Biology High School

If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have

Answers

Answer 1
increased in pitch (frequency). It's the doppler effect.
Answer 2

Answer choices are:

a. a period higher than the original period.

b. a pitch lower than the original pitch.

c. an amplitude lower than the original amplitude.

d. a frequency higher than the original frequency.

____________________________________________________________

Correct answer choice is:

D. A frequency higher than the original frequency.

____________________________________________________________

Explanation:

This is a true case of Doppler's effect. The Doppler effect can be defined as the effect originated by a traveling source of waves in which there is a visible higher variation in pulse for observers towards what the source is progressing and a visible descending shift in rate for observers from what the source is dropping.


Related Questions

The role of the coronary arteries is to __________.

Answers

is to manage the blood circulation to the heart muscle.  The Left main coronary artery (LMCA) distributes blood to the left side of your heart muscle and the Right coronary artery (RCA) distributes blood to the right atrium, right ventricle, sinoatrial (SA) and atrioventicular (AV) nodes, which controls your heart rhythm. 

An individual who has the genotype HbSHbA has the phenotype of:

Answers

having both normal, circular red blood cells and sickle shaped red blood cells in his or her circulatory system.

hope this helped :)

Drug-resistant populations of microbes arise when

Answers

There is variation within the population, due to a mutation. The selection pressure is the drug. The microbes that have the advantageous gene which makes them resistant to the drug are selected for, and reproduce passing on the gene, increasing its allele frequency within the population over time. However, the microbes that do not have the advantageous gene, cannot survive and their number decreases within the popullation.
Final answer:

Drug-resistant microbes arise from the survival and reproduction of microbes that have developed resistance to antibiotics, often due to an incomplete course of treatment. They then create new populations of resistant microbes.

Explanation:

Drug-resistant populations of microbes arise when those microbes are exposed to antibiotics but are not completely killed off. This can happen when a course of antibiotics is not fully completed, allowing some bacteria to survive and develop resistance. When those resistant bacteria reproduce, the resulting offspring also carry the resistance, leading to a whole population of bacteria that cannot be killed by that specific drug. This is why it is essential to always complete a full course of antibiotics.

Learn more about Drug-resistant microbes here:

https://brainly.com/question/32756906

#SPJ6

An alcohol-related illness for infants born to mothers who drink during pregnancy is

Answers

The answer is fetal alcohol syndrome. It is a condition that an infant could experience when the mother who is pregnant is ingesting alcohol during her pregnancy. It could cause defects and disorder to the infant that it will make the infant to be born in a normal way. This could be classified as to mild or severe depending on the situation.

Upon assessment of a patient with myasthenia gravis, the nurse observes drooping of the upper eyelids. what is this finding is known as?

Answers

The finding is ptosis. Ptosis is an abnormal finding because it is usually observed with drooping of upper lids. The inward turning of the lower lid is called as entropion while the outward turning of the lower lid is termed ectropion. The constriction of the pupil is called miosis that is often caused by medications.

Explain how poaching can contribute to the over utilisation of a species

Answers

Poaching refers to the illegal taking of wildlife, in violations of laws that regulate wildlife hunting. Examples of poaching includes; killing an animal out of season, hunting without appropriate licensing, using prohibited weapons to hunt animals, etc. 
Over utilization of a specie refers to the near-extinction or extinction of a particular species as a result of incessant killing. Poaching can lead to a situation where a particular animal specie will be completely wipe out as a result of excessive, inconsiderate killing. The extinction of a particular animal specie may have negative effects on the local environment. 

When a child is born with a chromosomal mutation, when did the mutation occur?

Answers

The mutation occurs during meiosis that produces sperm cell and egg cell or possibly both. The chromosomal mutation when a child is born it involves the long segments of DNA that can cause not likely good to the child it may be a deletion, insertion, and inversion of the DNA.

