If you get lost on a remote island, you should not drink the ocean water as your red blood cells would lose water
What is tonicity of cells ?
The cell of a red blood cell (RBC) shrinks when placed in a concentrated saline solution that contains more solute. Due to the diffusion process, which states that water moves from a high water concentration (RBC) to a low water concentration (saline water) when a cell is placed in a concentrated solution. As a result, a concentrated saline solution shrinks a red blood solution that has lost water.Because there are more solute particles outside the salt water than inside the cytoplasm, it is a hypertonic solution when compared to the internal liquid of the cell. As a result, the concentration gradient will cause water to osmosis out of the cells, causing them to shrivel up.The water molecules will osmosis into the RBCs from the solution if the salt solution is hypotonic in relation to them (salt solution is rarer in osmotically active particles than intracellular plasma), and this could cause the RBCs to rupture.The water molecules will osmosis out of the RBCs if the salt solution is hypertonic—the opposite of hypotonicity—leading to plasmolysis—the extensive shrinkage of the RBCs caused by a hypertonic environment.However, there may also be isotonicity—the concentration of osmotically active particles being the same in both the intracellular and extracellular fluids—between the two. There is no net movement of water molecules between the fluids due to this isotonicity. The approximate 0.3M (molar) NaCl solution yields this isotonicity.
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Bacteria with the ability to break down certain types of plastic are placed with a colony of E. coli bacteria that lack this ability. Plasmid transfer occurs between the two colonies of bacteria and some of the E. coli gain the ability to break down plastic as well. What inference can be drawn about the nature of plasmids from this observation? A. Plasmids are carbohydrates which provide structural support. B. Plasmids are lipids which provide energy for the cell. C. Plasmids are proteins which build tissues. D. Plasmids are nucleic acids which can pass on traits
Answer:
D. Plasmids are nucleic acids which can pass on traits
Explanation:
A Nucleic acid is one of the four biomolecule polymers in living systems. It is made up of monomeric units called Nucleotides. RNA and DNA are the two nucleic acids in existence and they function in storage and expression of genetic information.
According to the question, a colony of bacteria that can break plastics were mixed with the colony that can't break plastics. The two different colonies engage plamids, which conferred the ability to break plastics to some of the colonies that previously couldn't. This tells us that the ability to break plastics in the certain bacteria colony is GENETIC.
If the trait is genetic, the plasmid must be a nucleic acid because of the ability to genetically pass on traits. Note that, a plasmid is an extra-chromosomal DNA (nucleic acid) capable of replicating on its own. Hence, plasmids are nucleic acids which can pass on traits.
Match the hydrologic term to its definition.
surface runoff
subsurface runoff
groundwater runoff
groundwater discharge
ground water returns back to land
falling rainwater that gets absorbed into the soil
falling rainwater that flows over the ground
water that percolates into the aquifer
Answer:
Explanation:
Surface runoff: falling rainwater that flows over the ground.
Subsurface runoff: the water that infiltrates in the vadose zone; an example is falling rainwater that gets absorbed into the soil
Groundwater runoff: describes water pulled by gravity across land's surface, replenishing groundwater and surface water as it percolates into an aquifer.
Groundwater discharge: this describes movement of groundwater from the subsurface to the surface i.e. ground water returns back to land.
ground water returns back to land - groundwater discharge
falling rainwater that gets absorbed into the soil - subsurface runoff
falling rainwater that flows over the ground - surface runoff
water that percolates into the aquifer - groundwater runoff
edmentum
Which bone is indicated by the arrow in the diagram below? A diagram showing the appendicular skeleton. An arrow points to the bone in the lower arm closest to the body. humerus ulna radius clavicle
Answer:
ulna
Explanation:
The ulna runs parallel to the radius in the lower arm.
The ulna is in line with your pinky finger and is the bone closest to the body. The radius is in line with your thumb and allows you to rotate your wrist.
Hope that helps.
What is the correct order of
evolution of the major types
of pants?
A. Non vascular, Gymnosperm,
Vascular seedless, Angiosperm
B. Vascular seedless, Non
vascular, Angiosperm,
Gymnosperm
C. Non vascular, Vascular
seedless, Gymnosperm,
Angiosperm
D. Angiosperm, Gymnosperm,
Vascular seedless, Non vascular
Answer:
The correct order of evolution is C- Non Vascular, Vascular seedless, Gymnosperms, Angiosperms.
Explanation:
The first plants to evolve were the non-vascular bryophytes like fungi and algae.
The next to evolve were vascular plants that supported a vascular tissue system but lacked seeds.
Gymnosperms are vascular plants that have seeds.
The seeds produced in the gymnosperms could undergo fertilization easily as the wind acted as pollen carrier.
The next to evolve were angiosperms or flowering plants.
Flowering plants have highly modified shoots that carry male as well as female gametes.
