Answer:
The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
6. Which process is most responsible for the
formation of sand dunes?
A water erosion
В volcanism
C wind erosion
D glaciation
Answer:
C wind erosion is most responsible for the formation of sand dunes.
Explanation:
Sand dunes are formed when wind blows loose sand from a beach, desert, or other location, and deposits it in a new location. The sand is then shaped by the wind into dunes, which can vary in size and shape depending on the strength and direction of the wind. Water erosion, volcanism, and glaciation can all also contribute to the formation of sand dunes to some extent, but wind erosion is typically the primary process responsible for their formation.
you are in the year where the earth has no more land available for houses you decide to build an apartment up and need things to survive in each earths 5 layers (troposphere,stratosphere, mesosphere, thermosphere, exosphere) Question: what things would you need to survive the stratosphere (starts cold and ends hot)
Answer:
To survive in the stratosphere, you would need a space suit with a pressurized environment, oxygen tanks, a heat source, and a cooling system. You would also need a means of propulsion, such as a rocket or jetpack, to move around. In addition, you would need a way to communicate with other people on the ground or in other parts of the stratosphere. Finally, you would need a way to protect yourself from the extreme temperatures and radiation in the stratosphere.
Explanation:
Evolution: natural and artificial selection gizmos answer key?
Answer:
Here are some answers I found. It isn't all of them, but it might help. You get some of the answers, which is better than nothing. You have to pay if you want all the answers though :(
Explanation:
https://www.coursehero.com/file/p5pk211a/Summarize-How-are-the-processes-of-natural-selection-and-artificial-selection/
https://www.coursehero.com/file/28264145/EvolutionNaturalArtificialSEdocx/
Darwin had seen these birds on a visit in the 1830s to the Galápagos Islands, a collection of islands in the Pacific Ocean to the west of South America.
What is Artificial selection?Artificial selection is the process of identifying desirable qualities in plants and animals and then taking action to strengthen and pass those traits on to succeeding generations.
Artificial selection operates in a similar manner to natural selection, with the exception that in natural selection, these judgments are made by nature without human intervention.
The physical characteristics and behaviors of many kinds of birds known as finches were highlighted by British naturalist and biologist Charles Darwin in his 1859 book On the Origin of kinds, which outlined the evidence for his hypothesis of evolution by natural selection.
Therefore, Darwin had seen these birds on a visit in the 1830s to the Galápagos Islands, a collection of islands in the Pacific Ocean to the west of South America.
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Helpppppppp plsss it’s due at 11:59
The component of a vaccine that makes it effective is the antigen.
What is a Vaccine?
A vaccine is a biological preparation that induces active acquired immunity to a specific disease. It contains an agent that resembles an infective microorganism and is frequently composed of weakened or killed forms of the microbe, its toxins, or one of its surface proteins. Vaccines are intended to stimulate the body's own immune system in order to protect the individual from future infection or disease.
11) An antigen is a substance that causes the body to produce antibodies when it enters the body. These antibodies help the body recognize and fight the antigen if it enters the body again.
12) A vaccination is a way of introducing a weakened or killed version of a particular virus, bacteria, or toxin into the body. This weak or dead version of the virus, bacteria, or toxin stimulates the body's natural defense system to produce antibodies that are specific to that virus, bacteria, or toxin. These antibodies can then recognize and fight off the real virus, bacteria, or toxin if the body is ever exposed to it, thus preventing the individual from getting the disease. This is known as active immunity. The immunity created by the vaccination is typically long-lasting, and in many cases, lifelong.
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If there is a nondisjunction during Meiosis II, what number of chromosomes or chromatids will the cells have in them at telophase II?
Which greenhouse gas is internationally regulated due to its impact on the ozone?
Answer:
Chlorofluorocarbons (CFCs)
hope it helps.
Answer:
hope it's helps you have a great day keep smiling be happy stay safe.pleasssseeeee helppppppppp
Answer:
Primary Succession
Pioneer species are lichen/mossSuccession begins on rockTakes more time to reach a climax communityVolcanic eruptions, Sandstorms, or Glaciers retreatingSecondary Succession
Pioneer species are grassesSuccession begins on soilTakes less time to reach a climax communityClearing land or forest firesHow do spectroscopes help with studying of distance stars? A. it breaks apart lights that comes from Stars far away. B. it gives a clear image of the shape of stars. C. it collects sound waves from distant Stars. D. it measures the distance of far away Stars.
