After observing tadpoles swimming in the water, you could infer that all amphibians have gills.
A)true
B)false
Answers
Answer:
true
Explanation:
you could infer it, but that doesn't make it true!
Related Questions
Individuals with high blood pressure are at a higher risk for:OOOOstrokeaneurismheart attackAll of these choices are correct.
Answers
High blood pressure can place increased pressure on the walls of the blood vessels inside the brain, increasing your chances of developing an aneurysm. Also, it forces the heart to work harder to pump blood to the rest of the body. This causes the lower left heart chamber (left ventricle) to thicken. A thickened left ventricle increases the risk of heart attack, heart failure and sudden cardiac death. Moreover, blood vessels damaged by high blood pressure can narrow, rupture or leak. High blood pressure can also cause blood clots to form in the arteries leading to the brain, blocking blood flow and potentially causing a stroke.
So the correct answer is: All of thees choices are correct.
1) H2O
The number of atoms.
Answers
Answer: i believe it is 3 atoms
explanation
H2 means 2 hydrogen the O is a singular atom of oxygen
Some eukaryotic cells move by the restructuring of microfilaments. this enables the cells to send out long projections of the cytoplasm covered in cell membrane. what are these projections called?
Answers
This type of projection is called pseudopodia
A pseudopod is a momentary, armlike extension of the membrane of a eukaryotic cell that faces the direction of motion. Actin filaments make up the majority of the cytoplasm filled pseudopodia, which may also contain microtubules and intermediate filaments.
Pseudopods are employed for ingestion and motility. Pseudopodia enable a cell to move along a substrate by pulling or crawling. Amoeboid movement is the term used to describe cell movement via pseudopodia.
Broad, flat pseudopodia called lamellipodia are employed for locomotion. A mesh like internal network is sustained by microfilaments that form at the leading edge.
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describe how structure is related to function for transport proteins
Answers
function: includes several enzymes that beak down and recycle proteins a cell.
which part of the dna nucleotide contains the genetic code to make the protein?
Answers
The piece of the nucleotide that stows inborn data is the nitrogen base. There are five real bases to be clear adenine, guanine, cytosine, thymine, and uracil.
The setup of these bases in DNA or RNA decides the inborn data in the particle. Hereditary code is the arrangement of nucleotides in deoxyribonucleic corrosive (DNA) and ribonucleic corrosive (RNA) that decides the amino corrosive succession of proteins. However the straight arrangement of nucleotides in DNA contains the data for protein successions, proteins are not made straightforwardly from DNA.
DNA is organized as a twofold helix and is generally situated in the cell core. DNA replication additionally happens inside the cell core. Proteins are enormous particles comprised of at least one long arrangement of amino acids.
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Hi, I just have a question for my science assignment. So basically I decided to construct a drawing/ model of “ movement and matter and energy from plants into other organisms” and I have to show how mass and energy are conserved before and after each interaction can anyone give me any ideas on what to draw/model?
Answers
Answer:
Not sure if this is similar or the right idea but if this is cellular respiration where energy of something eaten is given to the eater just draw an arrow to the eater and than just explain some more not sure if this answers your question
which of the following describes the role of glutamine synthetase in protein catabolism? i. glutamine synthetase converts glutamate and ammonia to glutamine using one molecule of atp ii. the reaction catalyzed by glutamine synthetase is reversible iii. the reaction catalyzed by glutamine synthetase removes excess nitrogen (in the form of toxic ammonia) from protein degradation iv. glutamine synthetase converts glutamine to glutamate
Answers
The role of glutamine synthetase in protein catabolism is: (iii) the reaction catalyzed by glutamine synthetase removes excess nitrogen (in the form of toxic ammonia) from protein degradation.
Glutamine synthetase is an enzyme. It condenses glutamate and ammonia to form glutamine. It controls the use of nitrogen inside cells. The location of the enzyme in the body is: brain, kidneys, and liver.
Protein degradation is carried out by a process called ubiquitination where ubiquitin tags are added to the protein destined for degradation. The ubiquitin tags are not added randomly instead they are added to the amino group of the side chain of a lysine residue.
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Predict the results of a mating between a hemophiliac male and a carrier female. Hemophilia is a SEX LINKED, RECESSIVE trait. Fill in the following information.
