the mouth of the shark is part of which organ system?
Answers
Answer:
Oral cavity
Explanation:
its first organ from which food enter
Related Questions
PLEASE HELP
Experimental question: At what pH and amount of substrate would the enzyme amylase would have the most amount of product (enzyme activity)?
Whats your Hypothesis
Answer:
Answers
1. What does autosomal recessive mean?
2. Why is autosomal dominant more probable of expressing a disease?
3. What happens in a translocation genetic abnormality?
4. When does a nondisjunction occur and what condition does it lead to?
Answers
Autosomal recessive refers:
Both copies of the gene must be abnormal for the trait or disorder to manifest. If an individual inherits only one abnormal gene, they are considered carriers of the trait but do not typically show any symptoms. Autosomal recessive disorders are more likely to occur when both parents are carriers of the abnormal gene.Autosomal dominant inheritance:
Autosomal dominant inheritance means that a single copy of the abnormal gene from one parent is sufficient to cause the trait or disorder to be expressed. This is why autosomal dominant disorders are more likely to be expressed compared to autosomal recessive disorders. If an individual inherits the abnormal gene from one parent, they have a 50% chance of inheriting the disorder.Translocation genetic abnormality:
This occurs between non-homologous chromosomes or between two homologous chromosomes. Translocations can be balanced, meaning no genetic material is lost or gained, or unbalanced, resulting in the loss or gain of genetic material.Nondisjunction:
Nondisjunction can occur during meiosis, the cell division process that produces sperm and eggs, leading to gametes with an abnormal number of chromosomes. Nondisjunction can occur during meiosis, the cell division process that produces sperm and eggs, leading to gametes with an abnormal number of chromosomes.Thus, when two copies of a defective gene, one from each parent, are necessary for the expression of a feature or condition, the inheritance pattern is said to be autosomal recessive. One copy of the faulty gene from one parent is all that is required for the characteristic or condition to manifest due to autosomal dominant inheritance. A section of one chromosome separates and affixes to another chromosome in a translocation genetic disorder. When chromosomes do not correctly split during cell division, a condition known as nondisjunction occurs, which leads to an aberrant chromosomal distribution in the daughter cells.
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How are Protista similar to bacteria
Both are comprised of
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Answer:
Both bacteria and protists have cell membranes made of chemicals called phospholipids
how many sulfur atoms are in the formula So2
Answers
Answer: 2. Each SO2 molecule contains 2 atoms of oxygen.
Explanation:
Answer: 1 sulfur atom
Explanation:
17.
Which structure is responsible for allowing
materials into and out of an animal cell?
Answers
People have built canals and levees to divert water away from its natural flow and prevent floods in residential areas near Florida's Everglades.How have these changes affected the Everglades
Answers
Answer:
The everglades begins to start flooding
Explanation:
The everglades soon becomes a wetland and all the area has vast amounts of water making it harder to move on and why it has the wet season, which there is the most water.
Answer:
Areas of wetland have been filed in for houses
Explanation:
explain the modification of root , leaf , stem in a plant individually
Answers
The main parts of a plant are the roots, stem, and leaves. Here's an explanation of the modification of root, leaf, and stem in a plant individually:
Modification of Root: Roots are the underground part of the plant that anchor the plant to the soil and absorb water and nutrients from the soil. However, roots can be modified to perform other functions. Some common modifications of roots include:Storage roots: These roots are modified to store food and water for the plant. Examples include sweet potatoes and carrots.Prop roots: These roots grow from the stem and provide additional support for the plant. Examples include corn and banyan trees.Adventitious roots: These roots grow from the stem or leaves and help the plant to cling to a support. Examples include ivy and orchids.Modification of Leaf: Leaves are the main organs of photosynthesis in plants. They absorb light and use it to make food for the plant. However, leaves can be modified to perform other functions. Some common modifications of leaves include:Spines: These modified leaves protect the plant from herbivores. Examples include cactus and agave.Tendrils: These modified leaves help the plant climb or attach to a support. Examples include pea and grape plants.Bracts: These modified leaves are often brightly colored and help to attract pollinators. Examples include poinsettias and dogwoods.Modification of Stem: Stems are the main structural supports of the plant. They hold up the leaves and flowers and transport water and nutrients between the roots and leaves. However, stems can be modified to perform other functions. Some common modifications of stems include:Stolons: These horizontal stems grow above the ground and produce new plants at nodes. Examples include strawberries and spider plants.Rhizomes: These horizontal stems grow underground and produce new shoots and roots. Examples include ginger and bamboo.Tubers: These enlarged, underground stems store food for the plant. Examples include potatoes and yams.What is modification?Modification refers to the process of changing or adapting something from its original form to better suit a particular purpose or function. In the context of plants, modification refers to the changes in the structure and function of plant parts such as roots, stems, leaves, and flowers to better adapt to their environment or serve a specific purpose.
