Original signed consent documents include provisions for recontacting subjects it is appropriate to re-contact the individuals who provided biological specimens.
A biological specimen, also known as a biospecimen, is a laboratory specimen used in biology that is kept by a biorepository for research. A sample of such a specimen would be taken from the specimen's source in order to make it representative of all other samples taken from the same source. For research purposes, it is preferable for biological specimens to be preserved so that they maintain their comparability to newly-collected specimens.
Blood, urine, saliva, and a variety of other biological specimens (or biospecimens) are taken from patients as part of routine patient monitoring and care as well as for use in basic, clinical, and epidemiologic research investigations.
learn more about biological specimens here:
https://brainly.com/question/7458550
#SPJ4
If a hypothesis that you test is not supported by the result of your experiment was your investigation there for a future explain
It signifies that, to a best of knowledge, the hypothesis is false since there is a lack of adequate objective facts to support it.
Hypothesis- Professionals frequently express hypotheses in if/then statements, e.g., if someone consumes a lot more sweets, then they will have cavities through their teeth. These claims list particular factors and make predictions about the outcomes. In this instance, the sugar content is the variable, and cavities are the outcome.
How to Write a Research Hypothesis
1. How to Write a Research Hypothesis
2. Avoid using unnecessary words and keep it simple.
3. Without any ambiguity or presumptions of the readers' expertise, it is clear.
4. Measurable outcomes that can be tested.
5. Relevant and pertinent to the study subject or issue.
To know more about the Hypothesis, click on the below link,
https://brainly.com/question/896413
#SPJ1
How the air pollution affect the geosphere?
Answer: The acid weather the rock away
Explanation: Air pollution have sulfur and carbon which react with water and becomes acid rain.
What’s the correct answer answer asap for brainlist
Answer:
capillaries
Explanation:
These are thin web connected vessels across the body
layers of sand and other sediments that become sedimentary rock can contain
The particles which forms sedimentary rocks usually contains calcite or quartz.
Understanding the composition of sedimentary rocks.The composition of a substance are what the substance is made up of. Within the context of this question, before the sedimentary rocks are formed, the layers of the its constituents which when subjected to high temperature and forms sedimentary rock contains a substance known as quartz. This quartz is also known as the siliciclastic rocks.
However, the layers or substance or particles which forms sedimentary rocks also contains the carbonate rocks also known as calcite.
There are three major types of rocks:
Igneous rock: It is formed by the cooling of molten rock, either below the surface (intrusive) or on the surface (extrusive).Metamorphic rock: It consists of pre-existing rock mass in which new minerals are formed at higher temperatures and greater pressures.Sedimentary rocks: It is formed by the deposition of either the weathered remains of other rocks, the results of biological activity, or precipitation from solution.So therefore, the constituents which makes up sedimentary rocks contains calcite and quartz.
Read more on rocks:
https://brainly.com/question/25846908
#SPJ1
Answer:
can contain the remains of plants, animals, or both.
Explanation:
i did it for study island, your welcome
Predict the outcome when two elements are chemically combined? (HS-LSI-1) DOK 2
The outcome when two elements are chemically combined is a compound and is based on different types of bonds.
What is a Compound?This is referred to as a substance which is formed as a result of the combination of two or more elements through the various types of bonding.
An element needs to achieve a stable octet configuration which is why they donate or accept electrons. An example of a compound is Sodium chloride which is formed from the reaction between Sodium and chlorine in which Sodium donates one electron to chlorine which accepts it and forms the compound named above.
Read more about Compound here https://brainly.com/question/26487468
#SPJ1
Tell two things that “wearing gloves” or having “taped fingers” might represent in a real enzyme reaction.
The expression “wearing gloves” and “taped fingers” might represent in a real enzyme reaction because the active site of enzymes can adopt these shapes during substrate binding.
What is the enzyme's active site?The enzyme's active site is a domain in the enzyme that binds to the substrate in order to convert it into one or more products during an enzymatic reaction. The enzyme's active site can adopt the form of fingers in zinc finger domain enzymes.
Therefore, we can conclude that the enzyme's active site of an enzyme may have a zinc finger domain that acts as “wearing gloves” and “taped fingers” during binding.
