The phylogenetic tree of organisms within the animal kingdom include characteristics below:
Ancestral protistsTissuesbody symmetryGerm layersBody cavityPoriferaPlatyhelminthesNematodaAnnelidaMolluscaArthropoaEchinodermataChordataWhat is phylogenetic tree?A phylogenetic tree simply refers to a branching diagram or a tree showing the evolutionary relationships among various biological species of both plants and animals based on their similarities and differences; either genetically or physically
Generally, animals; be it vertebrates or invertebrates has the few characteristics below:
All animals are multicellular organismsAnimals are also heterotrophic, meaning; they depend on other organisms for food or they obtain their energy by consuming energy-releasing food substances.Animals typically reproduce sexually.All animals are also made up of cells that do not have cell walls.In conclusion, the phylogenetic tree of organisms within the animal kingdom include all characteristics mentioned above
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a student investigates the effect of different fertilizers on tomato plant growth. Identify the dependent, independent and controlled variables in her experiment.
Based on the nature of variables in the experiment:
plant growth is the dependent variablefertilizers is the independent variableSoil type and amount of sunlight is the controlled variablesWhat are variables?Variables in an experiment are those factors which are under the control of the researcher and in which changes in them result in changes in the result of the experiment.
In an experiment in which a student investigates the effect of different fertilizers on tomato plant growth, the various variables are given below:
plant growth is the dependent variable - this variable depends on a change in the independent variablefertilizers is the independent variable - changes in this variable results in changes in plant growthSoil type and amount of sunlight is the controlled variables- this variable is constant.In conclusion, tomato plant growth is dependent on the type of fertilizer.
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What is a scientific explanation of a law?
A. an idea that can't be proven but can explain some phenomena
B. a statement based on repeated experiments and observation that can predict what will happen
C. an educated hypothesis that is supported with evidence
D. a hypothesis that can be tested
Answer:
It is B
Explanation:
A statement based on repeated experiments and observation that can predict what will happen
a scientific explanation of a law is a statement based on repeated experiments and observation that can predict what will happen. Hence option B is correct.
What is Law in Physics ?Scientific laws, often known as rules of science, are assertions that explain or predict a variety of natural events based on repeated tests or observations. In several circumstances (approximate, exact, wide, or limited), the term law is used differently across all domains of natural science (physics, chemistry, astronomy, geoscience, biology). Laws are derived from facts and can be further refined through mathematics; in all cases, they are founded on empirical evidence, either directly or indirectly. It is widely assumed that they implicitly reflect, though do not overtly claim, underlying causal linkages in reality and are found rather than constructed.
Physics laws are, by definition, stated facts that have been inferred and drawn from empirical data. Simply said, the world around us operates in a specific manner, and physical laws are a means of categorizing that operation.
Hence option B is correct.
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Given the sequence of acgtat, read in the 5’ → 3’ direction, what would be the sequence of the opposite strand, read in the 5’ → 3’ direction? is this dna or rna?.
Answer:
The strand would read ATACGT, and it's DNA.
Explanation:
It's the reverse compliment, and as DNA is antiparallel, you would just list the nucleotide sequence corresponding to the backwards order of the original sample. This is a double strand, since there is an opposite strand, which means it is DNA.
3.
Which type of stress is shown in the image?
O A. Shear stress
O B. Tension stress
O C. Compression stress
O D. Uniform stress
O C. Compression stress is the answer of this question
Compression stress is the correct answer
what are the difference between stress and strain ?The major difference between stress and strain is that stress determine the deforming force per unit area of the object, whereas strain determine the relative change in length caused by a deforming force.
a force applied to deform an object, that object is under stress where Stress is defined as the deforming force per unit area of the object.
force on an object into directions parallel and perpendicular to the surface and the normal stress is equal to the force perpendicular to the surface per unit area.
Strain is the amount of relative deformation caused by a force acting on an object, will only consider the normal strain, created by normal stress.
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Bb mates with BB?
Select one:
O a. All of the offspring will exhibit the
recessive trait.
O b. The dominant trait will show up in
about 75% of the offspring.
O c. All of the offspring will exhibit the
dominant trait.
O d. The recessive trait will show up in
about 50% of the offspring.
In complete dominance, the dominant alleles hide the expression of the recessive allele. Option C. All of the offspring will exhibit the
dominant trait.
