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Which of these could influence a persons biological sex? A. Media exposure B. Blood type C. Society and culture D. Chromosomes Choose one



Which of these could influence a persons biological sex? A. Media exposure B. Blood type C. Society and culture D. Chromosomes Choose one

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Which biological macromolecule is made up of monomers like the one shown below? Carbohydrate Nucleus acid Fat Protein


Answered by answersmine AT 22/10/2019 – 03:47 AM

Proteins are made up of animo acids. Fat is made up of glycogen and fatty acids. Carbodydrates are are up carbon, hydrogen, and oxygen. As well as being made up of saccharides. Nucleic acid is made of adenine, cytosine, thymine, and Guanine. Idk if this helps

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What is a biological control for pest management? a. some members of the pest population are sterilized b. sexual attractants lure pest species to traps c. predators, parasites, or disease organisms are released to reduce pest populations d. harvested foods are exposed to ionizing radiation e. genetic engineering develops pest-resistant crops?



What is a biological control for pest management? a. some members of the pest population are sterilized b. sexual attractants lure pest species to traps c. predators, parasites, or disease organisms are released to reduce pest populations d. harvested foods are exposed to ionizing radiation e. genetic engineering develops pest-resistant crops?

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What is the most widely accepted biological definition for a species? a group of closely related organisms with the capacity to interbreed and produce fertile offspring a group of organisms that cannot interbreed or produce fertile offspring a group of related organisms that can interbreed a group of unrelated organisms that can interbreed


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The continuous development approach views development as a ________. biological imperative cumulative process series of accidents unique progress



The continuous development approach views development as a ________. biological imperative cumulative process series of accidents unique progress

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At any level of organization, groups that have biological meaning are referred to as A. systems. B. cladograms. C. taxa. D. binomials.


There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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Identify the type of behavior exhibited in the examples described below. Support each answer with a short explanation. Cuckoos often lay their eggs in the nests of other birds, which raise the young cuckoo as their own. However, as the cuckoo matures, it takes on the behavioral characteristics of its biological parents rather than its surrogate parents.


When red crosses with white flowers to give pink flowers, we are looking at incomplete dominance, i.e. the offspring is a blend (pink) of the parents’ characteristics (red or white).

Since we’re given in the question two pink flowers crossed to give 25% red, 25% whit and 50% pink, we would be thinking of a punnett square between RW and RW, to give

RR RW

RW WW

Since both parents are RW, that makes both parents heterozygous.

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Explain why biological macromolecules are important for everyday life



Explain why biological macromolecules are important for everyday life

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In a biological reaction involving an enzyme, what does not directly participate in the reaction? the active site of an enzyme the active site of the substrate the inactive site of an enzyme the reactant chemicals



In a biological reaction involving an enzyme, what does not directly participate in the reaction? the active site of an enzyme the active site of the substrate the inactive site of an enzyme the reactant chemicals

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The field of ________ is concerned with maintaining biological diversity.


Answer:

Helicases unwind the two parental DNA’s strands and creates the replication fork; single strand binding proteins keep the single strand from joining.


Further information:

• DNA replication: a biological method occurring in all living organisms that is the basis for biological inheritance

Helicase: It is an enzyme that may unwinds the DNA helix ahead of the replication machinery.

Origin of replication: a specific sequence in a genome at which replication is started.


Steps of DNA replication:

• During initiation, proteins fix to the source of replication while helicase unwinds the DNA helix and two replication forks are formed at the source of replication.

• During elongation, a primer sequence is added with complementary RNA nucleotides, which are then substituted by DNA nucleotides.

• During elongation the leading strand is made constantly, while the lagging strand is made in portions called Okazaki fragments.

• During termination, primers are detached and substituted with new DNA nucleotides and the backbone is stuck down by DNA ligase.

Purpose of DNA replication:

The purpose of DNA replication is to produce two duplicate copies of a DNA molecule. This is essential for cell division during development or repair of damaged tissues. DNA replication ensures that each new cell receives its own replica of the DNA.

Answer details:

Subject: Biology

Level: High school

Keywords:

• DNA replication

• Helicase

• Origin of replication

• Steps of DNA replication

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The belief that sexual orientation is a function of hormones and other physiological processes is associated with which theory? A humanistic B Social learning C biological D androgyny


There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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Sand is supplied to the California coastal region primarily by: • (a)Coastal erosion • • (b)Local biological activity • • (c)Rivers that flow from the Sierra-Nevada mountains •(d)Ocean floor upwelling


Natural Forces Affecting the Driver:

1. While the car stops, the person continues moving the way that the car were moving and then hits the obstacle in the car or the person can be thrown out of the vehicle. If the person wears belt, he will stop moving with the vehicle and won’t hit the obstacle.