Categorize the food items below by selecting which macromolecule they are known to contain.
apple
steak
celery
olive oil
potato
avocado
egg
Answer:
✔ carbohydrate
apple
✔ protein
steak
✔ carbohydrate
celery
✔ fat
olive oil
✔ carbohydrate
potato
✔ fat
avocado
✔ protein
egg
Explanation:
The apple, celery, and potato all contain the majority of the carbohydrates, the steak, egg, contain the majority of the protein; and the olive oil and the avocado both contain the fat.
What is the significance of carbohydrates and fats in the human body?These are the macromolecules, such as carbohydrates, which are the main part of the diet that is easily broken down to give rise to energy, and there are other sources of proteins and fats that perform the same functions. These foods are found in vegetables, fruits, nuts, and other foods and provide nourishment to the human body.
Hence, the apple, celery, and potato all contain the majority of the carbohydrates, the steak, egg, contain the majority of the protein; and the olive oil and the avocado both contain the fat.
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Which endocrine gland is indicated by the arrow?
pineal gland
adrenal gland
hypothalamus
ovary
A human body with endocrine glands are shown. The glands on the kidneys are indicated by the arrow.
Answer:
its the adrenal gland B on ENG 2022
Explanation:
The glands on the kidneys are indicated by the arrow, and the gland is called the adrenal gland which is present in the second option, and there are two adrenal glands on the two kidneys of the human body.
What is the importance of the adrenal glands in humans?The adrenal glands are two small glands located on top of the two kidneys that play an important role in the endocrine system because they produce hormones that help regulate a variety of important functions, such as metabolism, immune system function, and the stress response by releasing hormones like adrenaline, cortisol, and epinephrine, etc, while adrenaline, is released in response to stress or danger, it increases heart rate, blood pressure, and glucose levels, preparing the body for stress.
Hence, the glands on the kidneys are indicated by the arrow, and the gland is called the adrenal gland, which is present in the second option, and there are two adrenal glands on the two kidneys of the human body.
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What is your hypothesis for the numbers of each phenotype after 32 fertilizations (HINT: Use a Punnett square to come up with the ratio and then determine how much of each if you have 32 individuals.)
Answer:
I need more clarification on what to use in the punnet square
Explanation:
Do you know the answers, even just one?
Answer:
1.answer is B
Explanation:
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What is a biome i need help on this
Answer:
A biome is a large area with a unique climate. The plants and animals share common characteristics in the environment they live in.
Examples of biomes are tundra, forests, grasslands, and deserts.
Answer:
This is a community of plants and animals that have common behaviour for the place they live in.
Explanation:
They are found in a range of continents.
When a long bone is fractured at the epiphyseal plates, how will the fracture affect the bone’s growth?
Answer:
when the bone gets fractured at the epiphyseal plates the treatment should be done quickly , but if it is not treated immediately then it will affect the growth which may cause long and short limbs. so, if there is fracture in epiphyseal plates it should be treated very soon.
hope u will understand it.
Which fat has only single bonds between the carbon atoms in the fatty acid? saturated unsaturated polyunsaturated monounsaturated
Answer:
the answer is A, saturated
Explanation:
I just took the quiz on edge
Saturated fatty acids have single bonds between carbon atom and fatty acid. The correct option is A.
What are saturated fatty acids?Saturated fatty acids are composed of a carbon chain that contains no double bonds.
Even though fatty acids are structural components of cell membranes, this saturated arrangement adds to reduced cell fluidity.
These are not required nutrients. They are obtained primarily through the consumption of animal fats.
One of the two primary kinds of fat is saturated fatty acids. Stearic acid, palmitic acid, myristic acid, and lauric acid are examples of typical dietary saturated fatty acids.
Saturated fatty acids have hydrocarbon chains that are solely linked by single bonds. There are one or more double bonds in unsaturated fatty acids.
Thus, the correct option is A.
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Mackerel live in the surface waters of the sea. Toadfish live on the seabed in deep water.
(b) The concentration of oxygen is higher in the surface waters than it is in water close to the
seabed. Suggest why.
Answer:D
Explanation:
i just took the test
9. Earth's crust and uppermost mantle form the
O lithosphere
O asthenosphere
O hydrosphere
O atmosphere
Answer:
lithosphere
Explanation:
The lithosphere is the outer part of the earth, consisting of the crust and uppermost mantle.
Answer:
Lithosphere
Explanation:
Earth's lithosphere. Earth's lithosphere includes the crust and the uppermost mantle, which constitutes the hard and rigid outer layer of the Earth. The uppermost part of the lithosphere that chemically reacts to the atmosphere, hydrosphere, and biosphere through the soil-forming process is called the pedosphere.
Have a good day and stay safe!
A_____ Cell is one that has one copy of each chromosome
Answer: Haploid
Explanation:
A Haploid cell that has only one copy of each chromosome which can be paternally or maternally-derived
I hope this helped
Lysis is best describes as
Answer:
The destruction of the cell by rupture of the cell wall or cell membrane.
