The statement which is true about the scientific method is that "it is important to follow each step in order so the results are valid." Thus, the correct option is C.
What is the Scientific method?The scientific method may be characterized as an approach to investigation in which a problem is determined, appropriate data are collected, an assumption is composed of these data, and the hypothesis has been empirically experimented with.
Scientific methods always deal with a scripted format of identifying the problem, making a hypothesis, collecting the data associated with a hypothesis, synthesizing a methodology, observing it, and making a conclusion.
Therefore, the correct option for this question is C.
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Identify the type of chromosomal disorder described below.
Blank is known as trisomy 21 and impacts brain and body development.
Blank predominantly affects males and their fertility.
Blank predominantly affects females and can impact their growth.
Answer:
Down Syndrome
Klinefelter syndrome
Turner syndrome
Explanation:
1. Which of the following is true about eating?
Calcium is not very important.
It is not important to eat before you exercise.
Carbohydrates are not good for you.
It's important to eat the right kinds of food before you exercise.
Answer:
It's important to eat the right kinds of food before you exercise.
Explanation:
Since:
-Carbs help fuel your brain, kidneys, heart muscles, and central nervous system.
-Eating or drinking before exercise can improve workout performance and may allow you to work out for a longer time or at a higher intensity. If you don't eat, you might feel sluggish or lightheaded when you exercise.
-Calcium is a mineral most often associated with healthy bones and teeth, although it also plays an important role in blood clotting, helping muscles to contract, and regulating normal heart rhythms and nerve functions.
all the other options are false
therefore your answer is D
hope this helps:)
Identify the hormone represented by each letter
Identify the hormone represented by each letter, in this case, the letter A represents the thyroid glands and letter B represents the parathyroid gland.
What does the thyroid do?The thyroid is a butterfly-shaped gland that is located in the anterior part of the neck, hugging the windpipe. The hormones produced by it act on our body and metabolism from our fetal formation to senility.
What is the function of the parathyroid?
The parathyroids are four glands located in the neck, behind the thyroid, whose function is to control the levels of calcium in the blood through the production of parathyroid hormone (PTH).
These two organs have essential functions for the human body responsible for metabolism.
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The _____________ is composed of a vast system of microscopic tubules that communicate directly with the capillaries to filter the blood.
The glomerulus is composed of a vast system of microscopic tubules that communicate directly with the capillaries to filter the blood.
What are functions of glomerulus?The glomerulus is the network of small capillary blood vessels which is found embedded within the bowman's capsule of the kidney.
The functions of glomerulus include the filtration of blood to remove the following:
wastesdrugs andexcess water.Therefore, the glomerulus is composed of a vast system of microscopic tubules that communicate directly with the capillaries to filter the blood.
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for patients with prediabetes, what strategies does the diabetes prevention program show are effective in reducing the risk of progressing to type 2 diabetes?
Lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progression of prediabetes to type 2 diabetes.
What is diabetes?Diabetes is a disease in which the body is unable to utilize glucose in the body efficiently.
Patients who are prediabetic are at risk of developing diabetes.
However, the diabetes prevention program shows that lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progressing to type 2 diabetes.
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Answer:
it is D
Explanation:
got it right edge 2022
3. what is an ecosystem?
o a group of animals of all the same species in an area
a group of living and nonliving things
the process for converting energy into food
the relationship between plants and animals
Answer:
A group of animals of all the same species in an area.
Explanation:
Which attribute has the potential to influence future thoughts, actions, and human endeavors?
Creativity is an attribute of a person with the potential to influence future thoughts, actions, and human endeavors.
What is creativity?Creativity can be defined as an attribute of a person that involves the use of thought processes and actions, so as to generate original ideas that proffers a unique solution to a specific problem.
This ultimately implies that, creativity is an attribute of a person with the potential to influence future thoughts, actions, and human endeavors.
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How do mutations affect evolution?
Answer:
Mutations affect evolution by increasing genetic variation and the potential for individuals to differ.