2. We count approximate kinetic energy using the formula K = v^2. So the vehicle which is moving at 30 mph will have four times less kinetic energy than vehicle which is moving at 60 mph. If they have the same road conditions, the breaking distance will be four times as great for the car moving twice as fast.

3. Kinetic energy depends on object’s mass and velocity and it has direct relationship with the stopping distance. The lesser mass of the vehicle = the lesser kinetic energy and lesser stopping distance. => If both vehicles have the same velocity, then small vehicle has lesser kinetic energy than large vehicle.

4. We know that kinetic energy has this relationship with velocity K = v^2. So the best way to prepare to enter sharp curves in the roadway is to lower the speed. The most appropriate speed is 20-30 mph, but it depends on road conditions and car’s breaks condition.

5. Car crashes can happen with everyone so the best way is to be prepared. First the driver should wear a seatbelt while he’s driving. He should check his tires and breaks condition regularly. And also it’s important to slow down the vehicle while entering sharp curves. Without following these rules, the driver can get catastrophic injuries in a car crash.

Signs, Signals, and Pavement Markings: 

1. It doesn’t matter where you go. All you need is to learn highway code. It’s very different to know the meanings of every road sign. Also, it’s necessary to check your car’s conditions and you should take some spare parts for your car in case of accidents. So wherever you go, it’s important to be prepared.

2. You should stop before crossing and take few minutes to make sure there is no train approaching. If there is no train approaching, you can pass a railroad crossing. If you see approaching train, you should wait until it will pass a railroad crossing.

3. You should stop before the lights and wait to check the traffic movement and signs. Make sure that everything is safe and pass the intersection. Don’t move fast to avoid accidents.

4. Flashing yellow light means that it’s not necessary to stop but you should to pay attention on the traffic movement. So it would be better to yield before the lights and make sure if it’s safe to move. After that you can cross the intersection.

5. The line change means that the lane changes and you can’t cross solid lines. Pay more attention on road marking because it shows how you should behave on the road or highway.

6. As you approach the next exit and  your passengers need to use the restroom and get some food, you should look for green signs which indicate food and rest stops. You should to slow down if you don’t want to skip the sign.

7. When you take the exit ramp off the expressway and merge onto the next road, you see yellow lines dividing the roadway which indicates that there is oncoming traffic and this is a two-way highway. 

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__________ who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code. A. Male siblings B. Adopted siblings C. Identical twins D. Fraternal twins Please select the best answer from the choices provided A B C D Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in __________ in small group settings. A. consensus democracy B. obedience and punishment C. law and order D. ethical behaviors Please select the best answer from the choices provided A B C D Which of the following is a method of scaffolding? A. explaining the correct way of doing something without errors B. correcting the mistakes of a learner without explaining why C. telling a learner that they have made a mistake D. showing a learner how to correct common mistakes Please select the best answer from the choices provided A B C D


1. The answer is “C”.

“Identical twins” who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code.

Identical twins originate from a single fertilized egg that parts into two. Before it parts, it is either male or female. After it parts, there are either two guys or two females. The two sections of the fertilized egg embed in the uterus and every create one of the twins.  

Identical twins have the equivalent hereditary source. No immediate reason for monozygotic twinning has been resolved; it isn’t innate. Monozygotic twins speak to around 33% all things considered. They may look strikingly comparative, and it might be hard to reveal to them separated.

2. The answer is “A”.

Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in “consensus democracy” in small group settings.

Lawrence Kohlberg felt that the best way to support development through these stages was by discourse of good problems and by investment in consensus democracy inside small groups. Consensus democracy was rule by understanding of the gathering, not larger part rule. This would invigorate and widen the reasoning of youngsters and grown-ups, enabling them to advance starting with one phase then onto the next.

3. The answer is “D.  showing a learner how to correct common mistakes”.

The term scaffolding alludes to a procedure in which instructors display or exhibit how to take care of an issue, and afterward venture back, offering support as required. Analyst and instructional architect Jerome Bruner first utilized the term ‘scaffolding’ in this setting, harking back to the 1960s. The hypothesis is that when understudies are given the help they require while discovering some new information, they stand a superior possibility of utilizing that learning freely. Bruner suggests positive association and three methods of portrayal amid educating: activities, pictures, and dialect.  

