Biology High School

The upper temperature limit at which cells can function is determined by the _______ point of _______.

Answers

Answer 1
The correct answer is that the upper temperature limit at which cells can function is determined by the denaturation point of proteins. Proteins, one of the molecular building blocks of life (along with carbohydrates, fats, and nucleic acids) are the ones responsible in performing various cellular functions. These proteins are polypeptides folded properly to perform specific functions. In the event of high temperatures, these proteins unfold and lose their function thereby having the whole cell lose its function. 
Answer 2
The upper temperature limit at which cells can function is determined by the denaturation point of proteins. Proteins work at specific or optimum temperatures, these including enzymes that catalyze most reactions in the body, without which high temperatures denatures them distorting their secondary and tertiary structures, while low temperatures below the optimum temperatures deactivates the proteins. Therefore, at high temperatures and low temperatures, cells may not be in a position to carry out their activitities as many enzymes or proteins are either denatured or inactive.

Related Questions

The final step of the healthcare reimbursement process is this?

Answers

I think the last step is Reconciliation. This is the process the healthcare provider analyzes received payment information compared to submitted claim information for accuracy. If the provider believes that the claim was inappropriately denied by the payer, the dispute process begins until satisfactory reconciliation is achieved by the provider and the third party payer.

The final step is the actual transfer of funds, either to the healthcare provider from the insurance company and/or the patient, or directly to the patient if the patient has already paid and is seeking reimbursement.

The final step of the healthcare reimbursement process is the payment to the healthcare provider or the reimbursement to the patient.

To elaborate, the healthcare reimbursement process typically involves several steps:

1. Service Delivery: The patient receives medical services from a healthcare provider.

2. Submission of Claim: The healthcare provider submits a claim to the insurance company detailing the services provided and the associated costs.

3. Claim Processing: The insurance company reviews the claim for accuracy and coverage eligibility based on the patient's insurance policy.

4. Adjudication: The insurance company determines the amount they will pay for the services rendered. This may involve applying deductibles, copayments, and coinsurance as outlined in the patient's policy.

5. Explanation of Benefits (EOB): The insurance company sends an EOB to the patient, which details the services covered, the amount paid, and any remaining balance for which the patient is responsible.

6. Payment: The insurance company issues payment to the healthcare provider for the amount covered under the patient's policy. If there is a remaining balance after insurance has paid its portion, the patient is responsible for paying this balance directly to the healthcare provider.

7. Reimbursement to Patient: In cases where the patient has paid the healthcare provider out-of-pocket, the insurance company may reimburse the patient for the amount covered under their policy, minus any deductibles, copayments, or coinsurance.

Suppose you want to check for earthquake danger before buying a new home. How can you check the regional geology for earthquake danger? The actual building site? The home itself?

Answers

In order to check the regional geology for earthquake danger one should view fault and hazard maps of the area. A fault map shows the distribution of faults or fault zones in an area. A fault is a crack in the earth's surface along which movement occurs.

Hazard maps take into consideration the historic occurrences of earthquakes in the region and shows the probability of likely earthquakes in the region.
the actual building site can be assessed by using a soils map. Different soils react in different ways to seismic waves. The amplitude of seismic waves are either amplified or suppressed depending on the
type of soil or bedrock.
Homes showing signs of susceptibility to earthquakes often have cracks in the structure. These can be caused by minor quakes.

Which characteristic of lymphatic capillaries is correct? which characteristic of lymphatic capillaries is correct? they have smaller diameters than blood capillaries. they typically have a rounded, regular appearance in sectional view. they originate as pockets rather than forming continuous tubes. they have thicker walls than blood capillaries?

Answers

The correct answer is "they originate as pockets rather than forming continuous tubes". 

This is because lymphatic capillaries are small, thin walled vessels that are closed at one end (originate as pockets). This end is located in the interstitial tissue wherein the lymphatic capillaries drain the excess interstitial fluid. Lymphatic capillaries are also located in the digestive tract wherein they act as the conduit for fat absorption (cisterna chyli).

Final answer:

The characteristic of lymphatic capillaries that is correct is they originate as pockets rather than forming continuous tubes, allowing them to effectively collect interstitial fluid.

