Answer:
Option D, Earth’s lithosphere is thinner than its asthenosphere
Explanation:
The complete question is as follows -
Which statement correctly compares the thicknesses of Earth’s layers?
A. Earth’s mantle is thinner than its oceanic crust.
B. Earth’s outer core is thicker than its mantle.
C. Earth’s continental crust is thicker than its lithosphere.
D. Earth’s lithosphere is thinner than its asthenosphere.
Solution -
Oceanic crust and Continental crust are not the layers of earth. There are majorly three layers of earth crust – a) Core, b) Mantle and c) crust.
The core is further divided into inner core and outer core. Therefore, comparison between earth’s layers will be possible when the characteristic of three layers (physical, chemical etc.) are compared with each other. Lithosphere and asthenosphere form the part of crust and hence comparison between them can also be considered as comparison between layers of earth
Thus, option D is correct
which beat describes a tetrade
Answer:
Four chromatids are best defined as a tetrad.
Explanation:
Four chromatids are best defined as a tetrad. This consists of two homologous chromosomes during the first phase of meiosis called prophase, each composed of double chromatids.
A community of four haploid cells, including spores, made up of single mother's cell's meiotic division. A normal cell reproduces its forty six chromosomes before meiosis can commence. The initial version and the newer copy, like joint twins, stay attached together and are named sister chromatids.
Glucose is a form of sugar found in the blood Cells use glucose as a source of energy, but too much or too little can cause serious health issues So, the body uses the hormone insulin to regulate glucose n the blood Insulin helps maintain glucose levels in the blood If blood glucose lovels got very high, what would you expect to see happen to insulin levels?
Answer:
If blood glucose is high insulin is low
Explanation:
RNAi is a technique that silences genes by targeting them and degrading their mRNA. How can this technique be used in scientific laboratories?
A. RNAi has been used in laboratories to make bacteria more susceptible to antibiotics, but has limited application in eukaryotic cells.
B. RNAi is a powerful tool for degrading mRNA, but because it doesn't degrade other types of RNA, its use is limited.
C. RNAi is observed in nature, but it can't be used in laboratories.
D. RNAi allows scientists to turn off one gene specifically to study its effect
The enzyme DNA polymerase works only in the 5′ to 3′ direction. How does this affect the leading strand and the lagging strand?
The enzyme DNA polymerase works only in the 5′ to 3′ direction. How does this affect the leading strand and the lagging strand?
A. DNA polymerase can work on both the leading and the lagging strand but is much faster on the leading strand.
B. DNA polymerase can use only the leading strand as a template. A different enzyme is used to synthesize DNA on the lagging strand.
C. DNA polymerase can work continuously on the leading strand but works discontinuously on the lagging strand, creating Okazaki fragments.
D. DNA polymerase can work continuously on the leading strand but must flip the lagging strand around before it can work on it.
Refer to the family pedigree shown here. In generation I, one parent is affected by the gene mutation and one parent isn't. In generation II, all three children are affected by the gene mutation. What can you conclude about this gene mutation?
A. All children born in future generations will be affected by this disorder.
B. This gene mutation is a dominant disorder.
C. The generation I mother is a carrier of this gene mutation.
D. This gene mutation is a recessive disorder.
Answer:For 1
Option: D
RNA interference process inhibits expression of gene by degrading mRNA. It is a post transcriptional process occur in eukaryotes. RNA is broken into small pieces( siRNA) , these small RNA activates the ribonuclease. Ribonuclease digests the mRNA which codes for certain protein thus halting translation.
Researchers use this mechanism to learn function of gene. This technique is now used to check gene causing certain disease. Artificial mRNA are also available which can be introduced directly in laboratories.
Explanation:
By destroying mRNA, the RNA interference mechanism prevents the expression of genes, hence question 1- d, for 2- c, and 3- b is the correct options.
What is RNA interference?Eukaryotes undergo this post-transcriptional process, small RNA fragments (siRNA) that have been cut apart from RNA activate the ribonuclease.