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Your gender identity includes your __________. (Select all that apply.) Physical makeup nervous system physiological profile biological attributes


Answer:

D. Magnetic and electrical forces are similar because they are both related to the interactions between charged particles.

Explanation:

When charge particles are placed near to each other then the two charges will attract or repel each other by electrostatic force given by

F = frac{kq_1q_2}{r^2}

while if charge particles are moving with respect to each other then in that case the magnetic field produces by the two moving charges will exert force on the two charges.

This magnetic force on moving charge is given as

F = qvB

now here we can say that both electrostatic force and magnetic force are related to charge particles so these two forces are similar to each other

so correct answer will be

D. Magnetic and electrical forces are similar because they are both related to the interactions between charged particles.

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Fruit flies all look more or less alike to most people. if you collect a male and female fruit fly, how could you test the hypothesis that they are the same biological species


The blood type is B+. The blood type depends on some protein substances called antigens present on the cell membrane of the red blood cells that help the cells to identify and communicate with each other. There are four types of blood types;
1- Blood type A which have antigens A on the red blood cells.
2- Blood type B which have antigens B on the red blood cells.
3- Blood type AB which has antigens A and B on the red blood cells.
4- Blood type O which have no antigens on the red blood cells.
There is a second type of antigens present on the red blood cells which is called rhesus. Rhesus may be present, so the individual will be positive (+) rhesus), or it may be absent, so the individual will be negative (-) rhesus.
To determine the blood type, we add anti-a and anti-b serums to two samples of the tested blood.
If the anti-a coagulates only, the person is blood type A.
If the anti-b coagulates only, the person is blood type B.
If the two samples coagulate, the person is blood type AB.
If the two samples don’t coagulate, the person is blood type O.
To another blood sample from the same blood, we add anti rhesus, if it coagulates, the person is )+), if not the person is (-). 

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For many years, researchers struggled to find a biological explanation for sexual orientation. however the vast majority of studies have focused on gay men and excluded lesbians, which might lead sociologists to question the ____________ of such research. commercial uses


Answer:

Two of the main criticisms towards the theory of sustainability are: 1. That humans tend to deplete the land of resources without a care for what the future will bring, and 2. That Earth´s resources do not have a limitation in the face of human activities, resources will not, and do not, become scarce, and that the definition of what a resource really is changes continually.

Explanation:

Sustainability is the belief that humanity has to consider Earth´s renewable and non-renewable resources to order its society, its economic activities and the use of the environment for the present and future generations. It is based on those three precise pillars: the environment, society and the economy, and it seeks to organize, and control, human activity on the environment, so that resources may be wisely used and thus become available for future generations. However, despite the wide acceptance of this theory, there are also criticism to it. One is the view of humans almost like viruses that just move, deplete, and then move again, and the second, the disbelief that resources can be finished on Earth, and truly defining what a resource is, and whether it is renewable, or non-renewable.

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Suppose two people are exposed to equal doses of radiation (equal number of rads) inside their bodies. Suppose that the first person is exposed to alpha radiation, while the second person is exposed to protons. How many times worse is the biological risk for the first person than the second as a result of radiation weighting?


The answer seems indeed to be letter D) War and violence leave a lasting impact on people, especially on soldiers.

Ambush, by Tim O’Brien, narrates his own participation as a soldier in the Vietnam War. His memory of killing a young enemy soldier still haunts him, some days more, some days less. There are days when he doesn’t feel, doesn’t remember anything. But, from time to time, the image of the young soldier reappears, out of a fog, and then vanishes.

Facing it, by Yusef Komunyakaa, is a poem in which the author narrates the impact of the Vietnam War over himself and others after visiting a Memorial. The names, the losses, the pain, all touch him deeply, as the veteran who has lost an arm is also forever touched by the conflict. As the speakers says,

“I said I wouldn’t  

dammit: No tears.    

I’m stone. I’m flesh.”

He can’t help it but to be emotional.

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Four boy have the same biological mother and father what percentage of each boys chromosomes come from the mother


Answer:

All offsprings which have “hh” genotypes will not have hair on the back of his or her hand

Explanation:

Having hair on the back of the hand is a dominant trait in humans , represented by “H”

Not having hair on the back of the hand is a recessive trait in humans , represented by “h”

When a dominant and recessive trait occur together, only the trait associated with the dominant allele is expressed.

Now  a cross is being carried between two parents having following genotype

Father – “hh”

Mother – “Hh”

The following offsprings are produced as per the punnet square given below –

h h

H Hh Hh

h hh hh

A recessive trait is expressed when both the cell has both the recessive traits.

