Answer:
I disagree because there are examples that contradict this assertion
Explanation:
In the last years, sustainable human development has been one of the most important challenges in order to avoid Earth's collapse. In accordance with this aim, many people around the world are learning to responsibility use natural resources and live in communion with ecosystems capable of providing the primary matter required for economic progress. Examples of human groups that learned to use the available resources in a sustainable way include isolated societies living in forest areas, which live independently from the external globalization phenomenon. Moreover, in many countries, the percentage of energy obtained from clean sources is progressively increasing year by year, thereby supporting the fact that human societies can live sustainably.
The diagram shows two charged objects, A and B.
Based on the field lines, what are the charges of the
objects?
3
A: positive
B: negative
O A: negative
B: positive
O A negative
B: negative
OA: positive
B: positive
A
B)
AR
NAL
Save and Fit
Answer:
A: positive
B: negative
Explanation:
Hope it helps.
Answer
A is positve and B is negitive
Explanation:
21. Evidence in support of the importance of endosymbiosis in the evolution of
eukaryotic cells is:
a, Organelles that have their own unique unique DNA and ribosomes
Organelles that have a double membrane
6. Organelles are in the same size range as free living prokaryotes
d. All of the above
Answer:
d. All of the above
Explanation:
The theory of endosymbiosis is important as it explains the evolution of eukaryotic cells from prokaryotic cells.
This theory also explains the origin of chloroplast and mitochondria. Several evidences in support of the importance of endosymbiosis in the evolution of eukaryotic cells are as following:
Organelles have their own separate DNA and ribososme.Organelles that have a double membrane (inner and outer).Organelles are in the same size range as free-living prokaryotes.Chloroplast and mitochondria are the examples of such organelles.
Hence, the correct answer is "d".
Ionic compounds form ions in water.
True?
False?
Answer:
True
Explanation:
For example, NaCl - sodium chloride, when dissolved in water forms Na+ and Cl- ions.
What type of transport occurs in the cell membrane when a person does sports and is consuming alcohol?
Cellular transport: it is the exchange of substances through the plasma membrane, which is a semipermeable membrane. Transport routes are through the cell membrane
It allows the metabolism waste to be expelled from its interior It allows the movement of substances that it synthesizes as hormones. Metabolic energy: is the way in which it acquires nutrients through processes of incorporation into the cell of nutrients dissolved in water.
Therefore, when the person consumes alcohol in excess the ce transport is part of the disincorporation of toxic waste, while when the person does sports, and is supposed to have a balanced diet, the cellular transport uses it for his metabolic energy.
Below are two chemical equations. One is for cellular respiration and one is for photosynthesis. Correctly place the reactants and products in the right location to complete both equations.
Photosynthesis: H20 +H20------------->C6H12O6 +O2
+solar energy CO2
Cellular Respiration:O2+C6H1206 -------->CO2 + H2O
+02
Answer:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
Hope that helps.
The correct equation for cellular respiration and one for photosynthesis are:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
What is cellular respiration?Cellular respiration is a process of converting food into energy that can be used in many processes. It happens when oxygen is combined with food material and releases carbon dioxide as a waste product.
The correct reaction of photosynthesis is when carbon dioxide and water are combined with sunlight to form glucose and oxygen.
The correct reaction of cellular respiration is when glucose and oxygen react and release carbon dioxide and water and energy,
Thus, the correct reactions are:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
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Mutations in region B and region D give the same results - when either of these regions is mutated, the operon is expressed under all conditions (called constitutive expression). You hypothesize that region B is the operator region and that Region D is the repressor protein. To test your hypothesis, you create two partial diploid lines by introducing a F' plasmid with a wild-type lac operon: Strain 1: F' A B C D E / A B- C D E Strain 2: F' A B C D E / A B C D- E What experimental results would be predicted by your hypothesis
Answer:
As it is given in the question that region D is the repressor protein and operator region is region B then the The repressor region D form a protein that will bind to the operator region B and leads to inhibition of the transcription. So, the repressor protein will not repressed a mutant operator and the lac gene will express itself constitutively.
