Answer:
Biodiversity
Explanation:
Poverty, political instability, deforestation, overgrazing, rain runoff, changing wind patterns, and bad irrigation practices are the causes of desertification,
"The correct option is b. Biodiversity.The option that is not a cause of desertification is biodiversity."
Desertification is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture. Let's consider each of the options provided:
a. Deforestation: This is a primary cause of desertification. When trees are removed, the land is exposed to erosion, and the loss of vegetation can lead to a decrease in rainfall and an increase in land temperatures, exacerbating desert-like conditions.
b. Biodiversity: Biodiversity itself is not a cause of desertification. In fact, high biodiversity can help prevent desertification by providing a resilient ecosystem that can withstand environmental pressures. Therefore, biodiversity is not a cause but rather a potential mitigating factor against desertification.
c. Overgrazing: This is another cause of desertification. When livestock consume too much of the available vegetation, it can lead to soil compaction and erosion, reducing the land's ability to absorb and retain water.
d. Over-irrigation: While it might seem counterintuitive, over-irrigation can lead to desertification. Excessive irrigation can cause salts in the soil to rise to the surface, leading to salinization, which makes the land less fertile and more desert-like.
What is the role of a control group in any experiment?
Answer:
Serves as a baseline to compare experiment results to
Explanation:
The control group recieves no minipulation from the independent variable of an experiment which provides a baseline to compare the results to and evalutate the effects of the minipulated variable.
Convert 11.75 millimeters to meters. meters
Answer:
0.01175 meters
1 m =1000 mili meters
11.75 mili meter = 11.75 X 10^-3
Answer: 0.0118 meters
Explanation:
The role of rRNA in gene expression is to?
Answer:
The correct answer is rRNA plays an important role during translation (protein synthesis) of mRNA.
Explanation:
Ribosomal RNA or rRNA are the RNA molecules which build up the site for protein synthesis known as ribosomes.
Ribosome synthesis takes place in nucleolus where two types of rRNA molecules associates with proteins, one in large subunit and one in the small subunit to form ribosomes.
These ribosomes physically moves along an mRNA molecule and catalyze the assembly of amino acids where rRNA molecules performs the catalytic steps of protein synthesis that is stitches amino acids together and makes up proteins.
Thus, rRNA plays an important role during translation (protein synthesis) of mRNA.
ANSWER:
The role of rRNA (Ribosomal RNA) in gene expression is to form part of the ribosome.
REFERENCE:
3.3 Determine the information flow from DNA to RNA to direct the synthesis of proteins
DNA, RNA, and the Development of Multicellular Organisms READING ASSIGNMENT
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3.4 Investigate genetics with respect to human inheritance and DNA mutations
DNA Replication READING ASSIGNMENT
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Based on the body structures of these animals, which two conclusions are scientifically sound?
Answer:
what are the animals?
Explain why a gene pool cannot be made up of only one individual
Answer:
All the possible alleles for a gene with multiple alleles cannot be expressed by single individual
Explanation:
Gene pool refers to the sum total of all the alleles of all the genes which are present in a population. Human beings are diploid organisms. One individual can have only two possible alleles for a gene. A gene can have two or more than two alleles. Since all the possible alleles for a gene with multiple alleles cannot be expressed by single individual, a gene pool cannot be made of one individual.
Give an example of an organism with the following: asymmetry, bilateral symmetry, and radial symmetry.
Asymmetry - Sponge
Bilateral - Lobster
Radial - Hydra
Distinguish between structural and optical isomers in carbohydrates, describing examples of each.
Answer:
STRUCTURAL isomers have the same molecular formula but their atoms are linked in different sequences. For Example, fructose and glucose are structural isomers because, although they have the same molecular formula (C6H12O6), glucose contains an aldehyde group (it is an aldose) and fructose contains a keto group (it is a ketose).
In contrast, OPTICAL isomers are identical in every way except that they are mirror images of each other. The two ring forms of glucose, alpha and beta glucose, are optical isomers, being two mirror image forms.
Final answer:
Structural isomers have the same molecular formula but different structures, while optical isomers differ not only in structure but also in three-dimensional arrangement. An example of a structural isomer in carbohydrates is glucose, and an example of an optical isomer is d-glucose.