What are the structures and functions of the tissues lining the respiratory organs?
What is the function of water on the inner surfaces of alveoli?
What is the function of surfactant on the inner surfaces of alveoli?
What are the microscopic structures within the lungs?
What important information did you learn about from this video?
Answer:
1-The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.
2-The fluid represents the outermost layer of the alveolar surface that is directly exposed to air and thus to the environment. Alveolar fluid prevents desiccation of the epithelial cells and also functions as a physical protection barrier against inhaled particles and irritants.
3-The main function of surfactant is to lower the surface tension at the air/liquid interface within the alveoli of the lung. This is needed to lower the work of breathing and to prevent alveolar collapse at end-expiration.
4-The trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called bronchi. The bronchi then divide into smaller and smaller branches (bronchioles), finally becoming microscopic. The bronchioles eventually end in clusters of microscopic air sacs called alveoli.
5- i havent seen the video then how can i answer q5
Which of the following species of fish have cartilaginous skeletons?
The Big Bang theory states that _____.
Answer:
The big bang theory is states that universe began as just a single point, then expanded and stretched to grow as large as it is right now.
Hope this helps........
What is the most common body type ectomorph endomorph mesomorph?.
Nowadays, endomorph is the most common body type. Thus, the correct option is B.
What is Body type?Body type may be defined as the posture or composition of body structure. It is used for the classification of human body shapes according to their appearance.
Endomorph body type represents the body that has more stored fats, and a lot of muscles that gain weight more easily. Nowadays, the situation remains the same and people are more prone to reach circumstances of obesity.
Therefore, it is well described above.
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What is the role of the eukaryotic promoter in transcription?.
Answer:
The purpose of the eukaryotic promoter is to bind transcription factors that control the initiation of transcription.
The promoter region can be short or quite long; the longer the promoter is, the more available space for proteins to bind
Alan lives in an area that has a huge park. Moreover, there is good quality of air and water in his region. What is the possible consequence of such conditions?
A.
premature deaths
B.
asthma
C.
cardiovascular diseases
D.
high life expectancy
Answer:
D. High Life Expectancy
Explanation:
Air pollution lowers life expectancy and causes tons of premature deaths in areas. The area that Alan lives in has good air quality which means that there is obviously going to be a increase in life expectancy. If water quality is bad in an area it can cause chronic illnesses (such as cancer), gastrointestinal illnesses, and even effect the nervous and reproductive systems in a bad way. So the fact there is good water quality in the region the area Alan lives in, he is pretty much guaranteed for higher life expectancy. Therefore the best answer is Option D.
4 which two biomolecules are most often
analyzed to establish homologies between
different species?
Answer:
DNA and protein
Explanation:
two biomolecules are most often
analyzed to establish homologies between
different species are DNA and proteins
How many pressure points are in your arm?- don't answer if you don't want notifications-
Answer:
In acupressure, pressure points are thought to be powerfully sensitive parts of the body. Some people believe that by applying pressure to our body’s pressure points, it can help relieve pain, establish balance, and improve health throughout the body.
Explanation:
What is the main function of fungus’s hyphae?
Absorption of nutrients
Movement in water
Predator protection
Photosynthesis
The main function of fungus’s hyphae is the Absorption of nutrients by the fluttery filaments that make up multicellular fungi are called hyphae. As they consume resources from a food source, they release enzymes.
What are the fungal hyphae?The fluttery filaments that make up multicellular fungi are called hyphae. As they consume resources from a food source, they release enzymes. Chitin makes up the rigid cell wall of hyphae. In pursuit of more food sources, they spread out from a tip and continue to expand.
The substrate is broken down by digestive enzymes secreted by the hyphae, which makes it simpler for the fungus to absorb the nutrients it contains. The fungus has a very wide surface area compared to its volume, which indicates that it is in close contact with its surroundings.
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Answer: it’s A
Explanation: truss it is
What provides the carbon atoms that are incorporated into sugar molecules in the calvin cycle?.
