Describe what a spreading center is and how a volcano
forms there.
Explanation:
Spreading center volcanism occurs at the site of mid-oceanic ridges, where two plates diverage from one another. As the plates are pulled apart, hot ashtenophere rise upward to fill voids of the extended lithosphere.
Why is the normal range for the mass of DNA in a male cat cell lower than for a female cat?
A
The male cat has less chromosome pairs than the female cat.
B.
The male cat is XY, while the female cat is XX, and the Y chromosome is
smaller than the X.
с
The female has more diploid cells and less haploid cells, so the average
mass of DNA in each female cell is higher.
Answer:
B: The male cat is XY, while the female cat is XX, and the Y chromosome is
smaller than the X.
Explanation:
Y chromosomes are smaller than X chromosomes so the mass of DNA is smaller in male cells than female cells
The Y chromosome is smaller than the X chromosome. So, there is less nucleotide in the DNA of a female cat. Hence, option B is correct
What is DNA?DNA stands for deoxyribonucleic acid and it is a polymer of nucleotides. It is double-stranded in structure. It is hereditary material present in the cells of organisms. Nucleotides consist of pentose sugar, nitrogenous bases, and phosphate.
DNA is organized in the nucleus in the form of dense protein complexes known as chromosomes. 38 chromosomes are present in cats. There are two types of chromosomes in cats X and Y. Male cat contains XY chromosomes and female cat contains XX chromosomes. The Y chromosome is shorter than the X chromosome.
Therefore, the normal range of the mass of DNA in a male cat cell is lower than that of a female cat. Hence, option B is correct
Learn more about DNA, here:
https://brainly.com/question/31098
#SPJ5
A Carbon Sink is a reservoir which absorbs more carbon than it releases. Suggest how carbon in the bodies of crustaceans and molluscs is removed from the oceanic food chain to become part of another, slower carbon reservoir.
Answer:
Crustaceans and Molluscs play an important role in the oceanic carbon sink.
Explanation:
Carbon sinks can serve to partially offset greenhouse gas emissions. Forests and oceans are both large carbon sinks. Algae is pressurized to bottom of the ocean by long term sequestration. Algae then falls to the bottom of the ocean and TRANSFORMS to fossil fuels.
CO2 is not combustible. creates carbonic acid in the oceans. Reduces seawater pH, carbonate ion concentration, and thus calcium carbonate (needed for shells for marine creatures, contributes to BOTTOM-UP EFFECT)If helpful, please mark as brainliest! =)
A food chain consists of a seagull eating a dead swordfish that had eaten a bluefish. The bluefish had eaten shrimp that had eaten photosynthetic algae.
Which organism in this food chain can be classified as a scavenger.
a. Seagull
b. Bluefish
c. Swordfish
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Why is it helpful for frogs to have bulging eyes?
Answer:
It is helpful for frogs to have bulging eyes because it allows them to see in all directions such as in front of them, to the sides, and partially behind them. The frog's eyes that are positioned above their head give them a field of vision of almost 180 degrees, this helps them spot predators and prey easier and quicker.
Explanation:
where does diffusion take place in the nervous system?
Answer:
In diffuse systems nerve cells are disseminated all through the life form, generally underneath the external epidermal layer. Hope this helps.
Explanation:
How can planting a large area of just one variety of plant cause problems for both a farmer and an ecosystem?
Answer:
Particular plants use particular nutrients from the soil. If you were to consistently plant a large number of plants, of the same species, in the same area. The plant will use all of the nutrients it needs, before the nutrients are replenished. This can cause a decrease in the farmer's yield. By doing this you also create a habbitat for pests. Some pests live off to certain plants, so if your not planting other crops, the pests will thrive. Plating a variety of crops is good because some plants will repel pests from other crops that the pests may be attracted too.
At which time points did the scientists take measurements? (Attachment)
Answer:
(0,0) (2,45) (4,25) (6,20)
Explanation:
3.What is the difference between a dominant and a recessive trait?
Answer:
Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.
Explanation:
As the train rushed down the hill, gravitational potential energy was converted into kinetic
energy.
