Isotonic, hypertonic, and hypotonic refers to the concentration of solutes present in a solution in comparison to another solution.
In this case, they refer to a solution that surrounds animal cells.
When a solution is isotonic, it means that has the same concentration as the other, in this case, the cytosol of the cell, so there is no water flow across the cell membrane.
When the solution is hypotonic, water diffuses to the interior of the cell, which has a greater concentration of solutes, and in an animal cell this can cause the rupture of the cell, in opposition to what would happen in a plant cell, where the cell wall prevents this from happening.
And in the case of a hypertonic solution, as the concentration of solutes is greater outside the cell, the water leaves the cell.
This means that, from the options, a hypotonic solution can be more harmful to an animal cell (option C).
Albinism, caused by the non-production of tyrosinase, is an autosomal recessive condition, a woman of normal pigmentation, whose father was albino, marries an albino man. What is the probability that of 6 children procreated, the first is albino, the second is of normal pigmentation, and of the next 4, 2 are of normal pigmentation and 2 is albino?
Select one:
a. 37.5%
b. 25%
c. 50%
d. 9.5%
The probability that of 6 children procreated, the first is albino, the second is of normal pigmentation, and of the next 4, 2 are of normal pigmentation and 2 is albino is C. 50%.
How to calculate the probability?Probability simply means the likelihood that something will occur.
In this case, albinism, caused by the non-production of tyrosinase, is an autosomal recessive condition whereby a woman of normal pigment marries an albino man.
In this case, there are 3 albino and 3 normal pigmentation based on the information.
This will be:
= 3/6 × 100
= 50%
The probability is 50%.
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Which of the following is most likely to be part of a country's sustainable forest management policy?
The probable option would be to encourage the reseeding of old-growth forests that have been logged.
On a weather map lines joining places with same air pressure are
Answer:
Isobars: lines of constant pressure. A line drawn on a weather map connecting points of equal pressure is called an "isobar". Isobars are generated from mean sea-level pressure reports and are given in millibars.
You're working in the rainforest and discover a new species. You get to name the species. What must be included in this name, and how is it written?The name must include the genus and species of the new organism. It must be written in bold with the species name lowercase.The name must include the genus and species of the new organism. It must be written in italics with the species name lowercase.The name must include the domain and the species of the new organism. It must be written in italics with the species name lowercase.The name must include the genus and species of the new organism. It must be written in bold with the species and genus name in lowercase.
The correct option is: The name must include the genus and species of the new organism. It must be written in italics with the species name lowercase.
Species names have two parts, the genus, which could be shared by many species and the specific name, which is unique to each species. Species names are in italics, cause they are in a foreign language, latin. For example, Homo sapiens.
In the monument Valley desert, the antelope jackrabbits, the white-tailed jackrabbits, and the black-tail jackrabbits make up which of the following
A population
Part of a community
Part of an ecosystem
In the monument Valley desert, the antelope jackrabbits, the white-tailed jackrabbits, and the black-tail jackrabbits make up a Part of Community.
An ecological community is a collection of organisms that coexist or may coexist in a given area. Communities are connected by a shared environment and a web of relationships between the many species.
The antelope jackrabbits, the white-tailed jackrabbits, and the black-tail jackrabbits are coexisting together and are of different species thus form a community.
An ecological community is a trophic structure made up of trophic compartments and is the collection of organisms in groups that feed and are devoured by one another from a theoretical systems perspective (food chain and food web).
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Answer:
Explanation:
part of a community
part of an ecosystem
What term refers to the growth and/or elongation of some cells but not others?
a.
growth changes
b.
cell lengthening
c.
divergent growth
d.
differential growth
Growth changes refers to the growth and/or elongation of some cells but not others.
The correct option is A.
How is a cell defined?A cell is a collection of cytoplasm that is held together on outside by a cell membrane. Cells are the fundamental structural units of living matter and make up all living things. They are usually tiny in size. Numerous organelles, including one or more nucleus, are present for most cells and perform a range of functions.
What is cell function?They give the body structure, absorb nutrients from meals, turn those into energy, and perform certain tasks. Additionally, cells are able to replicate themselves and carry the body's genetic material.
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NEED HELP FAST 50POINTS How does the richness of an Ecosystem, contribute to it's health?
Answer:
The more stuff in an ecosystem, the more self-reliant it can be, and the healthier it is.