What is complete dominance?
Complete dominance occurs when one of the alleles -the dominant one- completely hides the expression of the other allele -the recessive one- in heterozygous individuals.
Cross: BB x Bb
Gametes: B B B b
F1)
50% of the progeny will be homozygous BB
50% of the progeny will be heterozygous Bb
100% of the progeny will express the dominant trait.
The correct option is C. All of the offspring will exhibit the dominant trait.
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Which of the following are dangers of Climate change?
I. Disease carrying insects could multiply and spread to new areas
II. The number of floods could increase
III. Due to increased humidity, electricity would be harder to generate and more expensive
IV. Severe droughts could occur
A. II and IV
B. I and III
C. I, II, IV
D. II, III, IV
Answer: D
Explanation:
The following are the dangers of climate change are
I. Disease carrying insects could multiply and spread to new areas.
III. Due to increased humidity, electricity would be harder to generate and more expensive.
IV. Severe droughts could occur.
The correct option is D.
What is climate?Climate is the weather of a place for a long time. Like, the climate of Antarctica is always cold, and the oceans are always frozen. There are different climates in different areas.
Climatic changes are the long term effects that are changing the normal temperature and climatic conditions of an area. This is causing problems with the biotic factors of the area.
Like, the warming of Antarctica is increasing, which is resulting in the melting of ice, which can cause high floods.
Thus, the correct option is D. II, III, IV.
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How would breathing be affected if a bullet makes a hole in the thoracic cavity?
If a bullet makes a hole in the thoracic cavity then that can cause air to enter the pleural cavity directly from the outside.
The second-largest hollow region in the body is the thoracic cavity, often known as the chest cavity. The sternum, or breastbone, the spinal column, and the ribs encompass it. The diaphragm, a muscular and membrane wall, separates it from the abdominal cavity, the body's largest hollow region.
Organs and tissues that are involved in the immune (thymus), cardiovascular (heart, pericardium, great vessels, lymphatics), nervous (vagus nerve, sympathetic chain, phrenic nerve, recurrent laryngeal nerve), respiratory (lungs, bronchi, trachea, pleura), and digestive (oesophagus) systems are found in the thoracic cavity.
The sternum, ribs, thoracic vertebrae, and diaphragm all surround the area of the thoracic cavity. The mediastinum and the chest cavity, where the lungs are located, comprise one compartment.
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Proper functioning of our digestive system is due to the presence of
Proper functioning of our digestive system is due to the presence of Fiber/roughage in our diet.
Explanation:The consumption of roughage, or fiber, has long been recommended as a way to alleviate digestive issues, such as constipation. However, it also plays a number of other critical roles in the body as well. As an example, plant foods are rich in fiber that can promote optimal gut health, keep you at a healthy weight, and even reduce your risk of heart disease. This is because they provide a healthy source of roughage.
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importance of protein in metabolism
Answer:
Protein is also used for growth and repair. Amid all these necessary functions, proteins also hold the potential to serve as a metabolic fuel source. Proteins are not stored for later use, so excess proteins must be converted into glucose or triglycerides, and used to supply energy or build energy reserves.
which function in ms excel must begin with which calculations sign
All formulas in Excel must begin with an equals sign (=).
This is the case because both the formula and the value it calculates are present in or equal to the cell.
What are the main functions of ms excel?
An Excel function is a pre-written formula that facilitates the completion of mathematical, statistical, and logical tasks. When you are comfortable using a function, all you need to do is enter an equal sign (=) in the cell, the function's name, and the cell range it applies to.
IF function; Using Excel's IF function, two values are logically compared. Either TRUE or FALSE is the outcome of the IF function. For instance, we can determine whether cell B2's value exceeds cell A2's value. If so, the outcome is TRUE; otherwise, it is FALSE.Text Functions: If you work with data that contains text, the functions listed below will help you work more effectively.VLOOKUP function; Vertical Lookup is referred to as VLOOKUP. It is a function that instructs Excel to look in a column (the so-called "table array") for a specific value in order to retrieve a value from another column in the same row. You will learn how to use the VLOOKUP function from this tutorial.Date functions: One of the main components of data that you use every day is dates, which you may utilize to better evaluate your data.MATCH function; The relative location of a value is returned by the MATCH function after searching for it in a range of lineair cells.Time Functions: Time can appear in data just like dates do, and you can use time functions to work with data that contains time values.Logical Functions: You can use logical functions to build some of your spreadsheet's most useful formulas.Statistical Functions: One of Excel's best features is the abundance of statistical functions available for quick data analysis.Information Function: You can use these particular functions to learn more about the values you provided.Financial Functions: You may easily perform some of the common yet crucial financial calculations with these functions.To learn more about Function of ms excel, refer to:
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Which of the following is true of rods?