Translation is stopped by ribonuclease's digestion of the mRNA that codes for a particular protein.
This technique is used by researchers to understand how genes operate, this method is being employed to identify genes responsible for certain diseases.
Therefore, there are also synthetic mRNA options that may be used right away in lab settings, hence for question 1, d is the correct answer.
Learn more about RNAi, here:
https://brainly.com/question/13018093
#SPJ3
Which best explains how green plants absorb energy from the Sun?
Convert 9.75 millimeters to centimeters.
centimeters
Answer:
.975
Explanation:
1 millimeter is equal to .1 cm
so divide 9.75 by 10
Why do areas north of the Arctic Circle in the Northeren Hemisphere experience a polar day lasting for several months during the summer
Final answer:
The polar day in the Arctic Circle is due to the tilt of the Earth's axis, causing extended daylight during summer months. Despite sunlight being present 24 hours, temperatures seldom rise above freezing because the sun’s rays hit at a low angle.
Explanation:
Areas north of the Arctic Circle in the Northern Hemisphere experience a phenomenon known as the polar day, which lasts for several months during the summer. The Earth's axis is tilted, meaning that during its orbit, the northern part of the planet is skewed towards the Sun. At the peak of this tilt during the summer solstice, around June 21, regions within the Arctic Circle are exposed to sunlight for 24 hours a day, resulting in continuous daylight.
Despite the constant sunlight, the temperature often does not rise above the freezing point of water. This is because the sunlight arrives at a low angle, skimming across the horizon. The energy is spread over a larger area and must travel through more of the Earth's atmosphere, which scatters and absorbs some of the sun’s warmth, resulting in only moderate temperature increases.
The situation reverses around December 21, the winter solstice, leading to the polar night in the Arctic Circle, where there is no sunlight for 24 hours. Conversely, the Antarctic Circle experiences their midnight sun. This cycle is due to the same axial tilt that causes the polar day. Equinoxes occur when the line of direct sunlight hits the equator, making day and night of equal length, typically around March 20 or 21 and September 22 or 23.
DNA consists of all of the following except.
A. Deoxyribose
B. Phosphate
C. Ribose
D. Nitrogen Bases
Answer: The answer is B
Answer:
b
Explanation:
my guess is phosphate because there isnt phosphate in dna but there is phosphate group and i know that the other choices are in dna
Select the correct answer.
A man has blood type AB and his wife has blood type B. What are the possible blood types for their child?
A. blood types A and B
B. blood type AB
c. blood types A, B, and AB
Which one is it
A lone male wolf, who doesn't have a pack, travels the forest. When he reaches a new hill that he hasn't been on before, he spends a large amount of time sniffing the trees and rock outcrops. Finally, he turns and heads back from where he came, recognizing this is the territory of another wolf. What's most likely responsible for communicating this information to the wolf?
A. The tracks of other wolves on the hill
B. Pheromones
C. Markings on the trees
D. Language
Answer:
The correct answer is option B. pheromones.
Explanation:
Pheromones are chemical substances that are released and produced by a different type of animals, into the environment, for marking their territory or affecting behaving of its species.
Wolves communicate by the chemical messages using their sense of smell. Such chemical messages are called pheromones, between different members of the same species.
Thus, the correct answer is option B. pheromones.
What is a chromosome
Answer:
the correct answer is d my good man
Explanation:
Answer:
D. A strand of DNA
Explanation:
A farmer chooses to breed the cows that produce the most milk rather than the cows that produce less milk. This is an example of
A. uniformitarianism and biogeography.
B. artificial selection.
C. natural selection.
D. homologous and analogous structures
The answer is B. artificial selection. Artificial selection is . a process in the breeding of animals and in the cultivation of plants by which the breeder chooses to perpetuate only forms that have certain desirable inheritable characteristics (such as, in this case, cows that produce the most milk).