The scientists have continued to study a new area in South Africa, and they want to predict how many wild dogs could occupy this area. Here are some facts about the new area. In the new area:The wild dogs will feed on Impala and Kudu. The growth rate of the impala and kudu is similar to the rate in Northeastern SA and Northern SAThe prey density is twice as high as in Northern SA (30 Impala / km2 and 8 Kudu per km2)The average rainfall is between 400 and 650The amount of available prey biomass is similar to Northeastern SAHow many wild dogs could this area support?2412366
We have the data of the known areas
The new area is similar to Northeastern SA and Northen SA in terms of the type of prey and the growth rate, as well as rainfall.
And even if the density is greater, the total biomass is similar to Northeastern SA, so the population that the new area can support must be similar to the one in there.
Northeastern SA has an area of 1000 km2, so, according to the next graph, it can sustain at least 29 individuals. This means the new area should be able to support around that same quantity.
Given the information and from the options, the answer would likely be 36.
I need help with this question
Due to the fact that lipids may be broken down to produce significant amounts of energy, one of the lipids' primary biological purposes is to store energy.
What is the function of lipids?Since lipids may be broken down to provide significant amounts of energy, storing energy is one of their primary biological purposes. Additionally, lipids create many signaling and messenger molecules in the body, as well as the structural elements of cell membranes.Triacylglycerols, phospholipids, and sterols are the three primary categories of lipids.Lipid accumulation in microorganisms is a biological process that serves a variety of purposes.Lipid storage aids in cell growth, cell division, the reaction to stress, and the storage of energy for survival. Lipid buildup contributes to pathogenicity in some situations.To learn more about lipids, refer
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Please help with the question below.
Explanation:
the cycling of the oxygen is from the plant to the sea upwards to the sky to the sun
the cycling of the carbon dioxide is from the plant itself also from the mosquito larvae to the algae and to the air
Why does air have to be removed from the canister of an electron microscope?
a) to kill the specimen
b) to keep the specimen from moving around
c) an explosion would occur
d) to prevent the operator from becoming contaminated
e) the air would interfere with the electrons
Air has to be removed from the canister of the electron microscope because the air would interfere with the electrons (option E).
What is electron microscope?Electron microscope is any of the several forms of microscope that use a beam of electrons, rather than one of light, and thus has a much greater resolving power.
Electron microscopes are very powerful biological tools used to visualise variety of samples. They are used by scientists to view cells, tissues and small organisms in details. However, it should be noted that these living samples cannot be viewed on electron microscopes.
The vacuum inside the electron microscope is one reason why living samples cannot be viewed. The beam of electrons being aimed at the sample would be deflected when they hit air particles if the vacuum is not present.
Therefore, it can be said that the air is one component that must be eliminated to allow a direct passage of electrons.
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Which means that a female produces an egg that retains inside the her until it hatches?A) OviparousB) OvoviviparousC) ViviparousD) Self incubation
Traditionally, there are three modes of reproduction:
• Oviparity,, where the embryos develop in an egg outside the parent. For example, chickens.
,• Viviparity,, where the younglings develop inside the body of the parent, are supported by them, and are born live. For example, humans.
,• Ovoviviparity,, where the embryos develop inside the parent but without depending on them, usually means the ,production of an egg that is retained until it hatches., For example, white sharks.
This means B is the correct answer
give reason for some enzymes have a reversible effect
The reason that some enzymes have a reversible effect is-
The ability of an inhibitor to attach to an enzyme non-covalently and easily dissociate from it is known as reversible inhibition. In a process known as competitive inhibition, the inhibitor, which mimics the substrate, attaches directly to the enzyme's active site and blocks the enzyme's function.
What are enzymes?Proteins called enzymes speed up chemical reactions and serve as biological catalysts. The molecules that enzymes can interact with are referred to as substrates, and the enzyme changes the substrates into new molecules known as products. In order to occur at rates quick enough to support life, almost all metabolic processes in the cell require enzyme catalysis.
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True or FalseNatural selection goes from more to less complex over time as adaptations are weeded out through natural selection.
The statement is false
Explanation:
This is a subject that is still being debated, however I believe that:
-the theory of evolution by natural selection explains the emergence of biodiversity
Explain how the structure of the each macromolecule helps it do its function
Carbohydrate
Lipid
Protein
Nucleic Acid
Carbohydrate is a large structured biomolecule consisting of carbon , hydrogen and oxygen , Lipid in its structure have bilayer in its structural form, protein is made of 100 units of alfa amino acids.
