Answers
Endoplasmic reticulum - makes fats and proteins; one has ribosomes and one does not.
What is Cell Organelles?
Cell organelles are specialized cellular structures found within the cytoplasm of all eukaryotic cells. These organelles are responsible for a wide variety of functions, including energy production, metabolism, and communication. The most common organelles include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, peroxisomes, and vacuoles. The nucleus is the most important organelle and contains genetic information, while the mitochondria produce energy. The endoplasmic reticulum is responsible for transporting proteins and lipids throughout the cell, while the Golgi apparatus helps to package and transport these molecules. Lysosomes contain digestive enzymes, peroxisomes are involved in oxidizing metabolic reactions, and vacuoles store important materials. Together, these organelles allow for efficient and organized functioning within the cell.
Mitochondria - Creates energy
Endoplasmic reticulum - makes fats and proteins; one has ribosomes and one does not.
Ribosomes - helps assembles proteins
Golgi apparatus - ships and packages protein
Chloroplast - absorbs sunlight
Vacuoles - store food, water and wastes
Lysosomes - helps breakdown nutrients and dead cell parts.
Cytoplasm - thick fluids in cell.
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Related Questions
dye-free spectrophotometric measurement of nucleic acid-to-protein ratio for cell-selective extracellular vesicle discrimination
Answers
The dye-free spectrophotometric measurement of nucleic acid-to-protein ratio is used for cell-selective extracellular vesicle discrimination.
Extracellular vesicles (EVs) are small membrane-bound structures released by cells that play crucial roles in intercellular communication. Discriminating between different types of EVs can provide valuable insights into cellular processes and disease states. One approach to distinguishing between different EVs is by measuring the nucleic acid-to-protein ratio.
The nucleic acid-to-protein ratio refers to the relative amount of nucleic acids (such as DNA or RNA) to proteins present in the EVs. This ratio can vary depending on the cell type and physiological condition. To measure this ratio, a dye-free spectrophotometric method is used, which avoids the use of specific dyes that may interfere with the measurement.
Using spectrophotometry, the absorbance of nucleic acids and proteins in the EV sample is measured at specific wavelengths. By comparing the absorbance values, the nucleic acid-to-protein ratio can be determined. This ratio provides information about the composition of the EVs and can be used to discriminate between EVs derived from different cell types.
Overall, the dye-free spectrophotometric measurement of nucleic acid-to-protein ratio offers a reliable and quantitative approach for cell-selective extracellular vesicle discrimination. It enables researchers to study the molecular composition of EVs and gain insights into their functions in various biological processes and disease conditions.
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such fossil evidence supports which statement put forth by alfred wegener regarding the geologic history of earth
Answers
Answer:
Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.
Explanation:
Answer: C) The continents were once United into a single supercontinent named Pangea, which broke apart and the continents gradually moved their current positions. (USATestprep)
Explanation:
The “Explanation” is all in the answer, really. :)))
ry to describe and explain the different physiological components responsible for the male erection response during the time when Pudendal arterial blood flow is essentially zero and the intracorporeal blood pressure is much greater than mean arterial pressure. Make sure you try to explain how the intracorporeal blood pressure is much greater than mean arterial pressure.
Answers
Multiple physiological processes come together during the male erection response to help create and sustain an erection. Although there is normally less blood flow through the pudendal arteries at this time, other processes provide sufficient blood flow and elevated intracorporeal blood pressure.
The male erectionThe male erection response involves the interaction of various physiological factors. Although there is a reduction in pudendal artery blood flow, other systems make sure there is still enough blood supply and that the intracorporeal blood pressure is raised.
Neurological stimulation, parasympathetic activation, nitric oxide release, arterial vasodilation, trabecular smooth muscle relaxation, venous compression, and raised intracorporeal blood pressure are some of these effects. Due to arterial vasodilation, increased blood flow, and venous compression, the intracorporeal blood pressure may be greater than the mean arterial pressure. Overall, despite decreased pudendal artery blood flow, these systems help to maintain and promote the erection response.