Learn more about the enzyme's active site here:
https://brainly.com/question/22318217
#SPJ1
Help please asp help with 1,2 and 3 please BRAINLIEST!!!!
Answer:
I do believe the answer i true im lerning this currently so i do think this is true
Explanation:
How do the respiratory and circulatory systems change throughout the day? I will give brainiest to best answer!
The way that the respiratory and circulatory systems change throughout the day is that they work together to supply the body with oxygen, the respiratory system collaborates directly with the circulatory system to do the above.
What impact do out respiratory and cardiovascular systems have?Poor food and lifestyle choices might make it harder for the respiratory system to work well. For instance, smoking can harm the tissues and cells in the lungs, which can make it exceedingly challenging for the lungs to release carbon dioxide and deliver oxygen to the body.
Note that in the process of their collaboration during the day, Inhaled oxygen travels into blood vessels where it is subsequently circulated to tissues and cells through the body's circulatory system.
Learn more about circulatory systems from
https://brainly.com/question/3597250
#SPJ1
For the following please tell me if they can or cannot cross the cell membrane without help? Why or why not.
Na+, Glucose, O2, Insulin, CO2, Fructose, K+,
Na+, K+, and insulin cannot cross the cell membrane without help whereas Glucose, oxygen, carbon dioxide and Fructose can diffuse.
What type of molecules can cross cell membranes without energy?Small nonpolar molecules like oxygen and carbondioxide are soluble in the lipid bilayer and so they can easily cross cell membranes. Small molecules such as water can also diffuse through cell membranes but larger molecules such as glucose, cannot diffuse through the cell membranes. Nonpolar molecules can pass through the cell membrane easily. Some larger nonpolar molecules like steroid hormones can also pass through the cell membrane easily. Moving through the cell membrane without the need for assisting proteins is called passive diffusion.
So we can conclude that Glucose, oxygen, carbondioxide and Fructose can cross the cell membrane without energy.
Learn more about cell membranes here: https://brainly.com/question/1768729
#SPJ1
which organism has a nerve net that allows it to a stimulus in a coordinated way
The organism that has a nerve net that allows it to a stimulus in a coordinated way is called option C: Hydra.
What kind of animal is Hydra?The majority of cnidarians, including those in the genus Hydra, contain what is known as a neural net, which is an organism-wide network of distinct and individual nerve cells and fibers.
Hydra species have two nets, one attached to the gastrodermis and the other situated between the epidermis and the muscles.
Invertebrate freshwater animals of the genus Hydra belong to the class Hydrozoa. Such an organism has a thin, transparent tube for a body that can grow up to 30 millimeters long but can also contract significantly.
Therefore Hydra have nerve net that is used respond to the touch of physical contact as well as other functions.
Learn more about Hydra from
https://brainly.com/question/2367161
#SPJ1
See options below
a. clam
b. earthworm
c. hydra
d. shark
Need help asap please
While bases take protons in processes, acids donate protons (H+). While bases have a pH of 7 or higher, acids have a pH of 7.
What is the difference between Acid and Base?While bases take protons in processes, acids donate protons (H+). While bases have a pH of 7 or higher, acids have a pH of 7. Acids release H+ ions while bases release -OH when they separate in water. While acids render litmus paper red, bases turn it blue.
1) In Experiment 1, the color of the solution changes from light (suggesting base) to dark when the acid is introduced (suggesting acid). As a result, adding the acid in this instance produced an ACIDIC solution.
2) In Experiment 2, the reverse is accurate. The hue stays light even after the addition of the acid (suggesting base). The outcome in this instance is BASIC as a result.
3) When the acid is given to the base to buffer it, this is Experiment 2. As you recall, a buffer solution is one that doesn't alter in pH when an acid or basic is introduced. We may infer that the addition of the acid in Experiment 2 was made to produce a buffer solution because it was done so the pH didn't fluctuate as much as it did in Experiment 1.
To learn more about Acid and Base refer to:
https://brainly.com/question/9836972
#SPJ13
how is the chroloplast sturucture relates to its function
s
Find the value of m.
