some leaves modify into spines, how does this modification help plants survive?

Answers

Answer 1
Spines primarily have a protective function in plants. The spines can be sharp, and form a physical barrier against herbivores which may want to feed on the plant. Spines however also have other benefits. The spines on a jumping cactus allow segments of the cactus to stick to passing large animals or humans, thereby allowing the cactus to spread to other areas through asexual propagation. Spines are modified leaves, and spines have a much lower surface area than leaves, and therefore can reduce transpirative loss of water by the plant during harsh droughts. Some trees in alpine regions, such as pine trees, have developed spine-like leaves to prevent the accumulation of snow in the branches.  

Related Questions

The thermosphere protects the Earth from UV radiation coming from the Sun. Please select the best answer from the choices provided T F

Answers

False, the ozone layer protects Earth from UV radiation.

Answer: False

Explanation:

The stratosphere is the layer of the atmosphere which shields the earth from the harmful incident rays like infrared and ultraviolet radiations. It consist of ozone layer near the altitude of 25 kilometers. The ozone molecules present in the stratosphere absorb the high energy UV rays which are capable of warming the inner atmospheric layers of the earth, may cause damage to the genetic material of the organisms and skin problems in humans.

On the basis of the above explanation, statement The thermosphere protects the Earth from UV radiation coming from the Sun is false.  

Explain how the mucoliary elevator helps prevent foreign material from getting into the lungs

Answers

The cilia and mucus in your nose to trap unwanted particles that you breathe in to keep them out of your lungs

When cells are metabolically active but not dividing, they are in the ________ phase. when cells are metabolically active but not dividing, they are in the ________ phase. log exponential lag stationary death?

Answers

The answer is lag. The number of bacterial cells doubles at a constant, exponential rate during log phase, while growth rate and death rate are the same during stationary phase. The fourth phase is the death phase, when the rate of cell death is faster than the population growth. 
When cells are metabolically active but not dividing, they are in the lag phase. Lag phase is among the four phases. others being log phase or exponential phase, stationary phase and the death phase, of bacterial growth. During the lag phase there is very little to no bacterial growth, log phase or the exponential phase; the number of cells doubles at a constant rate, stationary phase; the population growth levels off as the rate of cell death equals the rate of cell division, and finally the death phase where the process of cell death is greater than the process of cell division.

Discuss one theory that has been proposed about the formation of the universe. Provide at least on piece of evidence to support this theory. The theory I chose was The Theory of Evolution.
Teacher comments: Your answer needs to focus on the formation of the universe, not biology.,

Answers

The theory that has been proposed about the formation of the universe is the big bang theory. It is the idea that this whole universe was once a single very dense point that exploded to form everything in the universe. The theory of evolution is something else, it is about the origins of humans and how the human specie evolved on earth over millions of years based on the belief that the starting point were monkeys.

What are the roles of mucus? Check all that apply.

A)to trap pathogens
B)to start fevers
C)to prevent pathogens from moving into deep tissues
D)to stimulate B-cells to make antibodies
E)to identify antigens

Answers

Answer:

A, C

Explanation:

mucus acts as a barrier! all of the other things mentioned (D and E) are caused by white blood cells.

The role of mucus is to trap pathogens and to prevent pathogens from moving into deep tissues. So, the correct options are A and C.

What is Mucus?

When we're sick or feel like we have too much mucus, also known as snot, it might be bothersome, but the body needs it to keep healthy. Our lungs, throat, mouth, nose, and sinuses are lined with mucus, which is a sticky, gelatinous substance.

Its primary purpose is to trap germs, viruses, or allergens such dust or pollen in your nose and stop them from spreading throughout your body and making you sick. It is produced via membranes inside the nose and sinuses. The mucus will eventually move to the stomachs and leave the body, along with the chemicals it has caught. The role of mucus is to trap pathogens and to prevent pathogens from moving into deep tissues.

Therefore, the correct options are A and C.

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What are the job prospects for students with either a bachelor’s degree, master’s degree, or a doctoral degree in psychology? (

Answers

Final answer:

Psychology graduates can pursue a wide range of careers based on their highest degree attained. Bachelor's graduates often work in human resources or education, master's graduates can become therapists and school psychologists, and doctoral graduates can enter academia, research, and clinical practice.