21. Genotype male _______
22. Genotype female _______
23. Punnett square:
% of total offspring:
24. % normal males ________
25. % hemophiliac males ________
26. % normal females _______
27. % hemophiliac females _______
28. % carriers _______
Answers
21.Genotype male: XhY
22. Genotype female: XHXh
23. Punnett square: XH Xh
24. % normal males: 25% (1 out of 4)
25. % hemophiliac males: 25% (1 out of 4)
26. % normal females: 25% (1 out of 4)
27. % hemophiliac females: 25% (1 out of 4)
28. % carriers: 50% (2 out of 4)
What is a Punnett square?The Punnett square is described as a square diagram that is used to predict the genotypes of a particular cross or breeding experiment.
We can see from the Punnett square the possible genotypes of the offspring.
We see that there are are four possible genotypes:
XHXh (carrier female) XhXh (hemophiliac female), XY (normal male), Y (normal male).The percentages shows the proportion of each genotype that is among the total offspring which is four.
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Identify each of the following as an example of a scientific theory, a model, or a hypothesis. - In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a - A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a - Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a - The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a Why is it important for biologists and people in biology-related fields to learn physics? Select all that are correct. To learn how to solve complex problems To learn how to communicate scientific ideas To learn how to apply fundamental principles with logic and reasoning To learn how to plug numbers into equations and calculate answers To learn how to use math in science and make estimates To learn how to interpret and apply different representations of information To learn how to interpret quantitative measurements
Answers
- In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a model.
- A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a hypothesis.
- Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a scientific theory.
- The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a model.
It is important for biologists and people in biology-related fields to learn physics because:
- To learn how to solve complex problems
- To learn how to communicate scientific ideas
- To learn how to apply fundamental principles with logic and reasoning
- To learn how to interpret and apply different representations of information
- To learn how to interpret quantitative measurements
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Identify the following situations as a hypothesis, a theory, or a model.
i. In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are.
ii. Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations.
iii. A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer.
A) i. - hypothesis; ii. - theory; iii. - model
B) i. - model; ii. - theory; iii. - hypothesis
C) i. - theory; ii. - hypothesis; iii. - model
D) i. - model; ii. - hypothesis; iii. - theory
E) i. - theory; ii. - model; iii. - hypothesis
What is the thin layer of gray matter that composes the outer layer of the cerebrum
Answers
describe the stretch-shortening cycle (ssc), and explain how it relates to exercise.
Answers
The Stretch Shortening Cycle (SSC) is a reactive power storage and release process that occurs in muscles and tendons during exercise. It is a neuromuscular phenomenon that has been shown to improve muscular power output and improve muscle contractile properties in response to rapid, explosive movements.
The Stretch Shortening Cycle (SSC) is the action of contracting a muscle after it has been stretched, such as when jumping, hopping, or running. The process is initiated when a muscle is pre-stretched prior to the concentric phase of a movement, allowing for elastic energy to be stored in the muscle-tendon complex. This stored energy is then used to produce more power during the concentric phase of the movement, leading to an overall increase in muscular force production. The stretch reflex is a critical component of the SSC, as it helps to facilitate the transition from the eccentric to the concentric phase of the movement. Some exercises that utilize the SSC include plyometrics, which involve rapid, explosive movements such as jump training, sprints, and agility drills. These exercises are designed to enhance muscle power and reactive strength, which can improve athletic performance in sports that require explosive movements, such as basketball, soccer, and volleyball. In conclusion, the SSC plays a significant role in improving muscle power output and contractile properties during exercise. It is a neuromuscular phenomenon that is facilitated by the stretch reflex and is critical for producing rapid, explosive movements in sports and other athletic activities.
The stretch-shortening cycle (SSC) is a neuromuscular phenomenon that occurs during certain types of movements, particularly in activities involving jumping, running, and throwing. It involves a sequence of muscle actions that consists of three phases: eccentric, amortization, and concentric.
1. Eccentric Phase: The SSC begins with the eccentric phase, during which the muscle lengthens under tension. This phase occurs when a muscle is stretched or loaded prior to a contraction. For example, when you prepare to jump, your leg muscles lengthen as you lower yourself into a squatting position.
2. Amortization Phase: Following the eccentric phase, there is a brief transition called the amortization phase. This phase is crucial and time-sensitive, as it represents the transition between muscle lengthening and muscle shortening. The muscle quickly changes direction and prepares for the subsequent concentric contraction. It is characterized by a rapid isometric pause, meaning the muscle does not change length significantly during this phase.
3. Concentric Phase: The final phase of the SSC is the concentric phase, during which the muscle contracts and shortens, generating force. In the context of jumping, this is when the leg muscles rapidly contract to propel the body upward.
