Which is a biotic factor that characterizes the desert biome?
A.cacti
B.conifers
C.low annual precipitation
D.high annual precipitation
Eukaryotic cells are much larger and have more specialized functions than prokaryotic cells because they contain___________, which take up space and carry out specialized activities.
Final answer:
Eukaryotic cells contain organelles that are essential for various specialized functions, unlike prokaryotic cells which lack these structures.
Explanation:
Eukaryotic cells are much larger and have more specialized functions than prokaryotic cells because they contain organelles, which take up space and carry out specialized activities. While prokaryotic cells lack these membrane-bound structures, eukaryotic cells boast an assortment of organelles such as the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus among others. Each of these organelles plays a critical role in the cell's life, with functions ranging from genetic material storage and energy production to protein synthesis and waste processing.
The development of pesticide resistance in crop pests is an example of?
Pesticide resistance in crop pests is an example of natural selection. Individuals with gene versions that confer pesticide resistance are more likely to survive and reproduce, leading to the increase of pesticide resistance in the pest population over time.
Explanation:Pesticide resistance in crop pests is an example of natural selection. When pesticides are repeatedly applied to a pest population, individuals with gene versions that confer pesticide resistance are more likely to survive and reproduce. As a result,
pesticide resistance becomes more common in the population over time. This phenomenon is observed in over 400 insects and mite pests and more than 70 fungal pathogens that have become resistant to one or more pesticides.
Drag each example to the correct location on the table. Identify whether the changes to biodiversity are natural or due to human intervention. A species of wasp is outcompeted by several other species and goes extinct. A species of wildflower goes extinct after land is cleared for agriculture. A population of grubs decreases as the population of moles, a predator of grubs, increases. Three populations of migratory fish decline after the construction of a hydroelectric dam. The number of offspring produced by a population of frogs decreases after pesticides enter their pond. A mass extinction occurs after several volcanic eruptions.
1. A species of wasp is outcompeted by several other species and goes extinct; Natural causes.
2. A species of wildflower goes extinct after land is cleared for agriculture; Human intervention.
3. A population of grubs decreases as the population of moles, a predator of the grubs, increases; Natural causes.
4. Three populations of migratory fish decline after the construction of a hydroelectric dam; Human intervention.
5. The number of offspring produced by a population of frogs decreases after pesticides enter their pond. Human intervention.
6. A mass extinction occurs after several volcanic eruptions; Natural causes.
The changes in biodiversity can be influenced both, by the humans and their activity, and the natural events that are taking place on our planet. Throughout the geologic history, lots of natural events. like asteroid collisions, super-volcano eruptions, changes in the composition of the atmosphere etc, have resulted in the dying out of millions of species, and even though this process of natural selection continues, it is not the dominant cause anymore. Nowadays, the biggest cause of loss and changes of biodiversity is the human activity. Lots of living organism have lost their habitats and food sources and went extinct because of the human activity, and also some species have died out or are on the verge of extinction because of the introduction of non-native species to certain places, and that has been devastating to the local wildlife.
Answer:
1. A species of wasp is outcompeted by several other species and goes extinct; Natural causes.
2. A species of wildflower goes extinct after land is cleared for agriculture; Human intervention.
3. A population of grubs decreases as the population of moles, a predator of the grubs, increases; Natural causes.
4. Three populations of migratory fish decline after the construction of a hydroelectric dam; Human intervention.
5. The number of offspring produced by a population of frogs decreases after pesticides enter their pond. Human intervention.
6. A mass extinction occurs after several volcanic eruptions; Natural causes.
Explanation:
A large stored sugar found in plant roots, fruits and seeds
Which compound does a plant absorb during photosynthesis
Answer: C. Carbon dioxide
Explanation:
The carbon dioxide is the compound that plants absorb from the atmosphere so as to produce carbohydrates as a source of food. This entire process is called as photosynthesis. In photosynthesis carbon dioxide, and water are the reactants which produce carbohydrates and oxygen in the presence of sunlight.
By what process are animal wastes and dead organisms converted to other nitrogen containing compounds ?
Answer:
Decomposing
Explanation:
When bacteria starts to break down the dead matter from organisms, this is called decomposing
Animal wastes and dead organisms are converted to other nitrogen-containing compounds through ammonification, nitrification, and denitrification, involving various microorganisms that complete the nitrogen cycle.