Multiple Choice
O
More numerous than cones.
Concentrated in the macula lutea.
Sensitive to wavelengths of light corresponding to colors of red, green, and blue.
Not helpful for night vision or in dim light.
Answer: A - Rods are more numerous than cones
Explanation: Rods are found everywhere in the retina except the fovea (a tiny pocket in the retina where just about all of the cones are located).
B. The macula lutea is another word for fovea, no rods are found there.
C. Rods are utilized in low-light conditions and are not sensitive to wavelengths of light.
D. Cones are responsible for perceiving color and not rods.
E. The main function of the rods is to help us see in low-light conditions (scotopic vision), so this answer would be incorrect.
Organisms can display explosive population growth called __________ when resources are abundant and there is no competition.
Which of the following
places is likely to have low
biodiversity?
OA. Great barrier reef
B. Man-made pine tree plantation
OC. Indian Ocean
OD. Amazon rainforest
Man made pine tree plantation is likely to have low biodiversity. Thus option B is correct .
What is biodiversity?Biodiversity is all the different kinds of life living in a particular area like the variety of animals, plants, fungi and microorganisms like bacteria and virus that plays a major role in framing of natural world usually three levels of biodiversity are observed and these are genetic species, and ecosystem diversity.
Biodiversity is very important for the process that's support all life present on earth including human.
Therefore, man made pine tree plantation is likely to have low biodiversity. Thus option B is correct .
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What is Osmosis.. Please define it and give some examples.
Answer:
Explanation:
osmosis is the movement of water molecules from the region of higher concentration to the region of lower concentration down the concentration gradient.
some of the examples are root hair cells as they absorb water molecules from the soil and are low in concentration compare to the soil. so osmosis takes place
Which of the following would NOT affect a baby's size?
A. Both parents are very small.
B. The father eats poorly during the pregnancy.
C. Mother smokes while pregnant.
D. The mother eats poorly during the pregnancy.
Reset Selection
Answer:
B
Explanation:
What the father eats would not affect the size of a baby
Internal capsule is part of which pathway,motor or sensory?
The Internal capsule is part of the motor pathway and is therefore denoted as option A.
What is Internal capsule?This is characterized by a a white matter which is located in the inferomedial part of both cerebral hemisphere of the brain. The brain serves as the control center of the central nervous system which comprises of a rich network of neurons interconnected together for prompt response to different types of stimuli.
The internal capsule however functions together with the pyramidal motor pathway during the processing of different types of stimuli and information hence it being chosen as the most appropriate choice.
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Which describes a transplant using healthy bone marrow cells from a compatible donor?
Answer:
Allogeneic transplants involve the use of cells from a donor.
If a design has a flaw, what is next logical step for the design team?
Modify the design.
Test the prototype.
Scrap the project.
dentify the need.
Putting a prescription on file allows the prescription to be filled electronically and a ) charges the insurance company , but doesn't fill the order . b ) charges the insurance company , but sends the filled prescription to the patient's physician . c ) charges the insurance company , fills the order , but holds it until needed . d ) doesn't charge the insurance company or fill the order .
Putting a prescription on file allows the prescription to be filled electronically and sets the insurance company , but sends the filled prescription to the patient's physician.
What is the process of filling a prescription?
The prescription fill process has five detailed steps. They include input & initial check, therapeutic check, preparation, technical review and supply and educate. These focus on an objective and precise prescription filling process that is safe and legal for both the client and the pharmacist.
What is the main advantage of an electronic prescription?
E-prescribing also helps to make patient care more efficient. It simplifies the process of getting the medication to the pharmacy, dispensing the medication, and getting refills. Because the patient is not given a hard copy of the medication, the possibility for losing the prescription is eliminated.
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write the functions of the modified stems give some examples to
Many plants have modified stems that serve various purposes, including storage, protection, photosynthesis, support, propagation, and perennial growth.