(5m+100)° (2m+10)°
A.10
B.30
C.70
D.150 show work
Answer:
the right answer is 10
Explanation:
Active and passive transport of solutes across a membrane typically differ in which of the following ways?
a.Active transport is usually down the concentration gradient of the solute, whereas passive transport is always against the concentration gradient of the solute.
b.Active transport always involves the utilization of cellular energy, whereas passive transport does not requires cellular energy.
c.Active transport is always faster than passive transport.
d.Active transport uses protein carriers, whereas passive transport uses carbohydrate carriers.
e.Active transport is used for ions, passive transport is used for uncharged solutes
Active transport always involves the utilization of cellular energy, whereas passive transport does not requires cellular energy.
Active transport moves molecules and ions from lower concentration to higher concentration with the help of energy in the form of ATP. On the other hand, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.
Passive mechanisms like diffusion use no energy, while active transport requires energy to get done. key differences also include Passive transport moves molecules with the concentration gradient (high to low), while active transport moves molecules against the concentration gradient (Low to High).
To learn more about Active transport , here
brainly.com/question/12133248
#SPJ1
30 POINTS !!!
is urban sprawl sustainable ? (5 sentences )
Answer: Urban sprawls are unsustainable.
Explanation: Urban environmental sustainability encourages the revitalization and transition of urban areas and cities to improve liveability, promote innovation and reduce environmental impacts while maximizing economic and social co-benefits. Urban systems are inherently complex. Urban sprawl has significant environmental, economic and social consequences. It leads to higher emissions from road transport and loss of open space and environmental amenities.
Answer: No
Explanation:
Urban sprawl is the expansion that refers to a complex pattern of land use, transportation, and social and economic development usually as a direct effect of population growth on a national level. Urban sprawl is not sustainable for the environment because it creates an increase in water and car usage increasing air pollution, and creates a loss of agriculture capacity of the land. This increase in air pollution and loss of agriculture and woodlands leaves no plants able to create oxygen to sustain a thriving ecosystem. While some may argue that Urban sprawl helps create a better economy, better employment, and better living conditions, in terms of Biology, Urban sprawl is a leading cause of the destruction of our ecosystems.
Virtual Lab: Relative and Absolute Dating
From youngest to oldest: Conglomerate, Breccia, Shale, Dolostone.
Conglomerate - A conglomerate is a sedimentary rock that is mostly formed of spherical or roughly angular rocks. The aggregate is made up of cementitious (>2 mm) spherical pebbles.Breccia - Breccia is a type of rock that is made up of big angular fragments of minerals or rocks that are held together by a fine-grained matrix.Shale - Shale is a fine-grained sedimentary rock created by the compacting of clay-sized mineral particles into thin parallel layers. Dolostone - Dolomite is a fine-grained sedimentary rock composed primarily of dolomite, a mineral composed of calcium and magnesium carbonate.Learn more about the Conglomerate, Breccia, Shale, and Dolostone at
https://brainly.com/question/12995054?referrer=searchResults
#SPJ1
Simplify meiosis into its basic events
Nucleus division and cytokinesis take place twice, first in meiosis I and again in meiosis II.
MeiosisIn sexually reproducing organisms, meiosis is a kind of cell division that results in a reduction in the number of chromosomes in gametes (the sex cells, or egg and sperm). Body (or somatic) cells in humans are diploid, meaning they have two sets of chromosomes (one from each parent). The egg and sperm that combine during fertilization must be haploid, or having only one pair of chromosomes, in order to sustain this state. Each diploid cell divides twice during meiosis to produce four haploid daughter cells, which are the gametes.To learn more about Meiosis refer:
#SPJ3
Which system is responsible for breathing? Responses respiratory respiratory skeletal skeletal endocrine endocrine circulatory
Answer:
The respiratory system is responsible for breathing
Explanation please! How would you calculate the volume and surface area of a cell?
Assuming the radius of the cell is given as r, to calculate the volume and surface area of a cell, the formula below is used;
Surface area of the cell = 4 * π * r²Volume of the cell = ⁴/₃ * π * r³What are cells?Cells are the basic structural and functional unit of life.
Cells are what all living organisms are made up of.
Organisms that are made up of only one cell are said to be unicellular whereas organisms that are composed of multiple cells are said to be multi-cellular.
To calculate the volume and surface area of a cell, it is assumed that the cell is a sphere. This is because most cells when placed in a liquid medium or suspension, they exert equal forces in all directions, which results in the cells assuming a spherical shape.