Explanation:

The correct characteristic of lymphatic capillaries is that they originate as pockets rather than forming continuous tubes. Unlike blood capillaries, which are the smallest vessels of the vascular system with a continuous structure, lymphatic capillaries are formed by overlapping endothelial cells that can open to allow interstitial fluid to enter when interstitial pressure increases. Thus, they begin as closed-end tubes (or pockets) that do not form a continuous network like blood capillaries.

The beaks of finches on the galapagos islands enlarged over generations in response to

Answers

I think the answer would be needs. Hope this helps.

What is the term given to those organisms living in the pelagic zone that can swim? question 4 options: nekton benthos coral reef plankton save?

Answers

Hello! 

The term given to those organisms living in the pelagic zone that can swim is Nekton

The Pelagic zone is also called the open ocean. It's the water column that is not over the continental shelf. The living organisms in the pelagic zone that can swim are called Nekton. This is a term given by Ernst Haeckel, a German biologist, to distinguish the active organisms (Nekton) from the passive ones (Plankton). 

Organisms that can be classified as Nekton include Sharks, Squids or Crabs, among many others. 

Answer:

Nekton is the answer

Explanation:

I just took the test, trust me it is Nekton

Look at Figure 19–7 p.544. Which of the following explains why the edges of Africa and South America fit together like two pieces of a puzzle?

Answers

This question is incomplete. However, the answer to this question is Continental Drift. Approximately 300 million years ago, there were not separate continents, only one giant super continent that we call Pangaea. Over time, scientists realised that the Earth's outer shell slides over the inner mantle through plate tectonics. Around 200 million years ago, Pangaea began to break up through the process of continental drift. Gondwana, incorporating present-day Africa, South America, Antarctica, India and Australia, split from Laurasia (Eurasia and North America). Approximately 150 million years ago, Gondwana started to break up into the present day continents

Henrietta gets a phone call that she is going to be laid off from her job. henrietta is scared and shocked. in response to this stressor, her pituitary gland has received a signal from her hypothalamus to release a hormone called:

Answers

Adrenocorticotropic Hormone,an important component of the suprarenal pituitary hypothalamic axis and often occurs in response to stress. Its main effects are the increase in production and the release of cortisol by the cortex of the adrenal gland. Adrenocorticotropic hormone is also related to the circadian rhythm of many organisms.  

What is the sac around the heart that secretes a lubricating fluid to prevent frictions from the movement of the heart?

Answers

The sac around the heart that secretes a lubricating fluid to prevent frictions from the movement of the heart is the Pericardium.

The pericardium is the membrane that encloses the heart. It helps protect the heart from infections and also prevents the heart from filling with too much blood.

ANSWER: Pericardium

Hope this helps! :)

What situation results from a postfertilization barrier to reproduction? what situation results from a postfertilization barrier to reproduction? gamete incompatibility mechanical isolation of a species mutations in genes that control development offspring that fail to develop?

Answers

I believe the answer is Offspring that fail to develop. Post-fertilization barriers is where fertilization occurs but hybrid cannot reproduce. There two types of post fertilization barriers; Hybrid in-viability where the Zygote cannot complete development b/c genetic instructions are incomplete. The other one is Hybrid sterility where the hybrid organism cannot produce offspring b/c chromosome number is odd. 

If you observed the sister chromatids separating during cell division, what phase of mitosis would you be observing?

Answers

This is the anaphase of mitosis. Anaphase is characterized by the separation of sister chromatids or "pulling away" of the sister chromatids from the metaphase plate to the opposite spindle poles. This is also the phase where chromosomes reach its maximum condensation meaning that the process of the reformation of the nucleus will be shorter and easier.

Immediately after gastrulation:
1. The embryo forms a blastula
2. Sperm travel to the oviduct
3.The body axis of the embryo appears
4.The fetus’ circulatory system begins to mature

Answers

Immediately after gastrulation:

1. The embryo forms a blastula.

- Gastrulation is the process during embryonic development where the three primary germ layers (ectoderm, mesoderm, and endoderm) are established.

- Following gastrulation, the embryo transitions into the next developmental stage, which is the formation of a blastula.