The SSC is essential for enhancing the efficiency and power of various athletic movements. It leverages the elastic properties of muscles and tendons, as well as the stretch reflex, to generate greater force and power output. Here's how it relates to exercise:
1. Increased Power and Force: The SSC allows muscles to store and release energy, resulting in enhanced power production. When the muscle is eccentrically loaded, it stretches the tendons and stores elastic energy. This stored energy is then rapidly released during the subsequent concentric contraction, resulting in greater force production and movement efficiency. Exercises that utilize the SSC, such as depth jumps or plyometric exercises, can help improve power and explosiveness in athletes.
2. Improved Muscular Performance: By training the SSC, individuals can enhance their neuromuscular coordination, timing, and muscle activation patterns. The rapid transition from eccentric to concentric muscle actions improves the neural pathways involved in coordinating muscle contractions, leading to improved motor performance and efficiency.
3. Injury Prevention: Proper utilization of the SSC can also contribute to injury prevention. The rapid eccentric loading and subsequent concentric contraction help strengthen the tendons, making them more resilient to forces encountered during dynamic movements. Training the SSC can enhance joint stability, decrease the risk of muscle strains, and improve overall movement mechanics.
It's important to note that the SSC should be trained with care, as it places greater stress on the muscles, tendons, and joints. Proper technique, progression, and appropriate training volume should be considered to ensure safety and maximize the benefits of incorporating the SSC into exercise routines. Consulting with a qualified exercise professional can provide personalized guidance based on individual fitness levels and goals.
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Where within the cell does the entire process of respiration take place?
Answers
Answer:
mitochondria THE POWERHOUSE OF THE CELL
Answer:
Both inside and outside the mitochondria
Explanation:
The anaerobic stage of cellular respiration takes place outside the mitochondria, and the aerobic stage of the process takes place within the mitochondria. Chloroplasts are involved in photosynthesis but not in cellular respiration.
Is the cell wall a bacteria?
Answers
Sort of. It CONTAINS bacteria, but if I guessed it would most likely be no, because it contains life cells that are helping the plant of which they are connected to, so If I was to be the most accurate I could, the answer would be NO.
Hope this helps and have a Merry Christmas,
Miri
Phospholipids form the main fabric of the plasma membrane. One feature of phospholipids is that when they are placed in an aqueous solution, they will self-assemble into a double layer (bilayer) that resembles the bilayer of the plasma membrane. This self-assembly occurs because phospholipids are hydrophilic at one end (the phospholipid head) and hydrophobic at the other end (the phospholipid tails).A) hydrophilicB) hydrophilicC) grey on top, yellow on bottomD) grey on bottom, yellow on top E) hydrophilicF) hydrophobicG)hydrophilic
Answers
Phospholipids have a hydrophilic (water-loving) head that is composed of a phosphate group and a glycerol molecule, and two hydrophobic (water-fearing) tails made up of long hydrocarbon chains. The correct answer is F) hydrophobic.
When placed in an aqueous solution, the hydrophobic tails of phospholipids are repelled by water and thus spontaneously come together, forming a bilayer with the hydrophobic tails sandwiched between the hydrophilic heads facing the aqueous environment.
This bilayer forms the main structural component of the plasma membrane, providing a barrier between the extracellular environment and the cell's interior.
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The Jewish belief in a single god was significant because what?
Answers
it spread the idea that there was only one correct set of beliefs
Answer:
Jews believe that there is a single God who not only created the universe, but with whom every Jew can have an individual and personal relationship. They believe that God continues to work in the world, affecting everything that people do. The Jewish relationship with God is a covenant relationship. (change up some words)
the largest meat recall in u.s. history was prompted by the discovery of contamination by
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The largest meat recall in U.S. history was prompted by the discovery of contamination by E. coli bacteria.
In 2008, over 143 million pounds of beef from a California processing plant were recalled due to potential E. coli contamination, resulting in a widespread investigation and increased scrutiny of food safety measures in the meat industry.
The outbreak caused several illnesses and some deaths, highlighting the importance of food safety regulations and monitoring.
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Which is an example of antiracist behavior?
A. Rachel pretends she didn't hear a negative comment about
Latinos.
B. Rachel mentions that some of her best friends are Latino.
C. Rachel says it's wrong to say negative things about Latinos based
on a stereotype.
O D. All of the above
Answers
A map distance of 25 map units between two genes indicates which of the following?