Which piece of evidence best supports the claim?
A. The speed of the train increased as the height of the
train decreased
B.The people in the train felt like they were being
pushed down at the bottom of the hill,
C.The train kept moving when it reached the flat part of
the track
Answer:
A. The speed of the train increased as the height of the
train decreased
Explanation:
En una isla oceánica aislada hay una especie de pájaros, la
mayoría de plumaje gris. Una variedad con manchas blancas
constituye el 4% de la población. Esta característica se debe a un
gene recesivo (s) al del plumaje de color gris entero (S).
¿En qué frecuencia se encuentra el gene s?
a 0.3
b 0.2
c 0.1
d 0.05
Answer:
La frecuencia del alelo recesivo s es igual a 0.2 (opción b)
Explanation:
Datos disponibles:
Plumaje gris es el fenotipo dominantePlumaje con manchas blancas es el fenotipo recesivoS es el alelo dominante para plumaje griss es el alelo recesivo para plumaje manchadoVariedad manchada representa el 4% de la población.Si ejemplares con ala manchada y genotipo ss representan el 4% de la población, entonces los restantes 96% corresponden a ejemplares grises homocigotas dominantes SS y heterocigotas Ss. Las frecuencias fenotípicas serán:
Plumaje gris (SS + Ss) = 96% = 0.96Plumaje manchado (ss) = 4% = 0.04De acuerdo al equilibrio de Hardy-Winberg, la suma de las frecuencias alélicas equivale a 1, y la suma de las frecuencias genotípicas también equivale a 1.
Frecuencia del alelo dominante = pFrecuencia del alelo recesivo = qFrecuencia de genotipo homocigota dominante = p²Frecuencia de genotipo heterocigota = 2xpxqFrecuencia del genotipo homocigota recesivo = q²Entonces,
p + q = 1p² + 2pq + q² = 1Si la frecuencia genotípica del homocigota recesivo es 0.04, entonces la raíz cuadrada de ese valor es la frecuencia génica del alelo recesivo. Esto es:
q² = 0.04q = √0.04 = 0.2A partir de la ecuación p + q = 1, podemos calcular el valor de p.
p + q = 1
p + 0.2 = 1
p = 1 - 0.2
p = 0.8
Entonces la frecuencia genotípica del homocigota dominante es p²
p² = 0.8² = 0.64
Y la frecuencia genotípica del heterocigota es
2pq = 2 x p x q = 2 x 0.8 x 0.2 = 0.32
Para corroborar esto, la suma de todas las frecuencias genotípicas debe dar uno.
0.64 + 0.32 + 0.04 = 1
Usable fresh surface water is relatively scarce. To many people, streams and lakes are the most visible part of the water cycle. Not only do they supply the human population, animals, and plants with the freshwater they need to survive, but they are great places for people to have fun.
Answer:
True.
Explanation:
Usable fresh surface water is scarce. Freshwater is not in excess on our planet. We can find it on lakes, lagoons, rivers, and swamps, but it is only 3% of the totality of Earth's water. The importance of this water is that it is the one that is suitable for humans, a large number of plants, and animals. This is why there are different methods to store and distribute fresh water amongst all the population and places that need it. Besides, the places where freshwater is, are great for activities, such as swimming, sailing, rafting, diving, fishing, etc.
Since freshwater is scarce and has so many uses, we must take care of it.
What role can the environment play in gene expression?
Answer:
Internal and external environmental factors, like gender and temperature, influence gene expression. ... Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
Explanation:
Begin with the card with the word “Start” on it. Read the question or statement at the bottom of the card and find the matching answer at the top of another card within the set. Continue to navigate through the cards until all cards have been correctly matched and placed in order. Locate the symbol, letter, or number in the top-right corner of each card. Write the correct order of symbols, letters, and/or numbers in the spaces below.