Animal wastes and dead organisms are converted to other nitrogen-containing compounds through a multi-step process involving different types of microorganisms. First, ammonification occurs, where bacteria and fungi convert organic nitrogen into ammonia (NH3). This ammonia then undergoes nitrification, carried out by bacteria such as Nitrosomonas, turning ammonia into nitrites (NO2) and then into nitrates (NO3). Finally, through the process of denitrification, bacteria like Pseudomonas and Clostridium convert nitrates back into gaseous nitrogen (N2), which re-enters the atmosphere, completing the nitrogen cycle.
Natural disasters can have positive effects on an ecosystem.
yes, for example, an earth quake while devastating can lead to the formation of a mountain or a valley. or a flood can change a landscape in such a way to make it more inhabitable for the local creatures. while natural disasters can help the ecosystem they can also be horrible for them as well.
Yes it can have positive effects.
Help please!!!
WHY do biofilms form? Please don't tell me HOW it forms. I just want to know WHY it forms.
The biofilm can present one of the most important species of microorganisms, depending on the duration and its location. Gram-positive, Gram-negative and yeast. In addition, the cellular elements may be attached to the biofilm, such as platelets, for example, when the biofilm is installed on the blood-soaked surface.Several factors contribute to the formation of biofilms. The biofilm can present one of the most important species of microorganisms, depending on the duration and its location. Gram-positive, Gram-negative and yeast. In addition, the cellular elements may be attached to the biofilm, such as platelets, for example, when the biofilm is installed on the blood-soaked surface.Several factors contribute to the formation of biofilms, depends primarily on the number and type of cells present in the liquid to which the surface is exposed and the rate of flow of this liquid across the surface. The physical chemical properties of the surface, the nutritional composition and ambient temperature will also interfere with this speed. The presence of antimicrobials in the medium may affect the formation of biofilms.
hope this helps!
Biology. Carbohydrates.
Answer:
Amylase
Explanation:
Why would damage to the nervous tissue in the spinal cord lead to paraysis
which of the following best describes the endosymbiont/ endosymbiotic theory?
A. the theory that states that Eukaryotic cells derived from a symbiotic relationship with prokaryotic cells.
B. The theory that states that prokaryotic cells derived from larger prokaryotic cells
C. The theory that states that eukaryotic cells derived from smaller eukaryotic cells
The best description of the endosymbiont/ endosymbiotic theory is the theory that states that Eukaryotic cells derived from a symbiotic relationship with prokaryotic cells. Thus, option A is correct.
What is endosymbiotic theory?
Endosymbiotic theory is also known as the symbiogenesis or serial endosymbiotic theory which has been leading the evolutionary theory of the cell which are eukaryotic and they from the prokaryotic organisms.
According to the endosymbiotic theory in the eukaryotic cell some of the cell organelles were once known as the prokaryotic microbes. The size of the mitochondria and chloroplast are of the same size.
Prokaryotic cell are known as the undeveloped and there are not as developed as the eukaryotic cell and they are not advance as the eukaryotic cell and they do not have developed cell organelles with them.
Therefore, The best description of the endosymbiont/ endosymbiotic theory is the theory that states that Eukaryotic cells derived from a symbiotic relationship with prokaryotic cells. Thus, option A is correct.
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Which systems have the most influence on behavior? Select all that apply.
endocrine
respiratory
circulatory
integumentary
nervous
Answer:
Endocrine system and Nervous system
Explanation:
Endocrine system and nervous system together work to regulate the behaviour of individuals. In general, sex hormones testosterone and estrogen are responsible for gender specific behavioral differences among males and females. The hormones of adrenal gland determine the behaviour of person under stress conditions. Adrenal gland secretes hormones epinephrine and norepinephrine. These hormones target the sympathetic and parasympathetic division of autonomous nervous system to regulate behaviour of person.
Answer:
endocrine and nervous
Explanation:
The ody ssey ware unit material specifically stated these two only and it was graded correct.
unit 3, assignment 1 under section PHYSIOLOGY. Page 7 of assignment printoff, this answer came from the speaker after the second graphic of the video. and is in the printed transcript of the video.
