets present.
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Which of the following is a feature of bovine growth hormone use in the United States?
a) It has been banned by the FDA.
b) It is used to increase milk production in cows.
c) It is a natural hormone produced by cows.
d) It has no effect on human health.
Answers
Bovine growth hormone use in the United States is primarily used to increase milk production in cows. This hormone is not a natural hormone produced by cows and is instead artificially administered.
While there have been concerns raised about the potential health effects of consuming milk from cows treated with bovine growth hormone, the FDA has not banned its use. Some studies have suggested that the use of this hormone may increase the risk of certain health problems in humans, such as cancer and early puberty, but more research is needed to fully understand these risks. Overall, while the use of bovine growth hormone is controversial, it remains legal and commonly used in the US dairy industry.
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Which of the following agents requires an in-line her and non polyvinyl chloride tubing for adminstration ? A. Busultan B. Daunorubicin C. Cabazlexel D. Pegaspargne
Answers
The agent that requires an in-line filter and non-polyvinyl chloride tubing for administration is Busulfan.
What is Busulfan? Busulfan is a medication that is used in chemotherapy to treat various types of cancer. It is a cell cycle non-specific alkylating agent, which means it is active throughout the cell cycle, and it can harm cells at any point during their cycle.
Alkylating agents function by adding alkyl groups to DNA molecules' guanine nucleotide bases, resulting in the cells' DNA being unable to replicate or divide. This causes the cells to die.
What is PVC tubing? Polyvinyl chloride (PVC) is a type of plastic that is frequently utilized in medical devices like tubing, bags, and infusion sets. In healthcare settings, PVC is a popular choice because it is inexpensive, light, and clear, making it simple to see the contents of the tube or bag.
PVC, on the other hand, may cause health issues in patients if it comes into contact with certain chemicals. In addition to PVC tubing, filters are used to prevent contaminants from entering the patient's bloodstream and causing infections. Certain drugs are associated with a higher risk of particle contamination, necessitating the use of filters.
The agent that requires an in-line filter and non-polyvinyl chloride tubing for administration is Busulfan.
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the punnett square on p. 70 of your lab manual shows the genotypes of two parents for trait r. use this punnett square to answer the questions in this exercise. trait r is the mendelian trait in humans for tongue rolling. the allele for the ability to roll the tongue (r) is dominant over the allele for the inability to roll the tongue (r). what is the mother's genotype? group of answer choices
Answers
The genotypes of two parents for trait r is the mendelian trait in humans for tongue rolling. the allele for the ability to roll the tongue (r) is dominant over the allele for the inability to roll the tongue (r). The mother's genotype The mother is heterozygous (Rr) for the tongue-rolling trait.
There are two main types of genotypes that is homozygous and heterozygous. If an organism is homozygous for a gene, referred that they inherit two of the same versions of the gene. If an organism has a heterozygous genotype, referred that they inherit two different versions of a gene.
Genotype referred to the genetic makeup of an organism which described about an organism's complete set of genes. It is used to refer to the variant forms of a genes that are carried by an organism. The ability to roll the tongue is dominant over the allele for the inability to roll the tongue.
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which country has the flamingo as its national bird?
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a heterozygous contains two different alleles of the same gene. just before meiosis begins the two different alleles are found on:
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On homologous chromosomes, heterozygous genes contain different alleles of the same gene whereas homozygous genes have identical alleles of the same gene.
All cell types whose role is not the production of gametes go through mitosis, which is a process that occurs in somatic cells. Before every mitotic division, each chromosome is duplicated, resulting in a complete set of chromosomes in the nucleus of each new cell. Barring random mutations, each consecutive duplicate cell will have the same genetic makeup as its parent due to the inheritance of the same chromosomal set and biological environment.
This is advantageous for both replacing damaged tissue and encouraging growth and development from an embryonic state.
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Why do potato plants no longer need to use glucose from starch in respiration once they have grown above ground?
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Draw a neat and labelled diagram of the 'Experimental set-up of three-bean seed experiment' and mention the necessity of each condition for the germination of seeds.
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The experiment consists of three bean seeds, each placed in a different condition. The first seed is placed in water, the second seed is placed in air, and the third seed is placed in a moist cloth.
What occurs in the process of germination?The seeds are then placed in a warm, dark place for a few days. The necessity of each condition for the germination of seeds is as follows:
Water: Seeds need water to germinate. The water provides the moisture that the seed needs to start the process of cell division and growth.
Oxygen: Seeds also need oxygen to germinate. The oxygen is used by the seed to respire, which provides the energy that the seed needs to grow.
Warmth: Seeds need warmth to germinate. The warmth provides the energy that the seed needs to start the process of cell division and growth.
In the three-bean seed experiment, the seed that is placed in water will germinate the fastest, followed by the seed that is placed in the moist cloth. The seed that is placed in air will not germinate, or it will germinate much more slowly.