Strain 1: F' A B C D E / A B- C D E
In this strain the mutant opertor gene is present so, it will not repressed by F' as it will not be able to bind. Hence, the lac gene expression is constitutive.
Strain 2: F' A B C D E / A B C D- E
In this strain there is two protein produced by the F' plasmid mutated repressor protein, and a non-mutated repressor protein. As we know mutated repressor will not bind to operator gene and still expression will take place but here a extra not mutated non-mutated protein is present and the repressor protein from F' will bind to the operator region B and thus repress the expression of gene in it.
Robert Baratheon had dinner at his favorite Italian restaurant. His menu consisted of a salad, a large plate of spaghetti, garlic bread, and wine. For dessert, he consumed “death by chocolate” cake and a cup of coffee. He topped off his evening with a cigarette and brandy. He returned home and, while lying on his couch watching television, he experienced a pain in his chest. He called 911 because he was certain he was having a heart attack. Robert was told his heart was fine, but he needed to watch his diet. What happened to Robert?
Answer:
he was having a ahstma attack
Explanation:
What is the behavioral biology, ethology, and comparative psychology?
Answer:
Comparative psychology and ethology psychology are both about animal science ( that is all i know about behavioral biology, ethology, and comparative psychology )
forks over knives movie
1. Do you feel that eliminating all "animal-based foods" is the solution to reverse and prevent the chronic diseases that afflict most Americans and other industrialized nations?
2. Do you feel that government agencies, like the USDA, promote eating an animal-based diet? Why or why not?
3. Given this "sudden epidemic" of obesity in America within the last 30 years, do you feel the main cause of our "growing nation" is due to an animal-based diet, increased consumption of processed foods and refined sugars, or a decline in physical activity?
4. Do you feel the success of the patients was due to a) the increased amount of fruits/vegetables and plants or b) the elimination of meats or c) a combination of both? Why? Use information we've learned in class to justify your answer.
5. What part of the movie really stood out to you (good or bad) and why? Be very specific. This is where you show me you paid attention to the entire documentary.
Answer:
1. Yes
2. No
3. Yes
Explanation:
Yes, the elimination of the animal based foods decreases and reduce chronic diseases in many developed countries such as US and England etc. but meat is also very necessary for animal diet due to the presence of high protein content.
No, USDA does not promote the intake of an animal-based diet. this agency promote the intake of nutritious food in a limited amount so it does not cause any disease. They recommend the eating of Grains, Fruits, Protein, Foods, Vegetables and Dairy products in a limited amount.
Yes, the main cause of obesity in Americans is due to two reasons, first cause is the intake of meat in large amount and second cause is the decline in physical activity.
The success of the patients was due to combined effect of increased amount of fruits/vegetables and plants and the elimination of meats. By using these two element the patient will quickly recovered.
Flicker-fusion is the ability to distinguish many seperate flashes of light simultaneously. How do most flying insects compare to humans and why?
Answer:
Flicker fusion is the ability to distinguish many separate flashes of light simultaneously.
Flying inscets and humans, both have the ability of flicker fusion and it provides them to give a better visual of a fast-moving objects. Though humans have less flicker fusion threshold than insects.
They both can change their flicker fusion threshold as a function of viewing stimulus size, distance, luminance, intensity, achromatic vs. chromatic, and retinal location.
Desribe the structure of amino acids including what makes amino acids different from each other
Answer:
1) Amino acid contains a central carbon atom attached to: an anime group, carboxyl group, hydrogen atom and a side chain
2) The side chain of each amino acid differentiates from one another
Please find the description below
Explanation:
Amino acids are monomeric chemical compounds that forms the make up of a protein. Amino acids , like every other chemical compound, have a structure. Amino acids have two functional groups i.e. amine group (-NH2) and carboxylic acid group (-COOH).
