Which is true about eukaryotes? Choose one
Their cells have membrane-bound organelles.
Their cells have plasmids.
Their cells do not have any DNA.
Their cells are generally smaller than those of prokaryotes.
Answers
Answer:
Their cells have membrane-bound organelles.
Explanation:
Eukaryotes have membrane-bound organelles that allow them to compartmentalize or organize cellular functions. Some of these organelles include the nucleus, the mitochondria, the golgi apparatus etc.
Related Questions
1. reflection: reflect on at least 2 key concepts you have learned from this simulation. how would you relate it to the physiological functions of the body?
Answers
Homeostasis: This simulation taught me a valuable lesson on the importance of homeostasis in maintaining the physiological functions of the body.
The ability of the body to control internal parameters such as temperature, pH and glucose levels within a specific range is called homeostasis.
Another important idea I raised is the function of feedback loops in preserving homeostasis. The body uses feedback loops to recognize changes in its internal environment and launch actions to re-establish balance. I saw both positive and negative feedback loops activated in the simulation. The negative feedback loop serves to reduce outliers and re-establish equilibrium.
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On a sunny day, Emma is cutting branches from a tree in her yard. At midday, she takes a break, leaving a pile of branches and leaves on the ground. When she returns and gathers the branches, she notices the leaves are wilted and crisp.
Answers
Answer:
The warm temperature caused moisture to evaporate from the leaves
Explanation:
Match the reactants and products with the correct HALF of PSN.
Answers
Answer:
B
Explanation:
what is the symbiotic relationship between brain coral and algae
Answers
The symbiotic relationship between brain coral and algae is a mutually beneficial partnership in which the coral provides a protected environment for the algae to thrive, while the algae provide the coral with essential nutrients through photosynthesis.
Brain coral, a type of stony coral, has a unique structure with deep grooves and ridges that resemble the folds of a human brain. Within the tissues of the coral, tiny algae called zooxanthellae take up residence. These algae are photosynthetic, meaning they can convert sunlight into energy through photosynthesis. In exchange for a safe haven, the algae provide the coral with oxygen and organic compounds, such as glucose, glycerol, and amino acids, which are the byproducts of photosynthesis.
The nutrients produced by the algae are vital for the coral's growth and metabolism. They serve as an energy source and help in the production of calcium carbonate, which forms the hard skeleton of the coral. The algae also aid in the removal of waste products from the coral's tissues. In return, the coral provides a stable environment, protection from predators, and access to sunlight for the algae to carry out photosynthesis.
This interdependent relationship between brain coral and algae highlights the intricate balance and cooperation found in many coral reef ecosystems. Understanding the dynamics of such symbiotic interactions can provide valuable insights into the conservation and management of these fragile ecosystems.
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what does the combination of global convection and the coriolis effect make
Answers
Answer:
The combination of worldwide convection and earth's turn sets up a arrangement of wind designs. Coriolis impact The bowing of streams of discuss or water due to earths rotation
Explanation:
Have A Wonderful Day !!
Answer:
The combination of global convection and Earth's rotation causes wind patterns called convection cells in each hemisphere.
Explanation:
Hope this will help
Phagocytosisthe ribosomal rna studies that led to the division of prokaryotic organisms into the bacteria and the archaea were begun by?
Answers
The ribosomal RNA studies that led to the division of prokaryotic organisms into the bacteria and the archaea were begun by Woese.
Ribosomal RNA makes the maximum portion of RNA in the cells. However, it is not translated into proteins. But it plays a major role in the translation of m-RNA. They are responsible for deducing the order of the amino acid sequence and linking the amino acids together to form the polypeptide.
Archaea are a group of organisms that are similar to bacteria, yet have evolutionary differences. They are found in extreme locations like hot spring, salty water bodies, or areas where methane if formed. Therefore, they are also known as extremophiles.
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There are n bacteria and one virus in a Petri dish. Within the first minute, the virus kills one bacterium and produces another copy of itself, and all of the remaining bacteria reproduce, making 2 viruses and 2(n−1) bacteria. In the second minute, each of the viruses kills a bacterium and produces a new copy of itself, resulting in 4 viruses and 2(2(n−1)−2))=4n−8 bacteria. Again, the remaining bacteria reproduce. This process continues every minute. Will the viruses eventually kill all the bacteria? If so, give an algorithm that computes how many steps it will take. How does the running time of your algorithm depend on n ?
Answers
The viruses will eventually kill all the bacteria. The running time of the algorithm is approximately O(log n).
