When a fish swims from salt water into fresh water its cells react by losing water and shrinking. The correct option is D.
What is fresh water?Glaciers, lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater contain fresh water.
These freshwater habitats cover less than 1% of the world's total surface area but are home to 10% of all known animals and up to 40% of all known fish species.
When a fish swims from salt water into fresh water its cells react by losing water and shrinking due to osmosis.
Thus, the correct option is D.
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A fish swims from salt water into fresh water, its cells react by gaining water and swelling. Thus, option "A" is correct.
What is osmosis?Osmosis is the movement of water through a semipermeable membrane from an area of low solute concentration to one of higher solute concentration to establish an equilibrium.
For example, The solutes are solids that dissolve in water and form ions, such as salts (NaCl) and sugars, these solutes are also found the cell’s cytoplasm.
Thus, option "A" is correct.
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If the elephants, just because of their size, are the only large animals that can get to the water to drink, the zebras may suffer. This is an example of ______?
A) Competition between habitats
B) Competition between species
C) Breakdown of ecosystems
D) overlap of population
If the elephants, just because of their size, are the only large animals that can get to the water to drink, the zebras may suffer. This is an example of Competition between species.
What is species competition?Competition is an ecological relationship that occurs between organisms of the same or different species. We say that competition is intraspecific when individuals of the same species are involved, and that it is interspecific when dealing with different species.
Interspecific competition is an interaction between two species that causes damage to one or both of them. In general, competition can be for resources such as: space, food or nutrients, light, organic waste, among others.
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Following a bad fall on the ice, 54-year-old Neal landed on his gluteal region. Subsequently, he has absolutely no feeling in the skin overlying the hamstring muscle group. What nerve do you suspect has been lesioned in the fall
The posterior cutaneous nerve of the thigh.
Loss of sensation to the sole of the foot would result from nerve blockade of the tibial nerve at the medial malleolus.
What is a sensory nerve?A sensory nerve carries sensory information to the nervous system. Sensory information is that which is coming from external stimuli such as pressure and temperature. If a sensory nerve is damaged, the person loses sensation in that region of their body. This explains why the patient cannot feel his fingers.
Thus, this could be the answer.
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1. do you think erythropoietin levels in athletes at low altitude are lower, higher, or the same after training at a high altitude for 2 months?
2. calculate the average ml of oxygen molecules in 100 ml blood in the athletes at low altitude and then in athletes in high altitude while training at high altitude. use the following information: 1.39 ml of oxygen per gram of hemoglobin.
3. do athletes training at high altitudes have more or less oxygen molecules per ml of blood then athletes training at low altitudes? explain why this difference gives athletes who train at high altitudes an advantage over athletes who train only at low altitudes.
results
table: effect of altitude on hct and hb
low altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 52 21 40 14.5
subject 2 49 20 41 14.4
subject 3 48 21 44 14.6
average 4 50 21 42 14.5
high altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 49 22 45 17.4
subject 2 50 22 44 17.3
subject 3 50 22 44 17.3
subject 4 50 22 44 17.3
1. Erythropoietin will be higher at low altitude. Erythropoietin or EPO level will be higher because of the raised blood oxygen training but its lasting period will depend on the training content as here it is only 2 months.
About high erythropoietin:
Among the objectives of altitude training is to improve athletes' sea-level endurance performance by raising blood oxygen carrying capacity. The attainment of improved haematological variables is mostly due to the augmented erythropoietin (EPO) production in hypoxia. The duration of exposure and degree of hypoxia affect the level of the erythropoietin EPO rise and the rate of erythropoiesis acceleration. The haematological response to altitude training may also be influenced by a wide range of additional factors.
2. 100 ml of blood contain 27.8 mL of oxygen. This can be said as it has been shown that a healthy person typically possesses 20 grammes of haemoglobin in every 100 millilitres of blood.
Procedure:
=20∗1.39
=27.8mL
Amount of oxygen found in 11 grams of hemoglobin is equal to 1.39 milliliters of oxygen.
Thus, the total amount of oxygen in milliliters would be equal to product of total weight of hemoglobin and the total amount of oxygen in ml in one gram of hemoglobin.