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Endangered Species
Research an endangered species. Include an image of this species. Discuss the following questions: Approximately how many are left? When is the estimated time they will be extinct? What is the major cause of their future demise?
Vulnerable Species Research a vulnerable (threatened) species. Include an image of this species. How many are there left or have reappeared? What is being done to help them come back? What was the cause of their decline or demise?
Answers
a. Endangered Species: African Elephant: The African elephant is a majestic species that is facing extinction due to various factors. Approximately 415,000 African elephants remain in the wild, with their population declining by 60% over the last 75 years.
b. According to the International Union for Conservation of Nature (IUCN), the African elephant is classified as vulnerable, and it is estimated that if current trends continue, they could be extinct within the next few decades.
The major cause of their future demise is the illegal wildlife trade, particularly the demand for ivory. Poaching for ivory has led to the killing of tens of thousands of elephants each year, resulting in severe population declines in many African countries. In addition to poaching, habitat loss and fragmentation, human-wildlife conflict, and climate change also pose significant threats to African elephants.
To help African elephants, several conservation efforts are underway. These include anti-poaching measures, habitat restoration, and community-based conservation programs. In addition, many countries have banned the trade in ivory, although enforcement of these laws can be challenging.
Vulnerable Species: Snow Leopard: The snow leopard is a vulnerable species that is found in the high-altitude mountain ranges of Central and South Asia. Approximately 4,000 to 6,500 snow leopards remain in the wild, with their population declining by 20% over the last three decades. According to the IUCN, the snow leopard is classified as vulnerable due to habitat loss and fragmentation, poaching, and retaliatory killings by herders.
The major cause of their decline is habitat loss and fragmentation due to human activities such as mining, agriculture, and infrastructure development. In addition, poaching for their pelts and body parts is also a significant threat to snow leopards. Retaliatory killings by herders who lose their livestock to snow leopards are also a major cause of their decline.
To help snow leopards, several conservation efforts are underway. These include habitat restoration, anti-poaching measures, and community-based conservation programs. In addition, the Snow Leopard Trust and other organizations are working to educate local communities about the importance of snow leopards and to promote sustainable development practices that minimize negative impacts on snow leopard habitat.
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check all the characteristics below that describe elements
Answers
Answer:
The Answer your looking for is A and B
A-one type of atom
B- a pure substance
Explanation:
What is the relationship between the Gulf Stream and the global conveyor belt?
Answers
Answer:
The ocean conveyor gets its “start” in the Norwegian Sea, where warm water from the Gulf Stream heats the atmosphere in the cold northern latitudes. This loss of heat to the atmosphere makes the water cooler and denser, causing it to sink to the bottom of the ocean.
Explanation:
Explain how Direct Harvesting has contributed towards the loss of
biodiversity.
Answers
What best describes the association between the carbon cycle, plants, and animals?
Plants fix carbon and release oxygen, and animals release carbon and use oxygen.
Animals fix carbon and release oxygen, and plants release carbon and use oxygen.
Animals fix carbon through respiration, and plants fix carbon through photosynthesis.
Plants decompose fixing carbon, and animals decompose releasing carbon.
Answers
The best statement that describes the association between the carbon cycle, plants, and animals is plants fix carbon and release oxygen, and animals release carbon and use oxygen.
WHAT IS THE CARBON CYCLE?The carbon cycle is a series of processes that leads to the release and usage of carbon between biotic and abiotic factors of the ecosystem.
Plants make use of carbon in form of carbon dioxide by undergoing photosynthesis while animals make use of the oxygen released for respiration.
Therefore, the best statement that describes the association between the carbon cycle, plants, and animals is plants fix carbon and release oxygen, and animals release carbon and use oxygen.
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Please help me with this! The question on the image
Answers
2.
No movement of water would have
occurred if they were isotonic.
3.
