6. How are excess salts that accumulate in cells transferred to the blood stream so they can be removed from the body? Explain how this process works in terms of tonicity.
Answer:
Tonicity is the concentration of a solution compared to another, with regards to the number of solutes in these solutions. Too many solutes in a cell may cause them to be hypertonic hence absorb water too much water and lyse. Therefore, these solutes are excreted to the blood-stream through active transport and facilitated diffusion. These solutes are then excreted by the kidneys. If they are not excreted, the osmotic pressure (due to the inflow of water to the bloodstream by osmosis) may cause high blood volumes being pumped by the heart hence high blood pressure
Explanation:
Tonicity is the concentration of a solution compared to another, with regards to the number of solutes in these solutions. Too many solutes in a cell may cause them to be hypertonic hence absorb water too much water and lyse.
What is excreted from the blood stream?The solutes are excreted to the blood-stream through active transport and facilitated diffusion. These solutes are then excreted by the kidneys. If they are not excreted, the osmotic pressure due to the inflow of water to the bloodstream by osmosis may cause high blood volumes being pumped by the heart hence high blood pressure.
Osmosis is the net movement of water across a semi-permeable membrane from an area of lower gradient concentration to an area of higher gradient concentration. On the other hand, tonicity is the ability of an extracellular fluid to make water move into or out of a cell through osmosis. A solution's tonicity is related to its osmolarity or the total concentration of the solutes in a solution.
Therefore, Tonicity is the concentration of a solution compared to another, with regards to the number of solutes in these solutions.
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What happens when the positive transcription factor affinity is slightly lower than the negative transcription factors affinity? A. mRNA is made in large quantities in infrequent batches B. mRNA is made in small quantities in frequent batches. C. mRNA is made in large quantities in frequent batches D. mRNA is made in small quantities in infrequent batches.
Answer:
a
Explanation:
a
Answer: a!!
Explanation: this is correct!
Substance A and substance B are mixed together. To separate the mixture, water is added, and substance A is filtered out. Then, the remaining liquid is heated to remove the water, leaving a residue of substance B. Which statement about substance A and substance B could be correct?
Substance A is rice, and substance B is sugar.
Substance A is rice, and substance B is sugar.
Substance A is sugar, and substance B is instant coffee.
Substance A is sugar, and substance B is instant coffee.
Substance A is sand, and substance B is alcohol.
Substance A is sand, and substance B is alcohol.
Substance A is alcohol, and substance B is salt.
The correct answer would be that substance A is rice, and substance B is sugar.
For substance A to be filtered out, it means that A is a water-insoluble substance and for substance B to be recoverable by evaporating off the water, it means that B is water-soluble.
Thus, A can neither be sugar nor alcohol because neither can be recovered by filtration. Also, B can neither be coffee nor alcohol because they can not be recovered as residue through evaporation of water.
Therefore, the only correct answer is that substance A is rice, and substance B is sugar because rice can be filtered out from water while the water-soluble sugar can be recovered by evaporating the water.
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Answer:
substance A is rice, and substance B is sugar.
Explanation:
What are the two components of the scientific name of a species in the Linnaean system? Select all that apply. Genus, Specific epithet, Phylum, Family.
Answer:
Genus, Specific epithet
Explanation:
The scientific name was created to establish a standardized language that would allow scientists and scholars around the world to be able to present living beings independently of their native language.
For this purpose, it was decided that the scientific name would be a binomial composition, that is, it would use two names. The first name refers to the genus to which the species belongs, the second name refers to the specific epithet that is the specific descriptor of that species. In addition, the scientific name should be written in italics and have the first initial letter written in uppercase. Ex: Homo sapiens.
Evolution is defined as a change in allele frequencies in a population over time.How is the relationship between malaria and sickle cell n example of human evolution?
Answer:
Dramatic evolution within human genome may have been caused by malaria parasite. A genetic mutation that protects people from a common form of malaria spread like wildfire in sub-Saharan Africa about 42,000 years ago, according to a new study.