Explanation:
Structural isomers are organic compounds with the same molecular formula but different structures. They differ in the arrangement of atoms and cannot be converted from one to the other without breaking covalent bonds. An example of a structural isomer in carbohydrates is glucose , which has different structural forms known as the d- and l- isomers.
Optical isomers, also known as enantiomers, are a type of isomer that not only differ in structure but also in three-dimensional spatial arrangement. Optical isomers are optically active, meaning they can rotate plane-polarized light in opposite directions. An example of an optical isomer is d-glucose, which has four chiral carbons that cause it to rotate light in a specific direction.
All Bacteria are ___________.
A. Prokaryotes
B. Eukaryotes
C. Unicellular
D. Multicellular
E. Autotrophs
F. Heterotrophs
A. Prokaryotes
C. Unicellular
D. Heterotrophs
They are all Prokaryotes
Liverworts and mosses were some of the earliest land-based plants. Which statement correctly explains why these species are still restricted to growing in moist environments? A. They can't absorb water through their roots and must do it through their leaves. B. Their gametes must swim in order to interact and for fertilization to occur. C. They don't have cell walls to retain moisture in their cells and dry out otherwise. D. Their seeds must absorb water in order to germinate.
Answer:
B. Their gametes must swim in order to interact and for fertilization to occur
Explanation:
Answer: B. Their gametes must swim in order to interact and for fertilization to occur.
Explanation:
Liverworts and mosses are the primitive plants used to have evolved from the aquatic life to terrestrial life. These plants are bryophytes and they do not exhibit true roots, stems and leaves. The reproduction in these organism is facilitated by water as the gametes swims in the water. The fusion or fertilization of the gametes takes place in water.
A manufacturing plant has been found guilty of polluting the nearby river. This is _______ pollution. A. water-table B. open-field C. nonpoint source D. point source
Answer: D. Point source
Explanation:
The point source pollution is caused by a single pollutant the origin of which is known and can be easily track back. For example a sewage drainage or industrial discharge in an water body.
The manufacturing plant was found guilty of polluting the water is the example of point source pollution because it's source of origin is single, known and can be track back.
Answer:
D. point source
Explanation:
Which is the relationship between photosynthesis and cellular respiration?
Answer:
Photosynthesis and cellular respiration are connected through an important relationship. This relationship enables life to survive as we know it. The products of one process are the reactants of the other. Note that the equation for cellular respiration is the direct opposite of photosynthesis:
cellular respiration: C 6 H 12 O 6 + 6O 2 → 6CO 2 + 6H 2 O
photosynthesis: 6CO 2 + 6H 2 O → C 6 H 12 O 6 + 6O 2
In both processes, energy is generated at the cellular level
Explanation:
Photosynthesis makes glucose that is used in cellular respiration to make ATP. Glucose is converted back to carbon dioxide, which is used in photosynthesis. While water breaks down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the oxygen released that is used by us and other organisms for cellular respiration. We breathe that oxygen, which is transported through our blood to all our cells. In our cells, oxygen allows it to process cellular respiration. Cellular respiration works best in the presence of oxygen. Without oxygen, much less ATP would be produced.
Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the path through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis takes carbon dioxide out of the atmosphere. The exchange of carbon dioxide and oxygen during photosynthesis (Figure below) and cellular respiration throughout the world help to maintain atmospheric levels of oxygen and carbon dioxide at a stable level.
Photosynthesis and cellular respiration are interrelated, photosynthesis captures sunlight to turn water and carbon dioxide into glucose and oxygen, while cellular respiration uses oxygen to break down glucose, thereby releasing energy and creating water and carbon dioxide. These processes complement each other, forming a cycle of energy conversion and matter recycling in ecosystems.
Explanation:The relationship between photosynthesis and cellular respiration is quite intricate as they are interrelated, complimentary biological processes. Photosynthesis is a process that occurs in plants, where energy from sunlight is captured and used to convert carbon dioxide and water into glucose (a carbohydrate) and oxygen. On the other hand, cellular respiration is a process that happens in all living cells, where glucose is broken down in the presence of oxygen to produce carbon dioxide, water, and release energy.