What is the structure of carbohydrate, protein and Nucleic acid?Structure of carbohydrate can be best explained by the structure of combining hydrogen, oxygen and carbon.Protein are polypeptides which is a linear chain of amino acids linked by peptide bonds.In the acid insoluble fraction we find a kind of macromolecule called Nucleic acid present in living tissue.The heterocyclic ring structure of purine and pyrimidine best represents the structure for nucleic acid.To know more about Nucleic acid visit:
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In the graphs shown, which number shows a population that is most likely to create a new species?
a) 1
b) 2
c) 3
d) none of them
which pair of words has one bone each from the axial and appendicular skeletons
The pair of words that has each bone from axial and appendicular skeleton is: (1) cranium; femur.
Cranium is the skull bone that protects the brain from any mechanical injury. It belongs to the axial skeleton. Femur is the thigh bone, It is the thickest, strongest, and longest bone of the body. It is the part of appendicular skeleton.
Axial skeleton is the composition of bones that make up the core of the body. There are a total of 80 bones in the axial skeleton. This includes the bones of the skull, ear, neck, back, and the ribcage. Whereas the appendicular skeleton comprises the bones of the hands and legs.
The question in incomplete, the complete question is:
Which pair of words has one bone each from the axial and appendicular skeletons?
cranium; femurfemur; tibiaforamen; ramuspatella; femurTo know more about axial skeleton, here
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 Please HELP!!!?! Describe competitive and noncompetitive in inhibitors describe how mutations can lead to resistance with non-competitive inhibitors
The competitive inhibitor substrate from binding there. The non competitive on the enzyme it doesn't block substrate binding, changes in the enzyme so that it can no longer catalyse the reaction.
What is an example of a inhibitor?Irreversible inhibitors, such as Acyclovir, which target the enzymes that copy viral DNA to treat herpes, are four instances of enzyme inhibitor medications. competitive inhibitors, such methotrexate, which treats bacterial infections as well as cancer. Trazadone is a non-competitive inhibitor used to treat depression.
What purposes do inhibitors function?Inhibitors Enzyme inhibitors are substances that alter the enzyme's catalytic capabilities. As a result, they reduce the enzyme's ability to catalyze reactions or, in extreme cases, completely stop them. These inhibitors function by obstructing or changing the active site.
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What is the answer?
2a. The enzyme called Pheide a Oxygenase (PAO) catalyses the degradation of chlorophyll. Mendel’s I gene (yellow peas) codes for this enzyme. If this gene is mutated, what will happen to the pea colour? 2b. What was discovered when looking at the PAO levels between heterozygous and homozygous plants? 2c. Gibberellin is a plant hormone that promotes the elongation of plant stems. It is produced in a series of reactions requiring an enzyme coded for by a specific gene. If this gene is isolated, and mutated, how will this affect the height of the plant? 2d. Mendel’s R gene (round peas) codes for the enzyme Starch-branching enzyme isoform (SBEI) which forms 1,6 linkages in starch, producing Amylopectin. If 1,4 linkages were produced instead, what type of starch would be formed? This would cause the peas to display recessive traits. How will the peas look and taste?
2a. Yellow peas are dominant (Y). Green peas are recessive (y). Peas that are green in color are immature peas. When the pea ripened, the chlorophyll will broken down in the pathway. The pea will eventually turns to yellow. The enzyme responsible for this process is Pheide a Oxygenase (PAO) .
If the gene is mutated, PAO will not be produced. Pea will remain green because chlorophyll will not be broken down.
In the graph shown here, the lynx population. peaks ______ the hare population.
A. just before
B. long before
C. long after
D. just after
In the graph shown here, the lynx population peaks long after the hare population.
Population- A population is an identified grouping of objects with the purpose of analysis & data collection. Examples include people and animals. It comprises of a related collection of species that live in a specific area and have the ability to interbreed.
The study of population dynamics, or population biology, provides data essential to biological studies. Additionally, it aids in the prevention of agricultural pests and the preservation of rare and endangered species. Examples include the American, Indian, and Chinese populations as well as the overall public of a city.
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Help please thank you!!
outline characteristics of living organisms
Answer:
movement
respiration
nutrition
irritability
growth
excretion
reproduction
adaption
HURRYYYY
Even after pesticides are approved for use and sale, companies must continue testing them to ensure they do not cause long-term harm to wildlife or the environment.