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In Drosophila melanogaster, X-ray induced mutation resulted in flies with variegated eye color. This was caused by all but one of the following. Choose the incorrect statement:genetic mutation of the w+ (red) gene to w (white) in some, but not all cells of the flyX-ray generated translocationvariable spreading of heterochromatinfacultative heterochromatin
Answers
In Drosophila melanogaster, X-ray induced mutation resulted in flies with variegated eye color. The following statements are correct regarding it except one which "X-ray generated translocation is responsible for variegated eye color."
What is variegated eye color?In Drosophila melanogaster, X-ray-induced mutation can result in flies with variegated eye color. Variegated eye color is a kind of gene mutation in which an organism's eye color varies from normal. This mutation causes the eye color to change from red to white in some, but not all, cells of the fly.
The incorrect statement from the given options is "X-ray generated translocation." This statement is not responsible for variegated eye color. Variegated eye color is due to genetic mutation of the w+ (red) gene to w (white) in some, but not all, cells of the fly. X-ray generated translocation is a type of gene mutation. It causes changes in genetic material that cause the chromosomes to break and recombine in a non-reciprocal manner, resulting in the transfer of a chromosomal section to a non-homologous chromosome. X-ray generated translocation is not responsible for variegated eye color. Therefore, this statement is incorrect.
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Can i get some help on this
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Which event takes place first in the stages before the birth of a star?
Answers
Answer: The contracting cloud is then called a protostar. A protostar is the earliest stage of a star's life. A star is born when the gas and dust from a nebula become so hot that nuclear fusion starts.
Explanation:
The Hershey-Chase experiment, in which bacteria were infected with radioactively labeled bacterial virus, provided evidence that DNA carries genetic information by showing that A. the bacterial virus injected its 355-labeled proteins into the cell. B. blender treatment after infection with virus prevented the production of progeny virus particles. C. the production of progeny virus required the injection of viral DNA into the cell. D. 32P-labeled bacterial virus could not produce progeny virus after blender treatment.
Answers
The Hershey-Chase experiment, in which bacteria were infected with radioactively labeled bacterial virus, provided evidence that DNA carries genetic information by showing that the production of progeny virus required the injection of viral DNA into the cell.
Therefore, option C is correct.Why did the Hershey-Chase experiment provide evidence that DNA carries genetic information?The Hershey-Chase experiment provided evidence that DNA carries genetic information because the production of progeny virus required the injection of viral DNA into the cell.
Hershey and Chase used T2 bacteriophages, which infect Escherichia coli, to demonstrate that the genetic material in cells is DNA rather than protein. T2 bacteriophages were made up of DNA and protein, making them perfect for the experiment. They created two batches of T2 bacteriophages, one with 35S and one with 32P, radioisotopes that label protein and DNA, respectively. Hershey and Chase infected two batches of E. coli with these radioactive T2 bacteriophages. After allowing time for the virus to replicate within the bacterial host, Hershey and Chase disrupted the T2 virus shells, allowing the bacterium to recover from infection.
They then centrifuged the bacterial cultures in a blender to separate the virus shells, which remained outside the bacterial cells, from the infected bacterial cells. After centrifugation, Hershey and Chase observed that the bacterial cells that were infected with 32P-labeled virus contained most of the radioactivity, indicating that the labeled DNA was injected into the cell, whereas the bacterial cells that were infected with 35S-labeled virus contained only a small amount of radioactivity. Therefore, Hershey and Chase concluded that DNA, rather than protein, is the genetic material in cells.
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A blood test to measure cholesterol and triglycerides in the circulating blood is a(n):
Answers
A blood test to measure cholesterol and triglycerides in the circulating blood is a lipid profile.