Explanation:

Job Prospects for Psychology Graduates at Different Degree Levels:

The job prospects for students with a degree in psychology vary depending on the level of education attained. Bachelor's degree holders can find careers as case managers, sales representatives, human resource personnel, and high school teachers, contributing to fields such as healthcare where knowledge of psychology is beneficial. With a master's degree, careers expand to include professional counselors, school psychologists, sport psychology consultants, and industrial organizational consultants. Students interested in a career in academia or in becoming practicing clinical psychologists should consider pursuing a doctoral degree, either a PhD for research-focused roles or a PsyD for clinical practice. A PhD opens doors to careers in academia, research, legal consultancy as forensic psychologists, or working in pharmaceutical companies as biopsychologists, among others. Those with a master's qualification can also teach at community colleges, while a doctorate is preferred for tenure-track positions at 4-year institutions.

Postdoctoral training programs are common for recent PhD graduates looking to develop their research skills and prepare for academic or specialized professional careers. Each degree level in psychology also lends itself to different opportunities beyond the traditional paths; for example, psychology undergraduates can leverage their education in becoming psychiatric social workers or nurses.

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Match the correct characteristic with each term

algae [i think B]


spore [i think C]


ciliate [i think D)


protozoan [i think A]


a. multicellular and unicellular photosynthetic protists
b. an animal-like protist
c. a reproductive cell that can produce a new organism without fertilization
d. a protozoan that moves by beating hair like parts that cover its cell

i am not a genius, i am a high school idiot please dont judge me if i am wrong. no one is perfect.

Answers

Ciliate- D
Spore- C
Alge - A
Protozoan- B

Hope this helps!

-Payshence xoxo

A child has been diagnosed with hemophilia type a after experiencing excessive bleeding from a minor trauma. the mother shares that she is 4 weeks pregnant and questions as to whether this pregnancy will result in a child with hemophilia. what is the best response by the nurse?

Answers

The nurse should let the mother know that with every pregnancy, there is actually 50 percent chance of a carrier passing on this condition or being a carrier. The sex of the child will have a great impact on the outcome. It is also important to know that the outcome cannot be affected by the previous pregnancy.
The nurse should let the patient know that with every pregnancy, there is actually 50 percent chance of a carrier passing on under this condition or being a carrier.

But not all pregnancies may result to this. The sex of the child will have a great impact on the outcome and it cannot be as a result of the previous pregnancy.

 Haemophilia is being termed as an inherited genetic disorder. It results from much to people who bleed longer after an injury. There are two types of hemophilia.
 For example, hemophilia A which occurs if there is no enough clot factor VIII. The other one is hemophilia B which occurs if there is no enough clot factor IX.

Identify the region of the humerus that articulates with the ulna. head capitulum medial epicondyle trochlea

Answers

The correct answer is the trochlea. The trochlea is a protuberation on the distal humerous that attaches on the trochlear notch of the ulna. The trochlear notch is formed on the proximal head of the ulna; the attachment of the trochlea of the humerus to the trochlear notch forms a hinge joint.

In an experiment to study the effect of proteases on proteins, what is the MOST LIKELY effect of a major change in pH? A) increased rate of product formation B) a change in the substrate concentration C) the formation of new active sites of the enzyme D) a change in shape of the active sites of the enzyme

Answers

Answer: The correct answer is-

D) a change in shape of the active sites of the enzyme.

Enzymes are primarily protein molecules that drive various chemical reactions ( by increasing the rate of reaction) within the body of living organisms.

Protease is a protein digesting enzyme that works on specific pH ( such as pepsin works on pH 2 within stomach, which is highly acidic) .

Shape of an enzyme determine its function as they have active sites ( which have unique shapes) that fit in the substrate and carry out the chemical reactions.

A major change in pH can alter the shape of the active sites of the enzyme, making it inactive.

Thus, option D) is the right answer.

Final answer:

A major change in pH is most likely to result in a change in shape of the active sites of the enzyme (D), as enzymes have an optimal pH range and changes can affect their tertiary structure and catalytic activity.

Explanation:

In an experiment to study the effect of proteases on proteins, the most likely effect of a major change in pH is a change in shape of the active sites of the enzyme (D). Enzymes, which are proteins, have an optimal pH range in which they operate most effectively. Deviating from this optimal pH range affects the ionization of acidic and basic side groups, particularly those in the active site, altering the enzyme's tertiary structure and consequently its ability to bind to the substrate. This modification in structure can drastically reduce the enzyme's catalytic activity.

Resistance exercises stress what aspect of the body?

Answers

The back part from bending

in the northern hemisphere, a wind blowning from the south to the north will cause a current of water in which direction

Answers

Hello,

Here is your answer:

The proper answer to this question is "east".

Here is how:

When the wind blows from the south to the north the current of water will go to the east because of the direction of the air is blowing.

