Answer:
To test a hypothesis
Explanation:
I took the test and got it correct.
Hope this helpped! ;)
Make one or more observations. Create a hypothesis that serves as a rough summary of what has been observed, and then build your forecasts on it. Test the theory and the predictions in a repeatable experiment. Thus, option B is correct.
What is main importance of scientific investigation?The two main objectives of scientific investigation are knowledge production and hypothesis development. Various people and settings are employed to conduct scientific research.
There are numerous methods for conducting scientific research, all of which rely on the collection of various types of data.
A plan for raising questions and putting potential solutions to the test is a scientific research. Observations are frequently the first step in a scientific research.
Observations are typically followed by questions. A hypothesis is a possible response to a scientific query based on the state of science today.
Therefore, to test a hypothesis is the main purpose of a scientific investigation.
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What does it mean to be living?
Answer:
life depends on many chemical and physical processes
that’s I pretty vauge question and I could have multiple answer I think being alive is simply not dying yet
our blood is able to maintain a ph of about 7.5 because our body acts like a buffer solution. regulating ph is crucial so that our protein structures remain intact and functional. which statement about human protein in the body is not correct
The given question is incomplete as the group of choices are missing, however, the group of choices are given as follows:
Select one
a. Protein consists partially of amine groups that are neutral as a result of protonation (of one H ion)
b.Protein contains deprotonated carboxylate groups, resulting in a negative charge
c. The carboxylate groups in protein act very much like carboxylic acid groups (-COOH), except that they are deprotonated
d. If the human body did not act like a buffer solution, each time you ingested an acid the carboxylate groups would protonate, causing the protein structure to disintegrate.
Answer:
The correct answer (incorrect statement) is : option C.
Explanation:
pH of blood should be remain 7.5 in order to make proteins of the body and blood intact and functional. Human protein have neutral amine group due to the protonation and negative carboxylate group due to the deprotonation.
carboxyl group behave like an acid and carboxylate group behave like a base due to the fact that Carboxylate group (-COO-) is conjugate base of Carboxyl group. Human body acts like buffer to prevent the protein from disintegrate.
Thus, the correct answer is : option c.
A period in 24-point font (.) is about 1mm in diameter. SARS-CoV-2 has a diameter of 80 nm. The prefix “milli” means 1000, which tells you there are 1000 millimeters (mm) in a meter. The prefix “nano” means 109 (1 billion), which tells you there are 1 billion nanometers (nm) in a meter. Approximately how many SARS-CoV-2 viruses could fit in that period? (Hint: There are 106 nm in 1mm).
Answer:
A total of 12,500 SARS-CoV-2 viruses
Explanation:
Consider a trillion against a thousand, there exists a difference of a million, which means a nanometer will be a million times smaller as compared to one millimeter:
see below for a milli divided by nano
1/1000 ÷ 1/1000,000,000 = 1000,000,000 ÷ 1000 = 1000,000
(in reference to the hint given in the question statement)
The question puts one millimeter against 80 nanometers. The calculation for this will be given as follows:
1/1000 ÷ 80/1000,000,000 = 1000,000,000 ÷ 80,000 = 12,500
According to the above working, there are 12,500 SARS-Cov-2 viruses thatg can fit into one period.
How do environmental scientists use technology to track gray wolves ?
Answer:
by using GPS labels
Explanation:
Different sensing technologies are nowadays used to track animal movement. In particular, terrestrial animal sensing technologies include, among others, Global Positioning System (GPS), radio telemetry, acoustic telemetry, environmental sensors, automated data-retrieval, etc. These technologies allow us to learn more about animal behavior and provide useful information for ecological/environmental researchers. In the case of GPS, satellite networks can be used to track migratory patterns.
Which of the following most accurately represents the various feeding relationships within an ecosystem?
A. A feeding diagram
B. A food web
C. A food chain
D. A biomass pyramid
How do paleontologist use known evidence to make their observations? What are 2 of their observations
Answer:
Explanation:
Paleontologists are scientists that use fossil records to study the history of life on earth. They use known evidence/fossils such as bones, prints (on land or sea), dead remains to determine evidence and history of past life on earth.
Some of there observations include the use of comparative anatomy to determine possible evolution. They also use carbon dating to determine approximately how long a fossil/bone has been in existence.
8th Grade Science question I’m in a hurryyy
2. The organic substance obtained from dead plants and animal waste is
(a) Manure
(b) Fertilizer
(c) Irrigation
(d) Agriculture
Answer:
A. Manure
Explanation:
Manure is an organic substance obtained from dead plant. It is rich in nutrients. Manures are organic substance that are obtained by the decomposition of dead plants and animal substances. Compost mainly consists of dead plants and animal substances mixed with soil in a pit
Answer:
B) Fertilizer
Explanation: It is fertilizer because the dead plants and animal waste is broken down naturally by a certain decomposer such as fungi and bacteria for example.
Vibrio fischeri are bioluminescent when the population reaches a certain size. This is an example of
Answer: quorom sensing
Explanation:
Vibrio fischeri are bioluminescent when the population reaches a certain size. This is an example of quorom sensing.