All amino acids, which are naturally 20 in number have basic parts in common namely: 1) a central carbon atom, also called the alpha carbon 2) a hydrogen atom 3) an amine group i.e. (-NH2) 4) a carboxyll group i.e. (-COOH)
These are the basic parts of all amino acids, however, the difference between the amino acids is found in the series of different atoms called Side chains or R group that attach to the alpha carbon. These R group makes each amino acid specific and different. For example, a side chain containing sulphur (CH3-S-(CH2)2) is the R group of methionine. Each amino acid has a different side chain attached to the basic structure listed above.
When curare, a South American arrow poison, is placed on a nerve-muscle preparation, the muscle though a neurotransmitter is still being released from the nerve. Give a possible explanation for the action of curare (be sure to include specific details explaining does not contract when the nerve is stimulated, even how and why).
Answer:
In a muscle contraction,neurotransmitter acetycholine stimulate the post synaptic membrane of the neuron or the sarcolemma of the muscles cells at the motor end plate .This neurotransmission effect leads to the opening of ligand gated sodium channels.
Therefore action potential(Endplate potential) is transmitted across the synaptic juction to to the muscles to bring about contraction of muscles(effector) .Therefore Acetycholine is refereed to as excitatory hormone.
Curare works as competitive inhibitor of acetycholine at the motor end plate. It prevents the binding of Acetycholine with the endplate.Therefore, ligand gated Na+channels can not open, thus End potential can not be generated due to lack of depolarization, thus contraction of muscles is inhibited.
Thus,despite the fact that the neurotransmitter is produced, the curare has blocked the end plate.So, no muscles contraction will occur because ,no place for the the excitatory acetylcholine to bind with.Hence the the muscle cells are in the permanent state of relaxation (resting membrane potential).
Animals poisoned with this substance usually asphyxiate because of paralysis of the diaphragm, external and internal inter-coastal muscles and collapse of the lungs and therefore failure of the entire respiration muscles and system.Thus lack of oxygen from failed breathing.
Explanation:s
In a
1. What must occur for a double-helix strand of DNA
transcription into RNA? What enzymes or protein
2. What are two key differences between DNA and I
composition and location within the cell.
3. Why does DNA transcribe itself into RNA? What i
cell?
4. How might a mistake during transcription impact t
organism? What is the biological name for such a
5. Provide the corresponding RNA strand that would
segment of DNA: ATTCGCACT
1) What must occur for a strand of double-helix DNA before it can transcribe itself into RNA is the DNA must unwind its double- helix near the gene that is going to be transcribed. This region that the DNA has opened up is called transcription bubble.
2) The two key differences between DNA and RNA is that DNA contains sugar deoxyribose, while RNA contains sugar ribose. The second key difference is DNA's nitrogen bases are adenine, cytosine, guanine and thymine ( A, C, G, T ) while in RNA instead of thymine there is the uracil base.
( A, C, G, U )
3) The reason DNA transcribes itself into RNA because that is the whole goal of the process called transcription where a strand of DNA is copied into a new molecule of mRNA ( messenger RNA ) to to construct a functional product such as a protein.
4) A error during the process of transcription can change how the organism's physical characteristics or also can impact the way how DNA codes the phenotype. The name that was given for this situation is called a Mutation.
5) DN: ATTCGCACT -----------> RNA: AUUCGCACU
( DNA: A, G, C, & T while RNA: A, G , C , & U )
( DNA: A = T, G = C) (RNA: A = U, G = C)
Which statement describes the moment magnitude scale?
O It measures only small earthquakes.
It collects data using a seismograph.
It shows only the strength of seismic waves that were produced.
Olt determines the amount of damage caused by an earthquake.
ans- it collects seismograph
Answer:
As shown in the edited answer, the correct choice is B
Seismograph is used to record motion of Earth during occurrence of earthquake. Moment magnitude scale collects data using a seismograph.
What moment magnitude scale?The moment magnitude scale is referred to total moment release of the earthquake.