Answer:
"It lets you see the chemicals being absorbed or emitted by the light source.
An organism has a mutation in a gene that blocks its function. What effect will the mutation have on the organism?
The organism will be unable to replace cells through mitosis
The organism will not produce the protein coded by the gene
The organism will have fewer chromosomes.
The organism will create more daughter cells from meiosis.
Answer: The organism will not produce the protein coded by the gene.
Explanation:
The effect that will the mutation have on the organism is the organism will not produce the protein coded by the gene. Thus, the correct option for this question is B.
What is Mutation?A Mutation may be defined as the sudden, stable, and inheritable changes in the genetic material of organisms. The organism which undergoes mutation is known as a mutant. The agents of mutation are known as mutagens.
The Mutation leads to alterations in the genomic sequences of an organism. Due to this, the proteins formed are different compared to normal. The function of the previous protein is blocked and a new function is visualized.
So, if an organism has a mutation in a gene that blocks its function, the organism will definitely not be able to the protein coded by that gene.
Therefore, the organism will not produce the protein coded by the gene is the effect that will the mutation have on the organism. Thus, the correct option for this question is B.
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describe the process of blood clothing
Answer:
Blood clotting normally occurs when there is damage to a blood vessel.
Explanation:
Platelets immediately begin to adhere to the cut edges of the vessel and release chemicals to attract even more platelets. A platelet plug is formed, and the external bleeding stops.
Next, small molecules, called clotting factors, cause strands of blood-borne materials, called fibrin, to stick together and seal the inside of the wound. Eventually, the cut blood vessel heals and the blood clot dissolves after a few days.
Please mark me as brainliest :)
Answer:
I think you mean blood clotting so umm
Explanation:
Blood is made up of many different cells—mostly red blood cells, white blood cells and platelets—as well as clotting factors. These and other elements float through blood vessels in a strawlike liquid called plasma.
The coagulation cascade is a complex chemical process that uses as many as 10 different proteins (called blood clotting factors or coagulation factors) that are found in plasma. Put simply, the clotting process changes blood from a liquid to a solid at the site of an injury. Here’s how the process works:
Injury. A cut on the skin or an internal injury creates a small tear in a blood vessel wall, which causes blood flow.
Vessel constriction. To control blood loss, the blood vessel immediately narrows (called constriction), which limits blood flow through the vessel.
Platelet plug. In response to the injury, tiny cells in the blood called platelets are activated. The platelets stick to one another and to the wound site to form a plug. The protein von Willebrand factor (VWF) helps the platelets stick to each other and to the blood vessel wall.
Fibrin clot. Next, blood clotting factors trigger production of fibrin, which is a strong, strandlike substance that surrounds the platelet plug and forms a fibrin clot, a meshlike net that keeps the plug firm and stable. Over the next several days to weeks, the clot strengthens and then dissolves as the wounded blood vessel wall heals.
Overhead view of mountains and rivers. Label B is at smaller flows of water that meet to create a larger flow of water at Label A.
Use the drop-down menu to identify what each label shows.
A
✔ river
B
✔ tributary
The diagram Illustrated shows that A is a river and B is a tributary.
What is a river?A river is a body of water that resembles a ribbon and moves downward under the influence of gravity. A river may be both wide and deep or it may be only shallow enough to wade across.
A stream or river that empties into a larger stream, main stem river, or lake is referred to as a tributary or affluent. A tributary does not empty into the sea or the ocean directly. The surrounding drainage basin is drained of its surface water and groundwater by tributaries and the main stem river, which discharges the water into the ocean.
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A healthy yellow leaf has
A, No chloroplast
B, xanthophylls
C, no living cell
D, No photosynthesis
a healthy yellow leaf has no chloroplast.
The unicellular green alga Chlorella is often used as a model organism to study the effects of various substances on the growth of photosynthetic organisms. Researchers studying the detoxification of certain metals by Chlorella first collected data on the growth dynamics of the alga. A small number of Chlorella were added to 1,500 mL of culture medium that contained all of the inorganic nutrients needed for growth. Every five days for 30 days, the researchers performed multiple counts to determine the concentration of Chlorella in the culture. a. Describe why the amount of light available to the Chlorella culture might affect the growth dynamics of the alga.
Answer:
It depends on the light for its growth.