To measure the radius of the cell, the cell is placed in a suspension and then viewed through a microscope at a know magnification. The radius of the cell is then taken.
The radius of the cell obtained is then used to calculate the volume and surface area of the cell.
Learn more about volume of cell at: https://brainly.com/question/1558334
#SPJ1
A strategy for fighting bacterial infections uses viruses. Viruses that infect bacteria are called bacteriophages. Phage comes from the Greek word for “eater.” Explain why it is not accurate to call a virus that kills bacteria a “bacteria eater." What happens when a virus attacks a cell?
It is not accurate to call a virus that kills bacteria a "bacteria eater" as it does not technically eat bacteria but infects it. The virus that enters a cell replicates it's genome inside it causing the cell to be infected with it.
Bacteriophages, or simply phages, are viruses that infect and kill bacteria. Bacteriophage is a name that means "bacteria eater." Although theoretically speaking, viruses don't consume anything, they do kill the bacteria and other infected cells. They have been demonstrated to successfully combat and eradicate multi-drug resistant bacteria and are the most prevalent biological organisms in nature.
Virus particles infiltrate host cells. Once a viral particle penetrates a host cell, its nucleic acid component or it's genome disrupts the processes of the cell, essentially taking over the host cell's proteins and other components to produce new viral particles.
To know more about a virus, refer to the following link:
https://brainly.com/question/25236237
#SPJ9
Jake has hypothesized that if you add aspirin to the water when watering plants, the plants will have more blooms. To verify his hypothesis, Jake should use the same of amount of water and aspirin for each of the plants in the experimental group.
True or false
True his hypothesis, Jake should use the same of amount of water and aspirin for each of the plants in the experimental group.
Does studying the genetics of other creatures matter because it might provide knowledge about our own genetic makeup?Biology is the study of living organisms, both extant and hypothetical. Because information in other animals' genetic make-up may contain information about our own, it is crucial to research it. Since an amoeba has just one cell, it is an organism.
When two atoms exchange or contribute their electrons, an ionic connection is created. Atoms can be attracted to one another by van der Waals forces. The electrons are always drawn to both atoms in an ionic connection equally. The process by which atoms or groups of atoms in the compounds are restructured into new substances is known as a chemical reaction.
learn more about hypothesis refer
https://brainly.com/question/606806
#SPJ13
what is the function of scapula bone?
Answer:
The scapula is a crucial bone for the shoulder joint's proper operation. It engages in six different motions, including protraction, retraction, elevation, depression, upward rotation, and downward rotation, enabling full-functional movement of the upper extremities.
The scapula is a crucial bone for the shoulder joint's proper operation. It engages in six different motions, including protraction, elevation, retraction, depression, upward rotation, and downward rotation, all of which enable full-functional movement of the upper extremities.
A triangular bone called the scapula, sometimes referred to as the shoulder blade, connects the clavicle and the humerus. This bone is situated behind. The stability of the other bones involved in the rhythm of shoulder motion is greatly aided by the scapula.
The scapula covers the posterior upper chest, including the underlying nerves and blood arteries, in addition to supporting the other bones involved in rotating the shoulder.
These are a few potential reasons of scapula pain: damage to the bones supporting the scapula or to the shoulder joint. slinging strapped luggage over the shoulder. repetitive arm actions, such as swimming, throwing, and racquet sports.
To learn more about scapula bone
https://brainly.com/question/15041799
#SPJ4
Which process of the water cycle occurs when water releases 334 joules of heat energy per gram?
1.melting of ice
2.condensation of water vapor
3. evaporation of water
4.freezing of water
Describe how you went about making your night sky observation
It is possible to observe the night sky without any special equipment, while a sky chart and a good telescope or pair of binoculars can enhance some observations and make some otherwise invisible objects visible.
What is seen in the night sky?The Milky Way, our galaxy, is made up of the stars we see at night in a dark sky. The Sun is one of the many stars that make up the Milky Way. The Sun isn't extremely brilliant compared to other stars, but because of how near it is to Earth, it appears incredibly bright to us.
What are the three best methods to observe the night sky?You can see your stars in one of three ways. One can observe the stars with their eyes, binoculars, or telescopes.