Quorum sensing is simply defined as ability to be able to detect and also respond to population density of cells as a result of gene regulation. It allows information relating to cell density to be shared by bacteria about and also help in adjustment of gene expression. accordingly.
List the 6 possible genotypes of the four blood types. Identify the parentalgenotypes that could produce children with blood type AO.
Answer:
The different possible genotypes are AA, AO, BB, BO, AB, and OO. These are derived according to the A, B and O blood group model.
The table is given below:
Blood Type Genotype
Blood Type A Genotypes AA or AO
Blood Type B Genotypes BB or BO
Blood Type AB Genotype AB
Blood Type O Genotype OO
The alleles A and B exhibit a greater dominance than O. This is the reason why the Parent of Blood type A will form the Genotype AO.
Jerome is writing a paper about animal cell parts and organ systems that have similar functions. Which statement about the
similarity between a cell's membrane and the integumentary system could Jerome include in his paper?
please help
Answer:
They both provide protection for other structures.
Explanation:
Which of the following hormones increases the heart rate in response to stress?
a. Glutamate
b. Epinephrine
c. Testosterone
d. Insulin
Answer:
Epinephrine is another name for Adrenaline
Explanation:
Adrenaline is a hormone that increases your heart rate in response to stress.
True or False After the lac repressor attaches, DNA polymerase is able to transcribe the genes of the lac operon.
Answer:f
Explanation:
Which of the following is one of the seven basic characteristics used to classify living things?a. possession or lack of lysosomes.b. the presence or absence of hair.c. presence or absence of four limbs.d. ability or inability to do photosynthesis.e. the presence or absence of yellow pigment.
Answer:
D.ability or inability to do photosynthesis
Explanation:
Because feeding is one of the features of living things and green plants feed by photosynthesis which is the process where by they convert light energy to chemical energy in the presence of chlorophyll
Answer:
D
Explanation:
Classification in living things can be done using different factors, the system of classifying living thing scientifically is called taxonomy.
The ability of an organism to photosynthesize is one of the main characteristics of classifying.
All green plants, some bacteria and Algae that has chlorophyll content photosynthesize to produce their own food, this makes them less dependent but a primary producer.
This ability to is used to differentiate between photosynthetic organisms and non photosynthetic organisms and also help classify living organism
Between 1957 and 1961, thousands of expectant women in 30 different nations ingested a common antinausea drug of the time known as thalidomide. A study of _______________ found that if the thalidomide was ingested only after day 54, then no harm occurred to the fetus, but if ingested prior to day 54 the fetus could be born with malformed or absent limbs.
Answer:
A study of those newborn babies
Explanation:
Studying the infants from these pregnant women lead the researchers to find out that this drug interfered with the process of limb formation if the pregnant woman had taken this drug anytime during the 26 days critical for limb formation and development. In this way, it makes for an instance where nurture had disrupted nature.
Proper insertion of the needle into the cricothyroid membrane involves a ___ angle toward the ________.
Answer:
The correct answer is "45 degrees; feet".
Explanation:
The cricothyroid membrane, also known as the cricothyroid ligament, is comprised of a yellow elastic tissue attached to the cricoid cartilage. One of the most common treatments for vocal nodules involves the injection of the cricothyroid membrane with local steroids. Proper injection of this area involves inserting the needle in a 45 degrees angle toward the feet. This helps to avoid the blood vessels located in the surroundings.
What evidence indicates that a chemical change took place when the iron and sulfur combined to form iron sulfide?
A. The change is only temporary.
B. The elements can be separated with a magnet.
C. The change resulted in a new property.
OD. During the change, gases are released.
Answer:
C-The change resulted in a new property.
Explanation:
Label the membranes in the transverse section through the thorax.
Answer:
Please see below
Explanation:
A transverse section of the thorax has been attached as an image herein.
The thorax is essentially the chest area of the organism's body. Inside the thoracic cavity, the serous membranes (known as pleurae) are responsible for separating the lungs from the boundary of the thorax. Visceral pleura is present on the external side of the lungs. The parietal pleura is present on the inner side of the thoracic cavity and the diaphragm. In between the 2 pleurae, there is a lining of serous fluid present.
You have formulated a hypothesis: "Mangos contain more vitamin C than oranges." To test your hypothesis you measure vitamin C levels in 20 oranges and 20 mangos from trees that were grown in the same orchard under the same environmental conditions (temperature, rain, sunlight). What is the independent variable in this experiment?
Question options:
A) The amount of rain and sunlight the trees received
B) Vitamin C levels
C) The type of fruit
D) The type of soil the trees grew in
Answer:
B) the type of fruit
Explanation:
The independent variable is the value that the experimenter changes/controls. The Vitamin C levels depend on the type of fruit, so the fruit is the independent variable. Hope this helps!
The value that the experiment modifies or controls is known as the independent variable. Fruit is the independent variable because fruit types vary in their quantities of vitamin C. Thus, option B is correct.
What is the independent variable?“X” is frequently used to indicate an independent variable. It is a variable that is independent of other variables.