"Although all organ systems are involved in producing a behavior, the nervous and endocrine systems have the most influence"
And that's what the test wants.
is not a function of the skeletal system:? a. manufacture of red blood cells b. protection c. support d. synthesis of growth hormones
A scientist uses material in her lab to separate dna fragments by size what process is she using
She is using gel electrophoresis, where a DNA sample with DNA molecules of varying length are ran through an agarose gel to separate them into bands by size from longest at the top to shortest at the bottom.
Answer: Gel electrophoresis
Explanation:
Gel electrophoresis is a technique that is used to separate DNA fragments based on their size.In this technique, DNA samples are loaded into the wells at one end of a gel, and then an electric current is applied. DNA fragments being negatively charged move towards the positive electrode. Since, all DNA fragments have the same amount of charge per mass, small fragments move through the gel at a faster rate than large ones.In this way the fragments get separated by size.explain how triose phosphate is produced and used in the chloroplasts of a plant.
Triose phosphate is produced in chloroplasts through the Calvin cycle in photosynthesis. One molecule is exported for other compounds, and the rest are used to regenerate RuBP.
Explanation:Triose phosphate is produced in the chloroplasts of a plant through the Calvin cycle during photosynthesis. During the regeneration stage of the Calvin cycle, three molecules of triose phosphate are produced from six molecules of G3P (glyceraldehyde-3-phosphate). One molecule of triose phosphate is exported and used in the cytoplasm to form other compounds needed by the plant, while the remaining five molecules are used to regenerate RuBP (ribulose-1,5-bisphosphate), which allows the system to continue fixing carbon dioxide.
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ASAP 20 points!! Use the following image to complete the sentences below
The answers are Nucleus, Eukaryotic, Chloroplast, Plant cell.
The structure labeled as X is the Nucleus, so the cell in the image is a Eukaryotic. The structure labeled as W is the Chloroplast, so the cell in the image is a Plant Cell.
The answers are Nucleus, Eukaryotic, Chloroplast, Plant cell. This is correct I have taken the test.
which of the following may be associated with the collision of two sections of continental crust?
A.hot-spot volcanoes
B.earthquakes and a mountain rages
C.earthquakes, volcanoes, and trenches
D.trenches and earthquakes
earthquakes and a mountain range
The bacteria in a colony are unable to perform conjugation. How would this hurt the bacterial colony's chance for survival?
The bacteria would be more alike, genetically.
Copper is a metal that is used for many purposes. It is mined from the earth using various methods. Though the amount of copper in the Earth's crust is very large, if the mining of copper continues, it will eventually run out.
Jim thinks that conserving copper is important, and says that the best way to do this would be to stop all copper mining at once. Is there a problem with this solution?
A) No, it is as good a solution as any.
B) Yes, there is no need to conserve copper.
C) No, we must conserve copper no matter what.
D) Yes, the need to conserve copper must be balanced with use.
D) Yes, the need to conserve copper must be balanced with use.
Answer:
The answer is D) Yes, the need to conserve copper must be balanced with use.
Explanation:
Which of the following can be used by scientists to date the sediment layer they are found in? Select all that apply.
Which most closely defines habitat?
A. a role that an organism has within its community
B. a unique environment in which an organism lives
C. how the population makes its living within its community
D. how the population meets its needs within an ecosystem
How can stress be beneficial?
Increasing energy
Decreasing heart rate
Increasing digestion
Increasing immune response
Stress is beneficial because it causes ; ( A ) Increasing energy
Stress is beneficial to the human body in varying ways because stress causes the body to releases certain hormones in response to situations possessing threats to the body.
These hormones leads to increase in heart rate and breathing speed. and this feeds our muscles with the required energy needed to respond to the situation.
Hence we can conclude that stress is beneficial because it causes increasing energy in the human body.
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Which of these is a constructive geologic process? A. erosion B. deposition C. weathering D. transportation
Answer:
B. deposition
Explanation:
Answer:
B HAVE A GOOD DAY
Explanation:
what is codon. what does it do
A codon is basically a "word" in the genetic code.
Let's start at the base. A base is the smallest unit of information in genetics. It is a chemical represented by either A, T , C, G or U.
These genetic "letters" are combined into "words" which are called codons. What is useful is that each codon is only made of 3 bases. You'll have CCT, GAT, TTA etc. So what do these words represent? Well they can be instructions, like START or STOP, but usually they represent an amino acid, the LEGO building blocks of proteins. There are around 20 AAs but a bit of maths tells us we have a lot more codon combinations than AAs. This means we have some synonyms where several codons can represent one AA.