Apex answer is During Meiosis

Reflexes that activate muscles on the opposite side of the body as the stimulus are called

Answers

The answer is contralateral. It means that the reflex happens on the contradictory side of the body from the stimulus. To produce this reflex, divisions of the afferent nerve fibers cross from the stimulated side of the body to the contralateral side of the spinal cord. There, they synapse with interneurons, which, in turn, excite or prevent alpha motor neurons to the muscles of the contralateral limb.

A client is receiving total parenteral nutrition (tpn) through a central venous access device. the nurse discovers that the tpn bag is empty and the next bag has not been received yet from the pharmacy. what is the most appropriate action for the nurse to take?

Answers

When the nurse notices the TPN bag is empty and the bag needs to be changed, she needs to call the pharmacy right away. While waiting for the pharmacy or her supervisor to deliver a new bag, she will hang a different solution that will work until until the new bag is delivered. She will use a bag of 10% dextrose in water. This can be used as a temporary solution.

Answer:Miguel is a Mexican citizen and Javier is a Cuban citizen. Both Mexico and Cuba are holding elections soon. How will Miguel's experience be different from Javier's?

Explanation:

A patient undergoing chemotherapy for lymphoma (cancer) was advised to get rid of the house plants in her home. what is the possible reasoning behind this suggestion?

Answers

Chemotherapy patients are advised against gardening, planting or any form of contact with soil.  The soil in the pots is a huge source of bacteria and mold, which presents an unnecessary danger to the patient. Removing indoor houseplants and flowers are also advised because these items tend to shed mold in the air and can be a source of infection. It is also important to not keep cut flowers inside the house because the water in the vases can harbor infectious bacteria and can evaporate in the air and spread to the patient.

The initial organisms on earth were essentially prokaryotic heterotrophs. how did they obtain their energy?

Answers

The initial organisms on earth were essentially prokaryotic heterotrophs. They obtained their energies through organic molecules' breakdown.

The translation of protein in these creatures could start while the process of transcription is still happening.

These creatures invested no energy in the off springs. They reproduced really fast.

An injection of a concentrated salt solution into the circulatory system would result in __________.

Answers

An injection of a concentrated salt solution into the circulatory system would result in crenation of the red blood cells.
Crenation is a feature of red blood cells. A normal human red blood cells are round, with an indented center, crenation of red blood cells happens as the result of the process of Osmosis. After that the shape of red blood cells shrink, have notched appearance.

Because minerals and vitamins have no energy value, they can be disregarded when calculating a day's total energy intake.

Answers

The statement above is TRUE.
They can be disregarded because they do not have energy value that they can contribute to the summation of the total daily intake. But this does not mean that they will not be taken in the diet.
 Although minerals and vitamins have no energy value, they are very important parts of balanced diet and a diet which lack these components can not be properly handle by the body, this is because, most times, these components are needed in the body for maximum utilization of the energy foods.

Human blood type AB is an example of which pattern of inheritance?

incomplete dominance

dominant/recessive

heterozygous

codominance

Answers

 The correct answer would be Dominant/Recessive.

Blood type AB exemplifies codominance, where both IA and IB alleles are equally expressed. The ABO system is also a case of multiple alleles inheritance, with three alleles involved. This differs from incomplete dominance, which is not exhibited in blood type AB.

Human blood type AB is an example of codominance. In the ABO blood group system, alleles IA (encoding antigen A) and IB (encoding antigen B) are both expressed equally in the phenotype of the heterozygote, resulting in blood type AB which displays both A and B antigens on the surface of red blood cells. This is different from incomplete dominance, where the phenotype is a blend between the two alleles. Additionally, the ABO blood types are an example of a multiple alleles inheritance pattern since there are three alleles involved (IA, IB, and i), which increases the possible blood types.

The ABO blood group antigens are an example of the complexity of genetic inheritance, showing both codominance and a multiple allele system, but not incomplete dominance. It is important to understand these concepts in genetics to grasp how different traits are passed from parents to offspring.

A client who just returned from a cardiac catheterization reports to the nurse that the pressure bandage on the right groin is tight. what action should the nurse take?