What are the functions of modified stems, and explain them with examples?Underground Stem Modifications:
These can be found underground, as their name suggests. They have a variety of uses, including food storage, reproduction, and perpetuation. By having nodes and internodes, they may be distinguished from roots. They support asexual reproduction and the plant's ability to endure a period of hibernation. They offer a defense against animal grazing and environmental stress.Rhizome: It runs parallel to the ground, and its lower portion, capable of producing adventitious roots, can also generate scaly leaves. They have internodes, buds, and nodes. Examples: Turmeric and ginger. The rootstock in bananas is a rhizome that develops vertically.Bulb: Modified bulbs are visible, and the stem is shortened and ringed with scale leaves. Examples: Tulips, Lilies, Daffodils, Onion, GarlicCorm: A short erect stalk with scaly leaves covers it. When compared to bulbs, it is tough. Examples: Colocasia, Yam, SaffronTuber: The fleshy, food-storing stem terminal is present in this instance. Nodes and internodes are present in the stem; however, they are not identifiable because of swelling. Scaly leaves present at nodes can be interpreted as eyes or scars. Examples: Potato, Artichokes.Many plants have modified stems that serve various purposes, including storage, protection, photosynthesis, support, propagation, and perennial growth.
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What type of infection caused the most deaths in 1999?
A. Measles
B. HIV/AIDS
C. Malaria
D. Respiratory infection
Respiratory infection caused the most deaths in 1999.
The proportion of respiratory samples that tested positive for influenza peaked during the 1999–2000 flu season at 33%, while the state and territorial epidemiologists' reports peaked at 44 states reporting either regional or widespread influenza activity. It was originally discovered in military soldiers in the US in the spring of 1918. One third of the world's population, or roughly 500 million people, are thought to have contracted this virus. The lungs, nose, and throat are affected by the flu. High-risk groups include young children, elderly individuals, pregnant women, persons with chronic illnesses, and those with weakened immune systems.learn more about Respiratory infection here: https://brainly.com/question/2526467
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Which are the main parts of a flowering plant? Select four options. seeds roots stem leaves flowers
Answer:
Flowers stem leaves roots.
Explanation:
The main parts of a flowering plant are flowers stem leaves root.
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Two individuals who are heterozygous for both genes in a dihybrid cross mate. What are the chances that their offspring will also be heterozygous for both genes? (Type answer as a decimal)
The probability that the offspring of the parents who are both heterozygous in a dihybrid cross are also heterozygous for both genes is 0.25
What is a dihybrid cross?A dihybrid cross is a cross in which two different traits are involved in the crossing.
For example, the trait for height and color of hair in two parents being crossed is a form of a dihybrid cross.
Assuming two two traits are Ss and Yy, where the dominant traits are S and Y and the recessive traits are s and y.
The two individuals are heterozygous for both genes means that their genotype are both SsYy.
The dihybrid cross is shown in the attached image;
Based on the attached image, the heterozygous offspring for both genes SsYy are 4 out of the possible 16 offspring.
The probability of offspring that are heterozygous for both genes = 4/16 = 0.25
In conclusion, in a dihybrid cross, two traits or genes are involved in the cross and a possible number of 16 offspring are produced from the cross.
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differentiate between alimentary canal and digestive system
Explanation:
The digestive system runs from the mouth, gullet, stomach, liver, pancreas, duodenum/upper small intestine, ileum/ lower small intestine, large intestine, appendix, rectum and anus. However the alimentary canal has all the above features except for the liver and pancreas
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Describe one or more of the scientific theories regarding the origin of life on the early Earth. Explain how RNA is important to this theory.
The RNA world is a hypothesis associated with the emergence of life on Earth and it is important because states that RNA had catalytic functions.
What is the RNA world?The RNA world is a scientific theory that states life began as primitive organisms in which the RNA played a dual function, i.e., as genetic material and as an enzyme.
The RNA world theory is sustained by the presence of ribozimes, i.e., enzymes composed of RNA instead of proteins.
In conclusion, the RNA world is a scientific hypothesis associated with the emergence of life on Earth and this theory is important because it states that RNA had catalytic functions.
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How does mitochondrial structure contribute to aerobic metabolism, particularly in the integration of the citric acid cycle and electron transport?.