Your answer is east.

If you need anymore help feel free to ask me!

Hope this helps!

The terminal electron acceptor in aerobic respiration is water, which is broken down to hydrogen and oxygen.
a. True
b. False

Answers

Final answer:

The statement is false; oxygen, not water, is the terminal electron acceptor in aerobic respiration, where it combines with protons and electrons to form water.

Explanation:

The statement that the terminal electron acceptor in aerobic respiration is water, which is broken down to hydrogen and oxygen, is false. In aerobic respiration, the final electron acceptor at the end of the electron transport chain is an oxygen molecule, O₂. When oxygen accepts electrons, it also combines with protons (hydrogen ions, H+) from the surrounding medium to form water (H₂O). This step is vital for the production of ATP, the energy currency of the cell. If oxygen is not available, aerobic respiration cannot occur, and cells may switch to anaerobic processes such as fermentation to regenerate NAD+ from NADH.

Which of the following statements about the nucleus is true?
A. The nucleus stores the coded instructions for making the cell’s proteins.
B. The nucleus usually contains a nucleolus region which is where mitochondria assembly begins.
C. The nucleus is the site of protein assembly.
D. The nucleus is surrounded by cell membrane that lets materials in and out.

Answers

The correct answer is D

Answer:

The correct answer is option A. The nucleus stores the coded instructions for making the cell’s proteins.

Explanation:

Hello!

Let's solve this!

The nucleus is the central part of the cell. It contains all the instructions for the cell to work. It also contains the DNA. Among its functions, is to store the instructions of the cell to be able to produce proteins. It is covered by a nuclear membrane.

After the analysis, we conclude that the correct answer is option A. The nucleus stores the coded instructions for making the cell’s proteins.

VO2max is

A. a test used to help people lose unwanted weight.
B. the highest level of oxygen consumption that can be sustained during exercise.
C. a measurement of how much blood the heart pumps during exercise.
D. not a good test of cardiorespiratory fitness.

Answers

VO2max is the highest level of oxygen consumption that can be sustained during exercise.

The oxygen which is released into the air by a plant originates from: the release from carbohydrate decomposition from co2 gas splitting of water molecules protein synthesis

Answers

The answer is splitting of water molecules. This happens during the light stage of photosynthesis where light energy from the sun is absorbed by chlorophyll is used to split water molecules into hydrogen ions and  oxygen. This process is called photolysis. The hydrogen ions joins the dark stage or the light independent stage, while oxygen gas is either released to the atmosphere or used for cellular respiration. 
Final answer:

The oxygen released into the air by plants originates from photosynthesis, where carbon dioxide and water are converted into glucose and oxygen using light energy.

Explanation:

Photosynthesis is the essential biological process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose and oxygen. Chlorophyll, a green pigment in chloroplasts, captures light energy, and through a series of chemical reactions, carbon dioxide is converted into sugars, releasing oxygen as a byproduct. This process is fundamental to the Earth's ecosystem as it provides energy and oxygen for most life forms.

The oxygen released into the air by a plant originates from the process of photosynthesis. During photosynthesis, plants convert carbon dioxide and water into glucose (sugar) and oxygen using light energy. This oxygen is then released into the atmosphere.

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The tiny plates (holes) of bone material found in spongy bone are called

Answers

The tiny holes/plates found in spongy bone are known as trabeculae.

Permitting the exchange of nutrients and gases between blood and tissue cells is the primary function of _____. question 4 options:

Answers

This describes the function of the capillaries. Capillaries are the smallest of the body's blood vessels. They are one cell thick, and are the sites of the transfer of oxygen and other nutrients from the bloodstream to other tissues in the body. Additionally they collect carbon dioxide, waste materials and fluids for return to the veins. They connect the tiny muscular branches of arteries called arterioles, with tiny veins called venules. 

You are on a call of a minor vehicle accident. your patient is a 22-year-old male who was the driver of a moderate t-bone collision. the patient was not wearing a seat belt and there was spidering of the windshield. the patient complains of neck pain and has a scalp laceration. after performing the primary assessment, you take vital signs and bandage the patient's scalp. when you tell him you need to backboard him, he refuses care and ambulance transport. because the person is alert and oriented to time, place, and person, you have the patient sign the separate patient refusal form provided by your service. how should you document this incident in your ems report?

Answers

one should document everything as to include all patient​ care, all of your exertions to convince the patient to be accompanied in an ambulance, and who are the witnesses in the patient's refusal. A signed waiver could also be of help so that it is a proof that the patient refused the treatment.