Answer:
Inner core---Lava---Outer core---Magma---Mantle---Asthenosphere---Oceanic crust---Continental crust---Crust---Lithosphere,
Explanation:
Inner core is the last layer of the earth where lava is present. After that outer core is located where magma is present between outer core and the crust of the earth. After outer core, the layer of mantle is started which extends up to the crust. Asthenosphere is the layer that is present at the upper portion of the mantle and at the top, earth crust is located. Crust and upper portion of the mantle is also known as lithosphere.
Sedimentary rock tends to be porous and thus is more likely to be part of an aquifer than consolidated igneous rocks.
A true
B false
4. Give two examples of how you interact
with the carbon cycle.
Answer:
in the food chain, plants move carbon from the atmosphere into the biosphere through photosynthesis. ... Animals that eat plants digest the sugar molecules to get energy for their bodies. Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle.
Explanation:
I need help please with both of them
prevent
location
Explanation
A mutation is least likely to affect a cell when the mutation --
A mutation is least likely to affect a cell when the mutation is silent in nature or is not associated with an exon, it is least likely to affect a cell. Any mutation that happens to the introns does not affect the cell's function.
What is the function of cells and mutation?As genetic materials, nucleic acids encode information about the cell's structure and function, its proteins, receptors, and so on. The mRNA that is formed from the gene has roles in the formation of the receptor, the enzymes, etc., so if any mutation happens to the gene that is in the coding region, then it can show its impact, but if the mutation is of the silent type, then it has no impact on the cell.
Hence, when a mutation is silent in nature or is not associated with an exon, it is least likely to affect a cell. Any mutation that happens to the introns does not affect the cell's function.
Learn more about the mutation here.
https://brainly.com/question/17130462
#SPJ2
Vascular plants are able to grow taller than nonvascular plants because A. lignin in the cell walls of vascular tissue helps the plant overcome gravity. B. they can live in drier areas than nonvascular plants. C. they rely on osmosis to transport materials throughout the body of the plant. D. there is more sunlight in the areas where vascular plants live.
Answer:
c
Explanation:
Answer:
A
Explanation:
I got it wrong the first time
Can muscle fatigue be attained with short repetitive contractions in a 5 minute period?
Answer:
Muscle fatigue is a common complaint in clinical practice. In humans, muscle fatigue can be defined as exercise-induced decrease in the ability to produce force.
Explanation:
Hey Im Chloe, Can you Help me.
Which 2 age classes of deer are most affected by habitat quality?
Answer:
Additionally, see how survival of younger deer (fawns and yearlings) is reduced. Younger deer are the most sensitive to habitat quality and environmental events, thus reproduction and survival of fawns and yearlings can be a good indicator of habitat quality, or deer density relative to carrying capacity.
Explanation:
Answer:
Probably the small ones and the older ones
Explanation:
Explain in detail how CONVECTION heat transfer effects our weather?
Answer:
The sun's waves heat the ground, causing it to warm (radiation). The energy flows from the warmer ground to the cooler air (conduction), causing it to rise (convection). When the rising air reaches a certain point, it expands, cools, and the cooler expanded air can no longer hold as much water vapor so it rains.
Explanation:
Answer:
convection occurs over a very very long time in the earth's mantle. Rock slowly gets melted down from the core, then shoots back up from volcanoes. The new rocks get buried by sand and sediments, and the process resets.
Explanation:
CAN YOU PLS MARK ME BRAINLIEST THANK YOU HAVE A NICE DAY!
When the cells in the male and female parent divide, do them they form body cells or sex cells? Please explain!!!!!
Answer:
well i kinda think they form a body cell only ...
Which plant, shown in the cladogram below, shared a recent common ancestor with spikemosses and quilworths?
Answer:
Clubmosses
Explanation:
I don't really have an explanation
Which of the following statements is FALSE? *
The Rock Cycle is happening all the time on Earth.
Some processes of the Rock Cycle take a long time.
O All rocks were once Metamorphic Rocks.
O Most rocks on Earth are Igneous Rocks.
Answer:All rock were once metamorphic rocks
Explanation:
Melted rock deep inside Earth forms igneous rocks. Sand, silt, plant and animal skeletons make sedimentary rocks. Heat and pressure underground convert rocks into metamorphic rocks. Therefore, option (C) is correct.