Explanation:
The amount of light available to the Chlorella culture might affect the growth dynamics of the algae because Chlorella is just like plant that prepare their own food with the presence of light. If there is more amount of light received by the Chlorella algae, it prepare more food and more growth occurs while on the other hand, if there is less amount of light available to Chlorella algae so it produce less amount of food and less growth will occur.
Scientists once thought that life spontaneously arose from nonliving things. It took extensive experimentation and the invention of new technology to confirm the tenets that now make up the cell theory. Now, we don't even question that cells are the basic units of life and only come from preexisting cells. What technology had the biggest impact on the development of the cell theory? (LS.2c)
Question 3 options:
centrifuge
electrophoresis
microscope
telescope
Question 5
1 Q) Which of the following best describes an ecosystem?
1) A list of all plant and animal species found in the California desert
2) All of the white-tailed deer in a forest
3) Sunlight, temperature, rainfall, water sources in an area
4) An entire rainforest, including all biotic and abiotic factors
2 Q) Which of the following happened after wolves were removed from Yellowstone's ecosystem?
1) Biodiversity dramatically increased
2) The elk overgrazed the habitat vegetation of other species
3) Biodiversity was unaffected
4) The elk population rapidly decreased
3 Q) Which features are used to describe a biome?
1) Climate, wildlife, and vegetation
2) Longitude and latitude
3) Common name, scientific name, and conservation status
4) Bacteria, Archaea, and Eukarya
4 Q) Which statement is correct about biomes?
1) They represent large geographic areas
2) They all have about the same species richness
3) Water biomes are not as complex as land biomes
4) Biomes can be as small as a pond
5 Q) Which of the following is the largest biome on earth by area?
1) Tundra
2) Marine
3) Temperate Grassland
4) Desert
Answer:
An entire rainforest. The elk overgrazed.Climate, wildlife, and vegetationThey represent large geoMarine
What is breeding,explain in fully ?
➡️ When viewed from the perspective of the Turkish Language Institution in general, the meaning of "correction or improvement" stands out for the word reform. To express it as to make any situation better.
byy••Answer:
Breeding is mating or if an animal wants to reproduce (like having s e x), they will breed and have children. Humans are like the same. If humans want children, then humans mate because we're also animals...
Explanation:
man that was awkward
Which growing season is longest? The deciduous forest biome or the desert biome?
Answer:desert biome
Explanation: because the desert go a long way and probably does not
stop for 100 miles or more. :/
Answer:
the diciduous forest biome because it grows all four seasons
Explanation:
What terms identifies multiple pathways for energy flow within an area
Can an intersex male get his female pregant with his sperm? ( like a non intersex male)
Answer:
If an intersex person has a penis and testes that make sperm, they may be able to cause a pregnancy
Explanation:
Daily rate of spermatogenesis
Answer: What's the rate of sperm production? Your testicles are constantly producing new sperm in spermatogenesis. The full process takes about 64 days. During spermatogenesis, your testicles make several million sperm per day — about 1,500 per second.
Explanation:
hope this wroks have a good day
If a pure red flower is crossed with a pure white flower and neither allele is completely
dominant over the other, what will the offspring's phenotype look like?
y. 100% red flowers
z. 100% white flowers I
aa.50% red flowers and 50% white flowers
bb. 100% pink flowers
Answer:
100% pink flowers
Explanation:
If neither allele is dominant, it will create incomplete dominance. So the offspring will neither be red nor white, the offspring will be pink.
Adults can best help young children learn movements by
Adults can best help young children learn movements by Introducing toys that children can push and pull. You can use bright colors can also be helpful.
Ways adults can best help young children learn movements are:Providing Toys and equipments children can push and pull.Practics some fun games with them eg football.Play the same games repeatedly with them. Learning to take turns is an important social skill best learned through physical play. Stay close by, pay close attention and watch out for risks. Put markings on the floor to increase a child’s physical activity.Provide enough space to run around.ensuring a safe play space and safe toys for the child. When the child is really engaged in play on their own, let them be.Learn more about learn movements on
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How do stars recycle matter?
A. They stay on the main sequence m.
B. Black holes form and recycle gas for new stars.
C. Gravity pulls together gases and matter from old stars to create new ones.
Explanation is[tex]^{}[/tex] in a file
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PLEASE HELP MEEE I NEED HELP ON THIS QUESTION
Answer:
C. Spore formation
Explanation:
Option C above is the correct answer.
Spore formation is actually a method of asexual reproduction. Fungi actually reproduce asexually via spore formation. Some examples of organisms that reproduce via spore formation are Rhizopus, mushroom, mucor, etc.