People develop sickle-cell disease, a condition in which the red blood cells are abnormally shaped, if they inherit two faulty copies of the gene for the oxygen-carrying protein haemoglobin. The faulty gene persists because even carrying one copy of it confers some resistance to malaria.05-May-2011
Explanation:
An evolutionary force, called balancing selection, appears to be responsible for maintaining defects in our DNA associated with diseases, such as sickle cell anemia, because the mutation's damaging effects might be offset — in a biological way of thinking — by its potential benefits.
please answer the questions
it's urgent
Answer:
i)f
ii)d
iii)e
iv)a
v)b
vi)c
In brief state what happens when a) dry apricots are left transferred to sugar solution? b) a Red Blood Cell is kept in concentrated saline solution? c) the Plasma-membrane of a cell breaks down? d) rheo leaves are boiled in water first and then a drop of sugar syrup is put on it? e) golgi apparatus is removed from the cell?
Answer:
Explanation:
(a) Dry apricots when placed in pure water swell due to osmosis and when in sugar water, they shrink again.
(b) When a Red Blood Cell is placed in concentrated saline solution exosmosis occurs and the RBCs shrink due to excess loss of water.
(c) Breaking of the plasma membrane leads to the scattering of the ceil organelles as it forms the basic supporting unit of the cell.
(d) When Rheo leaves are boiled in water first and then a drop of sugar syrup is put on it, osmosis does not occurs, due to the death of the cells of the leaf. This shows that selective permeability is property of living plasma membrane.
(e) Golgi complex helps in the package, storage and transfer of proteins synthesized by ribosomes. Thus, when ribosomes are removed the cell will not function properly
What is each half of a chromosome called?
O A. Demisome
OB. Spindle Fiber
C. Chromatid
D. Centromere
Answer:
cromatidaida
Explanation:
Answer:
the answer is C
''chromatid''
Explanation:
hope this helps :)
Many male birds will expend A great deal of energy building nests. Females will mate with the males who build the best nest. This is best described as an example of ___.
a) natural selection
b) sexual selection
c) runaway selection
d) an invasive species
e) disruptive selection
Answer:
B
Explanation:
Female birds mate with the males who build the best nest is the example of option b. sexual selection.
Sexual selection is a mode of natural selection in which one sex members choose the mate with the member of the other sex for mating.
These members of the biological sex prefer opposite sex members for species-specific characteristics in individuals of the other sex such as best building nest in birds. Other male birds compete with members of the same sex to get selected by members of the female birds in this instance.Thus, the correct answer is option b. sexual selection as female birds prefers species-specific traits to select their mating partner by best nest building by males.
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How does the use of hydroelectric energy compare to the use of coal?
a.
Hydroelectric energy is more commonly used than coal.
b.
Hydroelectric energy is associated with less waste production than coal.
c.
Hydroelectric energy has a larger environmental impact than coal use.
d.
Hydroelectric energy requires more land space than coal use.
Currently, Coal is widely used because it's cheaper.
hydroelectric energy is more expensive (to build) but it has much much less waste, and no carbon emissions unlike coal
rest options are false.
Answer:
B.) Hydroelectric energy is associated with less waste production than coal.
Explanation:
While coal produces ash, CO2, CO, NOx, SOx, and many other waste products, hydroelectric energy has no waste products and doesn't pollute the environment.
fundamental molecules produced in photosynthesis is
(a) glucose (b) amino acids (c) fatty acids (d) nucleotide
glucose is the fundamental molecules produced in photosynthesis
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define acceleration. Write its formula and SI unit . pls answer my question!
Answer:
the rate of change of velocity with time is called acceleration.
it can also be defined as the increase in velocity per second.
The S.I. unit of acceleration is meter per second square or ms−2.
formula; a = Δv / Δt
where a is acceleration,
Δv is the change in velocity,
and Δt is the amount of time it took for that change to occur.
1.What is the Independent Variable?
5 points
Connor and Miguel want to investigate if the type of
fertilizer changes the color of their hydrangea flowers.
They select 10 hydrangea bushes and plant them in the
same yard with the same type of soil. Every bush gets 3
cups of fertilizer, but each receiving a different brand.
One bush gets no fertilizer. All bushes receive morning
sunlight and no afternoon sunlight. All bushes are watered
the same amount every other morning. After four weeks,
the boys observe the color of the blooms on each bush.
the bush
the soil
the fertilizer
the color of the plants
Answer:
the type of fertilizer
Explanation:
because independent variable is something that effects that the whole outcome of the experiment and here the type of fertilizer chosen is going to be the thing that is going to effect the ending result
What is it called when vesicles are used to move substances out of the cell ?