The answer of this query is discussed below:
What do you mean by the Calvin cycle?The Calvin cycle converts airborne carbon molecules directly into plant material. Because plants are the foundation of the energy pyramid in most ecosystems, the Calvin cycle is crucial to their survival.
The carbon atoms needed for photosynthesis to create sugars are found in carbon dioxide. RuBP is initially combined with carbon dioxide, and RuBP is then renewed to complete the Calvin cycle.
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What happens to the groom ones levels during ovulation?
The BBT is the temperature at which females are the coolest in a 24-hour period. BBT will increase by 0.5 to 1.0 degree Fahrenheit the day after she ovulate and remain elevated until her next period.
What is ovulation?When you ovulate, one of your ovaries releases an egg. You are theoretically fertile for five days prior to ovulation and the day of ovulation. However, if you have se-x during the final three days of this six-day window, your chances of becoming pregnant are at their highest.
The vaginal discharge that occasionally shows up in underwear is cervical mucus. She can experience an increase in cervical mucus and a change in its texture in the days leading up to and right after ovulation.
The cervix is softer, higher, moister, and more open during ovulation.
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what are the components of the CNS ?
The components of the CNS are the brain and spinal cord.
What is the most important part of the nervous system?It is the most important organ of the nervous system. Considered the most voluminous organ, as it occupies most of the brain, the brain is divided into two symmetrical parts: the right hemisphere and the left hemisphere.
The central nervous system is made up of two basic parts: the brain and the spinal cord. The brain is contained within the braincase, and the spinal cord is contained within the vertebral column, in the vertebral canal.
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Four different thermometers were used to measure the temperature of a sample of impure boiling water. The measurements are recorded in the table below.
Thermometer Temperature
Reading 1 Temperature
Reading 2 Temperature
Reading 3
W 100.1°C 99.9°C 96.9°C
X 100.4°C 102.3°C 101.4°C
Y 90.0°C 95.2°C 98.6°C
Z 90.8°C 90.6°C 90.7°C
The actual boiling point of pure water is 100.0°C.
What can be concluded from the data about the reliability and validity of the thermometers?
A.
Thermometer W is the most reliable.
B.
Thermometer X has the highest validity.
C.
Thermometer Z is the most reliable.
D.
Thermometer Y has the highest validity.
Reliability is another name for the precision of the measurement, and it means how well the value is repeated; this is, how close the different measurements are to each other. If the measurements are close one to each other, then the instrument is precise or reliable (high reliability).
Validity is another name for the accuracy of the measurement; this is, how close the measurement is to the true or accepted value.
With that, we can compare the reliability (precision) and validity (accuracy) of the four different thermometers.
Repeat the table:
Temperatures in °C:
Thermometer Reading 1 Reading 2 Reading 3
W 100.1 99.9 96.9
X 100.4 102.3 101.4
Y 90.0 95.2 98.6
Z 90.8 90.6 90.7
Reliability:
To analyze reliability (precision) we must compare the measures of every thermometer among them. A good approximation can be made calculating the range, i.e. the difference between the largest and the smallest readings:
For W: largest reading - smallest reading = 100.1°C - 96.9°C = 3.2°CFor X: largest reading - smallest reading = 102.3°C - 100.4°C = 1.9°CFor Y: largest reading - smallest reading = 98.6°C - 90.0°C = 8.6°CFor Z: largest reading - smallest reading = 90.8°C - 90.6°C = 0.2°CNow, you conclude that the most reliable is thermometer Z and the least reliable is thermometer Y. The complete ranking, from most reliable to least reliable is:
Z > X > W > Y
Validity:
To determine validity you must compare the mean of the three measures for each thermometer with the accepted value for the boiling point of pure water (100.0°C).
The mean is the sum of the three readings divided by 3.
The absolute error is calculated with the formula:
absolute error = | accepted value - calculated value |.
The calculated value is the mean.