What is rock cycle?The rock cycle is a web of processes that outlines how each of the three major rock types—igneous, metamorphic, and sedimentary—form and break down based on the various applications of heat and pressure over the course of time. Igneous rocks are rocks that are formed by volcanic eruptions, while metamorphic rocks are formed when heat and pressure are applied to preexisting rocks. Shale, a type of sedimentary rock, can be transformed into slate with the use of heat and pressure, for instance.
The rock cycle is an important component of our dynamic Earth because it allows rocks to shift from one type of rock to another based on their location and circumstances. It recycles rocks to build new structures when plate tectonics changes the Earth's surface.
Learn more about rock cycle, here:
https://brainly.com/question/15619429
#SPJ2
Which of the following DOES NOT contain a nucleus? *
Prokaryotic cell
O Plant cell
O Animal cell
O Eukaryotic cell
Answer:
The correct answer is A) prokaryotic cell.
Explanation:
Hope this helped Mark BRAINLIEST!!!
Now think about the following scenario...
As a family physician, you often treat children who suffer from infectious diseases that could easily be prevented through vaccination. But the parents of many of your patients cannot afford the cost of vaccinations. You hear of a new approach that would reduce the cost to a fraction of its current price: genetically modified fruits and vegetables that contain various vaccines. By simply eating a banana, a child could be protected against disease without getting a shot!
What would you do?
A. Encourage your patients to eat genetically modified fruits and vegetables
B. Continue to use the vaccinations despite the cost
Answer:
A
Explanation:
is the answer cuz just by eating a banana the disease can be prevented
Encouraging patients to eat genetically modified fruits and vegetables which protect them from getting sick. So, the correct option is (A).
What is Genetically Modified food?
Genetically modified foods are also known as GM foods or genetically engineered foods or bioengineered foods. These are produced from organisms whose DNA has been altered using genetic engineering methods.
These are derived from organisms whose genetic material (DNA) which has been modified in a way which does not occur naturally, e.g. through the introduction of genes from a different organism.
There are several benefits of GM foods in agriculture like
1. Increased crop yields
2. Reduced costs for food or drug production
3. Reduced need for pesticides
4. Enhanced nutrient composition and food quality,
Thus, encouraging patients to eat genetically modified fruits and vegetables which protect them from getting sick. So, the correct option is (A).
Learn more about Genetically Modified Foods, here
https://brainly.com/question/7589779
#SPJ2
An organism has 50 chromosomes in its body cells, how many chromosomes are in it’s sex cells?
There would be 25 chromosomes in the organism's sex cells, also called gametes.
This is because, during sexual reproduction, two gametes unite to form a zygote. Their chromosomes in this case combine to make 50. (Humans have 46 chromosomes in their body cells and 23 in their gametes.)
In short, the number of chromosomes in the gamete is half the number of chromosomes in the body cells.
GIVING BRAINLIEST AND THE REST OF MY POINTS!!!!! :D
Two parts of the food chain are described below:
Part #1: These organisms are the ending of the food chain.
Part #2: This passes energy to plants and animals.
Which statement is true about these two parts of the food chain?
A) Part 1 are consumers, Part 2 is the sun
B) Part 1 are consumers, Part 2 are producers
C) Part 1 are producers, Part 2 is the sun
D) Part 1 are producers, Part 2 are consumers
(DONT ADD ANY LINKS)
The correct statement is B) Part 1 are consumers, Part 2 are producers.
What are the two parts of food chain?Part 1 of the food chain describes organisms that are the end of the food chain, which would typically be consumers or animals that feed on other organisms, including plants and other animals.
Part 2 of the food chain refers to something that passes energy to plants and animals. This is typically the sun, which provides energy through photosynthesis to producers, or plants, that convert light energy into chemical energy stored in food. Producers form the base of the food chain, providing energy to all other organisms in the ecosystem through the food they produce.
Learn more about food chain, here:
https://brainly.com/question/18816028
#SPJ6
DNA molecules are double-stranded and RA molecules are _____ stranded
Answer:
single stranded is the answer