O A. Passive
O B. Endocytosis
O C. Diffusion
D. Exocytosis
Answer:
d
Explanation:
deforestation can be reduced by combined effort of all? give reason
Explanation:
Deforstation can be reduced by combined efort of all as if we combinely work together to shop deforestion and start afforestation there is a high chance of reduction of deforestation. All people together can start afforestion in sense the deforestion awarness would be raised and everyone would stop deforesting and start afforesting.
is when a system is in motion but is balanced because it experiences no net change,
A. Dynamic equilibrium
OB. A convection current
C. Static equilibrium
D. Co-evolution
Answer:
i think A
Explanation:
6. Which type of seismic wave is highlighted in the image?
O A. P wave
B. S wave
O C. Love wave
D. Rayleigh wave
Answer:
Rayleigh wave
Explanation:
Rayleigh waves are a type of surface acoustic wave that travel along the surface of solids. They can be produced in materials in many ways, such as by a localized impact or by piezo-electric transduction, and are frequently used in non-destructive testing for detecting defects.
hope it helps :)
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Rayleigh wave, surface acoustic waves called Rayleigh waves move along the surface of solids, hence option D is correct.
What is seismic wave?They are commonly employed in non-destructive testing to find flaws and can be created in materials in a variety of methods, as by a localized impact or by piezoelectric transduction.
These include what are known as Rayleigh waves. A Rayleigh wave's amplitude decreases with depth below the surface and becomes noticeably tiny at depths greater than a few wavelengths.
As a result, the disturbance is limited to a solid's surface layers. The motion experienced by the surface layers includes both transverse and longitudinal components.
Therefore, Rayleigh wave type of seismic wave is highlighted in the image.
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In humans, the ability to roll up the sides of the tongue into a U-shape is controlled by one gene. Ability to roll the tongue is dominant to the inability to roll it. If two people who can roll their tongues each had one parent who could not, what is the probability that they will have a child who cannot roll his/her tongue
Answer:
25%
Explanation:
male
can roll tongue - cannot roll tongue
female
can roll tongue - cannot roll tongue
If they have a child, the possible combinations are:
1)
father's gene: can roll tongue
mother's gene: can roll tongue
RESULT = THE CHILD WILL BE ABLE TO ROLL HIS/HER TONGUE
2)
father's gene: can roll tongue
mother's gene: cannot roll tongue
RESULT = THE CHILD WILL BE ABLE TO ROLL HIS/HER TONGUE
3)
father's gene: cannot roll tongue
mother's gene: can roll tongue
RESULT = THE CHILD WILL BE ABLE TO ROLL HIS/HER TONGUE
4)
father's gene: cannot roll tongue
mother's gene: cannot roll tongue
RESULT = THE CHILD WILL NOT BE ABLE TO ROLL HIS/HER TONGUE
What is mean by photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
Hey there!
Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunligh, so we eat the plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the reen pigment found in the chlorookasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.
Hope this helps! I promise I did not copy or anything like that from the internet.
Have a great day! :)
Arrange the sentences in order to describe how oxygen from air is transported to the cells in the kidneys.
Answer:
The pulmonary veins carry oxygenated blood to the heart. Air enters the bronchioles in the lungs and reaches the alveoli. The capillaries join together to reach the arteries, transferring the oxygen. The oxygen-rich blood moves from the aorta and reaches the kidneys through a series of blood vessels.
When objects of two different temperature are in contact, what happens?
Answer:
The answer is C.
Explanation:
This is because the objects will exchange thermal energy, until thermal equilibrium is reached, i.e. until their temperatures are equal. We say that heat flows from the hotter to the cooler object.
Energy is transferred from a warmer to a cooler object through the phenomenon of heat. For instance, a large pan of lukewarm water will gain heat from a lit match (a higher temperature object) (lower temperature object). Thus, option C is correct.
What change in temperature when object are in contact?It feels warmer in your hands to hold a hot cup. The heat is moving from one object to another, which is what you are feeling. Your hands receive the hot chocolate's thermal energy.
Heat is exchanged when two objects are at different temperatures. Up until the two items are at the same temperature, the cooler object warms up. Always, heat energy moves from a hot object to a cooler one.