3. Athletes training at high altitude have more oxygen molecules. They have an advantage as a result of having more red blood
Why so:
Higher elevations have thinner air, which has less oxygen molecules per volume of air. The body therefore makes more red blood cells when athletes workout at these high elevations. For up to 20 days, these additional blood cells remain in the body. Also as a result of having more red blood cells, their blood can carry more oxygen. When they compete at lower elevations, their muscles naturally get a boost from more oxygen.
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1. The greatest concentration of minerals in Arizona surrounds this city:
O Ajo
Phoenix
Flagstaff
Tucson
Kingman
Answer:
Flagstaff
Explanation:
Got the answer correct
The greatest concentration of minerals in Arizona in found in the city called Flagstaff.
Arizona is one of the most dense and prolific states in the USA for mineral and rock collectors.
It is incredibly diverse in terms of geology.
Minerals like copper, gems, crude perlite, molybdenum, silver, zeolites and more are present here in a very abundant amount.
The best places to collect minerals in Arizona includes area surrounding the cities namely, Flagstaff, Phoenix, Tucson, Clifton, Morristown and Kingsman. But the area with highest concentration those minerals is the near Flagstaff.
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Why is there no output from the photo-electric cell when the RLG is not moved?
There is no output from the photoelectric cell when the RLG isn't moved because the laser beams are 180 degrees out of phase.
What is a photoelectric cell?A photoelectric cell is also known as phototube and it can be defined as an electronic tube (device) that is fitted with a photosensitive cathode, which emits electrons when illuminated, as well as an anode that collects the emitted electrons.
Based on scientific research and experiment, we can logically deduce that there is no output from the photoelectric cell when the ring laser gyro (RLG) isn't moved because the laser beams are 180 degrees out of phase.
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Which describes the smallest basic unit of a substance that still displays the properties of that substance? Which describes the smallest basic unit of a substance that still displays the properties of that substance ?
Answer:
Atoms. An atom is the smallest unit of a pure substance or element that can exist and still retain the properties of the original substance or element.
A plant is homozygous for the production of yellow seeds (YY) and homozygous for wrinkled seeds (r). What possible gametes will this plant produce?
OA. Yr only
OB. YY and rr only
OC. Y, y, and r only
OD. YR, Yr, yR, and yr
A plant is homozygous for the production of yellow seeds (YY) and homozygous for wrinkled seeds, possible gametes will this plant produce (r) Y, y, and r only. Thus, option "C" is correct.
How, explain your answer?The plant is heterozygous (Yy) for the color of seed and homozygous (rr) for the shape of the seed.
For the color of the seed, there are two alleles that will take part in gametes formation are (Y) n (y) while for the shape of seed is have only two recessive alleles (r).
So, by the assortment of (Y) n (r) the first gamete will be (Yr) and an assortment of (y) n (r) second gamete will be (yr).
Thus, the correct answer is option C. Yr and yr only.
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what kind of neurotransmitter is serotonin ?
According to the research, serotonin is an inhibitory type neurotransmitter that acts in the brain regulating mood, sleep.
What is serotonin?It is a neurotransmitter that is produced in the intestines, brain and blood platelets from the synthesis of tryptophan.
This neurotransmitter plays a relevant role in the inhibition and regulation of sleep, appetite, body temperature and anger, for example.
Therefore, we can conclude that according to the research, serotonin is an inhibitory type neurotransmitter that acts in the brain regulating mood, sleep.
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When you are hot, blood vessels in the dermis to maintain homeostasis. When you are cold, blood vessels in the dermis to maintain homeostasis. Heat loss from the body will , when blood vessels in the dermis dilate. Heat loss from the body will when blood vessels in the dermis constrict.
Answer:
Blood vessels in the dermis dilate in the hot days or during exercise to cool off the body by sweating. During cold, the same blood vessels will constrict to keep the body warm and reduce the heat loss.
Explanation:
Question 5 of 25
Which of these is an abiotic factor in an aquatic ecosystem?
A. Whales
B. Seaweed
C. Sea stars
D. Water
Answer:
d - water
Explanation:
an abiotic factor in any ecosystem is non living
the only non living thing in this ecosystem that is listed is water
so water is the answer
Answer:
[tex]\huge\boxed{\sf Water}[/tex]
Explanation:
Abiotic factors:The factors of an ecosystem which are non-living are called the abiotic factors of the ecosystem.In the given list:
Whales are living.Seaweed is living.Sea stars are living.Water is non-living.So, Water is an abiotic factor of an aquatic ecosystem.