Answers

The nurse should assess the pulses that are distal to the dressing. This is necessary in order to assess the regularity, strength and rate of the pulses. A strong pulse reflects a good perfusion status. If the pulse is weak, that means that circulation is been hindered.

Goldenrod gall flies lay their eggs in the goldenrod plant. the fly larvae cause the plant to form a gall, a swollen growth of plant tissue. large galls tend to be pecked open and their larvae eaten by birds. small galls are more frequently parasitized by tiny wasps, whose larvae eat the fly larva and take over the gall. this complex situation implies that __________ is acting on gall size.

Answers

Goldenrod gall flies are also known as goldenrod ball gall maker, these flies live their entire life on goldenrod plants. It is a species of fly native to North America.

Goldenrod gall flies lay their eggs in the goldenrod plant. The fly larvae cause the plant to form a gall, a swollen growth of plant tissue. Large galls tend to be pecked open and their larvae eaten by birds. Small galls are more frequently parasitized by tiny wasps, whose larvae eat the fly larva and take over the gall. This complex situation implies that Stabilizing selection causes no change in the average of the population; extremes (large and small galls) become less common is acting on gall size.

A client states that she wishes to use the calendar method of birth control. the nurse concludes that the client understands how to calculate the beginning of the fertile period when she states, "i will:

Answers

The correct answer is "I will subtract 18 days from the length of my shortest cycle."
If you want to calculate when your fertile period will begin, the best way to do that is just to subtract 18 days from the length of your shortest cycle. If you subtract 11 days from your longest cycle, you will get the last day, and not the first one. 

What was Mendel trying to determine?

Answers

Mendel tried to determine the 10 Laws of Conservation

Caladium (elephant ears) plants, if eaten, inhibit salivary amylase because they produce a chemical that binds to the active site of amylase. this is an example of

Answers

The inhibition of enzymes can occur in three ways: competitive, noncompetitive and substrate inhibition. The enzyme here is the amylase. The substrate could be the chemical and the nutrients that could be broken down from the plants. In this case, the chemical is a competitive inhibitor, since it 'overtakes' the nutrients in the active site of the enzyme. Then, the enzyme could not do its job of digesting the plant.

If a patient's mechanical ventilator malfunctions, you should remove the patient from the ventilator and:

Answers

When a patient's mechanical ventilator malfunctions, you should take out the patient from the ventilator and “begin ventilations with a bag-mask device”. If ever a mechanical ventilator malfunctions, you should start ventilations with a bag-mask device or also known as bag-valve masks. While, you are ventilating a patient, ask help from others to seek medical control, to control the situation properly.

 

why can a wolf be considered both secondary consumer and tertiary consumer

Answers

A wolf can be considered as both a secondary and primary consumer because they feed on both primary and primary and secondary consumers. As a secondary consumer, wolves can feed on plant eaters [primary consumers] such as elk which is an herbivore. As a tertiary consumer, wolf feed on secondary consumers such as deer. 

The study of the properties of matter and how matter changes is called

Answers

Chemistry is the study of properties of matter and how matter changes .
Final answer:

Chemistry is the study of the properties of matter and how matter changes. This study includes the concepts of chemical changes, which refers to the transformation of one kind of matter into another, and chemical properties, which describe the behavior of matter in relation to changes it undergoes when it transforms.

Explanation:

The study of the properties of matter and how matter changes is referred to as Chemistry. Chemistry is a physical science that deals with the structure, composition, properties, and reactions of matter. Furthermore, it also encompasses the concepts of chemical changes and chemical properties. A chemical change refers to a process that changes one kind of matter into another kind, producing a different kind of matter from the original. Chemical properties, on the other hand, describe the behavior of matter related to changes it undergoes when it transforms to another kind of matter.

For instance, if you heat sugar, it undergoes a chemical change and transforms into caramel. The change in taste, color, and other properties from sugar to caramel is part of the chemical properties involved in the chemical change.