Document the EMS incident by recording the primary assessment, vital signs, care given, and the patient's refusal of further care and transport. Include any patient dialogue, level of consciousness, signing of refusal form, personnel details, and the nature and specifics of the incident objectively.

When documenting an incident in your EMS report, where a patient has refused care and ambulance transport, it is important to include a detailed and objective description of the scene and patient's condition. In this case, you would first note the primary assessment indicating the patient's complaints of neck pain and the presence of a scalp laceration. You should document the vital signs taken and that a bandage was applied. If the patient is alert and oriented, and refuses care after being informed of the risks, this should be carefully noted along with the signing of the patient refusal form. All dialogue with the patient, their level of consciousness, and understanding of the refusal of care should be thoroughly recorded. It is also necessary to include names and ID numbers of the EMS personnel present, the nature of the incident, and the time the call was received and attended to. Describe the incident factually, mentioning specifics such as the 'spidering of the windshield', the patient being unbelted during the collision, and any other relevant details. Include any reasons the patient provided for refusing care, ensuring that the report remains objective and professional.


The quality or condition of being intense

Answers

intensity would be the answer

Answer: it is Intensity.

Explanation:

Intensity is the quality or condition of being intensed especially extreme state of of strength,force or energy. It also means severity or magnitude of a something and the effects it has.

The Neanderthal skeleton known as the "old man" showed evidence of many injuries over a long life. Several broken bones had healed, and almost all of his teeth had fallen out. What does this most likely indicate?
A. Neanderthal bones were very delicate and easily broken.
B. The Neanderthals practiced cannibalism.
C. The Neanderthals cared for the wounded and the elderly.
D. The Neanderthals ate a lot of sugary foods, causing tooth decay.

Answers

The answer is C: The Neanderthals cared for the wounded and the elderly. The fact that the skeleton showed signs of broken bones that had healed indicated that the individual had been nurtured back to health after injury. The loss of teeth showed that the individual had lived to an old age.

The given scenario indicates that the Neanderthals practiced cannibalism. The correct option is C.

What is cannibalism?

Cannibalism, also known as anthropophagy, is the consumption of human flesh by humans. The term is derived from the Spanish name (Carbales, or Canbales) for the Carib, a West Indian tribe famous for cannibalism.

It has since been expanded to include individuals of a species who consume individuals of the same species. Anthropophagy literally means "man-eater," so it is limited to humans.

Archaeologists from France and the United States discovered clear evidence of cannibalism.

"This is conclusive evidence that at least some Neanderthals practiced cannibalism," said paleontologist and integrative biology professor Tim White.

Thus, as there are several broken bones had healed, and almost all of his teeth had fallen out means option B is correct.

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The waves that have shorter wavelengths than visible light are: (check all that apply)

Question 14 options:

Radio stations


Ultraviolet waves


Gamma rays


Mircowaves

Answers

The answers are Gamma rays and Ultraviolet  waves. Light waves with shorter wavelengths and higher frequencies also have more energy, so types of light like gamma rays, X-rays, and ultraviolet light are more energetic than visible light, and infrared , microwaves, and radio waves are less energetic than the light in the visible spectrum.

Final answer:

Among the given options, ultraviolet waves and gamma rays have shorter wavelengths than visible light; thus, they are the correct choices. Radio stations and microwaves have longer wavelengths.

Explanation:

The waves that have shorter wavelengths than visible light are ultraviolet waves and gamma rays.

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes gamma rays, X-rays, ultraviolet rays, visible light, infrared radiation, microwaves, and radio waves. Of the options provided, ultraviolet waves and gamma rays have shorter wavelengths than visible light. Gamma rays have the smallest wavelengths but the highest frequencies and energies, while ultraviolet rays also have wavelengths shorter than visible light but are less energetic than gamma rays.

Radio stations and microwaves have longer wavelengths than visible light. Radio waves, in particular, have the largest wavelengths and the lowest frequencies and energies, while microwaves have shorter wavelengths than radio waves but still longer than visible light.

How could a diuretic reduce water reabsorption in the kidneys?


Inhibit ADH release

Stimulate excessive ADH release (I put)

Stimulate excessive thirst response

Inhibit thirst response

@carsonsi @luckycoins888,

Answers

The answer is inhibiting excessive ADH release could be a way of reducing water re-absorption in the kidneys.
Alcohol is a substance that can stimulate the release of ADH. Unfortunately, there are no drugs as of now that can reduce or stop the release of ADH.


Answer:

The correct answer will be option-Inhibit ADH release.