For W: mean = (100.1 + 99.9 + 96.9)°C / 3 = 99.0°C
absolute error = 100.0°C - 99.0°C = 1.0°C
For X: mean = (100.4 + 102.3 + 101.4)°C / 3 = 101.4 °C
absolute error = 101.4°C - 100.0°C = 1.4° For Y: mean = (90.0 + 95.2 + 98.6)°C / 3 = 94.6°C
absolute error = 100.0°C - 94.6°C = 5.4°C
For Z: mean = (90.8 + 90.6 + 90.7)°C / 3 = 90.7°C
absolute error = 100.0°C - 90.7°C = 9.3°C
Now you can rank the thermometers as per their validity (accuracy):
1.0°C < 1.4°C < 5.4°C < 9.3°C
Thus, W is the most accurate, X is the second most accurate, Y is the third, and Z is the least accurate.
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Classify each substance based on the intermolecular forces present in that substance.
The classification of the given substances can be H2O have hydrogen bond, CH4 have Dipole-dipole interaction, CH3Cl has dipole–dipole and dispersion only.
What are intramolecular forces?An intermolecular force (IMF) (or secondary force) is the force that mediates the interaction of molecules, including electromagnetic forces of attraction or repulsion that act between atoms and other types of neighboring particles, such as atoms or ions.
The complete question is:
Classify each substance based on the intermolecular forces present in that substance. Hydrogen bonding, dipole–dipole, and dispersion Dipole–dipole and dispersion only Dispersion only.
H20CH4COCH3ClThe classification of the given substances can be H2O have hydrogen bond, CH4 have Dipole-dipole interaction, CH3Cl has dipole–dipole and dispersion only.
Thus, this can be the possible classification for the given scenario.
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Please help!!! Thank you!!!!
Answer:
natural selection ; homologous
The population of birds with large beaks will increase on the island (1st listed) ; The trait for large beaks will be passed on to future generations through natural selection. (3rd listed)
B) 80 /200
Explanation:
Giraffes evolved over many generations to have long necks. Giraffes that had longer necks were more likely to survive than giraffes with shorter necks because they had better access to food. This is an example of natural selection / survival of the fittest.
(the "fittest" [most beneficial/practical] trait is surviving and getting "selected" by nature)
Giraffes are also vertebrates, like humans. In fact, despite their different neck sizes, humans and giraffes have exactly seven vertebrae bones in their neck. This similarity suggests human and giraffe necks are homologous [structures]
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...' What are two ways the decrease in seed availability will affect the population of birds on the island?'
The population of birds with large beaks will increase on the island.
[This is the concept of natural selection / survival of the fittest, they have the most abundant resource [because they are able to eat what is abundant on the island, compared to smaller birds that have a larger decrease in food availability] ]
The trait for large beaks will be passed on to future generations through natural selection.
[If these birds / and this trait survive, they will be able to have offspring [future generations]. Birds with a low survival percentage will be less successful in mating, and will likely not produce the same quantity of offspring that will carry on their traits to future generations.]
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frequency of an allele:
population: 100
frequency recessive [homozygous bc 2 same recessive alleles]: 25 (tt)
frequency dominant homozygous: 45 (TT)
frequency heterozygous dominant: 30 (Tt)
total alleles: 100 [our population] times 2
100 · 2 = 200
total alleles: 200
number of times we have [dominant] T:
30 from each heterozygous dominant (Tt)
2 · 45 (TT has two T's) = 90 from homozygous dominant
30 + 90 = 120
number of times we have [recessive] t :
30 from each heterozygous dominant (Tt)
2 · 25 (tt has two t's) = 50 from each homozygous recessive
30 + 50 = 80
So, we know that the frequency of recessive allele [t] is 80 / 200
[80 out of 200]
So, option B) 80 / 200 is correct
(this = 0.4)
(and dominant [T] is 120 / 200; I say this to show that recessive frequency and dominant frequency are calculated the same way!!)