[tex]\rule[225]{225}{2}[/tex]
Which of the following would be made entirely of renewable resources?
OA. A diamond necklace
OB. A wooden basket
OC. A plastic water bottle
OD. A ballpoint pen
give a well-detailed explanation of the importance of the amniotic sac to the mammalian embryo
Answer:
The amniotic sac and its filling provide a liquid that surrounds
and cushions the fetus . It is a site of exchange of essential
substances, such as oxygen, between the umbilical cord and the
fetus. It allows the fetus to move freely within the walls of the
uterus. Buoyancy is also provided
The graph below is an age-structure diagram for a population of African
elephants.
Age-structure Diagram of African Elephants
€
Age class
EDUMA
101234567
4800*
OA Under the age of 20
B. At all ages shown
OC. Over the age of 35
D. Between 20 and 25
B
C
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At which ages do male elephants outnumber female elephants, according to
the diagram?
The age at which the male elephants outnumber the female elephants, according to the diagram is B and D.
What is an Age-Structured Diagram?This refers to the depiction of data of a range of items that shows the distribution of population through the use of age group and sex.
Hence, we can see that from the complete information, there is a graph that shows the ages of male and female elephants and we can see that in classes of B and D, the males outnumber the females.
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During an action potential, the rapid decrease in sodium permeability and simultaneous increase in potassium permeability is responsible for __________.
During an action potential, the rapid decrease in sodium permeability and simultaneous increase in potassium permeability is responsible for Repolarization.
K+ departs the cell after Na+, which enters the cell first. Ions can move freely across the axon membrane because of the difference during the action potential.Because sodium contains a positive charge, the neuron becomes more positive and depolarized. Potassium channels take longer to open. As soon as the cell does open, K+ rushes out, reversing the depolarization known as repolarization.Sodium channels close during the peak of the action potential when potassium leaves the cell. When potassium ions are effluxed, the membrane potential is lowered or the cell becomes hyperpolarized.Outside of the cell, the concentration of Na+ is greater than inside the cell. while the concentration of K+ is is greater inside the cell than outside.
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Dihybrid crosses
Black coat color is dominant over white coat color in guinea pigs. in addition to coat color, rough coat is dominant over smooth coat.
a. in a punnett square, demonstrate a cross between a homozygous black/homozygous rough with homozygous white/homozygous smooth. Describe the genotype and phenotype as fractions
Answer:100% black with rough for both phenotype and genotype;4/4,1
Explanation:
so if a black coat and rough coat are dominant and a guinea pig that is a purebred(homozygous)black coat with rough coat and a homozygous white coat with smooth coat breed the dominant allele will show up for both so as a result since the black coat and rough coat are dominant the result will be 100% black with rough coat.
During which phase of the cell cycle is a cell's DNA copied?
A. R phase
B. Prophase
C. Interphase
M. M phase
Answer:
Interphase
Explanation:
Answer:b
Explanation:because it is the best answer
Which type of electromagnetic wave has more energy than a wave of
visible light with the same amplitude?
O x-ray
Microwave
Radio wave
Infrared light
The scale below shows the pH levels of various liquids. Which of the following substances is a strong acid?
Answer:
Soda
Explanation:
0 is the most acidic and 14 is the most basic /alkaline
which is s true for both photosynthesis and cellular respiration
Select the correct answer from each drop-down menu. genes are segments of dna that determine the phenotype of an individual. pea colors can be yellow or green. when two plants that produce yellow peas were crossed, the offspring produced green peas. this is because the parents were for pea color. because there are only two options for pea color, the plants’ pea color is a case of
The correct answer is as follows.
This is because my parents were heterozygous for the color of the beans. The color of the plant beans is the case of simple Mendelian laws, as there are only two choices for the color of the beans.
What is the meaning of Mendel's laws?Mendel's laws refer to a specific pattern of how a trait is passed from parent to offspring. These common patterns were established by the Austrian monk Gregor Mendel, who conducted thousands of experiments on bean plants in the 19th century.
What is an example of a heterozygous?If the two versions are different, the genotype of the gene is heterozygous. For example, a heterozygous hair color means that there is one red hair allele and one brown hair allele. The relationship between the two alleles affects which trait is expressed.