This experiment shows that water, oxygen, and warmth are all necessary for the germination of seeds.
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how is starch in the sweet potato is produced from carbon dioxide in the air.
Answers
Answer:
In photosynthesis, plants use light energy to produce glucose from carbon dioxide. The glucose is used to make cellulose fibers, the structural component of the plant, or is stored in the form of starch granules, in amyloplasts. Toward the end of the growing season, starch accumulates in twigs of trees near the buds.
A flora found in the same location as the resident flora, but which remains only for a given amount of time, is called a(n) __________ flora.
Answers
The answer to the given question is the transient flora. Transitory flora refers to the bacteria which is found on the skin surface and in the mucous membranes, which is in the process of acquiring new sources of nutrients. Transitory flora are also referred to as 'passengers'.
They are able to survive on the skin surface only for a short period of time. They can be removed by a simple hand-washing operation with soap. In general, microorganisms that live on or within a host are referred to as flora. The body is home to two distinct groups of microorganisms: the transient flora and the resident flora.The transient flora consists of microorganisms that do not normally live in or on the body, but that can be acquired by contact with the environment. They are called “transient” because they do not establish themselves on the body; they are merely passing through.
Transitory flora refers to the bacteria which is found on the skin surface and in the mucous membranes, which is in the process of acquiring new sources of nutrients. Transitory flora are also referred to as 'passengers'. They are able to survive on the skin surface only for a short period of time. They can be removed by a simple hand-washing operation with soap. In general, microorganisms that live on or within a host are referred to as flora. The body is home to two distinct groups of microorganisms: the transient flora and the resident flora.The transient flora consists of microorganisms that do not normally live in or on the body, but that can be acquired by contact with the environment. They are called “transient” because they do not establish themselves on the body; they are merely passing through. The transient flora is often a source of disease-causing organisms.
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Answer:
A flora found in the same location as the resident flora but which remains only for a given amount of time is called a transient flora.
Explanation:
Transient flora refers to microorganisms that temporarily colonize the skin or mucous membranes but do not establish a permanent presence. These organisms are typically acquired through contact with the environment, objects, or other individuals. They include various bacteria, fungi, and viruses that are introduced to the body but are not part of the regular, established microbial community. They can be easily removed through handwashing or other hygiene practices.
Understanding the concept of transient flora is important for maintaining good hygiene and preventing the spread of pathogens. Proper hand hygiene and sanitation practices play a significant role in reducing the risk of infection by transient flora and maintaining overall health and well-being.
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Two Heterozygous white (brown fur is recessive) rabbits are crossed.
What is the genotype(s) of the parents?
A. Both FF
B. Both ff
C. FF, ff
D. FF, Ff
E. Both Ff
F. FF, Ff, ff
Answers
If two Heterozygous white (brown fur is recessive) rabbits are crossed the genotypes of the parents will be both Ff. The correct answer is E.
The question states that two heterozygous white rabbits are crossed.
Since brown fur is recessive, this means that the genotype for white fur is dominant, represented by the letter F, and the genotype for brown fur is recessive, represented by the letter f. Therefore, the possible genotypes for the parents are FF, Ff, or ff.
To determine the genotypes of the parents, we can use a Punnett square. When two heterozygous rabbits are crossed, the possible genotypes for their offspring are FF, Ff, and ff, with a ratio of 1:2:1. This means that the genotype of the parents must be Ff.
Therefore, the answer is option E: Both Ff. This means that both parents have one dominant allele (F) and one recessive allele (f) for fur color.
When they are crossed, there is a 25% chance of their offspring inheriting two recessive alleles (ff) and having brown fur, and a 75% chance of their offspring inheriting at least one dominant allele (F) and having white fur.
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A plant is heterozygous for the flower color purple (Pp) and for smooth petals (Ss). If the dominant alleles are on the same chromosome and the recessive alleles are on the homologous chromosome, what are the possible combinations of alleles in the plant’s gametes?
Answers
In a plant heterozygous for flower color (Pp) and smooth petals (Ss), the possible combinations of alleles in its gametes are PS, Ps, pS, and ps.
In this scenario, the plant is heterozygous for two traits: flower color and petal texture. The flower color trait has two alleles, with purple (P) being dominant and white (p) being recessive. The petal texture trait also has two alleles, with smooth (S) being dominant and wrinkled (s) being recessive. Since the dominant alleles for both traits are on the same chromosome and the recessive alleles are on the homologous chromosome, the plant can produce four different combinations of alleles in its gametes: PS, Ps, pS, and ps.
During meiosis, the homologous chromosomes separate, and each gamete receives one allele for each trait. The possible combinations are formed through independent assortment, meaning that the inheritance of one trait does not influence the inheritance of the other trait. Thus, each gamete can contain any of the four possible combinations of alleles for the flower color and petal texture traits: PS, Ps, pS, and ps.