- During blastulation, the cells arrange themselves into a hollow sphere known as the blastula, with a fluid-filled cavity called the blastocoel.

- This stage sets the foundation for further differentiation and development of specialized tissues and organs in the embryo.

2. The body axis of the embryo appears.

3. Sperm travel to the oviduct.

4. The fetus’ circulatory system begins to mature.

- The appearance of the body axis occurs during gastrulation itself, not immediately after.

- Sperm travel to the oviduct for fertilization, which typically occurs before gastrulation.

- The maturation of the fetus' circulatory system happens later in embryonic development, not immediately after gastrulation.

How do psychologists describe the human memory system?

Answers

''Psychologists use memory models to think and communicate about memory. Information-processing models involve three processes: encoding, storage, and retrieval. The connectionism information-processing model views memories as products of interconnected neural networks. The three processing stages in the Atkinson-Schiffrin model are sensory memory, short-term memory, and long-term memory. More recent research has updated this model to include two important concepts: (1) working memory, to stress the active processing occurring in the second memory stage; and (2) automatic processing, to address the processing of information outside of conscious awareness.''
Final answer:

The human memory system is often described through the Atkinson-Shiffrin model, which suggests memory operates in three stages: Sensory Memory, Short-Term Memory, and Long-Term Memory. This model characterizes memory as an information processing system where memory functions include encoding, storing, and retrieving information.

Explanation:

Psychologists describe the human memory system using a model called the Atkinson-Shiffrin model of memory, first proposed by Richard Atkinson and Richard Shiffrin in 1968. This model suggests that memory passes through three distinct stages: Sensory Memory, Short-Term Memory, and Long-Term Memory. Memories first enter our sensory memory where they stay for less than a second to a few seconds before those we pay attention to move into short-term memory. With the process of rehearsal, they then move into long-term memory for permanent storage. This model likens human memory to an information processing system, similar to a computer, where memory functions are classified into three basic operations: encoding, storing, and retrieving information.

In addition to this model, other models, like that proposed by Baddeley and Hitch, suggest a more complex system involving a feedback loop between short-term and long-term memory.

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Levinson placed the greatest weight on the five periods of adulthood. what are these five periods?

Answers

1. infanc
.2. toddler
3.preteen
4.teenager
5. Adulthood

The five periods of stress in the period of adulthood of a person are as follows:

1. Early period of transition to adulthood

2. Entering adulthood

3. Period of transition during the age of 30 years

4. Period for settle down

5. Transition of midlife

These are the periods described by Levison, which are faced by adults.

50 Points! Easy. You are making up your own organism and writing about 3-5 adaptations it has to survive in the Alpine biome.

Answers

You can so an animal like and elk and give it 
 extra fur
 camaflouge 
a way to hunt food

WHAT IN THE WORLD IS THE ALPHINE BIOME!?!?!?!?!?!?!?!! (-_-)

Strength gains with ____ training are specific to the angle of muscle contraction.

Answers

The answer is isometric training. To simplify, the strength gains with isometric training are specific to the angle of muscle contraction. In addition, Isometric exercise or isometrics are a kind of strong physical activity in which the joint angle and muscle length do not alter throughout contraction likened to concentric or eccentric contractions or as called as dynamic or as isotonic activities.

Which cells in your body contain your entire DNA code?
A) Nerve cells only
B)Brain Cells Only
C)All your cells

Answers

Hi!

The correct answer is C) All your cells

This is because all of the cells in your body contain proteins which are made up of amino acids which contain your DNA.
Final answer:

Every cell in your body, with very few exceptions like red blood cells, contains your entire DNA code. This DNA serves as a blueprint, guiding each cell's function. However, some exceptions exist like the mitochondria in cells that carry a bit of their own DNA.

Explanation:

The correct answer to your question is C) All your cells. Every single cell in your body, except for a few exceptions like red blood cells, contain your complete DNA code. Your DNA is basically a blueprint for your body. Every cell needs this blueprint to function properly; for instance, your skin cell needs to know it is a skin cell and so on. This complete set of DNA or genome is found in the nucleus of the cell. However, there are some exceptions where part of your DNA, not the entire blueprint, is found, as in the case of mitochondria in your cells, which contain a small amount of their own DNA.