To take the analogy further, the codons combine into "sentences" and then "chapters". The chapters are a gene, usually instructions for a complete protein, but some of the sentences are useless and will be ignored when translating into a protein.
Then we have the "Book" which is the chromosome. The reason I like to think of it as a book is that at this point it is a contained unit, a massive molecule. You can separate up your books and even lend one to a friend, but you can't do that with a chapter unless you destroy the book.
Finally you have you "library" or genome. It's not a big collection, 46 books in total, and in fact you have 2 copies of each. It's like inheriting 2 sets of encyclopaedias from your parents. They both have the same information, it is just explained in different ways.
And there is my book analogy of genetics. It's not perfect but works when used on small children.
Which is *not* a kingdom in the Eukarya domain?
A. Archaea
B.Fungi
C.protista
D.plantae
Answer:
The correct answer is option A, Archaea
Explanation:
The Eukarya domain has four kingdoms primarily - Protista, Fungi, Plantae, and Animalia.
Archaea belongs to the Archaeabacteria kingdom which constitutes of unicellular prokaryotic organsims. In the system of classification , Archaea itself constitutes a domain which is further divided into two subdivisions
a) Crenarchaeota and
b) Euryarchaeota
They are unicellular but their characteristics are very different from the bacteria, thus they constitutes an individual set of organisms.
Following is not a kingdom in the Eukarya domain:
A.) Archaea
What is Eukarya?Eukarya consists of plants, animals, and fungi, as well as protists. Cells have an internal architecture based on the membranes and DNA is inside a nucleus.
Archaea are single-celled microorganisms with structure similar to that of bacteria. These microorganisms do not have cell nuclei and therefore belong to prokaryotes. Archaea are anaerobes that is they live in low oxygen environments.
The domain of Eukarya consists of organisms that have a nucleus. Four kingdoms are : Protista,” Fungi, Plantae, and Animalia. Under the harsh environmental conditions, Archaea contribute to the functioning of the ecosystem by performing functions like nutrient cycling, stress response, and phytohormone biosynthesis.
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are organisms that contain more than one cell with membrane-bound organelles and a nucleus.
eukaryotes are organisms that contain more than one cell with membrane-bound organelles and a nucleus.
Eukaryotes are organisms with cells that contain a membrane-bound nucleus and organelles. They can be unicellular or multicellular and are distinct from prokaryotes, which lack a nucleus and membrane-bound organelles. Eukaryotic cells are typically larger and more complex than prokaryotic cells.
Organisms that contain more than one cell with membrane-bound organelles and a nucleus are known as eukaryotes. These organisms can be made up of a single cell or can be multicellular. They are characterized by having a nucleus that contains the organism's genetic material and is surrounded by a complex nuclear membrane. Additionally, eukaryotic cells contain several other membrane-bound organelles, such as mitochondria, endoplasmic reticulum, and Golgi apparatus, which perform specific functions necessary for the cell's survival and operation.
Eukaryotic organisms include a vast array of life forms including protozoa, fungi, plants, and animals. A significant difference between eukaryotes and prokaryotic cells, such as bacteria, is the presence of a nucleus and other membrane-bound organelles in eukaryotes, which are not found in prokaryotes. Eukaryotic cells are typically larger than prokaryotic cells and are the building blocks of complex organisms.
suppose you were getting ready for a soccer game and wantedto have a snack that would give you energy for the entire game which snack should you eat a container of yogurt with some cheese ot hard candy with soda pop
Answer:
The better choice is the yogurt and cheese. Fats like yogurt and cheese have more energy stored in them than sugars do and this energy can sustain you longer.
Explanation:
sample response on edgenuity
Which in the steps in this sequence of events is an example of mitosis at work
Answer:
The bruise slowly disappears as the arm heals
Explanation:
took edge test
Which fator can decrease the rate for chemical reactions . A. Low activation energy ,B.hight pressure ,C.low temperature.D.high concentration of reactants
Low temperature will slow the chemical reaction.
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei and can often be described by a chemical equation.
C- Low temperature
When you lower the temperature, the molecules are slower and collide less. That temperature drop lowers the rate of the reaction.