The colder end will get energy from the hot end as it passes through the rod. The temperature will eventually equalize across the entire rod. Wearing gloves is crucial when working with hot metal, for this reason.
Therefore, The warmer object transfer heat energy to the cooler object.
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please please help!!
Answer:
Carrying capacity was reached due to the abundance of prey
The conversion of glucose to glucose 6-phosphate is an enzyme-catalyzed reaction. During this reaction, the enzyme hexokinase folds around the substrates to bring reactive side chains from the active site into alignment with the substrates. This change in hexokinase is an example of
Answer:
Induced fit
Explanation:
Induced fit (IF) is a model used to understand enzyme-substrate interactions, which can be considered as a development of the classical lock-and-key model. This model (IF) was proposed by Daniel Koshland (1958) in order to understand protein conformational changes during the binding process. The model states that the active site of the enzyme, i.e., the region where the substrate binds and catalyzes the reaction, is reshaped when it binds with its substrate in order to improve the fit. The IF model assumes that the active site of the enzyme is flexible and is capable of changing its shape until the substrate is completely bound.
Which ocean borders the western coast of South America
Answer:
Pacific Ocean
Explanation:
here is your answer
While examining the scene of a murder, Investigator Allen notes that the newspaper is opened on the kitchen table. He concludes that the victim had already gone out to get his newspaper before he was murdered. This evidence is an example of an indicative act.
True
False
Answer:
The correct answer is:
Explanation:
True is the correct answer...
Hope this helps....
Have a nice day!!!!
what modification do we find in the steam and petiole of the aquatic plants
Answer:
Explanation:
Modification Definition Example
1) Tendrils The leaves are modified into slender wiry and
coiled structures called leaf tendrils and support climbers to climb Pisum Sativum
2) Spines The leaves modified into a pointed structure and usually protect them from herbivores. Opuntia
3) Phyllode It is a green extended structure formed by the modification of petiole or rachis of leaf that carries out photosynthesis. Acacia
4) Storage leaves Leaves become fleshy due to storage of water and food material. Aloe
5) Cotyledons The mature embryo shows either one or two cotyledons. Angiosperms and gymnosperms
6) Leaf bladders Some of the leaves of aquatic plants modified into leaf bladders to trap small insects. Utricularia
7) Leaf Pitcher Lamina of the whole leaf is modified into a lid known as a pitcher which traps insects to fulfil the need of nitrogen. Nepenthes
A week after a near-drowning incident, a 6-year-old boy presents with respiratory distress, tachypnea, and fever. What should you suspect
Answer: I would suspect there was actually something in the water that caused this. Maybe the child swallowed some of the water.
Explanation:
Shown above
Jameson lives in a city on the shores of the Atlantic Ocean. The temperature fluctuations are relatively small in his city because takes longer to heat up and cool down due to its high .
Answer:
Water, high specific heat capacity
Explanation:
The temperature fluctuations are relatively small in Jameson city because takes water longer to heat up and cool down due to its high specific heat capacity because water has high heat capacity that is it absorb alot of heat before it start to get hot. takes more energy to increase the temperature of water compared to other substances which help to regulate extremes in the environment.
Water surrounding cities take longer to heat up and longer to cool down so cities that are near the oceans will tend to have less change and less extreme temperatures compared to inland cities.
Answer:
I believe it's (water and specific heat) let me know if this is correct :)
Which statement describes the role of the organism indicated by the blue arrow in the food web?
A secondary consumer that obtains its energy from the consumption of plants
A primary producer that recycles organic molecules from sunlight
A primary decomposer that recycles organic molecules by breaking them down
A primary consumer that obtains its energy from the consumption of plants
Answer:
A primary consumer that obtains its energy from the consumption of plants
Explanation:
Organisms that eat the producers are the primary consumers. In this case, the producer is the grass, which is then eaten by the primary consumer, the meadow vole.
what are the functions of protein
Answer:
Explanation:
7 Important Functions of Protein in Your Body
Causes Biochemical Reactions. ...
Acts as a Messenger. ...
Provides Structure. ...
Maintains Proper pH. ...
Balances Fluids. ...
Bolsters Immune Health. ...
Transports and Stores Nutrients.