Moment is a product of the distance moved and the force required for it to move . It comes from modeling recordings of the earthquake at various stations.
Scientists using the moment magnitude scale to measure the earthquakes size till magnitude 9.5 which is the largest earthquake unit recorded since seismographs were invented.
Thus, the correct option is B.
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Which of these is an example of a common?
A. Internet
B. Personal computer
C. Cell phone
D. Video game
Answer:
I think it is A. Internet
Explanation:
The movement of ions and other atomic or molecular substances across cell membranes without the need for energy input is known as
Answer:
passive transport
Explanation:
The movement of ions across a cellular membrane without the need for energy input is known as passive transport. Diffusion is the passive movement of molecules from an area of high concentration to low concentration. Voltage describes the difference in electrical potential between two separate points, and isotonic movement describes the activity of a system at equilibrium.
Answer:
Passive transport
Explanation:
The movement of ions across a cellular membrane without the need for energy input is known as passive transport. Diffusion is the passive movement of molecules from an area of high concentration to low concentration. Voltage describes the difference in electrical potential between two separate points, and isotonic movement describes the activity of a system at equilibrium.
PENN
Sean and Tommy are debating the positive and negative impacts of technology on environmental quality. Sean is listing the positive impacts. Which of the following would help his argument? (2 points) Select one: a. Factories add to water and air pollution b. Technology can disrupt natural processes c. Technology has helped make recycling to be more efficient d. More people buy smart phones and tablets ITs listing POSITIVES not negatives, so it has to be C, right?
The cladistic approach to primate classification is Group of answer choices based on levels of anatomical complexity, without consideration of ancestor-descendent relationships. based on direct observation of phenotypes only. based on the use of anatomical and genetic evidence to establish ancestral relationships. also called the gradistic method of classification.
Answer :
based on the use of anatomical and genetic evidence to establish ancestral relationships
Explanation :
We know that,
The cladistic approach to primate :
The cladistic approach to primate is defined as phenotypically and anatomical characteristics, genetic and common characteristics that established ancestral relationships.
It is not purely based on phenotypes only, it required genetic and anatomic behaviour and evidences.
Hence, The correct answer is option (III)
Which of the following statements best describes the role of hormones in the body? Hormones send chemical signals throughout the body to regulate body processes.
Answer:
Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus elicits the release of a substance; once the substance reaches a certain level, it sends a signal that stops further release of the substance. In this way, the concentration of hormones in blood is maintained within a narrow range. For example, the anterior pituitary signals the thyroid to release thyroid hormones. Increasing levels of these hormones in the blood then give feedback to the hypothalamus and anterior pituitary to inhibit further signaling to the thyroid gland, as illustrated in Figure 18.14. There are three mechanisms by which endocrine glands are stimulated to synthesize and release hormones: humoral stimuli, hormonal stimuli, and neural stimuli.
Explanation:
Hyperthyroidism is a condition in which the thyroid gland is overactive. Hypothyroidism is a condition in which the thyroid gland is underactive. Which of the conditions are the following two patients most likely to have?
Patient A has symptoms including weight gain, cold sensitivity, low heart rate and fatigue.
Patient B has symptoms including weight loss, profuse sweating, increased heart rate and difficulty sleeping.Humoral Stimuli
The term “humoral” is derived from the term “humor,” which refers to bodily fluids such as blood. A humoral stimulus refers to the control of hormone release in response to changes in extracellular fluids such as blood or the ion concentration in the blood. For example, a rise in blood glucose levels triggers the pancreatic release of insulin. Insulin causes blood glucose levels to drop, which signals the pancreas to stop producing insulin in a negative feedback loop.
Hormonal stimuli refers to the release of a hormone in response to another hormone. A number of endocrine glands release hormones when stimulated by hormones released by other endocrine glands. For example, the hypothalamus produces hormones that stimulate the anterior portion of the pituitary gland. The anterior pituitary in turn releases hormones that regulate hormone production by other endocrine glands. The anterior pituitary releases the thyroid-stimulating hormone, which then stimulates the thyroid gland to produce the hormones T3 and T4. As blood concentrations of T3 and T4 rise, they inhibit both the pituitary and the hypothalamus in a negative feedback loop.