Explanation:

Diuretics are the substance usually drugs which helps in the diuresis or the production of more urine with a high amount of water and sodium ions. These diuretics are used in the clinical department to treat blood pressure.

The diuretics act by inhibiting the release of the vasopressin or anti-diuretic hormone (ADH) which helps in reabsorption of sodium and water from the urine. Since no ADH is released in the body, more water is released with the urine.

Thus, option-Inhibit ADH release is the correct answer.

Which immunoglobulin class has a dimeric structure with a secretory component? igm iga ige igg?

Answers

The answer is IgA. 
IgA is the immunoglobulin that consists of a dimer or a tetramer, a J-chain polypeptide, and a polypeptide chain called the secretory component. IgA is the principal antibody class in the secretions that bathe the mucosal surfaces, acts as an important first line of defense. It is also an important serum immunoglobulin, mediates a variety of protective functions through interaction with specific receptors and immune mediators.

The smooth-grained version of granite is the rock ___________.

Answers

Hello there!

The smooth-grained version of granite is the rock rhyolite. This would be the kind of rock that would be practically smooth, and it would be a version of a granite rock. They would be an illustration of the rock below.

I hope this helps you!
Hi there!

The smooth-grained version of granite is the rock rhyolite. 

Hope this helps!

What is a virus envelope in biology?

Answers

The Virus Envelope is where the capsid is surrounded by lipid bilayer that contains viral proteins, usually including the proteins that would enable the virus to bind to the host cells. and is derived from the host cell membranes. They may help viruses avoid the host immune system. The viral envelope then fuses with the host's membrane, allowing the capsid and viral genome to enter and infect the host.

Help?

Explain the influence that Darwin's idea of natural selection had on the modern theory of evolution.

Answers

Well, once, people thought that evolution had a goal, and was not random. That belief was called goal oriented evolution. Darwin's theory of natural selection stated that evolution happened because of how species adapt to their environment. If they cannot adapt, they'll die, which leaves those who can adapt. So now thanks to him, our idea of how the natural world came to be today is much more developed.

Bottom trawling is considered destructive because _______.
a.
it destroys sea floor habitats
b.
it depletes fish populations
c.
it shatters deep-sea coral
d.
all of the above

Answers

Answer:

the answer is ALL OF THE ABOVE

Bottom trawling is considered destructive because it destroys seafloor habitats, depletes fish populations, and it shatters deep-sea coral. So, it's D i.e. all of the above.

What do you mean by Habitat?

Habitat may be defined as a type of natural environment for which a particular species is best adapted due to natural selection.

Bottom trawling is an activity of fishing practice that herds and grasps the target species by hauling a net along the seafloor.

This activity creates a disturbance along the seafloor which leads to the population depletion of fishes and destructs the deep-sea coral.

Therefore, the correct option for this question is D.

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After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body? Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being transported to her lungs. This is a result of aerobic respiration. Heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. Lactate is being transported to her liver. This is a result of aerobic respiration. Strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration. Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.

Answers

anaerobic respiration

Final answer:

Frida's heavy breathing after exercise indicates her body is trying to pay off an 'oxygen debt' incurred by ATP production during vigorous muscle activity. This is possible due to anaerobic respiration wherein the body, demanding a high oxygen intake, continues with an escalated breathing rate post-exercise until the oxygen debt is repaid.

Explanation:

Following intense exercise, the heavy breathing that Frida continues to experience is a result of her body trying to repay an oxygen debt. Oxygen debt is created during intense muscle activity, where ATP - the primary source of energy for cellular reactions - is produced without oxygen during muscle contraction. This is due to a process called anaerobic respiration.

To restore ATP and creatine phosphate levels, convert lactic acid to pyruvic acid, and in the liver, to convert lactic acid into glucose or glycogen, a substantial amount of oxygen is required. These processes all contribute to the increased breathing rate even after exercise has stopped. The body continues to demand a high intake of oxygen until the oxygen debt is repaid.

Thus, the scenario described represents an instance of anaerobic respiration following a strenuous exercise that led Frida's body to fall into an oxygen debt, thereby causing a high breathing rate, with lactate being transported to the liver after the exercise completed.

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Devise a logical argument for why it is beneficial to use names for hurricanes over latitude longitude identification methods

Answers

How many people understand where longitude and latitude locations? Maybe if you lived in the path of the hurricane it would matter, but somebody would know that.

A name is easier to remember than a location. What would it matter to a newspaper reporter to read the lat and long? What kind of a comment could he make? Eventually he would relate it to something that is not a number. 
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