Multiple Choice
A. The genes are 25 millimeters apart
B. 50% of the offspring exhibit recombination between the two genes
C. There are 25 other genes between the two genes of interest
D. 25% of the offspring exhibit recombination between the two genes
Answers
A map distance of 25 map units between two genes indicates 50% of the offspring exhibit recombination between the two genes.
Here correct option is B.
In genetics, a map unit (also known as a centimorgan) represents a unit of genetic distance between two genes on a chromosome. It is a measure of the frequency of recombination between two genes during meiosis.
A map distance of 25 map units between two genes indicates that, on average, 25% of the offspring resulting from a cross between individuals with different alleles at these genes will exhibit recombination between them. Since each crossover event between homologous chromosomes results in a recombination event, the frequency of recombination is proportional to the map distance.
Therefore, the correct interpretation is that 50% of the offspring will exhibit recombination between the two genes when the map distance is 25 map units.
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6. Two functions of bones are to protect body structures and to
A) serve as storage sites for glycogen B) synthesize the vitamins needed for clotting
C) provide sites for ATP production D) act as levers during body movements
Answers
Answer:
D) act as levers during body movements
Explanation:
Spider silk is a material made of proteins that has a strength per gram that is five times that of steel. One feature of some of the toughest spider silks is a high proportion of β sheets that stack tightly together to form crystal-like arrays. Which amino acids would you expect to be common in such crystalline stacks and why?
Answers
Answer:
glutamic acid, because the R group could form ionic bonds
arginine, because the R group could form ionic bonds
tryptophan and tyrosine, because the R groups are small, allowing close stacking
glycine and alanine, because the R groups are small, allowing close stacking
An (5.) _______________ speeds up a chemical reaction which converts a (6.)_______________ molecule or molecules to a (7.)_______________ molecule or molecules. Without an enzyme, many reactions occur at an extremely slow rate – too slow to sustain life. Figure 3 Enzymatic reactions M
Answers
An enzyme speeds up a chemical reaction which converts a reactant molecule or molecules to a product molecule or molecules.
An enzyme when added to a chemical reaction speeds up the rate of reaction. This converts the reactant molecules to product molecules.
What is an enzyme?An enzyme is a biocatalyst which when added to a chemical reaction speeds up the rate of the reaction. This is possible because enzymes decreases the amount of activation energy required by the reactant molecules to collide and form the products.
Reactants are the molecules which undergo chemical and physical change to convert into the products which show different properties than the reactant molecules.
Example of an enzyme catalyzed reaction is the breakdown of starch by the salivary amylase present in the mouth which converts the starch into amylose and amylopectins, which are the units of starch molecule.
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How would the amount of oxygen absorbed by the cells be different in an athlete who is blood doping, compared to a normal athlete?
Answers
The amount of oxygen absorbed by the cells is different in an athlete who is blood doping compared to a normal athlete because this last has less oxygen in the blood to carry out the process of cellular respiration.
Why oxygen is fundamental to getting energy in an athlete?Oxygen is fundamental to getting energy in an athlete because it is a reactant of the process of cellular respiration, thereby it is required to generate ATP, the energy coin of the aerobic cells, and thus produce muscle contraction during physical exercise.
Therefore, with this data, we can see that oxygen is fundamental to getting energy in an athlete and blood doping may increase the level of oxygen intake, thereby leading to a higher production of energy by the same unit of time and thus leading to higher (and illicit) performance.
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is when you give your friends list on your bike you have to pedal harder and faster to keep the same speed acceleration as you had when you’re on your bike alone is for a second or third law
Answers
Which of the following is an inherited behavior? question 11 options: birds that nest near highways not responding to traffic noise. kindergarten students sharing different toys. knowledge of how to play the piano. infant babies breathing as soon as they are born.
Answers
Answer: Infant babies breathing as soon as they are born.
Which type of species interaction was responsible for the evolution of mitochondria and chloroplasts?
Answers
Endosymbiotic theory of evolution is the biological hypothesis that explains the origin of eukaryotic cells from prokaryotic organisms in terms of a symbiotic relationship between the two types of cells. It is believed that a prokaryotic cell entered a host cell, instead of being digested by the host cell, and started to work together.