The statement that describes the role of hormones in the body is Enzymes reduce the activation energies of biological reactions.
What are hormones?Hormones are chemicals that are secreted by the two glands, endocrine and exocrine glands.
Endocrine glands secrete hormone directly into the bloodstream, and exocrine glands are secrete hormones into ducts.
The options are attached here:
A.Enzymes aid biological reactions by providing more reactants.B.Enzymes aid biological reactions by removing products quickly.C.Enzymes raise the temperature in a cell to speed up biological reactions.D.Enzymes reduce the activation energies of biological reactions.E.Enzymes reduce the energy of products in biological reactions.Thus, the correct option is D.Enzymes reduce the activation energies of biological reactions.
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Use the following information to answer the question below.
Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all F1 individuals have red, axial flowers. The genes for flower colour and location assort independently.
If 1000 F2 offspring resulted from the cross, approximately how many of them would you expect to have red, terminal flowers?
Answer:
750
Explanation:
With the f1 generation all being red flowers we can conclude that Red is dominant (R) and white is recessive (r).
This leads to the f1 generation having Rr. If you breed two Rr together you get
1 RR
2 Rr
1 rr
75% of the f2 will have red flowers. So if you take 1000 and multiply it by .75 you will get 750
Approximately 750 flowers will be Red.
During an immune response, some cells of the immune system expose antibodies and,
thereby, cause pathogens to be immobilized and form clumps. Which cells of the immune
system have this
function?
A) killer T-Cells
B) helper T-Cells
C) suppressor T-Cells
D) macrophages
i think the answer is B) helper T-Cells
Phytoplankton, shown on the left in the image below, are microscopic organisms that can be found in freshwater and salt water environments. They perform photosynthesis to get energy and act as an important food source for larger organisms, such as the whale that is shown on the right. Phytoplankton A large whale. Which characteristic describes the whale but not its food source, the phytoplankton? The whale is heterotrophic. The whale has cell walls. The whale is unicellular. The whale is a prokaryote.
Answer:
The whale is heterotrophic.
Explanation:
All living organisms require energy for their life processes. In nature, this energy source is obtained by feeding on one another. When one organism eats another, it gets energy. In this case, a large whale is described to be reliant on a photosynthetic phytoplankton for its energy source.
The phytoplankton is capable of producing its own energy source (food) via the process of photosynthesis. Hence, making it an autotrophic organism. However, since the large whale is dependent on the phytoplankton for food/energy source, it is regarded to be heterotrophic i.e. incapable of producing its own food, hence, depends on other organism like phytoplankton in this case.
Answer:
a
Explanation:
why the swimmer push the water backward
Answer:
[tex]\boxed{\mathrm{view \: explanation}}[/tex]
Explanation:
Swimmers push water backwards to propel forwards. In other words, swimmers push their hands and legs against water to move forward. This is stated in the third law of motion, for every action, there is an equal and opposite reaction.
Which of the following processes requires energy from the cell?
A.
Osmosis
B.
Active transport
C.
Diffusion
D.
Passive transport
The following processes requires energy from the cell - B. active transport
Active transport is used by cells to get required molecules such as glucose and amino acids. It requires energy in form of adenosine triphosphate (ATP) is known as primary active transport.
Active Transport works against the concentration gradient and therefore needs energy.Passive transport such as Diffusion and Osmosis, from areas of high concentration to areas of low concentration without the need for energyThus, the following processes requires energy from the cell - B. active transport.
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2 Diseases of a cassava
The overall outcome of the activities carried out under the CaCESA initiative
will improve cassava production and productivity. The effectiveness of
program is based on five axes:
- provision of healthy cassava cuttings to vulnerable families;
- the organization of extensive awareness and communication campaigns;
- national and regional coordination of actors in the production chain and
cassava post-production;
- the improvement of cultivation, processing and conservation practices
cassava;
- control and management of the spread of diseases, whether they are transmitted
insects and / or infected cassava cuttings.