Learn more about Chemistry here:

https://brainly.com/question/13428382

#SPJ5

Name the surfaces of the body where friction or papillary ridges are found.

Answers

Papillary ridges or friction ridges are the arcs, whirls and loops found on the outer dermis of the skin. In lay man's term, these are your fingerprints. Papillary ridges in the body are found in your palms, fingertips, soles of your feet and your toes, as well.

The method for determining exercise intensity by estimating it without measuring it is called

Answers

The method for determining exercise intensity by estimating it without measuring it is called rating of perceived exertion(RPE). In this method, you will estimate a number from a scale of 6(no exertion) until up to 20 (maximal exertion).

You can also try talk test but it more qualitative. In this method, if you can sing that means the exercise is light, talking is medium, if it just word is high intensity.

Glycoproteins on the cell membrane would prevent someone with type a blood from accepting type b blood.
a. True
b. False

Answers

I believe the statement is true. Glycoproteins on the cell membrane would prevent someone with type A blood from accepting type B blood. Glycoproteins are type of proteins that has an  oligosaccharide chain or glycol that is covalently bonded to a polypeptide side-chain. This molecule is involved in almost all of the processes in a cell. It functions in the reproductive system, immune system, protection of the body and communication of the cells. It is also important for the red blood cells. Our blood types are named according to the type of glycoprotein that is present in our red blood cells. With this, it helps the body identify that your blood cells are yours and are not foreign cells.

Mesenchymal cells are most commonly found in ________ connective tissue.

Answers

We have that the  Mesenchymal cells are most commonly found in ____Embryonic connective tissue.____ connective tissue.

Embryonic connective tissue.

Mesenchymal cells

Generally,  these are cells from sources like the bone marrow and amniotic fluid, in adult stem cells that can differentiate into other types of cells.

Hence, The reply to this query is what we known as the Embryonic connective tissue.

For more information on Cell visit

https://brainly.com/question/2622341

Final answer:

Mesenchymal cells are most commonly found in embryonic connective tissue. They are multipotent stem cells that can differentiate into any type of connective tissue cells. These cells play a vital role in the formation of diverse body tissues, such as bones, cartilage, and fibrous connective tissues.

Explanation:

Mesenchymal cells, a type of multipotent adult stem cell, are most commonly found in embryonic connective tissue. These cells can differentiate into any kind of connective tissue cells required to restore and heal damaged tissue. They originate from the mesenchymal stem cell line, the first connective tissue to develop in the embryo. Clusters of these cells are scattered throughout adult tissues.

Moreover, mesenchymal cells contribute to the formation of diverse types of connective tissues. They originate withinside the mesodermal germ layer and differentiate from mesenchyme and hematopoietic tissue in the bone marrow. They are involved in the formation of bones, cartilage, and fibrous connective tissues, playing a vital role in bodily growth and development.

Learn more about Mesenchymal cells here:

https://brainly.com/question/35878287

#SPJ11

A more or less circular ring of mushrooms appears in your yard, apparently overnight. the circle is several yards in diameter. the most likely explanation for this circle of mushrooms is that:

Answers

The mushrooms are actually all part of the same organism. They have mycelium, which is the vegetative part of the fungus consisting of branching hyphae, connected to and radiating from a single germinated spore.

F a finch population with heritable, variable beak size and shape arrived on an island on which only large seeds were available as a source of food, describe the natural selection process that would follow.

Answers

the populations of finches with the larger beaks would thrive and therefore be naturally selected for

What body cavity contains the organs of the reproductive and excretory systems?

Answers

The answer is Pelvic cavity.

When an olfactory receptor is stimulated, what type of change must happen before it signals the brain that a change has occurred?

Answers

When an olfactory receptor is stimulated, a generator potential must be produced by the receptor before it signals the brain that a change has occurred.