True or False
Answer:
TRUE
Explanation:
2. Explain how the different types of planets in the solar system illustrates how the density was distributed throughout
the period of planetary formation.
Different types of planets in the solar system illustrate density distribution throughout the period of planetary formation. Mercury, Venus, Earth and Mars are dense whereas Jupiter, Saturn, Uranus and Neptune are less dense.
The Solar System consists of the Sun with eight planets orbiting it. The four inner planets are those closest to the Sun .They are Mercury, Venus, Earth, and Mars. They are smaller and composed of metals and rocks and hence are dense. The four outer planets are Jupiter, Saturn, Uranus, and Neptune. They are larger and mostly made of gases, so the overall density is low A planet's density is related to its composition.
Mercury is the smallest in size. Earth and Venus are almost the same size, whereas Mars is about half their size.
According to the nebular hypothesis, Uranus and Neptune exist in a region where the density of the solar nebula is reduced and longer orbital times is longer . The two are thought to have formed in orbits near Jupiter and Saturn, where more material was available, and to have migrated outward to their current positions over hundreds of millions of years.
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Why is diffusion considered a form of passive transport?
Responses
A It has no effect on the health of the cell.
B It's carried out while the cell does other things.
C It's a process that occurs automatically.
D It requires no energy from the cell.
Answer:
D It requires no energy from the cell.
Explanation:
The diffusion considered as a form of passive transport because it requires no energy from the cell. Thus, option D is correct.
What is diffusion?Diffusion has been known as the process in which molecules of the solvent pass via a semipermeable membrane from a lower concentrations to higher concentration or from less concentrated solution to high concentrated solution. In the process of diffusion movement of water takes place.
There are mainly three types of osmosis and these are hypertonic, hypotonic, and isotonic. The process of osmosis has been passive transport as water moves from low solute concentration to the high solute concentration.
Therefore, The diffusion considered as a form of passive transport because it requires no energy from the cell. Thus, option D is correct.
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1. Most life on Earth depends either directly or indirectly on photosynthesis. Which statement describes the basicfunction of photosynthesis?A. Energy is released for DNA to use during cellular respirationB. Sunlight energy is converted into chemical energy stored in glucoseC. Food energy is produced in the form of proteins for other organisms to consumeD. Energy from ATP is used to convert water and oxygen into carbohydrates and carbon dioxide
Photosynthesis is the process by which autotrophic organisms obtain energy, being the statement that describes the basic function of photosynthesis the: B. sunlight energy is converted into chemical energy stored in glucose.
What is the article, "World Without Waste" by Rick
about.
The article, "World Without Waste" by Rick is all about about recycling as well as reuse as a part of sustainable packaging form of initiatives.
What is the "World Without Waste" about?There are a lot of plastic trash litters the seashore close to Athens, Greece. For every person on the planet, the globe has produced more than 1 metric ton of plastic, much of which is said to be clogging up the oceans and the environment.
Landfills are overflowing with plastic garbage, polluting cityscapes, choking waterways with vast fields of detritus, and killing aquatic life that eats everything from used fishing gear to disposable food containers.
Hence, Environmentalists and others want to limit plastic trash by recycling it or lowering the amount of plastic that is produced.
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What is the ionosphere and how does it form?
Answer:
The Ionosphere is part of Earth's upper atmosphere, between 80 and about 600 km where Extreme UltraViolet (EUV) and x-ray solar radiation ionizes the atoms and molecules thus creating a layer of electrons. the ionosphere is important because it reflects and modifies radio waves used for communication and navigation.
Explanation:
Describe two ways that each of the following pairs are similar with each other and two ways in which they differ from each otherdesmosomes vs. tight junctions
Both desmosomes and tight junctions are clusters of proteins that act by binding membranes of adjacent cells. However, they have some differences. While desmosomes cross the plasma membrane and thus provide a stronger bond, the tight junction proteins (claudins) remain on the outside of the membrane and bind to the claudins of other cells; therefore, they provide a less strong binding than desmosomes, but function to make the tissue impermeable. The bladder is an organ that possesses many tight junctions.
In conclusion:
Similarities:
1- They bind cell membranes
2- They are composed of proteins
Differences:
1- Desmosomes go through the membrane, tight junctions do not.
2- Desmosomes are a stronger junction that holds the tissues together.
Tight junctions are less strong and their main function is to maintain an impermeable barrier.