Thus, all offsprings which have “hh” genotypes will not have hair on the back of his or her hand

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While looking at a cell under a microscope, a scientist is able to see a biological molecule. This molecule is a nucleic acid with double strands and contains the nitrogenous bases adenine, thymine, cytosine, and guanine. Based on this information, what conclusion can the scientist draw regarding this nucleic acid



While looking at a cell under a microscope, a scientist is able to see a biological molecule. This molecule is a nucleic acid with double strands and contains the nitrogenous bases adenine, thymine, cytosine, and guanine. Based on this information, what conclusion can the scientist draw regarding this nucleic acid

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In a biological reaction involving and enzyme the substrate binds to A. The active site of an enzyme B. the active of another substrate C. The inactive site of an enzyme D. The inactive site of another substrate


Answer : The enthalpy change of the reaction is, -470.2 KJ/mole

Solution :

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

The balanced chemical reaction are,

(1) C_2H_2+H_2rightarrow C_2H_6 Delta H_1=-94.5KJ/mole

(2) H_2Orightarrow H_2+frac{1}{2}O_2    Delta H_2=71.2KJ/mole

(3) C_2H_6+frac{7}{2}O_2rightarrow 2CO_2+3H_2O    Delta H_3=-283KJ/mole

The balanced main chemical reaction will be,

4CO_2(g)+2H_2O(g)rightarrow 2C_2H_2(g)_5O_2(g) Delta H=?

First reverse the reaction 3 then adding the twice of reaction 3, twice of reaction 1 and then subtracting four times of reaction 2 from the addition of two reaction 3 and 1, we get the enthalpy change of the reaction.

The expression for enthalpy change of the reaction is,

Delta H_{formation}=[2times Delta H_3]+[2times Delta H_1]-[4times Delta H_2]

where,

n = number of moles

Delta H_{formation}=[2times (283)]+[2times (94.5)]-[4times (71.2)]=470.2KJ/mole

Therefore, the enthalpy change of the reaction is, -470.2 KJ/mole

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Deep-ocean lantern fish have special organs that use chemical energy to produce light. However, the light can only travel a certain distance through the water before it is no longer visible. How does this phenomenon validate the Law of Conservation of Energy? The fish is a closed system, so energy is allowed to exit the system. The Law of Conservation of Energy applies to biological, not physical, systems. The light energy travels through the water until it is reflected or absorbed. The light is not carried by matter and contains no energy.

The right answer is C, The water solution in the environment surrounding the cell has a higher solute concentration than the cell.

Plasmolysis (the phenomena of shriveling cell) is a cellular state of the plant cell where, following loss of water, the membrane is detached from the pectocellulose wall. This is the opposite state of turgescence.

Plasmolysis occurs when a stream of water comes out of the vacuole and the plant cell through osmosis. The resulting decrease in pressure causes shrivelling of the soft parts of the plant (stems, leaves, petals), which are no longer supported by the turgor pressure.

This flow of water is created either by the lack of water in the external environment, or by the presence in this medium of a liquid more concentrated than the cellular medium. In these situations, there is a displacement of water by osmosis from the cell medium to the external medium.

Thus, the cells of a plant subjected to a drought or a water too concentrated in salts will lose their water and will be in plasmolysis. The soft parts will then shrivel up and the plant will die of water stress if the situation does not allow it to quickly reabsorb water.

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Integrated pest management is defined by the Environmental Protection Agency as, “the coordinated use of pest and environmental information along with available pest control methods, including cultural, biological, genetic and chemical methods, to prevent unacceptable levels of pest damage by the most economical means, and with the least possible hazard to people, property, and the environment.” Which of the following risks does integrated pest management try to minimize? damage of a food web due to the overuse of pesticides ground water pollution, due to the illegal dumping of toxic chemicals deforestation, due to acid rain global warming, or due to an increased use of fossil fuels


Abiotic factors
Abiotic factors are the physical and chemical conditions of an environment. For example : heat, salinity, pressure, light, wind, pH …

Biotic factors
Biotic factors are all the biological conditions of an environment for a specie/taxa. It can include prey and predator abundance, available food amount, available space, intra and interspecific competition…

The development of organims is under the control of abiotic factors. Some are adapted to heat, cold etc … The abiotic factors will define which organisms are able or not to live in a specified place.

The living organisms will constitute the biotic factors, which define if and how can an organism live in a specified environment.