These different combinations of alleles in the gametes contribute to genetic variation and the potential for various phenotypic outcomes in the offspring of this plant through fertilization and subsequent genetic recombination.
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3. Hydrogen peroxide is used as an antiseptic to kill bacteria in cuts and abrasions. Many of these are catalase positive, yet they are still killed by the actions of hydrogen peroxide. Why does this occur
Answers
Answer: Hydrogen peroxide is used as an antiseptic to kill bacteria in cuts and abrasions. Many of these bacteria are catalase positive,
Explanation: that’s it
vitamin k can be synthesized by bacteria in the gut in the form of menaquinones, it is thought that it provides ________________portion of the human vitamin requirement.
Answers
Vitamin k can be synthesized by bacteria in the gut in the form of menaquinones, it is thought that it provides a Major portion of the human vitamin requirement.
Vitamin K :There are two forms of vitamin K, which is a fat-soluble vitamin. The most common type is phylloquinone, which can be found in green leafy vegetables like spinach, kale, and collard greens. Menaquinones, the other type, can be found in fermented foods and some animal products. Menaquinones can also be made in the body by bacteria.
Is vitamin K great to take ordinary?An essential vitamin is vitamin K. Broccoli, Brussels sprouts, and other leafy green vegetables all contain it. Males over the age of 19 should consume 120 milligrams per day and females over the age of 19 should consume 90 milligrams per day. While pregnant and bosom taking care of, 90 mcg ought to be consumed day to day.
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What is the mass/mass percentage of glucose in a solution made by dissolving 3.6 g of glucose in a 140.2 g of water?
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what are the steps in sexual reproduction?
Answers
Answer:
egg and sperm join, zygote froms , meiosis produces sex cells , new organism develops
Which of the following terms refers to a structure on both sides of the body or body part?
Bilateral
Ecchymosis
Edema
Observation
Answers
The term that refers to a structure on both sides of the body or body part is bilateral. Bilateral means "having two sides" and is commonly used in medical terminology to describe symmetrical structures or conditions that affect both sides of the body. The correct option is Bilateral.
For example, bilateral knee pain refers to pain that is felt in both knees, while bilateral hearing loss refers to a hearing impairment that affects both ears.
It is important for healthcare professionals to use the correct terminology when describing conditions or symptoms that affect the body. Using precise language helps to ensure that there is no confusion or misunderstanding between healthcare providers, and it can also aid in accurately diagnosing and treating patients.
Observation is the act of watching or monitoring a patient's condition, while edema refers to swelling caused by excess fluid in the body's tissues. Ecchymosis, on the other hand, is a medical term used to describe a bruise or discoloration of the skin caused by bleeding under the surface. Hence, Bilateral is the correct option.
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PLEASE HELP!! 25 POINTS!!
What is an example of an ecosystem?
The sun
A forest
A school of fish
A family of lions
Answers
Answer:
A forest
Explanation:
An ecosystem is a unity between a community and its environment that forms a reciprocal relationship.
example
Forest fieldhope it helps ^^
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PLEASE HELP
Which activity is
anaerobic?
A. mile-run
B. weight training
C. stretching
D. jogging
Answers
Weight training activity is anaerobic.
If you lift weights every day, it could be difficult for you to recuperate from exercises. The main drawback of strength training every day is that your body doesn't get a chance to truly heal. If you don't carefully arrange your workouts, this could result in concerns with muscle imbalances or overuse injuries.
What about anaerobic?Anaerobic refers to the body's ability to produce energy without oxygen and implies "without air." Exercises that are anaerobic need brief bursts of energy and are completed quickly while exerting maximal effort. Jumping, running, or heavy weightlifting is a few examples. When engaging in aerobic versus anaerobic activity, your breathing and heart rate change. Your main energy source during aerobic exercises is oxygen. There are numerous health advantages to this kind of exercise. It's a fantastic technique to increase your cardiovascular stamina, grow and retain muscular mass, and shed pounds. Anaerobic exercise should be incorporated into your weekly workout plan on a regular basis in addition to aerobic (or cardiovascular) activity. Exercise that is anaerobic will help you build lean muscle mass in addition to burning fat. Both movements are included in many group fitness sessions, such as Jazzercise. Exercises that require anaerobic energy entail brief, strong bursts of movement. A person's cardiovascular health benefits from both sorts of exercise.However, excessive anaerobic training can break you in the form of injuries, weariness, chronic inflammation, and weight gain if your aerobic base is poor.Learn more about anaerobic here:
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Differentiate between the parts of an atom?
Answers
Answer:
A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons.
Explanation:
An element is a substance that is made entirely from one type of atom. ... A compound is a substance made from two or more different elements that have been chemically joined.