Explanation:
Lysis refers to the breaking of the cell wall or cell membrane. Without the cell wall or cell membrane, the cell wouldn't be able to hold its structures or its shape anymore. You can think of it as a cell exploding without its cell wall or cell membrane.
Please answer this biology question
Answer:
1. The objective lenses on a compound light microscope sample can be magnified either, 40x, 100x or 400x as it does have powers 4x, 10x, and 40x on the maximum power setting.
At 40x magnification Stella will see cell upto 5mm.
At 100x magnification Stella will be able to see cell and cell components upto 2mm.
At 400x magnification Stella will be able to see cell and cell structures more closely, 0.45mm, or 450 microns.
2. The white blood cells are stained here in purple and can be identified with their shape and size of nucleus in comparison to the red blood cells have bioconcave shape and smaller to the wbc, but the function of white blood cells does not allow them to have a set shape. And the white transparent part are platelets.
Where is our sun located in the Milky Way?
O at the tip of one of the spiral arms
O within one of the spiral arms
O at the exact center of the galactic nucleus
O in the galactic halo
Answer:
B is the answer
Explanation:
The sun is located within one of the spiral arms, the Orion Arm to be exact.
What is the effect of the inheritance of one trait on the inheritance of a second trait?” with a hypothesis. Remember that you can either assume that the two genes are independent or that they are linked. What results would you expect in either case?
Hypothesis:
Study the image. Note that the sediment sizes are labeled A, B, and C. Which type of sediment will be deposited first? Which type of sediment will be deposited last?
Answer:
Sediment C and A
Explanation:
took test rn
Answer:
The first answer is C
The second answer is A
Explanation:
I did it on and got it correct
A wave is known to have a frequency of 20 Hz and wavelength of 0.5 m. Find the velocity of this wave.
Answer:
take 20 * 0.5 to get 10 m/s
Explanation:
What is an important relationship animals have with other organisms in their habitat?
Then they classify the ecological relationships they observe as mutualism, commensalism, and ... predation—behavior of one animal feeding on another ... parasitism—a symbiotic relationship where one organism benefits and one is harmed. 2. ... Have students use a Crittercam video to identify ecological relationships.:
8) The plasma membrane is composed of a double layer of molecules called
molecules, which have a
head and 2
tails pointing toward each other. The mechanical stability of the membrane lies with
molecules. The protein molecules function in
and
Answer:
Your answer would be Phospholipids
Explanation:
The phospholipid bilayer that makes up the plasma membrane has hydrophobic tails and polar heads that face each other to repel water.
What is a plasma membrane?The membrane that divides the inside of the cell from the external environment is known as the plasma membrane, sometimes known as the cell membrane, and it is present in all cells.
A cell wall is affixed to the plasma membrane on the outside of both bacterial and plant cells. The plasma membrane is made up of lipids and proteins, much like every other cellular membrane.
Therefore, the phospholipid bilayer, which creates a permanent barrier between two aqueous compartments, is the membrane's basic structural component.
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ASAP How do animals store energy? A. As Glycogen in granules. B. As cellulose in plastids. C. As starch in granules. D. As glycogen in plastids.
Answer:
How do animals store energy?
A. As starch in granules.
B. As cellulose in plastids.
C. As Glycogen in granules.
D. As glycogen in plastids.
Explanation:
The answer is glycogen in granules because only plant cells can have plastids. Animals store energy by using glycogen for quick energy and will store it in granules. This is why the answer is C. As Glycogen in granules.
The animals store energy in the form of glycogen granules. The correct option is A.
What is glycogen food?Glycogen is a multibranched polysaccharide of glucose that acts as an energy storage system in animals, fungi, and bacteria.
The polysaccharide framework is the primary form of glucose storage in the body.
Thus, the correct option is A.
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All of the following are efforts to save a species close to extinction EXCEPT ? genetic preservation. fragmentation. captive-breeding programs. zoos and aquariums.
Answer:
fragmentation
Explanation:
People who inherit familial periodic paralysis often develop very low blood potassium
concentrations. How would you explain that the paralysis may disappear quickly when potassium
ions are administered intravenously?
Animals in the same phylum may have different nervous system structures. For example, octopuses have large, complex brains while clams have a simple _____ network.
Answer:
The answer is ring - like
Clams have the ganglia that form a ring around esophagus and that is why this network is called ring - like.
hope this answer correct (^^)..
Which component of Earth’s atmosphere is decreased due to photosynthesis? ozone oxygen hydrogen peroxide carbon dioxide
Answer:
The answer is carbon dioxide
Hope this helps you
Answer:
carbon dioxide
Explanation:
2. The theoretical new force that may be causing an increase in the speed of
O the big bang
O light theory
O dark energy
the big crunch
Answer:
Dark energy
Explanation:
A mysterious force that repels gravity
Sort the units based on the measurement system they're use in
Answer:
is there a picture of it?
What do you think of genetic engineering? Are GMO's good or bad?
With genetically engineering humans, should we be tampering with the human genome? Do you think humans can stick to a limit (only curing diseases) or do you think humans would begin engineering people?