(this = 0.6)
hope this helps!! (this took me a long time to write so please do read it thoroughly!!)
Answer:
your answer was so worth waiting!!!!!
Explanation:
What embyonic germ layer gives rise to muscle?
The mesoderm is one of the embryonic layers together with the ectoderm and endoderm. The germ layer that gives rise to muscle is the mesoderm.
What is the mesoderm?Three embryonic layers are present in the blastoderm after segmentation. One of them is the mesoderm, which is located between the ectoderm and the endoderm.
Different tissues and cells are formed from the mesoderm, such as muscular, skeletal, circulatory, and connective tissues.
The correct anwer is mesoderm. The embyonic germ layer that gives rise to muscle is the mesoderm.
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How is the law of conservation of mass applied to ecology?
In ecology, the law of conservation of mass is applied by the principle of taking energy from the lower trophic levels and passing it to the higher trophic level by any means.
What is the law of conservation of mass?The law of conservation of mass states that the actual mass in an ecosystem is neither created nor destroyed. Overall remains constant in a system.
In ecology, it illustrates that when an organism is ingested by other organisms, its mass is conserved. Some of the organisms may also be dependent on the waste products like urine and feces to make proteins and other compounds.
Therefore, the energy or mass is neither lost in any form. It simply is taken by other organisms through any means.
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A scientist discovers an unknown multicellular organism with an endoskeleton.
Which kingdom does the organism most likely belong to?
Protista
Plantae
Animalia
Archaea
The unknown multicellular organism with an endoskeleton most likely belongs to the kingdom Animalia. Thus, the correct option is C.
What is Kingdom?Kingdom may be defined as a taxonomic classification of the second-highest rank, just below the domain and above the phylum.
Endoskeleton is found in the kingdom Animalia and refers to the skeletons which are present inside the body of the organisms that provide structural support and protection and assist them in migration.
Therefore, the correct option is C.
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Which of these describes
nucleic acids?
A. Nucleic acids are necessary for life.
B. Nucleic acids are a type of fat.
C. Nucleic acids are only in non-living
things.
Answer:
A) Nucleic acids are necessary for life as they store genetic information in the form of DNA. Hope it helps!
Nucleic acids are the substances that are necessary for life. The correct option is A.
What are nucleic acids?Biopolymers and macromolecules called nucleic acids are necessary for all known species of life.
They are constructed of subunits called nucleotides, which are composed of a nitrogenous base, a phosphate group, and a 5-carbon sugar. Deoxyribonucleic acid and ribonucleic acid are the two primary classes of nucleic acids.
Natural chemical substances called nucleic acids are the main information-transporting molecules in organisms. They are particularly crucial in controlling protein synthesis. Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are the two primary types of nucleic acids.
The preservation and expression of genetic data is a key role of nucleic acids. The information cells require to build proteins is encoded in deoxyribonucleic acid, or DNA.
Thus, the correct option is A.
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What is the overall net gain of atp in aerobic respiration per one molecule of glucose?.
Answer:
38 ATP MOLECULES
Explanation:
Answer:
The answer is C.) between 30-40
Explanation:
Design a laboratory-based experiment to test the hypothesis that algae need light to grow.
The same algae is subjected to conditions in which one is exposed to light and another is not exposed to light while the nutrients in the both systems are kept the same.
What is algae growth?The growth of algae is the process by which the organism increases in size. Now we know that that the algae is photosynthetic hence light must be required for its growth.
In order to verify this, the same algae is subjected to conditions in which one is exposed to light and another is not exposed to light while the nutrients in the both systems are kept the same.
The results of this experiment must confirm that the algae exposed to light grows better than the algae that was not exposed to light.
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the binomial effect size display is a method for illustrating the size of:
The binomial effect size display is a method for illustrating the size of: correlation coefficients.
What are correlation coefficients?This is a term that has to do with the linear interdependence that exists between sets of data.
This helps to measure the existing strength between the various variables that are used in a regression analysis.
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