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Explain the biological reason children tend to avoid new foods. review

Answers

Because they are scared that they won’t like it or scared to eat it.

The masculinity/feminity index (mas), identified by geert hofstede, focuses on risk orientation.
a. True
b. False

Answers

The correct answer is true

How does the random movement of molecules bring about an even distribution of molecules throughout the system?

Answers

Diffusion is the random movement of molecules or particles from a region of high concentration to a region of low concentration bringing a natural flow in the system. Diffusion ensures that there is a state of equilibrium in the number of molecules in the system.

What is the physical state of dna after being denatured by heat?

Answers

I believe when DNA is denatured by heat, hydrogen bonds are separated to create single stranded DNA. When the DNA solution is heated enough, The double stranded DNA unwinds, and the Hydrogen bonds that hold the two strands together weaken and finally break. The process of breaking a double-stranded DNA into single strands is known as DNA denaturation, or DNA melting.
The answer would be single-stranded

When DNA denaturated, the hydrogen bonds will be separated. This cause the DNA structure becomes single stranded. 
Heating DNA is used for replicating DNA(PCR) because as the DNA unwinded it is exposed and the enzyme to synthesize nucleic acid bind into it.

Constance's body is capable of producing insulin, but the insulin is misused. her condition is known as ____.

Answers

Answer:

Constance's body is capable of producing insulin, but the insulin is misused. her condition is known as pre-diabetes.

Explanation:

Prediabetes is the preliminary stage of diabetes mellitus where all the symptoms necessary for the diagnosis of diabetes are absent, but the blood sugar is abnormally high.

Prediabetes is associated with obesity (especially abdominal or visceral obesity), high triglyceride and / or low HDL cholesterol dyslipidemia and hypertension. Therefore, it is a metabolic diathesis or syndrome, and it usually does not produce any symptoms, and the only symptom is high blood sugar.  

Impaired fasting blood glucose and impaired glucose tolerance are two types of prediabetes that are similar in clinical description (high blood glucose levels in both cases) but are physiologically different. Insulin resistance, insulin resistance syndrome and prediabetes are closely related and have overlapping aspects.

The nurse is caring for a patient admitted to the psychiatric unit with a diagnosis of schizophrenia. the patient has not bathed recently, and a family member states that the patient has not been out of the house for 10 days. on admission, the patient tells the nurse, "they are trying to hurt me; don't let them hurt me." this is an example of which symptom?

Answers

This is an example of persecutory hallucinations in which the affected persons believe they are being maliciously maligned, persecuted, obstructed, trick, spied on or physically hurt. Persecutory hallucinations or delusions are the most common form of delusions in paranoid schizophrenia. Generally, the patient thinks that harm is occurring, or is going to occur. Individuals with this kind of hallucinations are often resentful and angry, leading to an act of violence against those they believe are hurting them or their loved one.

The bionic pancreas sends a signal to a device to release hormones into the bloodstream to regulate blood sugar. Identify one hormone the device would most likely release.

Answers

The glucose levels in the blood are regulated by two hormones secreted by the pancreas. The bionic pancreas can send the signals to release the hormone responsible for the blood glucose regulation.

The device, which receives the signal from bionic pancreas can release glucagon or insulin. As this device is used for the people suffering from diabetes, the device is more likely to release insulin.

Hence, the answer is insulin.

What is the function of the keratin found within skin cells?

Answers

I believe keratin functions to prevent water loss from the skin. Keratin is a protein mostly found in the hair, skin and nails. It can also be found in internal organs and glands, it is a protective protein, less prone to scratching or tearing than other types of cells produced by the body. Therefore, keratin serves important structural and protective functions, especially in the epithelium, the have also been found to regulate cellular activities such as cell growth.
Final answer:

Keratin found within skin cells provides hardness and water-resistant properties to the skin, protecting it from water loss, microbial growth, and degradation by bacterial enzymes.

Explanation:

The function of keratin found within skin cells is to provide hardness and water-resistant properties to the skin. Keratin is a type of structural protein that is produced by keratinocytes, which are the predominant cells found in the epidermis. The keratin in skin cells, along with fatty acids on the skin's surface, helps create a tough and waterproof barrier that protects the body from water loss, microbial growth, and degradation by bacterial enzymes.