Thus, the output products of photosynthesis serve as the input reactants for cellular respiration and vice versa, creating a sustainable cycle of energy conversion and matter recycling in the ecosystem.
One uses light energy absorbed by chlorophyll to produce organic molecules, while the other breaks down those molecules to harness the stored chemical energy. Plants being unique, contain both chloroplasts for photosynthesis as well as mitochondria for respiration. These reciprocal interactions between photosynthesis and cellular respiration make them powerhouse processes that allow organisms to survive, grow, and reproduce.
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how can the central dogma help us understand the process by which dna is turned into protein? what are the two steps involved in the process of gene expression?
Answer:
Read Below
Explanation:
The central dogma is the process of creating a protein from DNA.
Steps:
DNA->Transcription->mRNA->Translation->Polypeptide
Gene expression is done through the central dogma steps. The two steps would be transcription and translation
Answer:
The central dogma states that DNA contains the genetic code needed to make proteins—a process known as gene expression. Transcription and translation are the two steps involved in gene expression. In transcription, the DNA code is turned into RNA. In translation, the RNA sequence provides instructions to the cellular machinery to manufacture polypeptides, which become proteins.
Explanation:
if a dolphin is producing a vocalization with a frequency of 35Hz traveling at 1,470 m/s what is the wavelenghth of the sound
Answer:
42
Explanation:
If you divide the m/s and the frequency it will bring you to the wavelength of the sound.
1,470/35=42
42 is the wavelength of the sound.
The wavelength of a sound produced by the vocalization of a dolphin with a frequency of 35 Hz and a speed of 1,470 m/s would be 42 m
The speed or the velocity of a traveling wave is the product of its wavelength and its frequency. In other words:
V = λf, where V = speed/velocity, f = frequency, and λ = wavelength.
In this case, V = 1,470 m/s and f = 35 Hz
λ = 1470/35
= 42 m
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How are cellular respiration and photosynthesis related?
A.
Both occur in the nucleus.
B.
Plants only need photosynthesis.
C.
The output of one is the input of the other.
D.
Photosynthesis requires enzymes and respiration does not.
Answer: C. the output of one is the input of the other
Cellular respiration is interrelated with photosynthesis because the product of photosynthesis is a substrate for cellular respiration, hence option c output of one is the input of the other.
What is the relation between photosynthesis and cellular respiration?Photosynthesis is a light-dependent process to make metabolic product glucose for energy, a carbon-containing compound.
Cellular respiration is the process to extract energy from metabolic products and convert into the form of ATP, this ATP is used by cells as an energy currency.
Cellular respiration depends on photosynthesis for the metabolic substrate to extract energy during the process.
Therefore photosynthesis is related to cellular respiration, the output of one is the input of the other process, hence option c is correct.
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Hawaii's lush tropical forest arose from a process of...
Answer:
I think the correct answer is succession.
Explanation:
In biology, succession is the order in which species appear in an ecosystem over time.
In this case, Hawaii's lush tropical forest arose from a process of succession because its lush took its time to develop.
hope this helps :)
I need Help please anyone
Answer: A
Hope this helps
Which level of biological classification is the lowest level that butterflies (invertebrates) and dogs (vertebrates) have in common?
Answer:
Kingdom
Explanation:
The lowest level would be Kingdom, specifically, Kingdom Animalia. The next biological classification would be Phylum and at this point vertebrates and invertebrates are categories into different phyla. Butterflies belong to the phylum arthropoda, while dogs are classified into phylum chordata.
Answer:b
On edge
Explanation:
The main result of photosy
nthesis is
Oxygen gas released into atmosphere
Answer:
In plants, glucose is produced as a result of photosynthesis. Plants need the energy glucose provides in order to grow and reproduce. Glucose is also required for the process of cellular respiration, in which plants convert carbon dioxide from the air into oxygen.
not mine! source: https://sciencing.com/produced-result-photosynthesis-7189979.html
What part of the cell does 9 represent? :)
Answer:
The correct answer would be the lysosome.
Explanation:
Small organelles can be found in the cytoplasm of animal cells called lysosomes. Lysosomes carry enzymes that were produced by the cell.