What is the difference between an igneous, sedimentary and metamorphic rock
The main difference between igneous, sedimentary, and metamorphic rocks lies in how they are formed. Igneous rocks form from molten magma or lava, sedimentary rocks form from accumulated sediment, and metamorphic rocks form from existing rocks that are subjected to heat and pressure.
Explanation:Igneous rocks are formed when molten magma or lava cools and solidifies. They can be found both above and below the Earth's surface. Examples include granite and basalt.
Sedimentary rocks are formed by the accumulation of sediment that has been weathered and eroded from pre-existing rocks. They are often layered and can contain fossils. Examples include sandstone, shale, and limestone.
Metamorphic rocks are formed when existing rocks undergo heat and pressure deep within the Earth's crust. This causes their minerals and textures to change. Examples include marble and slate.
Learn more about Difference between igneous, sedimentary, and metamorphic rocks here:https://brainly.com/question/29056689
#SPJ11
Cells produced at the end of telophase II have ____ as many _____ chromosomes as cells that started the process.
Answer:
The first blank is half
The second blank is single-stranded
Explanation:
Cells produced at the end of telophase II have half as many single-stranded chromosomes as cells that started the process../
In what way are cities microclimates?
Hello There!
An "Urban Microclimate" is the climate of a smaller area in an urban envioment, which may be different to that of another section of the same urban environment.
Cities are microclimates because cities are warmer than the areas around them.
Answer: Micro-climate refers to the small scale climatic condition prevailing in a small area.
Micro-climate in cities differs from place to place depending upon the amount of solar radiations absorbed in that area, amount of precipitation, moisture content, overall surrounding temperature and air pressure.
Most of the cities micro-climates are generally warmer because of its high absorption of solar radiation, lack of spaces between the houses and building and high emission of gases, creating pollution.
Known as zygote fungi, produce spores in zygosporangia, and an example is black mold:
Answer:
Zygomycota
Explanation:
Zygomycota is also known as zygote fungi. This fungi produces spores in zygosporangia and a well known example is the black mold.
Question 1 of 10
2 Points
While online last week, you saw the following advertisement:
Shop at Impressive lonics!
The ions in our jewelry will balance your energy
and improve your health Nine out of ten people
report significant improvement in the way they
feel within one week of wearing our jewelry
SALE ENDS SATURDAY!
Which of the following is the best thing to do after reading this
advertisement?
O
A. Send your friends a link to the page so they can buy the jewelry
too.
B. Read the company website to find out more about how the ions
work
O
O
C. Buy the jewelry before the sale ends.
O
D. Look for scientific research about whether these claims are
PREVIOUS
Answer:
D. Look for scientific research about whether these claims are correct or not.
Explanation:
Being a Scientific question, the question should be based more on your ability to find out if the jewelry is made of real material (or the material they claim they used). This can be found by finding their sources of material, and checking professional reviews.
~
The best thing that you do after reading this advertisement is, that look for scientific research about whether these claims are true or not.
What do you mean by Health?Health may be defined as a state of total physical, mental, and social well-being and not simply the absence of disease or infirmity.
After reading an advertisement, strictly do the scientific research and analyze the actual cause of balancing the energy.
It is also to realize that the jewelry is made up of what real materials that impact your health.
After finding all such requirements, it's time to analyze the reviews, comments, and effectiveness with the same procedure.
Therefore, the best thing that you do after reading this advertisement is, that look for scientific research about whether these claims are true or not.
To learn more about Scientific research, refer to the link:
https://brainly.com/question/17216882
#SPJ2
when is your breathing likely to slow down?
a- when your heart cella’s need more carbon dioxide
b- when your heart rate slows down
c- when your blood cells have too much oxygen
d- when your heart rate speeds up
Answer:
b- when your heart rate slows down
Explanation:
Breathing is likely to slow down when the heart rate slows down because this corresponds with a reduced demand for oxygen, and there's less need to expel carbon dioxide, helping maintain the appropriate blood pH. Hence, the correct option is b.