Yes, the viruses will eventually kill all the bacteria. The number of bacteria decreases with each step, while the number of viruses doubles. The algorithm for determining the number of steps increments the step until the number of remaining bacteria becomes zero.
The running time of the algorithm is approximately logarithmic in nature, as the number of steps required to eliminate all bacteria grows logarithmically with the initial number of bacteria, n. This means that as the number of bacteria increases, the running time of the algorithm increases at a slower rate, making it an efficient approach for large values of n.
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what is true of a process that decreases the dispersal of matter? select the correct answer below: the process will be spontaneous. the process will be nonspontaneous. the process will be exothermic. there is not enough information to tell.
Answers
There is insufficient information to determine the existence of a procedure that reduces matte dispersion.
Option D is correct.
What in biology is dispersal?The movement of one or more individuals away from the population in which they were born to another location or population where they will settle and reproduce is an ecological process known as dispersal. The two types of dispersal that occur most frequently are: birth or dispersion
What is an illustration of dispersion?Dispersal can take one of two forms: passive and active When organisms move from one location to another without assistance, such as bats, birds, and butterflies, this process is known as active dispersal. Seeds, dandelions, and burrs are examples of organisms that require assistance moving from one location to another through passive dispersal.
Incomplete question :
what is true of a process that decreases the dispersal of matter? select the correct answer below:
A.the process will be spontaneous.
B.the process will be nonspontaneous.
C.the process will be exothermic.
D.there is not enough information to tell.
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NEED BIO HELP ASAP 30 POINTS !!!!!!!!!!!!!!!!!!!!!!
Answers
1. Cell starts into mitosis phase of the cell cycle.
2. Helicase begins to break the hydrogen bonds between the nitrogen bases. (The double helix has to be unwound in order to expose the nucleotides)
3. DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases. (this allows a new DNA strand to be made on the existing one)
4. Free floating nucleotides pair up with exposed nitrogen bases (this is what really builds the new strand, based around the template strand)
5. Two new molecules of DNA are created
Statements:
Adenine
Cytosine (Car in the Garage, Apple in a Tree is a good trick to know how they pair)
DNA
Replication
Double helix
Describe how the shape of the moon has changed over the course of three weeks.
the moon appears as a round ball in the night sky
the moon appears as a sliver in the night sky
The moon has changed its shape from a crescent to a circle.
The moon has changed its shape from a crescent to a half circle.
The moon has changed its shape from a full circle to a crescent.
The moon has changed its shape from a full circle to a three-quarter circle. science
Answers
About three weeks after the new moon, the moon will change its shape from a full circle to a crescent.
Why does the moon change shape over the course of a month?The Moon appears to change shape over the course of a month due to its position in relation to the Sun and the Earth. The Moon does not emit its own light; rather, it reflects sunlight.
As the Moon orbits around the Earth, different amounts of sunlight are reflected back to Earth, creating the various phases of the Moon.
When the Moon is positioned between the Earth and the Sun, the side facing the Earth is not illuminated, and this is known as the new moon phase.
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True or false: in the phosphate sensory system, the sensor kinase PhoR is sensing the levels of phosphate in the cell by binding to phosphate ions
Answers
True. In the phosphate sensory system, the sensor kinase PhoR is responsible for sensing the levels of phosphate in the cell.
In bacteria, the phosphate sensory system is a mechanism that allows the cell to monitor and respond to the availability of phosphate, an essential nutrient for cellular processes. The sensor kinase PhoR plays a crucial role in this system.
PhoR is a membrane-bound protein that spans the bacterial cell membrane. It has a sensing domain on the outside of the cell and a kinase domain on the inside. The sensing domain of PhoR is responsible for detecting the concentration of extracellular phosphate ions.
When phosphate levels in the cell environment are low, phosphate ions are scarce outside the cell. In this condition, PhoR detects the low phosphate concentration by binding to the phosphate ions present in the environment. The binding of phosphate ions to the sensing domain of PhoR triggers a conformational change in the protein.
The conformational change in PhoR leads to the autophosphorylation of the kinase domain. The kinase domain of PhoR adds a phosphate group to a specific histidine residue within the protein itself, resulting in the activation of PhoR.
Once activated, PhoR phosphorylates a response regulator protein called PhoB. PhoB, when phosphorylated, undergoes a conformational change that enables it to bind to specific DNA sequences known as Pho boxes in the bacterial genome.