The elements or circumstances that you can change in an experiment are referred to as independent variables. A dependent variable's value may be directly impacted by this variable.
The definition of an independent variable is exactly what it says. It is a stand-alone variable that is unaffected by the other variables you are attempting to assess. Age, for instance, could be an independent variable.
Anticipated to have an impact on the dependent variable. The experiment has no effect on this. It is a variable that can be altered by researchers to examine the independent variable.
Therefore, fruit is the independent variable, to vary in their quantities of vitamin C.
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Hypothesize about human impact on each of Earth’s systems. Geosphere: Hydrosphere: Atmosphere: Biosphere:
Answer: the answer is biosphere I’m not sure correct me if I’m wrong
Explanation:
what gas is on the reactant side of photosynthesis
Answer:
The oxygen gas
Which of these contains four hydrogen atoms?
CH3OH
H2O
H2O2
HCl
Answer:
CH3OH contains four hydrogen atoms
Which of the following factors cause variations in seawater density, leading to ocean currents? 1- Sun's gravity 2- Wind 3- Moon's gravity 4- Temperature and salinity
Temperature and salinity
Answer: Temperature and Salinity
Explanation:
Temperature and salinity both contribute to variations in seawater density. Variations in seawater density cause currents to start flowing from low-density regions to high-density regions.
When is it okay for a client to become intimately involved with their trainer? A. If both parties consent to it B. Never C. If the trainer's manager knows about it D. Always and involves momentum
Answer:
B. Never
Explanation:
Personal trainers (PT) are individuals hired to improve the fitness (mostly by exercise or dieting) of another person, known as the client. Not only do personal trainers possess the skills and knowledge to go about their jobs, they are also certified, hence, making them professionals at what they do.
Series of conversations, sometimes personal can occur between the PT and the client in order to extract information needed to successfully help the client. However, a personal trainer is mandated to be PROFESSIONAL while performing this role. One of the professional ethics of the job is that personal trainers are NEVER to get into any intimate relationship with their clients. This is a serious offence that can cost a trainer not only his/her job but also professional license.
Answer:
never
Explanation:
What statement is true all living organism? A-they shrink and divide B-They develop but don't grow C-They grow but don't develop D-They grow and develop
Answer:they grow and develop if I remember correctly so I would say d
Explanation:all living organisms like and thrive in different environments and it’s in an organisms in nature to survive and reproduce
does the chalazae serves to anchor the egg yolk to the albumin?
Answer:
Ropy twisted strands of albumen
Anchor yolk to center of thick egg white
Explanation:
Which is not a source of funding for scientific research?
A. Government agencies
B. Scientific meetings
C. Private foundations
D. Emerging industries
Answer: Option D.
Emerging industries
Explanation:
Emerging industries is not a source of funding scientific research because the industries have not sustain the financial capability and stability to release funds or fund scientific research because they are still growing and they are not yet established and durable financially.
The emerging industries have to be well established and make alot of financial profits before they can find scientific researches.
Which of the following correctly pairs the macromolecule with its monomer?
A. protein- monosaccharide
B. Lipids- Fatty acid
C. carbohydrate- amion acid
D. nucleic acid- amino acid
Answer:
The correct answer is : option B. lipids - fatty acid.
Explanation:
Fatty acid and glycerol are the building blocks or monomers of the lipids, lipids itself is a building block that make a cell structure and cell function. These are acts as component for cell membrane, helps in signalling and storehouse for energy.
Amino acids are monomer of protein molecule, monosaccharides for carbohydrate and nucleotide are monomer of nucleic acid.
Thus, the correct answer is : option B.
The branch of science which deals with a living being is called biology.
The correct option is B.
There are 4 types of biomolecules present in the cell, these are as follows:-
CarbohydratesProteinLipidsInorganic saltAll these polymers are made up of monomers. The repetitive attachment of the monomer will join together to form a polymer.
The monomers are as follows:-
Protein -- amino acidCarbohydrates- sugarNucleic acid - NucleotideLipid - fatty acidsHence, the correct option is B that is Lipids- Fatty acid.
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What adaptations would a plant species need to encounter the effects of an herbivorous insect and what adaptations would the insect need to counter those defenses?
Answer:
The plant defense system incorporates waxy cuticles or bark that are impenetrable in order to protect from insects. They can create complex polymers that lower the plant absorbability to creatures; and poisons that can kill herbivores and insects. Furthermore, plants produce hard shells, and spines (changed leaves), and thorns to shield themselves from herbivores.
Herbivores then again have built up a various scope of physical structures to encourage the utilization of plant material. They have created teeth structures to penetrate or break plant tissues and that mirror their taking care of inclinations. They can create proteins, for example, oxidases (MFOs) and protease that counter and diminish the adequacy of various harmful auxiliary metabolites delivered by plants. They can maintain a strategic distance from plant protections by eating plants specifically in reality.
where do most living things get the energy they need for life
Answer:The Sun
Explanation:The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.
Answer:
The Sun is the major source of energy for organisms and the ecosystems of which they are apart. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs
Explanation:
I hope this helps you!!