The major function of the lysosome is to digest macromolecules or substances that waste or defected. They might be utilized to digest food, cellular waste or break down the cell when it dies.
Thus, the correct answer is the lysosome.
which best describes a population?
Definition. noun, plural: (genetics, ecology) A group of organisms of one species that interbreed and live in the same place at the same time (e.g. deer population) (taxonomy) A low-level taxonomic rank. (statistics) A set of individuals, objects, or data from where a statistical sample can be drawn.
Answer:
A group of the same species living together
Explanation:
APEX
Which structures are found only in plant cells, not in
animal cells?
O A and B
B and C
C and D
D and A
-C
Answer:
B and C
Explanation:
B is chloroplast, which involved in photosynthesis to make glucose as food for plants cell.
C is cell wall, which provide structural support and protection
Answer:
B,C are the correct answer's not C,D or D,A nor -C
Explanation:animal and plant cells have similar properties they both have the following
nucleus
golgi body
cell membrane
lysosome
endoplasmic
cytoplasm
ribosomes
vacuole
these are the similar propertise that the animal and plant cells have in common.Although there are some other types of cell's that may have similar propertise and there are cells that may have some of the listed propertise and other propertise and there are cells with none of these propertise that are similar in how they work but with different propertise.
How does biodiversity affect ecosystem stability?
O
A. High biodiversity increases the chances that an ecosystem will be
able to survive a disturbance.
O
B. High biodiversity decreases the chances that an ecosystem will
encounter an extreme disturbance.
O
C. High biodiversity increases the chances that an ecosystem will
encounter an extreme disturbance.
O
D. High biodiversity decreases the chances that an ecosystem will be
able to survive a disturbance.
Answer:
I think its A
Explanation:
Having a high biodiversity can help an ecosystem to survive a disturbance it doesn't decrease the chances of one happening.
High biodiversity increases the chances of an ecosystem surviving a disturbance and contributes to ecosystem stability.
Explanation:Answer:
Biodiversity refers to the variety of living organisms in an ecosystem, including different species, genetic diversity, and ecological diversity. It plays a crucial role in maintaining the stability of ecosystems. High biodiversity increases the chances that an ecosystem will be able to survive a disturbance, such as a natural disaster or human activities. This is because different species have different roles and functions, and a diverse ecosystem is more resilient and adaptable to changes.
For example, in a forest ecosystem, a diverse community of plants, animals, and microorganisms interact and depend on each other. If there is a disturbance, such as a forest fire, a diverse ecosystem can recover more quickly because different species have different strategies for survival and can fill in the vacant ecological niches left by the disturbance.
In contrast, low biodiversity makes an ecosystem more vulnerable to disturbances. If an ecosystem has low diversity and one species is severely affected by a disturbance, such as a disease outbreak, the entire ecosystem can be destabilized. This can lead to a chain reaction, affecting other species that depend on the affected species, and ultimately leading to a collapse of the ecosystem.
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Which is an adaptation that helped plants survive on land
A) diploid forms
B) Photosynthesis
C)Development of backbones
D) production of seeds
Answer:
D
Explanation:
In water, an embryo can exist without desiccation hence remain viable until it is able to develop into another plant. On land, however, the embryo will be prone to desiccation and seeds are a plant’s adaption to survive life on land. The seeds have a pulp that provides the moist environment enclosing the embryo. In addition, seeds have a testa/seed coat that drastically lowers the rate of loss of water from the inside of the seed to the environment.
The production of seeds is the adaptation that allowed plants to exist on land. Therefore, the correct option is D.
The development of seeds enabled plants to reproduce and disperse their offspring without the need for water. The protection and nutrition provided by seeds to the growing embryo allows plants to settle and thrive in a wide variety of terrestrial habitats. This adaptation has helped plants to successfully colonize a variety of terrestrial ecosystems and has contributed significantly to the success and diversity of plant species on Earth.
Therefore, the correct option is D.
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A population that is growing exponentially in the absence of limiting factors can be illustrated by which shaped curve?
A population that is growing exponentially in the absence of limiting factors can be illustrated by a J-shaped curve.