The reduced electron carriers generated by the citric acid cycle are restricted to the matrix by mitochondrial structure. There, they are adjacent to the respiratory complexes of the electron transport chain, which will transfer the electrons from the carriers made by the TCA cycle to oxygen, the final recipient of electrons and hydrogens.
What is the role of mitochondria in the citric acid cycle and electron transport chain?
Citric Acid Cycle:
The pyruvate molecules generated at the conclusion of glycolysis are carried into mitochondria, which are locations of cellular respiration, in eukaryotic cells. By eliminating a carbon dioxide molecule in the mitochondria, pyruvate is converted into a two-carbon acetyl group, which is then taken up by the carrier substance coenzyme A. (CoA). The end product is known as acetyl CoA.
The citric acid cycle occurs in the matrix of the mitochondria in eukaryotic cells. The eight phases of the cycle are a sequence of chemical processes that result in the production of two molecules of carbon dioxide, one molecule of ATP, and the reduced versions of NAD+ and FAD+, known as NADH and FADH2, which are crucial coenzymes for cell function. Because the NADH and FADH2 generated must transport their electrons to the system's next pathway, which uses oxygen, part of this is regarded as an aerobic pathway. This transmission is not possible without oxygen.
Electron Transport Chain:
However, the majority of the ATP produced during the aerobic breakdown of glucose does not come from these mechanisms. Instead, it results from a procedure that starts with the transfer of electrons through a series of chemical events to an ultimate electron acceptor, oxygen. Both eukaryotic organisms' mitochondrial inner membranes and prokaryotic organisms' inner cell membranes contain specific protein complexes where these processes occur. A gradient of electrochemistry is produced across the inner mitochondrial membrane by harnessing the energy of the electrons. ATP is produced using the potential energy of this gradient. This entire procedure is known as oxidative phosphorylation.
The sole aspect of metabolism that employs ambient oxygen is the electron transport chain, which is the final stage of aerobic respiration. The electron transport chain is made up of the aggregation of the four protein complexes I through IV as well as any related mobile, accessory electron carriers.
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Give an example of a good hypothesis, and explain why a hypothesis is important.
Explanation:
it ensures the entire research methodologies are scientific and valid
Which best explains the relationship between flying dragons and trees?
a.
Flying dragons rely on trees for a food source, but not for shelter.
b.
Flying dragons live exclusively in trees except to lay eggs.
c.
Flying dragons burrow into the tree without causing damage to the tree.
d.
Flying dragons use trees for reproduction, but get their food and shelter on the ground.
Please select the best answer from the choices provided
A
B
C
D
Answer:
b.
b.Flying dragons live exclusively in trees except to lay eggs.
3. Compare the advantages and disadvantages of disposing of municipal solid waste in sanitary landfills and by incineration.
Lowers population of pest is the advantages of disposing of municipal solid waste in sanitary landfills whereas high cost and damage to health are the disadvantages of disposing of municipal solid waste in sanitary landfills
What are the advantages and disadvantages of disposing waste in sanitary landfills?The main advantage of disposing of municipal solid waste in sanitary landfills is that it minimizes pests such as rodents and insects that can carry many diseases. The disadvantage disposing of municipal solid waste in sanitary landfills is that it can be costly and can cause problems with a sanitary landfill is the environmental hazard.
So we can conclude that lowers population of pest is the advantages of disposing of municipal solid waste in sanitary landfills whereas high cost and damage to health are the disadvantages of disposing of municipal solid waste in sanitary landfills.
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Incineration has the advantage of reducing the volume of the final waste that should be disposed thereby helping in the process of waste disposal.
What is a landfill?A landfill is an area that has been set aside for the disposal of refuse. It is a large area that could consist of an open pit into which refuse could be poured from time to time.
Now, incineration has to do with the burning of waste materials. The sanitary landfills tend to protect the environment from the possible release of harmful fumes and carbon wastes. On the other hand, the disadvantage of the sanitary land fills is that there is the possibility of ground and surface water contamination by toxic materials.
Incineration has the advantage of reducing the volume of the final waste that should be disposed thereby helping in the process of waste disposal.
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The Montreal Protocol ________.
Answer:
The Montreal Protocol, finalized in 1987, is a global agreement to protect the stratospheric ozone layer by phasing out the production and consumption of ozone-depleting substances (ODS).