In order to reach the threshold of the cell, a graded potential must be generated by the neuron of  the olfactory receptor. At threshold, an action potential will be generated, referred to as the generator potential. The brain then receives this generator potential in order to decode it.
Other Questions
Which operant conditioning process must researchers use to encourage closer and closer approximations of a target behavior? A. stimulus generalization B. acquisition C. extinction D. shaping Omaha steaks sending e-mail coupons for items that customers have purchased previously and mailing slick pictures of gourmet steaks and meal packages to addresses that have received orders in the past is an example of ___________ is the branch of biology that names and classifies species. When you buy an operating system for your personal computer, you are actually buying a software? Which food is at a temperature that allows bacteria to grow fastest servsafe? From September 1981 to September 1984 the enrollment at a particular school declined to 11%. If the number of students enrolled at that school in September 1984 was 712 what was the enrollment in September 1981?a) 78 b) 634 c) 701 d) 790 e)800 What rhetorical device is seen in the following quote from the new testament? We look for light, but all is darkness. rhetorical questions repetition parallelism antithesis PLEASE HELP ASAP!! THIS IS DUE TOMORROW AND WORTH 5 GRADES!! I WILL MARK AS BRAINLIEST IF ANSWERED NOW!! I JUST NEED HELP IDENTIFYING THE FIGURATIVE LANGUAGE!! The poem must rhyme, include repetition, a simile, metaphor, personification, and alliteration. Please identify the figurative language used by indicating the type (M for Metaphor, S for simile, etc.).My work: My family and I live in Chicago My family is poor and leaves me to work all dayWe live in an apartment that is way too small for usThere is barely any room to sleepMy only friend is the couch and it has no smileBecause it is worn and faded, it has been here a while Being at home is boring so I decide to take a walkThis gets me thinking and I begin to talk Living in this poor neighborhood is like watching paint dryEverything we own it either smells or looks as if it is going to dieJust like rotten foodI just want to move into a shiny new neighborhoodYet like so many before it broke us tooStill with no financial security we make the moveWe have to find a way to push throughIn order to make a countermoveEvery warning heard was tossed awayFor now all we want to do is stay We stick out as though we're in a spotlightBut we aren't going anywhere without a fightWe are trying to find a home for all of us to liveBut the prices are too high So together we have to thriveOnwards upwards we strive Read the sentence.After dinner, we played a trivia game.How is the word in bold being used?a) subordinating conjunctionb) prepositionc) adverb Find the measure of the angle and please explain step by step Which action does not illustrate a stereotype? offering a child a piece of candy asking your neighbors to turn down their music asking a tall man if he plays basketball asking a gas station attendant for directions? Describe why abstinence is the best choice. Be as detailed as possible Which of the following best describes computer modeling in biology?a.A computer is used to create a spreadsheet showing the relationship of the algae population in a lake to the nitrate pollutionb.A computer is used to simulate the growth of algae in a lake due to increasing nitrate pollution.c.A computer is used to calculate a scale of a lakes turbidity due to algal growth from too much nitrate pollution in the water.d.A computer is used to store data and create a database of the changing algae populations in a lake due to nitrate pollution. parallel lines r and s are cut by two transversals, parallel lines t and u Explain why the extrapolated temperature is used to determine the maximun temperature of the mixture rather than the highest recorded temperature Is the statement true or false? Since almost anyone can create a website, the information you find on web pages is not always reliable. A. true B. false there were 94,172 people at a football game on saturday . on monday 1,000 fewer people were at a football game . in word form , how many people were at the football game on monday? How does Mathilde feel about her middle class life in The Diamond Necklace?She accepts it with a sense of satisfaction.She feels that if she just works harder she could achieve the next classShe is deeply disappointedShe is quite content to have the money she has Question part points submissions used use a power series to approximate the definite integral, i, to six decimal places. 0.3 ln(1 + x4) dx 0 Nitrogen has an electronegativity of 3.0, and hydrogen has an electronegativity of 2.1. which describes the bond between nitrogen and hydrogen? Steam Workshop Downloader