Your breathing is likely to slow down when your heart rate slows down. This happens because of the connection between the heart rate and the body's demand for oxygen. When the body is at rest, and the heart rate is lower, there is a decreased need for oxygen, and the body's cells may also be producing less carbon dioxide. As a result, the brain's respiratory centers will adjust breathing rates to maintain appropriate levels of these gases in the blood, slowing down the breathing rate to prevent excessive elimination of carbon dioxide, which could upset the blood's pH balance.
The respiratory system is closely monitored by cells in the brain that detect the level of carbon dioxide in the blood, primarily influencing the breathing rate. Faster breathing will lower blood carbon dioxide levels (and incidentally raise blood oxygen levels and pH), while slower breathing will have the opposite effect. Therefore, to maintain proper blood pH, the rate of breathing must be regulated. This regulatory mechanism is especially important because unbalanced blood pH can lead to respiratory or metabolic acidosis or alkalosis, conditions that are detrimental to cellular function and overall physiology.
Which of these is true for bacteria because they are prokaryotic cells?
A. They can engulf body cells in order to make memory cells.
B. They must invade viruses in order to reproduce.
C. They are much larger than eukaryotic body cells.
D. They can reproduce on their own outside of other cells.
Answer:
B
Explanation:
Answer:
D.They can reproduce on their own outside of other cells
Explanation:
just took the test
Please help!!!!!!! (Question in photo) I’m desperate!!!
Answer:1st one
Explanation:
Define selective pressure
Answer:
Selective pressure is any phenomena which alters the behavior and fitness of living organisms within a given environment. It is the driving force of evolution and natural selection, and it can be divided into two types of pressure: biotic or abiotic.
Explanation:
A selective pressure is any reason for an organism with a certain phenotype to either have a benefit of survival, or a disadvantage.
The cell membrane controls what enters and leaves the cell. Which of the
structures in the diagram below is the cell membrane?
— F
оооо
Answer:
c
Explanation:
The cell membrane controls what enters and leaves the cell. The structure C is the correct presentation of the cell membrane.
What is a cell membrane?The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's inside from the outside world. The cell membrane is made up of a semipermeable lipid bilayer.
The cell membrane controls the flow of materials into and out of the cell.The cell membrane serves two purposes: first, like a barrier that keeps cell constituents in and undesired things out, and second, as a gate that allows needed nutrients to enter the cell and waste products to exit.
Learn more about cell membranes here:
https://brainly.com/question/9260716
#SPJ2
Which statement describes Mendel’s hypotheses regarding gametes?
A gamete carries two genes for a trait.
A gamete carries one allele for a gene.
A gamete can carry multiple alleles for a trait.
Some gametes are dominant and some are recessive.
Answer:
B - A gamete carries one allele for a gene'.
Explanation:
edge2020
Option B. A gamete carries one allele for a gene.
What is Mendel’s hypotheses regarding gametes?
Mendel stated that heritable factors are segregated during gamete formation.
In other words, this law states that a pair of alleles is separated, or segregated, during the formation of gametes.
Thus, the statement that describes Mendel’s hypotheses regarding gametes is a gamete carries one allele for a gene.
Learn more about gametes here: https://brainly.com/question/25796791
#SPJ9
Susan is planting her garden and choosing plants at the local plant nursery. She tells the clerk that she wants to plant perennials in her front garden bed. How often is Susan expecting the plants that she chooses to germinate and flower?
A. Sprout this year and need to be replanted
B. Sprout every year for two years
C. Sprout every year, year after year
D. Grow into larger, permanent trees and shrubs
Answer:
C) Sprout every year, year after year
Explanation:
A perennial plant or simply perennial is a plant that lives more than two years. Some sources cite perennial plants being plants that live more than three years. The term is often used to differentiate a plant from shorter-lived annuals and biennials.
Answer:
The correct answer will be option C (Sprout every year, year after year).