The lipid profile assesses several different elements of cholesterol in your blood that play important roles in heart disease development. The test will assess your entire cholesterol profile, which includes your levels of high-density lipoprotein (HDL) or "good" cholesterol, low-density lipoprotein (LDL) or "bad" cholesterol, and triglycerides, a type of fat that is stored in your body. This test is crucial for people with an increased risk of heart disease or with a history of heart disease in their family. The triglyceride blood test measures the amount of triglycerides in the bloodstream. Triglycerides are a type of fat that the body utilizes for energy. People with high triglycerides levels have a higher risk of cardiovascular disease. A blood test is the only way to diagnose high triglycerides, and a lipid panel or a fasting triglyceride test are two types of blood tests that can help diagnose this condition.
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this is not expected to worsen as the climate continues to change: rainfall, monsoons winds, forest fires, areas affected by monsoons
Answers
Answer: monsoon winds
Explanation:
like that of dryopithecus, a modern gorilla mandible has:
Answers
Like that of dryopithecus, a modern gorilla mandible has: a Y-5 molar pattern."
The most distinctive feature of ape dentition, which clearly distinguishes apes (including gorillas) from Old World monkeys, is the Y-5 molar pattern.
What is the nature of the gorilla mandible?The most distinctive feature of ape dentition, which clearly distinguishes apes including gorillas from Old World monkeys, is the Y-5 molar pattern.
The Y-5 pattern refers to the shape of the molars in which the cusps form a Y-shape with five main cusps. This pattern is characteristic of apes and is different from the bilophodont molars seen in Old World monkeys, where the cusps form two pairs of parallel ridges.
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When glucose is converted to pyruvate by glycolysis, the equivalent of ________________ ATPs are produced (Consider hydrogen carriers). When glucose is completely oxidized to CO2 by glycolysis, the linking step, and Krebs cycle, the equivalent of ________________ ATPs are produced (including ATP produced at the ETC).
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When glucose is converted to pyruvate by glycolysis, the equivalent of 2 ATPs are produced (considering hydrogen carriers). When glucose is completely oxidized to CO2 by glycolysis, the linking step, and Krebs cycle, the equivalent of 36 to 38 ATPs are produced (including ATP produced at the ETC).
Glycolysis is the metabolic pathway by which glucose is converted into pyruvate. During this process, 2 ATPs are produced through substrate-level phosphorylation, which involves the transfer of a phosphate group from a high-energy substrate to ADP, resulting in the formation of ATP.
However, the complete oxidation of glucose to CO2 and H2O, which occurs through glycolysis, the linking step, and Krebs cycle, results in the production of many more ATPs. The number can vary between 36 to 38, depending on the organism and the conditions. During the linking step, the pyruvate produced by glycolysis is converted into acetyl-CoA, which then enters the Krebs cycle, where it is further oxidized to CO2 and H2O.
The energy released during this process is captured in the form of ATP through the electron transport chain, which takes place in the mitochondria and involves the transfer of electrons from reduced cofactors, such as NADH and FADH2, to oxygen, generating a proton gradient that drives ATP synthesis.
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A siamese cat can be one of three colors. Black(B) , Orange (O) or black and orange(BO).
What will be the result of crossing a purebred orange siamese cat with a hybrid (BO)?
Offspring Genotypes
Offspring phenotypes?
What type of inheritance is this?
Answers
Answer:
Offspring Genotypes - ½ BO : ½ OO
Offspring phenotype - ½ Black orange cat : ½ orange cat
Type of inheritance - Co-dominance
Explanation:
This question involves a single gene coding for skin color in Siamese cat. The alleles for orange color (O) and black color (B) are co-dominant i.e. they are both expressed in a heterozygous state.
According to the question, a purebred orange siamese cat (OO) was crossed with a hybrid cat (BO). The following gametes will be produced by each parent:
OO - O only
BO - B and O
Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced from this cross:
½ BO : ½ OO
½BO - Black orange phenotype
½OO - Orange phenotype
- This type of inheritance is CO-DOMINANCE
1. Which of the following is a mitochondrion?
A
B
C
D
O A Structure A
O B. Structure B
O C. Structure C
OD Structure D
Answers
The mitochondrion is shown is - option B. Structure B, can be identified by its characteristic features.
A mitochondrion is an oval-shaped membrane-bound organelle present in the cells of almost all eukaryotic organisms. It is known as the powerhouse of the cell as it produces energy in form of ATP, for the cell through cellular respiration.
It can be identified as bean shape or bread-like oval shape organelleit has two membranes outer membrane and the inner membrane is thrown into various types of folds called cristae is a distinguishable feature.these folds are tubular in plant cells and plate-like in animal and fungal cells.The inner membrane bears functional unit, beads like oxysomesOxysomes take part in ATP synthesisThus, The mitochondrion is shown is - option B. Structure B.