A. Side 2B. Side 1Which of the following best describes the structural relationship between genes, chromosomes, and DNA?
A Genes consists of two long strands of chromosomes, and each of these two strands consists of molecules called DNA.
B Each DNA molecule consists of a number of pairs of genes, and each pair of genes on the DNA molecule is made up of chromosomes.
C Each chromosome consists of a number of DNA molecules, and each DNA molecule is made up of one to four different genes.
D Each chromosome consists of a single long DNA molecule, and each gene on the chromosome is a particular segment of that DNA.
NEED ASAP
Answers
Answer:The correct answer is D. Each chromosome consists of a single long DNA molecule, and each gene on the chromosome is a particular segment of that DNA.
This is the structural relationship between genes, chromosomes, and DNA. The DNA molecule is the genetic material that carries the instructions for the development and function of all living organisms. It is made up of two complementary strands of nucleotides, which are the building blocks of DNA. Each chromosome contains one long DNA molecule, which is tightly coiled and packaged with histone proteins to form a structure called chromatin. Genes, which are the functional units of DNA, are located at specific positions along the chromosome and are composed of specific segments of the DNA molecule. The genes contain the instructions for making proteins, which are the building blocks of the body and play a crucial role in the development and function of all living organisms.
This answer is supported by the fact that chromosomes are the structures in cells that carry the genetic information in the form of genes, and that genes are made up of DNA which is a long molecule containing the genetic code.
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Question 3 (2 points) According to Newton's 2nd Law, Force equals mass times acceleration. Sidney Crosby has a mass of 91kg and Claude Giroux has a mass of 85kg. If they both are accelerating at 20m/s2, which person will have the greater force when they collide? A.Sidney Crosby
B.Claude Giroux
C.They both will have the same force
D.Not enough information is given.
Answers
Answer:Sidney Crosby
Explanation:
During mitosis, the X shaped figures that can be seen in prophase, anaphase and metaphase are called_______.
Answers
Answer:
chromosomes probably....... because X shaped ( are usually condensed form of chromatin) which divide .
ANSWER FAST AND THIS IS NOT A HIGHSCHOOL THING IT IS MIDDLE SCHOOL <3
Which example is ONE specific form of simple diffusion?
A: If water moves into a cell by osmosis, it is moving into an area of higher solute concentration.
B: If water moves into a cell by diffusion, it is moving from an area of higher concentration to an area of lower concentration.
C: If water moves into a cell by osmosis, it is moving into an area of higher water concentration.
D: If water moves into a cell by diffusion, it is moving into an area of higher solute concentration.
Answers
Answer:
c
Explanation:
the function of sunlight in photosynthesis is to responses excite electrons in chlorophyll. excite electrons in chlorophyll. combine carbon dioxide and water to form atp and nadph. combine carbon dioxide and water to form atp and nadph. fix o2 in the calvin cycle. fix o2 in the calvin cycle. reduce nadph to nadp. reduce nadph to nadp.
Answers
The function of sunlight in photosynthesis is to excite electrons in chlorophyll. excite electrons in chlorophyll, and its product is combine carbon dioxide and water to form atp and nadph, so options first is the correct option here.
Sunlight, specifically the energy carried by photons, when it is absorbed by pigments, such as chlorophyll, and other pigments in the chloroplasts of plant cells, the electrons are emitted. This absorption of light energy leads to the excitation of electrons in chlorophyll molecules, as a result of which the photosynthesis takes place. These excited electrons then enter a series of energy transfer reactions, ultimately driving the process of photosynthesis resulting the synthesis of NADPH and ATP.
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The decision to initiate a voluntary response was once thought to bemade entirely in theA) posterior parietal cortex.B) dorsolateral prefrontal cortex
Answers
The decision to initiate a voluntary response involves a complex interplay between multiple brain regions.