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Your friends are worried because their newborn sleeps 16 or 17 hours a day. what would you tell them?

Answers

It may be perfectly healthy that their newborn is sleeping this long so unless they start displaying other strange symptoms that cause concern, there is no need to worry. They could suggest that they are concerned to the midwife if they feel anxious, to get a professional opinion.

Why do some kinds of point mutations (substitution) generally result in greater changes in proteins than others?

Answers

Frameshift will affect the one base and substitution and deletion affects the sequence of bases

Some kinds of point mutations (substitution) generally result in greater changes in proteins than others because they occur in certain regions of proteins that are critical for its function.

What is a point mutation?

Point mutations are changes in a single nucleotide in a gene. It can be in the form of substitution, deletion, alteration, etc.

They can have a significant impact on the function of protein that is produced from that gene. The extent to which a point mutation affects a protein can depend upon several factors, including the location of the mutation and the type of mutation.

Overall, the extent of point mutation impacts a protein depends on the specific detail of the mutation and the protein in the question and can only be determined through careful study and experimentation.

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1. Of the 10,000 neuropsychological assessments performed, how many cases involved probable malingering?


Probable malingering was present in how many medical cases not related to litigation or compensation claims?


What does Dr. Larrabee state about malingering cases?


Why do patients pretend to be sick?


What is motivating people to fake illness?


Why is difficult to detect malingering?


Where do patients go to learn the symptoms of their condition? How can this be problematic for detecting malingering?


What is a key barrier to pinpointing malingering?


What are some signs that the patient may be faking?


Why is malingering a problem in the healthcare field?


What are some questions doctors should ask themselves?


Review how to identify a malinger. Is there anything else you can think of to detect malingering?

Answers

if you look it up on the internet u will get it.

In which situation would the stroke volume be the greatest? when venous return is increased when venous return is decreased when the force of contraction is decreased when the difference between edv and esv is small when calcium channel blockers are present?

Answers

The correct answer is "when venous return is increased".

This is because when the venous return from the pulmonary veins to the left atrium and subsequently the left ventricle, there will be an increase in the left ventricular filling pressure and volume or the preload which in turn will result to increased left ventricular stroke volume.

The other choices will cause a decrease in stroke volume.

The situation in which the stroke volume would be the greatest is when venous return is increased. The correct option is A.

When the venous return is increased, there is a larger volume of blood returning to the heart from the venous system.

This increased blood volume fills the ventricles during diastole and leads to a greater preload (stretch) of the cardiac muscle fibers. This increased filling leads to a greater stretch of the cardiac muscle fibers (preload) and results in a more forceful contraction. As a result, the stroke volume is likely to be greater when venous return is increased.When venous return is reduced, there is a decreased amount of blood returning to the heart.As a result, the preload and stretch of the cardiac muscle fibers are reduced, leading to a weaker contraction.

Thus, the correct option is A.

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Complete question:

In which situation would the stroke volume be the greatest?

A. when venous return is increased

B. when venous return is decreased

C. when the force of contraction is decreased

D. when the difference between EDV and ESV is small

E. when calcium channel blockers are present

Which option best explains why nutrients for epithellal cells are obtained by diffusion from the underlying connective tissue?

Answers

avascularity  is the  option  term which  best   explain  why  nutrient   for  epithelial  cell   are  obtained  by   diffusion   from the   underling   connective  tissue.  Epithelial membrane  consist of   continuous   sheet  of  cell. one   or  more  layer  thick  and  are  attached  to  the   underlying  connective  tissue  by  a   basement  membrane. Nutrient  and   oxygen  reach  epithelial  membrane   by  diffusion   from  blood  vessel  which   are  located  in  the   connective  tissue   beneath the basemen  membrane

What do you call it when scientists change the genes that line a dna molecule?

Answers

I think it is called genetic engineering. It is also called genetic modification, it is the modification of an organism's genetic composition by artificial means, often involving the transfer of specific traits or genes, from one organism into a plant or animal of an entirely different species.   An example of genetic engineering is cloning which involves producing a genetically identical copy of an organism.
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