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What do biological anthropologists call the taxonomic group that includes humans and humanlike ancestors, excluding living nonhuman primates?
Answers
Biological anthropologists call the taxonomic group that includes humans and humanlike ancestors, excluding living nonhuman primates as hominins.
In the field of anthropology, hominins can be described as the taxonomic group consisting of modern humans, ancestral humans, and extinct species of humans.
Primates that do not have human-like origin are not a part of the hominins. Humans are the current living species of hominin origin. The ancestors through which humans came into existence are studied through fossils and are extinct hominins.
Biological anthropologists differentiate hominins from other primates based on their special characteristics such as straight posture, having specific language speaking ability, walking on two legs etc.
The study of hominin evolution makes it possible to understand the complexity of modern humans and how they came into existence.
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What is disruptive selection?
Answers
In nature, not all individuals in a biological population has the same reproductive success. Additionally, the reproductive succes of an individual may be related to a heritable trait. Disruptive (natural) selection is operating when indivuals with extreme values for an heritable trait have a greater reproductive succes that the ones with intermediate values for the same trait.
Categorise (Tabulate) the given organisms on the basis of mode of nutrition.
Lice , Mushroom ,Leech ,Algae , Mango ,Human, Yeast, Amoeba
Answers
According to the given species, there are 4 categories of the modes of nutrition:
Parasitic- Lice, Leech.Autotrophic- Algae, Mango.Saprophytic- Mushroom, Yeast.Holozoic- Human, Amoeba.Modes of nutrition are the ways that a living organism can intake its food. There are main two modes: autotrophic and heterotrophic. The heterotrophic mode of nutrition is further classified into various other classes. These can be parasitic, holozoic or saprophytic.
Holozoic mode is the one where food is ingested in liquid or solid form. Parasitic mode is the one where a parasite lives on the or inside the body of the host and obtains its nutrition. Saprophytic mode of nutrition is where the nutrients are obtained from dead and decaying matter.
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generalized bullous fixed drug eruption is distinct from stevens-johnson syndrome/toxic epidermal necrolysis by immunohistopathological features
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The given statement is true. The generalized bullous fixed drug eruption is distinct from Stevens-Johnson syndrome/toxic epidermal necrolysis by immunohistopathological features.
The Generalized bullous fixed drug eruption (GBFDE) is a rare cutaneous drug reaction that occurs as a result of the administration of a single dose of a drug, unlike Stevens-Johnson syndrome (SJS)/toxic epidermal necrolysis (TEN), which occurs as a result of multiple drug exposures. GBFDE has been shown to have different immunohistopathological characteristics than SJS/TEN.SJS and TEN are two forms of erythema multiforme, which can be distinguished by the extent of skin detachment. SJS is classified as a mild form of TEN and can be distinguished by the amount of skin detachment, which is less than 10%. TEN is a severe form of the condition in which more than 30% of the skin is detached. GBFDE is a rare form of cutaneous drug reaction in which the eruption occurs only once, in contrast to SJS/TEN, which can occur several times.
The immunohistopathological characteristics of GBFDE differ from those of SJS/TEN. Immunohistochemical staining was used to compare the immunohistopathological characteristics of SJS/TEN and GBFDE. It was found that the number of apoptotic cells and the intensity of CD8+ T cell infiltration were significantly higher in SJS/TEN than in GBFDE. Furthermore, in SJS/TEN, there was a higher density of CD4+ and CD8+ T cells in the epidermis and dermis than in GBFDE.
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what are two reasons scientist use shared traits to classify organisms
Answers
Answer:
So that we can identify them in the same species.
Explanation:
Many animals have similar species but different genus.
What type of questions can ice cores answer?
A. What the climate was like on earth in the past
B. Why the climate changed in the past
C.What type of wild-life lived on earth in those times
Answers
How do the sporophyte stage and gametophyte stage make a cycle ?
Answers
The diploid zygote, which eventually becomes the sporophyte, is produced by the fusion of the male and female gametes. When a diploid sporophyte reaches maturity, it produces spores by meiosis, which then divide through mitosis to create the haploid gametophyte. The cycle is continued when a fresh gametophyte develops gametes.
What is Sporophyte and gametophyte stage ?The sporophyte symbolises the asexual phase of the plant life cycle, and the gametophyte the sexual phase. Gametophyte and sporophyte are fundamentally different from one another because gametophyte is a haploid and created through meiosis, whilst sporophyte is a diploid and formed through mitosis.