Recent research has suggested that the decision to initiate a voluntary response is not solely made in one specific region of the brain, but rather involves a network of brain regions, including the posterior parietal cortex and dorsolateral prefrontal cortex. These regions work together to integrate sensory information, generate an appropriate motor response, and monitor and adjust the response as needed. The dorsolateral prefrontal cortex is thought to be particularly important for the planning and execution of voluntary responses, while the posterior parietal cortex plays a key role in spatial awareness and attention. Overall, the decision to initiate a voluntary response involves a complex interplay between multiple brain regions.
it was once believed to be made entirely in the dorsolateral prefrontal cortex (B). The dorsolateral prefrontal cortex plays a critical role in decision-making, working memory, and cognitive control. However, recent research has shown that voluntary responses involve a more complex interaction between various regions of the brain, including the posterior parietal cortex (A), which is responsible for integrating sensory information and guiding attention. In summary, initiating a voluntary response is a complex process involving multiple brain regions, rather than being solely determined by the dorsolateral prefrontal cortex.
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i want to paraphrase this part
Likewise, dengue transmission is on rise due to unusual global warming, as various vectors like mosquitoes, previously rare
in this part of the world, are breeding faster. Consequently, the geographical distribution of vector-borne infectious diseases is likely to proliferate with an incremental increase in the duration and intensity of heat and humidity globally. Humanity is now standing at a crossroads. We must now decide which path we want to take. How do we want the future living conditions for all living species to be like?" remarked Greta Thunberg.
Answers
Greta Thunberg's remark serves as a reminder that humanity must make a crucial choice regarding the future living conditions for all species. The escalating transmission of diseases like dengue due to global warming demands immediate action. We have the power to shape a sustainable future and prioritize the well-being of all living beings. It is our responsibility to act decisively, mitigating the effects of climate change and safeguarding the planet for generations to come. Together, we can create a path that fosters a harmonious coexistence for all species.
Similarly, the incidence of dengue transmission has been escalating due to the alarming effects of global warming. Unusual changes in temperature have led to the proliferation of various disease-carrying vectors, such as mosquitoes, that were previously uncommon in this region. This, in turn, has raised concerns about the geographic spread of vector-borne infectious diseases, which are expected to expand as global heat and humidity levels rise.
At this critical juncture, humanity faces a pivotal choice. Greta Thunberg, a prominent environmental activist, highlights the urgency of the situation and calls upon us to consider the consequences of our actions. The future living conditions for all species hang in the balance, and our decisions today will profoundly impact life on Earth. We have the power to shape a future that prioritizes sustainability and the well-being of all living beings, or one that perpetuates the harm caused by climate change. It is our responsibility to act decisively, implementing measures to mitigate global warming and safeguard the planet for generations to come. Together, we can forge a path towards a sustainable and harmonious coexistence for all living species.
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Your brain uses the _____ to process and manage stress responses.
Answers
Answer:fruntalope
Explanation:
snake,grass hopper,grab,spider from the above organisms formulate a dichotomous key
Answers
Does it have legs? (Yes/No)
Yes: Go to 2
No: Go to 3
Does it have more than 4 legs? (Yes/No)
Yes: Grasshopper
No: Snake
Does it have eight legs? (Yes/No)
Yes: Spider
No: Grab
To formulate a dichotomous key using the given organisms (snake, grasshopper, crab, spider), we can follow this structure:
Does the organism have legs?
Yes: Go to question 2.
No: It's a snake.
Does the organism have more than four legs?
Yes: Go to question 3.
No: It's a grasshopper.
Does the organism have a hard exoskeleton?
Yes: It's a crab.
No: It's a spider.
This dichotomous key helps differentiate between the organisms based on their characteristics. By answering the questions sequentially, one can identify the correct organism.
It starts by determining if the organism has legs or not, leading to the snake if it lacks legs. If the organism has legs, the key proceeds to assess the number of legs, identifying the grasshopper if it has four or fewer legs.
Finally, the presence or absence of a hard exoskeleton distinguishes between the crab and spider, with a hard exoskeleton indicating a crab and its absence indicating a spider.