This hypothesis explains the origin of mitochondria and chloroplasts.What is the endosymbiotic theory?The endosymbiotic theory is the hypothesis that describes how eukaryotic cells evolved from prokaryotic cells. The theory suggests that eukaryotic cells originated from a series of endosymbiotic relationships that occurred between prokaryotic cells, over billions of years.The endosymbiotic theory explains the following events:The origin of mitochondria and chloroplastsThe origin of complex cellsThe origins of eukaryotic organisms that may have ultimately evolved into animals, plants, and fungiThe theory of endosymbiosis explains how the evolution of eukaryotic cells is related to the symbiotic relationships that occurred between two different types of cells. The theory suggests that the mitochondria and chloroplasts in eukaryotic cells were once free-living prokaryotic organisms that became symbiotic with other cells.These cells were engulfed by other cells, but instead of being digested by their host cells, they established a symbiotic relationship. They provided energy and other nutrients to their host cells and, in return, their host cells provided them with a stable environment to live in.The endosymbiotic theory of evolution is supported by various pieces of evidence, including the following:Mitochondria and chloroplasts are similar in size and shape to free-living bacteria.Mitochondria and chloroplasts have their DNA and ribosomes, which are similar to those found in prokaryotic cells.Mitochondria and chloroplasts reproduce by fission, which is similar to the way prokaryotic cells reproduce.
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The vocal cords stretch across the opening of the larynx. True or false??
Answers
Answer:
True
Explanation:
Vocal cords are bands of smooth muscle tissue located in the larynx. When air passes through, the vocal cords vibrate.
Explanation:
The vocal folds, also known popularly as vocal cords, are composed of twin infoldings of mucous membrane stretched horizontally across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.
Explaination of how recombination might interfere with the metabolic functions of operons, such as the lac operon or trp operon of E. coli.
Answers
Recombination is the process of exchanging genetic material between two chromosomes. This process can interfere with the metabolic functions of operons by causing chromosomal rearrangements or mutations that disrupt the normal expression of the operon.
For example, if a gene within the lac operon is rearranged due to recombination, this can affect the expression of the enzymes necessary for lactose metabolism.
Similarly, if a gene within the trp operon is rearranged due to recombination, this can affect the expression of the enzymes necessary for tryptophan metabolism. In either case, the metabolic functions of the operon may be disrupted and the organism may be unable to properly metabolize the relevant substrates.
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which process of genetic recombination involves genes from both parents?crossing overindependent assortmentfertilizationtetrad formation
Answers
The Fertilization is the process of genetic recombination involves genes from both parents.
Fertilization is described because the union of gametes. During fertilization, sperm and egg fuse to shape a diploid zygote to provoke prenatal development. In mammals, fertilization entails a couple of ordered steps, which includes the acrosome reaction, zona pellucida penetration, sperm–egg attachment, and membrane fusionGenetic fertilization is the procedure of fertilization of male gametes with the oospore.
It includes numerous elements that include - synergids, egg, crucial cee, antipodals, etc. Synergids - They are haploid cells that shape finger-like projections.Fertilization may be described because the union of haploid gametes, the spermatozoa and the oocyte, hereto known as egg, to repair the diploid state, shape a zygote via the procedure of egg activation, and start a chain of mitotic divisions that outcomes in mobileular differentiation and embryo development.
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In order for you to be able to run, ________ must relay messages from your central nervous system to your leg muscles. a the reticular formation b motor neurons c the cerebellum d interneurons e the autonomic nervous system
Answers
In order for someone to be able to run, motor neurons must relay messages from one's central nervous system to their leg muscles.
Correct option is B.
Motor neurons are special cells responsible for sending signals from the central nervous system to the peripheral nervous system. They are part of the efferent division of the nervous system, also known as the “going out” part. Motor neurons are often referred to as the fundamental unit of the motor system because they are responsible for carrying the nerve impulses from the brain to the body, in order to execute movement.
Motor neurons carry information from the central nervous system to the muscles and glands, instructing them to contract, relax, or to produce a secretory response. Nerve impulses travel from the brain, down the spinal cord, and are then sent to the muscles.
Correct option is B.
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In general, the brains of younger mammals exhibit greater __________ when compared to the brains of older mammals: group of answer choices
Answers
In general, the brains of younger mammals exhibit greater neurons when compared to the brains of older mammals.
Brain is the regulatory organ of the complete body. It directs and regulates all the activities of the body. The brain is divided into left and right hemispheres. The right hemisphere controls left side of the body whereas the left hemisphere controls right side of the body.
Neurons are the cells that mediate the transport of signals across the whole body. They are also called nerve cells. Neurons are the largest cell of the body. The structure of the cell comprises of a cell body, emerging out of it are various projections called dendrites. A long axon emerges from one side and ends in axon terminal.
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