Ferns go through two distinct stages in their life cycle: sporophyte, which releases spores, and gametophyte, which releases gametes. Sporophyte plants are diploid, whereas gametophyte plants are haploid. Alternation of generations is the name given to this type of life cycle.Learn more about Plant life cycle here:
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what does the body do when blood sugar gets too low?
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The condition is called as Hypoglycemia. The body release epinephrine (adrenaline). This may result in hazy vision, trouble focusing, fuzzy thinking, slurred speech, numbness, and sleepiness. Long-term low blood sugar levels can starve the brain of glucose, which can cause seizures, comas, and very rarely even death.
Low blood sugar occurs when your blood glucose levels have dropped so far below target that you must take measures to raise them. Typically, this occurs when your blood glucose level is under 70 mg/dL. However, discuss your personal blood glucose goals and what is too low for you with your diabetes care team.
Another name for low blood sugar is insulin response or insulin shock.
The "fight-or-flight" hormone, epinephrine (adrenaline), is released when blood glucose levels are low. The hypoglycemic symptoms, such as racing heart, perspiration, tingling, and anxiety, can be brought on by epinephrine.
If the blood sugar level falls more, the brain will not receive enough glucose and will stop working properly. This may result in hazy vision, trouble focusing, fuzzy thinking, slurred speech, numbness, and sleepiness. Long-term low blood sugar levels can starve the brain of glucose, which can cause seizures, comas, and very rarely even death.
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The "fight-or-flight" hormone epinephrine (adrenaline), is released when the blood sugar gets too low.
The effects of hypoglycemia, such as a racing heart, sweating, tingling, and anxiety, can be brought on by epinephrine.
The brain ceases to function normally if the level of glucose in the blood continues to decrease. This can result in slurred speech, numbness, drowsiness, difficulty concentrating, confused thinking, and blurred vision. The brain may experience seizures, a coma, or even death if blood glucose levels remain low for an extended period of time, depriving it of glucose.
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weathering and erosion
Answers
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion
Explanation:
Weathering is when a peice of rock breaks down, but does not move. It stays in one place. Erosion on the other hand is when the peice of rock breaks down but is carried away.
Axolotls live in a very specific place in Mexico and are on the endangered species list due to pollution, overfishing, and habitat loss. What
would happen to their population if we were not able to change one of the three threats?
Answers
The planet will someday become congested due to the tremendous rate of population growth. Global warming with increased population density.
What will occur in the event of an overpopulation?The need for food, water, houses, energy, healthcare, transportation, and other resources will rise as the population grows. All of this consumption increases the likelihood of major catastrophes like pandemics, increases conflicts, and degrades the environment.
If a population doesn't have adequate resources, what will happen?When resources are scarce, "competition" intensifies and some organism populations decline. Without access to the materials they require, some people might even become smaller or weaker. The availability of resources may be impacted by environmental changes, natural disasters, and people.
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Which of the following statements regarding water conservation is not true?
a. Only about 1% of Earth's water supply is usable for human consumption.
b. Over half of the states predict water shortages by 2013.
c. While environmentally beneficial, water conservation is a costly endeavor.
d. Failure to conserve water will lead to more water contamination.
Please select the best answer from the choices provided
O
А
0
B C
Answers
Answer:
I guess c...I'm on C.uayayayayay
Water conservation is the traditional and advanced practice of using water efficiently and reducing the wastage of water.
Water conservation is not a costly endeavor even though its environmentally beneficial.
Water conservation can be done as:
Only 1% of the Earth's water is available to humans for consumption, so the contamination of water should not be done. Water shortages have been predicted for nearly half of the states and some of them are facing severe water scarcity. Water conservation can be done free of cost, as doing rainwater harvesting, and also other processes can be applied to conserve water. The failure to conserve water will not lead to more contamination of water.Thus, the correct answer is Option C.
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Where can we find the most mountain chains in the US?
-The eastern US
-The western US
-Alaska
Answers
Answer:
the answer is the eastern US
Explanation:
good luck
In a tragic diving accident, Andrew damaged his spinal cord. As a result, his legs were paralyzed Andrew's
injury was located in his
1) somatic nervous system.
2
autonomic nervous system.
3)
sympathetic nervous system.
4) central nervous system.
Answers
Answer:
4
Explanation:
the spinal cord is part of the central nervous system because it helps keep us up right