A curve with J-shaped growth is produced when the population density suddenly increases in an exponential/logarithmic form.Subsequently, this curve (J-shaped curve) then stops unexpectedly due to seasonality or different factors.This type of curve is produced when individuals are situated in a new environment.In conclusion, a population that is growing exponentially in the absence of limiting factors can be illustrated by a J-shaped curve.
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other than the number of species, what factor has the greatest effect on species diversity in an area?
Answer:
Habitat loss or change.
Explanation:
If an ecosystem is destroyed, or altered, the organisms in that specific area may struggle to survive, or have to relocate to a suitable habitat. When this happens it may result in a butterfly effect where species die or migrate away. The Species diversity will then decrease in that ecosystem.
Loss of habitat or geographical isolation has the greatest effect on species diversity in an area.
How does loss of habitat affect the species diversity?Habitat loss or change has direct negative impact on species diversity.
Due to change in habitat the natural habitat loses its capability to sustain native life in terms of resources, nutrition and reproduction.
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The formation of fossil fuels in the carbon cycle serves to:
O
A. keep populations of plants under control.
O
B. store excess carbon underground.
O
c. build up the amount of carbon dioxide in the air.
DD. preserve organisms that are extinct.
Answer:
B. store excess carbon underground
Explanation:
The fossil fuels have been formed on the basis of organisms that have died, mostly producers. These organisms have carbon stored in them. As they died and got covered by sediments, the carbon has been stored in the lithosphere. Since more and more sediments have been covering the stored carbon, it has been isolated and stored into the lithosphere for tens or even hundreds of millions of years, thus contributing to lowering the amount of carbon in the atmosphere for quite some time, and removing it from its natural cycle.
a small polar molecule enters a cell with help from a membrane protein.
This is called facilitated diffusion(facilitated by membrane proteins) examples would be diffusion of ions such as sodium, potassium etc.
Hope this helps;)
Answer:
The small polar molecule enters a cell with help from a membrane protein by a process known facilitated diffusion.
Explanation:
The facilitated diffusion also known as passive diffusion. It allows movement of molecules along the concentration gradient whereas the process of active diffusion involves energy as it is against the concentration gradient.
The facilitated diffusion involves carrier protein and channel protein. Thus small molecules can easily pass through channel proteins.
Which process must occur for a muscle to be able to relax?
A. Myosin and actin must attach to each other.
B. The amount of ATP in the neuromuscular junction must increase.
C. The concentration of calcium in the myofibril must decrease.
D. A nerve must initiate an action potential in the muscle fiber.
Answer:
C. The concentration of calcium in the myofibril must decrease.
Explanation:
As soon as the stimulus which causes myofibril to contract stops, its time for muscle to relax.
A low calcium level in the sarcoplasm is the utmost requirement of muscle relaxation otherwise sliding of myosin will continue and muscle will keep on showing contraction. In order for muscle contraction, calcium ion i.e. Ca²⁺ must come out of the sarcoplasmic reticulum so for relaxation reverse process occurs i.e. Ca²⁺ is pushed back to the sarcoplasmic reticulum. There are many pumps known as "calcium pumps" which facilitate this process. Now, the concentration of Ca²⁺ becomes comparatively low in the sarcoplasm which causes troponin C to detach from Ca²⁺. Their detachment causes actin and myosin to detach from each other too which finally leads to muscle relaxation.
34. If only one type of tree is planted in an abandoned
field, the ecosystem will
When the solution concentration on the outside of the cell is greater than the solution concentrate on the inside of the cell what type of solution is the cell within
The solution would be hypertonic.
A hypertonic solution is one where the concentration of solutes is greater outside the cell than inside.
Answer:
Outside it is hypertonic, whereas inside it is hypotonic solution.
Explanation:
We can classify the solution into three types:
Hypertonic, hypotonic and isotonic.
If a cell is placed in a solution where the concentration of solutes is more outside than inside, then the cell is said to be hypotonic with respect to cell exterior.
If a cell is placed in a solution where the concentration of solutes is less outside than inside, then the cell is said to be hypertonic with respect to cell exterior.
If the solute concentration is same both inside and outside the cell then the cell is said to be isotonic with the exterior solution.
Water always moves from low solute concentration to higher solute concentration across the semipermeable membrane to bring it to equilibrium.