When PhoB binds to the Pho boxes, it acts as a transcription factor, initiating the transcription of genes involved in phosphate uptake and metabolism. These genes encode proteins that enable the cell to scavenge phosphate from the environment or utilize alternative phosphate sources.
The activation of the phosphate uptake and metabolism genes allows the cell to adapt to the low phosphate conditions by increasing its ability to acquire and utilize phosphate. Once the phosphate levels in the environment are restored, the phosphate sensory system is downregulated, and the signaling cascade is attenuated.
Overall, the phosphate sensory system, with PhoR as the sensor kinase, enables bacteria to sense and respond to changes in phosphate availability, ensuring their survival and efficient utilization of this vital nutrient.
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Fill in the blanks:
In photosynthesis, ____________________ energy is transformed into __________________energy and _______________________ gas is released. In cellular respiration, ________________ is broken down and __________ gas is released.
Answers
Answer:
Fill in the blanks:
In photosynthesis, light energy is transformed chemical energy carbon dioxide gas is released. In cellular respiration, a glucose molecule is broken down and carbon dioxide gas is released.
Explanation: Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct. During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
Which two characteristics do all animals have?
Answers
Answer:
All animals are eukaryotic, multicellular organisms, and most animals have complex tissue structure with differentiated and specialized tissue. Animals are heterotrophs; they must consume living or dead organisms since they cannot synthesize their own food and can be carnivores, herbivores, omnivores, or parasites.
Explanation:
The two characteristics that all animals have in common is that their cells have a nucleus and membrane-bound organelles. The correct option is C.
What are eukaryotic organisms?Eukaryotes are organisms whose cells have membrane-bound organelles in addition to a nucleus.
Eukaryotic creatures come in a great variety, including most algae, all animals, plants, fungus, and protists.
Prokaryotes are creatures without a nucleus or other organelles in their cells. Bacteria and archaea, two separate groupings of prokaryotes with allegedly independent evolutionary histories, are separated into.
The majority of prokaryotes are tiny, single-celled creatures with a straightforward structure.
Each animal has a cell that is composed of different organelles, including the nucleus, which houses all of the essential information, including DNA, and a membrane-bound organelle that protects and molds the cell.
As a result, the nucleus and membrane-bound organelles are among animals' shared traits.
Thus, the correct option is C.
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Your question seems incomplete, the missing options are:
O They are symmetrical and heterotrophic
O They are heterotrophs and have a backbone.
O Their cells have a nucleus and membrane-bound organelles.
O They have a backbone, and their cells have membrane-bound organelles.
What molecule did the work of Griffith, Avery, Hershey & Chase confirm was the molecule that made up genes?
Answers
Answer:
The answer would be DNA.
How and why might the R0 value change over time during an outbreak? pls help
Answers
Answer:
Vaccinations
Explanation:
For example, if a disease has an R0 of 18, a person who has the disease will transmit it to an average of 18 other people. That replication will continue if no one has been vaccinated against the disease or is already immune to it in their community. So if you have (for example) a vaccination then you're less likely to get it, resulting in a lower R0
1. Which resource would best be categorized as inexhaustible?
a. oil reserves
b. fisheries
c. solar energy
d. forests
e. coal reserves
Answers
Answer:C
Explanation:
The Sun will illuminate us for billions years whereas the rest of the answer choices can be exhausted and used up completely.
Solar Energy would best be categorized as inexhaustible. So, the correct option is (C).
What are Renewable and Non-Renewable resources?Resources are divided as renewable or non-renewable. A renewable resource can renew itself at the rate it is used, while a non-renewable resource has a limited supply. Examples of renewable resources are timber, wind and solar while non-renewable resources are coal and natural gas.
Renewable energy is the energy which can be used repeatedly and it is renewed again after a short period of time which is defined as the type of energy resources that can be renewed naturally. Renewable sources of energy can replace the conventional sources of energy which produce harmful gases which are harmful as well as costly.
Non-renewable resources are those which cannot be reused or reproduced, it is used only once and takes a long time to reproduce. These are also not good for the environment. Burning fossil fuels harms our environment.
Thus, Solar Energy would best be categorized as inexhaustible. So, the correct option is (C).
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which microbial control method best describes how an autoclave sterilizes material?
Answers
The microbial control method that best describes how an autoclave sterilizes material is heat sterilization.
An autoclave is a type of pressure cooker that uses steam to sterilize equipment and other objects. The autoclave works by heating the water inside it to create steam, which is then pressurized to create a high temperature environment that can kill microorganisms. The heat and pressure combination is effective in destroying most forms of bacteria, viruses, and fungi. This method is commonly used in hospitals, laboratories, and other settings where sterile equipment is necessary.