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explain the phenomenon known as epithelial to mesenchymal transition (involving a special gene expression program)
Answers
Epithelial to mesenchymal transition (EMT) is a process in which cells of epithelial origin lose their cell-cell contacts and cellular polarity, and gain migratory and invasive properties, allowing them to migrate into other tissues.
It is important in embryonic development, wound healing and tissue regeneration, and is a key step in the metastasis of cancer.
EMT involves a special gene expression program, which includes upregulation of mesenchymal markers and downregulation of epithelial markers.
The transcription factors responsible for initiating the gene expression program include SNAIL, ZEB, TWIST, and FOXC2.
These transcription factors repress epithelial-specific genes, while inducing mesenchymal-specific genes. The key molecules responsible for implementing this gene expression program include TGF-β, WNT, and HGF.
This program leads to remodeling of the cell cytoskeleton and loss of cell-cell adhesion, resulting in increased cell motility, survival, and invasiveness. It also allows for cell plasticity and reprogramming, which plays an important role in tumor metastasis.
EMT is an important part of embryogenesis, wound healing, and tissue regeneration, as well as a critical process in tumor metastasis.
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I Need help ASA!!!!
Answers
Answer:
I believe it is C. Plate tectonics
Explanation:
A student observed a dying plant in the corner of their science classroom. They learned the process of Photosynthesis and Cellular Respiration already in class. The students were trying to remember the correct chemical equation for the process. In order for the plant to be successfully creating its own food which chemical equation did the student write correctly?
Answers
Answer:
The general chemical equation for photosynthesis is
6CO2 +6 H20 → C6H1206 + 602,
Where CO2 is carbon dioxide, H20 is water, C6H12O6 is glucose, and O2 as oxygen a byproduct.
the process begins with the splitting of water molecules-Photolysis.
2H20 +2 NADP + 8 Photons → NADPH + 2H+2 O. Photons is sunlight that splits the water molecules.
Cellular respiration is the reverse of the process which is the
C6H1206 +6 O2 → 6H20 +6 CO2 +ATPs.
ATPs is the chief product, while C02 is the byproduct.
Explanation:
what part of the digestive system is label 3?
Answers
Answer:
Stomach
Explanation:
Complete the missing blanks in the fig
3
Complete the following flow chart based on ecosystem and its components.
(iv)?
Comprises
TERRESTRIAL
BIOTIC
Types
Components
ECOSYSTEM
2
Definition
Comprises
2
Answers
Answer:
lol
Explanation:
im poor
Which data can be measured quantitatively?
speed of light
odor of gas
texture of a solid
color of a flame
Answers
Answer:
speed of light
Explanation:
i took the test
Data can be measured quantitatively is (a) speed of light. Option a
Which data can be measured quantitatively?The speed of light can be measured using different scientific methods, like experiments with electromagnetic waves. The speed of light is usually described using units like meters per second or kilometers per second.
In comparison, smell, feeling, and appearance are properties that cannot be measured with numbers. These characteristics are based on personal opinions and are usually explained with words instead of numbers. For instance, the smell of gas can be described as strong or pleasant, but it cannot be given a number or measured accurately.
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Rewrite this sentence to make it true:
Physical changes happen when the molecules and atoms in matter change.
Answers
Answer:
Chemical changes happen when the molecules and atoms in matter change
Explanation:
Chemical changes occur when molecules or atoms' bonds are broken or formed
You have carried out a genetic screen and isolated two pure-breeding lines of zebrafish with abnormal tail fin shapes. Both of the abnormal phenotypes are inherited in a recessive fashion. What is the easiest way to tell whether these two lines have mutations in the same gene or in two different genes?.
Answers
A complementation test is the simplest approach to determine if the mutation that causes aberrant phenotypes and is inherited recessively is in the same gene or in two distinct genes.
A mutation is a change in the regular sequence of genes. It could take the shape of deletion, addition, duplication, reversion, and so on. In general, mutations have negative consequences, although certain mutations have no effect at all. Silent mutations are such mutations.