To achieve these results, it will be necessary to build capacity at different
levels. The objectives will be achieved through the implementation of appropriate activities
Explanation:
Answer:
Explanation:
Oidium manihotis
Root Rot Pathogens
Herceptin cancer fighting antibodies cannot be produced through genetic engineering of bacteria. What is used instead to accomplish this? A. Selecting cells that produce a large amount of Herceptin to reproduce over generations B. Genetically engineered mammalian cells C. Genetically engineered Bacteriophages D. Producing them with chemicals instead of inside cells
Answer:
B. Genetically engineered mammalian cells
Explanation:
Herceptin is a monoclonal antibody that binds (attach) to specific antigens in cancer cells to destroy them. This antibody is used in the treatment of different types of cancers including breast and gastric carcinoma, in which HER2/neu protein is overexpressed. Herceptin targets HER2/neu receptors present in cancer cells to kill them. HER2/neu is a protein signaling receptor involved in cell proliferation, thereby this antibody works to selectively target cells that have an excess of HER2/neu receptors such as gastric and breast cancer cells.
Facilitated diffusion of glucose into a muscle cell Facilitated diffusion of glucose into a muscle cell
A) Yes; sodium ion cotransport is required for facilitated diffusion of glucose.
B) No; sodium ion cotransport is required for simple diffusion of glucose, but not for facilitated diffusion of glucose.
C) No; sodium ion cotransport is required for active transport of glucose, but not for facilitated diffusion of glucose.
Answer: Option A.
Yes; sodium ion cotransport is required for facilitated diffusion of glucose.
Explanation:
Glucose is transported in the cell through facilitated diffussion because it is a large molecule and it will very difficult to be transported across the cell membrane through normal diffusion, so it is transported across the the concentration gradients.
sodium ion cotransport is required for facilitated diffusion of glucose because both glucose and sodium cannot be transported through simple diffussion so they pass through specific channels in the hydrophobic barrier formed by membrane proteins. Thereby crossing the membrane, the diffusion is facilitated by the channels but glucose and sodium must move against a concentration gradients tone transported.
Which of the following is an example of specific immunity?
Coughing expels foreign materials from the body.
OT-Lymphocytes recognize, attack, and destroy a pathogen.
Phagocytes engulf and destroy microbes.
The skin blocks the entrance of pathogens.
Answer:
Specific immunity is also called as Acquired immunity and Anamnestic response
2nd option is the answer
lymphocytes recognize, attack and destroy a pathogen
Answer:
Specific immunity is also called as Acquired immunity and Anamnestic response
2nd option is the answer
lymphocytes recognize, attack and destroy a pathogen
Explanation:
2. What can you conclude from your results about the relative effectiveness of antiseptics vs. disinfectants in preventing the growth of E. coli
Answer:
Efficacy o disinfectant is relatively greater than that of antiseptics
Explanation:
Most of the reason has to do with the fact that antiseptics are made in a mild form so as to not harm human tissue, while disinfectants are more concentrated and ought to be applied directly to surfaces in order to sanitize them.
Come up with your own story of a trophic cascade, describing how the organisms occupying the different trophic levels would be affected
Answer:
The leafhoppers eat plant tissues and, at the same time, they are eaten by spiders that are the food of large lizards. Finally, these lizards are the food of birds that are eaten by snakes.
Explanation:
The food chain starts with primary producers such as plants and algae (i.e., level 1), then goes through herbivorous species including insects and fish (level 2) and finally ends with carnivores such as rodents, snakes and hedgehogs (levels 3, 4 and sometimes 5, which depends on presence of larger predators). Thus, the trophic levels are represented by the number of steps of the food chain. In an ecosystem, the organisms can also be classified according to the mode of obtaining the food in producers (autotrophs), consumers (heterotrophs) and reducers (detritivores).