In summary, an autoclave sterilizes material through the use of heat sterilization, which involves the use of high temperature steam and pressure to kill microorganisms.
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Sponges, cnidarians, and echinoderms are found only in watery environments. Explain why their bodies are better suited to living in water than living on land ?
Answers
Sponges, cnidarians, and echinoderms are aquatic animals, which means they have adapted over time to live in a watery environment. There are several reasons Support, Movement, Gas exchange
why their bodies are better suited to living in water than living on land ?
Support: Water provides buoyancy, which helps support the weight of the animal's body. In contrast, on land, animals must support their own weight against gravity, which requires more structural support.
Movement: Water is denser than air, so it provides more resistance to movement. This means that aquatic animals can move more easily and efficiently in water than on land. Additionally, many aquatic animals have developed specialized appendages, such as tentacles or fins, that are optimized for swimming or crawling in water.
Gas exchange: Aquatic animals obtain oxygen and release carbon dioxide through their gills or other specialized respiratory structures. This method of gas exchange is more efficient in water than on land, where animals must actively breathe in and out to exchange gases.
Temperature regulation: Water has a high heat capacity, which means it can absorb and retain heat more effectively than air. This makes it easier for aquatic animals to regulate their body temperature in a stable environment.
Overall, the physical properties of water make it a more hospitable environment for certain types of animals, such as sponges, cnidarians, and echinoderms, than land. These animals have evolved specialized adaptations to help them survive and thrive in the aquatic
environment.
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2. What type of waves does light travel in? A.Transverse waves
B.Longitudinal waves
Answers
Answer:
hey there!Explanation:
the answer is option A.transverse waves
hope it helped and have a great day!which president advocated health care reform but never submitted a proposal to congress?
Answers
President Richard Nixon did not propose or advocate for a comprehensive healthcare reform plan during his presidency. While Nixon did discuss healthcare issues and propose some health-related policies, he did not put forth a specific comprehensive healthcare plan or submit one to Congress.
The confusion may arise from the fact that President Nixon did express support for the idea of universal health care coverage in his State of the Union address in 1974. He stated that comprehensive health care reform was a goal and called on Congress to develop a plan to achieve it. However, he did not provide detailed proposals or legislation specifically focused on healthcare reform during his presidency.
It's important to note that the development and passage of major healthcare reform in the United States occurred several decades later, with the passage of the Affordable Care Act (ACA) under President Barack Obama in 2010. The ACA aimed to expand access to health insurance coverage and implement various reforms in the health care system.
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Which are the methods by which pasts can be controlled
Answers
Answer:
we can distinguish several different pest control methods which include biological pest control, mechanical pest control.............
Explanation:
Control methods Biological pest control. Cultural control. Trap cropping. Pesticides. Physical pest control. Poisoned bait. Fumigation. Sterilization.Answer:
Methods of pest control:
Biological pest control.
Cultural control.
Trap cropping.
Pesticides.
Physical pest control.
Poisoned bait.
Fumigation.
Sterilization.
I FOUND THIS ON GOOGLE BTW
hope it helps : D
Explanation:
Population density is calculated by
Answers
Answer:
C.
Explanation:
To calculate the population density, you will divide the population by the size of the area. Thus, Population Density = Number of People/Land Area. The unit of land area should be square miles or square kilometers. You can use square feet or meters if you are finding the density of a smallish space.
Answer:
a on edge
Explanation:
dont trust c i got it 100%
many biologists think the current rate of species extinction indicates that a sixth mass extinction is underway. life has endured numerous mass extinctions and has always bounced back. how might the impact of human activities make this sixth mass extinction different from previous mass extinctions?
Answers
The 6th mass extinction is likewise known as the Anthropocene extinction and it's miles one-of-a-kind from the preceding 5 due to the fact it's miles especially resulting from humans.
This extinction is one hundred to one thousand instances quicker than the ultimate 5 extinctions and if it progresses withinside the following charge 1/2 of of the world's species could be wiped out.
Unlike preceding extinction activities resulting from herbal phenomena, the 6th mass extinction is pushed through human activity, primarily (aleven though now no longer restrained to) the unsustainable use of land, water and electricity use, and weather change.
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What is the function of decomposers in
a balanced ecosystem?
A. They take the nutrients out of rocks and minerals to
enrich the soil.
B. They return nutrients to the soil from dead and
decaying matter.
C. They enrich the soil using only water and air to
increase the nutrient levels.