To know more about night sky visit:
https://brainly.com/question/10947453
#SPJ10
The cells of the cheek become blue when the stain methylene blue is added which property of the cell membrane does this show
Explanation: Human cheek cells stained and mounted in glycerine were observed with the help of a compound microscope. The stain that could be used is Methylene blue. Methylene blue stains negatively charged molecules in the cell, including DNA and RNA.
The components of the cell which would be seen are the nucleus, plasma membrane, and cytoplasm.
does anybody know the answer to this question ?????
The fish is a salt water organism. Its environment is hypertonic to its cell causing water to leaves its cell via osmosis The fish release small amount of dilute urine to maintain homeostasis. The correct option is B.
What is natural aquatic environment?Oceans, lakes, rivers, streams, estuaries, and wetlands all have aquatic ecosystems. Fish, plants, and bacteria are just a few examples of the living species that can only exist in aquatic settings. Because of their vulnerability, these ecosystems are quickly upset by pollutants.
What are the benefits of aquatic environments?Aquatic habitats serve a variety of important environmental roles. They replenish groundwater, cleanse water, reduce floods, increase and maintain streamflow, offer habitat for wildlife, and provide people with recreational opportunities.
To know more about Aquatic environment visit:
https://brainly.com/question/2560388
#SPJ13
The complete question is-
The imagine of a fish in its natural aquatic environment is modelled here . Examine the movement of water and ions shown by the model. Which statement describes the natural environment in which the fish is found based on the image shown here ?
A-The fish is a freshwater organism. Its environment is hypertonic to its cell causing water to leaves its cell via osmosis The fish release small amount of dilute urine to maintain homeostasis.
B-The fish is a salt water organism. Its environment is hypertonic to its cell causing water to leaves its cell via osmosis The fish release small amount of dilute urine to maintain homeostasis
C-The fish is a alkaline water organism. Its environment is hypertonic to its cell causing water to leaves its cell via osmosis The fish release small amount of dilute urine to maintain homeostasis
D-The fish is a distilled water organism. Its environment is hypertonic to its cell causing water to leaves its cell via osmosis The fish release small amount of dilute urine to maintain homeostasis
How does the gametophyte obtain nutrition?
Answer:
through water
Explanation:
water helps to get energy of anything deal with air
name the monomer and describe the importance of the order of these monomers and how dna is related to this order
Nucleotides are the monomers of DNA. They consist of five-carbon sugar deoxyribose, a phosphate group and a nitrogenous base attached to the sugar. Nucleotides including adenine A thymine T guanine G and cytosine C are available.
DNA monomers or nucleotides can bind phosphates and sugars on the outside and nitrogenous bases on the inside where they can bind to other nitrogenous bases to form a ladder. DNA is a polymer. The monomeric units of DNA are nucleotides and the polymers are known as polynucleotides.
Monomers are small mostly organic molecules that can combine with other similar molecules to form very large molecules or polymers. All monomers have the ability to form chemical bonds with at least two other monomer molecules. The unique structure of DNA allows the molecule to replicate itself during cell division. When a cell prepares to divide, the DNA helix splits in the middle and becomes two single strands.
Learn more about The monomer here:-https://brainly.com/question/2054570
#SPJ1
What president in the US began the
conservation efforts to preserve land?
A. John F. Kennedy
B. Abraham Lincoln
C. George Washington
D. Theodore Roosevelt
Answer: D. Theodore Roosevelt
True or false when the particles are compressed they are closer together and they bump into eachother more often
The particles are compressed, closer together, and collide more frequently, energy is transferred during collisions.
Are there collisions between particles?Because of the tighter spacing between particles, particles move quickly in all directions but collide more frequently than in gases. Because the particles gain kinetic energy as the temperature rises, they move faster, increasing the likelihood of collisions and diffusion.
What occurs when a solid's particles are crammed so closely together?A solid is made up of very closely spaced-apart particles. Each particle is firmly anchored in situ and is limited to stationary vibration. Many solids contain particles that arrange themselves into crystals in a predictable, repeating pattern.
Why do molecules collide with one another?The molecules will travel quicker and are more likely to collide with one another if there is more energy available to them. Higher temperatures should result in more molecule-to-molecule collisions and more frequent chemical reactions.
To know more about collision visit:
https://brainly.com/question/2525312
#SPJ10