The spores are usually stored in sacs which are known as sporangia. When there is a bursting of the sac, spores that are single-celled, thick and thin walled are obtained/formed. The spores are usually resistant to environmental conditions.
Pentane with molecular formula C5H12, exists in three isomeric forms. One shows linear carbon chains, another has one -CH3 groups present on the third carbon atom, and the third has two -CH3 groups present on the second carbon atom. What types of isomers are these?
A.
Geometric isomers
B.
Structural isomers
C.
Halotropic isomers
The types of isomers present in Pentane with molecular formula C5H12 are Structural isomers, option B.
What is Structural Isomerism?Structural isomers are isomers in which the atoms are completely different in order but have the same molecular formulas. Structural isomerism occurs when molecules have the same molecular formula but a different structural formula.
Different types of structural isomerism include chain isomerism, position isomerism, and functional group isomerism. C5H12 exists as three chain isomers, one -CH3 groups and two -CH3 groups. Because more branched isomers have weaker Van der Waals forces and thus lower boiling points, chain isomers have similar chemical properties but different physical properties.
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Which of the following is not a step in the mass production of an organic substrate in a fermentor?
Select one:
a. Inoculate the sterile media in the growth vessel with the microbe of interest.
b. Adjust the environmental conditions for optimal growth of the organism.
c. Add enzymes to catalyze all required steps in the process.
d. Harvest cells and purify the product.
e. Remove waste products and dispose responsibly.
Answer:
c. Add enzymes to catalyze all required steps in the process.
Please select the word from the list that best fits the definition Brings drizzly rain
The word that bests fits the definition "Brings drizzly rain" is Brings precipitation.
What is precipitation?Any liquid or frozen water that forms in the atmosphere and falls back to Earth is referred to as precipitation. It takes many forms, including rain, sleet, and snow. Precipitation, along with evaporation and condensation, is one of the three major components of the global water cycle.
Without changing the meaning of the sentence, the best word that replaces drizzly rain is precipitation which is considered to mean light showers. Rain is water droplets that fall to the Earth's surface as precipitation.
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The fossil of S. crassirostris was found in limestone that formed in a warm sea-
water lagoon. What could you infer were the feeding habits and food of this
animal? Explain your answer.
The location of the fossil of S. crassirostris suggests that they might have eaten similar to modern-day "skimmers," a rare breed of shorebirds from the genus Rynchops that flies over still bodies of water and uses its submerged lower jaw to scoop up small fish and crustaceans.
What are Feeding Habits?The term "feeding habit" can apply to both the type of food that an animal consumes and the manner in which it obtains it.
Fossils are any surviving remains, impressions, or evidence of a once-living thing from a previous geological epoch. Examples include exoskeletons, bones, shells, animal or microbe imprints in stone, items preserved in amber, hair, petrified wood, and DNA traces.
An example is the fossil of S. crassirostris was found in limestone that formed in a warm sea-water lagoon.
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Bears stop coming to a river ecosystem where they have been eating many fish each day. The fish the bears eat
normally eat smaller fish, which eat plants along the river bottom
What happens to the ecosystem?
The larger fish population will drop first and the smaller fish population will grow quickly. The plants will
die off because too many of the smaller fish are eating them
The smaller fish population begins to eat more plants and to grow. The larger fish have more food to
eat so their population is able to grow, too.
The larger fish population explodes at first, and the smaller fish population begins to drop. Eventually
the river runs out of smaller fish so larger fish die out, and the plant population grows.
Both the larger and the smaller fish populations grow quickly but then die out because the plant life is
insufficient for them all to eat
Answer:
Both the larger and the smaller fish populations grow quickly but then die out because the plant life is
insufficient for them all to eat
Explanation:
Do red blood cells have heterochromatin?
Yes, red blood cells have heterochromatin. Heterochromatin is a part of eukaryotic genomes responsible for gene expression DNA Repair and replication.
Differentiation of Erythroid to mature red blood cells(RBC) is done by multiple erythropoietin operated by signal transduction pathways, this process is also called terminal erythropoiesis. During this process chromatin gradually condenses which is critical for red cell terminal differentiation and final enucleation.
Therefore, the deciphered red blood cells could gain more space for hemoglobin development and flexibility to pass through terminal capillaries.
Chromatin exists in two forms euchromatin, is less condensed, and can be duplicated whereas heterochromatin, is highly concentrated and is typically not duplicated.
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