Answers
Answer:
B
Explanation:
they decompose the dead and get the nutrients from them
this is correct
If the Peclet number for the transport of a drug in tissue is 0. 1, what is the dominant mechanism of transport?
Answers
The Peclet number for the transport of a drug in tissue is 0. 1, the dominant mechanism of transport is Diffusive transport.
Diffusive transport is a far more sophisticated mechanism than convective transport in porous electrodes. The electrochemical reactions that occur within the catalyst layer's three border zones consume the reactants to produce the end products. This results in component concentration gradients inside the catalyst layer and throughout the gas diffusion layer. The concentration gradients are the primary drivers of species diffusive movement.
The Péclet number is a class of dimensionless numbers that may be used to explore transport processes in a continuum. It is defined as the ratio of a physical quantity's rate of advection by flow to the rate of diffusion of the same quantity driven by an appropriate gradient.
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Not trying to be racist but uh....was Jesus actually white?- I WILL GIVE 100 POINTS AND BRAIN LIST TO THE PERSON WHO ANSWERS TRUTHFULLY!
Answers
Answer:
I'm pretty sure Jesus was white. In any paintings that were depicted of him he was a tall, pale, and thin man with light brown, long hair and a beard. I have a plate that hangs in my house on our wall with a picture of him and that is how he looks. And it also determined that he would have most likely looked like a typical Galilean Semite of his day. I believe that there were people of color in the biblical days but it was never proven that Jesus was, so I'm gonna say, no. Jesus is white.
Explanation:
Hope it helps! =D
Answer:
I would say no.
Explanation:
Despite the illustrations and paintings it would have been highly unlikely in the area he was born into to be white. I think the white illustrations may have just came from a prejudiced past when people actually believed race made someone better or worse.
( and no that doesn't mean I think he is black either , in his area it would be more common to just have a darker tone, so think lightskin when I say "Not white".) btw dont give me brainliest , if you cant tell this is the first question ive answered so im clearly not someone who needs it.
in what circumstances would natural selection favor individuals with accelerated development of reproduction traits relative to somatic traits?
Answers
when prey used during the development of an animal is more common than prey utilized when an animal is an adult.
What is reproduction explain?Procreation and asexual reproduction are the two basic forms. Any organism that reproduces physically inherits both of its parents' genes while also being genetically unique. Genetically identical children are produced through asexual reproduction via having one parent repeat itself.
What are types of reproduction?These two different types human reproduction are asexual reproduction and procreation. Even though asexual reproduction is faster and much more energy-efficient, procreation better promotes genetic variety via novel allele combinations throughout meiosis and fertilization.
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How do i complete the punnet square
Answers
pls answer this question
Answers
The pair of characteristics (similarity and difference) that are both correct comparisons of Darwin and Wallace are:
Both Darwin's and Wallace's ideas about natural selection were revealed to the scientific community at the same time.The correct option is D.
What was common about Darwin and Wallace?Charles Darwin and Alfred Russel Wallace were both naturalists in the middle of the nineteenth century, and independently developed the idea of natural selection.
Darwin's ideas about natural selection were inspired by what he observed on the Galápagos Islands, while Wallace's ideas about natural selection were inspired by what he observed on the Malay Archipelago.
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In an experiment, a researcher prepares a reaction mixture by dissolving a substance in a buffered solution. The substance is the substrate of a certain enzyme. The researcher adds a small amount of the enzyme to the reaction mixture and measures the amount of product that is formed over time. Which of the following best predicts the immediate result of adding more substrate to the reaction mixture at the point indicated by the arrow in Figure 1?
answer choices
The amount of product will decrease until the reaction rate goes to zero.
The amount of product will increase until the reaction reaches its equilibrium point or until the substrate is used up by the reaction.
The amount of product will increase without stopping because the enzyme will be unchanged by the reaction.
The amount of product will decrease until the reaction reaches its equilibrium point or until the enzyme is been used up by the reaction
Answers
Until equilibrium is reached or all of the substrate has been eaten, the amount of product will continue to increase.
How can the rate at which an enzyme-catalyzed reaction occurs be determined?It is possible to identify enzyme catalysis by measuring the appearance of the product or the disappearance of the reactants. The same reactants may be used in a reaction, but a different catalyst may produce different results.
Which of the following would speed up how quickly reactants turn into products in a chemical reaction?The more the temperature rises, the more crashes occur. As a reactant's concentration rises, the likelihood of reactant collisions increases as well, accelerating the rate of the reaction.
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