The complementation test is performed to evaluate if the mutations are caused by the same version of a gene or by two separate genes. In this experiment, two mutants are crossed and their F1 progeny are observed. If the wild type attribute arises, the mutation could occur in two separate genes.
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What is the scientific definition of limited resource
Answers
Answer:
A basic condition of nature which means that the quantities of available labor, capital, land and entrepreneurship used for the production of goods and services are finite
Explanation:
hope this helped you (ㆁωㆁ)
why are cells important to one’s understanding of biology
Answers
Answer: They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves
Read this excerpt from the text "Terrible Twisters."
When it comes to tornadoes, no amount of optimism is going to help. It is important to understand how tornadoes form and the destruction they can cause to understand why people
need to take precautions when there are tornadoes. People have to be prepared. It's extremely important to take precautions during tornado watches and warnings to save lives!
Select the author's perspective on why it's important to take precautions
O Being prepared can save peoples' lives
O Destruction is inevitable in a tomado
O optimism is not enough to save lives.
O Tornados are very fast moving storms
Answers
The author's perspective on why it's important to take precautions during tornadoes is expressed in the statement: A. "Being prepared can save peoples' lives." This perspective emphasizes the importance of proactive measures and preparedness to minimize the potential harm caused by tornadoes.
The author acknowledges that tornadoes can be highly destructive, as indicated by the mention of understanding their formation and the destruction they can cause. However, instead of viewing destruction as inevitable, the author shifts the focus to the importance of taking precautions and being prepared.
The statement also suggests that mere optimism is not sufficient to ensure safety during tornadoes. It implies that a positive outlook alone cannot protect individuals from the potential dangers associated with these fast-moving storms. The author emphasizes the need for practical actions and precautionary measures during tornado watches and warnings.
By emphasizing the importance of preparedness and taking precautions, the author conveys a sense of responsibility and urgency in dealing with tornadoes. The focus is on saving lives and mitigating the impact of these severe weather events through proactive measures. Therefore, Option A is correct.
The question was incomplete. find the full content below:
Read this excerpt from the text "Terrible Twisters."
When it comes to tornadoes, no amount of optimism is going to help. It is important to understand how tornadoes form and the destruction they can cause to understand why people
need to take precautions when there are tornadoes. People have to be prepared. It's extremely important to take precautions during tornado watches and warnings to save lives!
Select the author's perspective on why it's important to take precautions
A Being prepared can save peoples' lives
B Destruction is inevitable in a tomado
C optimism is not enough to save lives.
D Tornados are very fast moving storms
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a cyclops that is homozygous dominant for the barbed gene and is resistant to pesticides is crossed with one that is resistant but not barbed. What proportion of the off spring will be barbed and resistant.
Answers
All of the offspring (100%) will be barbed and pesticide-resistant. Most often, bacterial defense mechanisms play a role in the development of pesticide resistance.
An experiment in genetics known as a "dihybrid cross" tracks the phenotypes of two genes by mating individuals who have multiple alleles at those gene loci. In most sexually reproducing organisms, each gene is present in two copies, allowing for the presence of two distinct alleles.
Monohybrid crosses are crosses in which there is just one pair of opposing characters. Dihybrid crosses are crosses in which there are only two pairs of opposing characteristics. For figuring out which genes are dominant, employ a monohybrid cross.
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100% of the progeny will be barbed and resistant to pesticides. Most frequently, the development of pesticide resistance is influenced by bacterial defence mechanisms.
A genetic experiment called a "dihybrid cross" studies the effects of two genes by mating individuals with different alleles at the same gene locus. Each gene is often found in two copies in sexually reproducing organisms, allowing for the existence of two different alleles.
Monohybrid crosses are crosses with only one set of antagonistic traits. Crosses with just two opposing pairings of traits are known as dihybrid crosses. Use a monohybrid cross to identify the dominant genes in a population.
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