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What data would meselson and stahl have expected if dna replication was conservative, rather than semiconservative?.
the left brain hemisphere receives sensory input from the _________ and sends motor commands to the _________.
The left brain hemisphere receives sensory input from the right side of the body and sends motor commands to the right side of the body.
What are brain hemispheres?The brain hemispheres are two main parts in which the brain or cerebrum can be divided.
It is well known that the brain hemisphere functions are opposite in direction of functions, i.e. the right hemisphere controls the left and vice versa.
In conclusion, the left brain hemisphere receives sensory input from the right side of the body and sends motor commands to the right side of the body.
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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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Which two sentences use coordinate adjectives?
A.The dark, musty cellar was full of mice.
B. We rode down a long dirt road on a sunny morning.
C. The dark-haired, hazel-eyed baby was gurgling happily.
D.Alan is wearing a pale blue sweater.
The two sentences which use coordinate adjectives include:
The dark, musty cellar was full of mice.The dark-haired, hazel-eyed baby was gurgling happily.What are Coordinate adjectives?These are words which describe the features of the same noun and is usually separated by a comma.
Options A and C have coordinate adjectives such as 'dark' and the 'dark-haired' respectively.
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This functional group consists of phosphorous bonded to three oxygens and double-bonded to one oxygen. This functional group consists of phosphorous bonded to three oxygens and double - bonded to one oxygen .
Answer:
Functional groups are groups of atoms that occur within organic molecules and confer specific chemical properties to those molecules. When functional groups are shown, the organic molecule is sometimes denoted as “R.” For example, ethanol is typically drawn like this:
In order to condense the structure and focus on the hydroxyl group (the oxygen and hydrogen bound to the second carbon), everything besides the hydroxyl group would replaced with an R, as follows:
Explanation:
Read the scenarios below. For each of the scenarios, identify the following (you should identify the 3 for EACH of the scenarios):
Control Group Independent Variable Dependent Variable
A. John thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.
The following were required;
Dependent Variable - productivity of workersIndependent Variable - drinking the special juiceControl group - Group BWhat is a variable?A variable is a measurable quantity that changes in an experiment. The variable that is manipulated in the experiment is called the independent variable.
Now these are the variables that are involved in this experiment:
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chlorophyll a molecules absorb ____ light
chlorophyll is a molecule that absorbs red and blue light
What is the chlorophyll?Chlorophyll is a green pigment located in the mesosomes of cyanobacteria and in chloroplasts of plants used in photosynthesis.
The chlorophyll is known to absorb red and blue wavelengths from the sun.
Therefore, chlorophyll is a molecule that absorbs red and blue light.
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Which cellular process do scorpions most likely go through to
produce ATP?
A) anaerobic respiration
B) alcohol fermentation
C) lactic acid fermentation
D) aerobic respiration
Answer:
D) aerobic respiration
Explanation:
PLEASE HELP MEEE WITH THIS QUESTION
Answer:
2) 6) 3) 4)
Explanation:
The following factors will affect the current oxygen and carbon dioxide levels.
Burning fossil fuels increases the output of CO2 outside of organisms that perform cellular respiration-CO2 is a green house gas and is a cause of global warming. burning fossil fuels will increase CO2 in the atmosphere which cannot be balanced by the natural sinks like forests and oceans.Deforestation reduces the number of photosynthetic organisms able to produce oxygen and consume carbon dioxide. Deforestation causes habitat loss and hence a large amount of tree cover is lost which will reduce the amount of oxygen generated and CO2 absorbed.When land is deforested for agriculture, the photosynthetic productivity of crops is not equivalent to the forests being replaced. This is so because forests have large trees and plants which have a greater photosynthesis capacity however new crops which are small and are removed annually are not able to compensate for the loss of large forest trees.learn more about oxygen and carbon dioxide levels here:
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explain the terms of obligate categories discuss the various intermediate categories.
refer to the taxonomic groups that are consistently utilized in organism hierarchy classification. Sub-phyla, subclasses, suborders, subfamilies, subgenera, and variations are a few examples of .
:It is challenging to classify newly discovered creatures into established categories. As a result, the prefixes "super" and "sub" have been added to the existing categories, such as sub-kingdom, sub-phylum, super class, etc. These are categorized as . This has also made the placement of different taxa more soundly and scientifically.
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