Explanation:
Perennials are the herbaceous plants which live for many years or seasons. These plants die in falling season and then again come back in spring from the roots which were dormant during the winter season.
They have longer life-span and sprout every year like Hibiscus, Lavender, Lilies and Rose Bushes.
Thus, option C (Sprout every year, year after year) is the correct answer.
when can exponential growth happen?
A: when there are limited resources
B: When carrying capacity is reached
C: When there is no competition
D: When the death rate is high
The correct answer is option (C) When there is no competition
What do you mean by exponential growth?
Exponential growth is a data pattern that shows larger increases over time. In finance, compounding creates exponential returns. Compound interest savings accounts can show exponential growth.Learn more about exponential growth below
http://brainly.com/question/904448
#SPJ2
Mendel crossed tall pea plants with short pea plants. The offspring were all tall plants.
Answer:
First one is: Short and the second one is: tall.
Explanation:
Got this right. :D
Hope this helps! :)
Following photosynthesis, _____ is moved to the roots for storage through the phloem.
Answer:
Sugar
Explanation:
The correct answer is sugar. Following photosynthesis, sugar is stored in the roots through the phloem which is composed of living cells that are in charge of transporting a water solution of sugars.
I hope it helped!
Answer:
The correct answer is sugar.
Explanation:
Plants are the only organisms that can make their own food. This is called photosynthesis. With this process, plants capture the energy of sunlight and transform it into chemical energy, to produce organic matter through inorganic matter.
Photosynthesis is carried out in the green leaves and stems of the plant, in special structures of plant cells: Chloroplasts. These organelles contain chlorophyll, which is used efficiently to start photosynthesis. For photosynthesis to be carried out, the availability of light and the presence of chlorophyll are necessary. The process occurs while the plant receives light. The are two types of phases in this process: The light and dark phase.
The light phase receives this name because all the reactions that occur during it depend on the presence of the light. This is captured by chlorophyll allowing photolysis to be performed, a reaction in which water unfolds into hydrogen and oxygen. As a result of this reaction, oxygen is released into the environment and hydeogen is used in other reactions that occur within the same process.
The dark phase receives this name because the reactions that occur in it do not depend on the light, but this does not mean that it occurs at night. This phase requieres compounds formed during the light phase, in addition to the carbon dioxide that is taken from the environment. The latter is combined with the hydrogen released in photolysis and other compounds to form glucose, a simple carbohydrate.
Why does meiosis produce cells with half the chromosomes?
O
A. Most of the chromosomes are not necessary to keep an organism
alive.
B. A gamete needs only half the number of chromosomes because
two gametes join together.
O
C. It makes the gametes easier to move around in the organism.
O
D. It is faster to produce gametes with fewer chromosomes.
The meiosis produces cells with half the chromosomes A gamete needs only half the number of chromosomes because two gametes join together.
Structure of DNA. Most DNA is found inside the nucleus of a cell, where it forms the chromosomes. Chromosomes have proteins called histones that bind to DNA. DNA has two strands that twist into the shape of a spiral ladder called a helix. DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The nucleotides attach to each other (A with T, and G with C) to form chemical bonds called base pairs, which connect the two DNA strands. Genes are short pieces of DNA that carry specific genetic information.
Learn more about chromosomes
https://brainly.com/question/16985098
#SPJ2
Which of these organisms have the greatest amount of cell specialized
The answer would be B. Cats.
Cats are the most advanced organisms between the options thus have the greatest amount of cell specialization.
A hope spot is a
A protected marine environment
B type of publicity for a TED prize
C term invented by Jacques Cousteau
D place where drilling for oil is likely to pay off
A hope spot is a protected marine environment that is protected to maintain the ocean living.
What is the hop spot?
A hope spot is a place of an ocean that desires unique safety due to its natural world and full-size underwater habitats.
The institution of islands, taking into consideration extraordinarily wealthy in marine biodiversity, are the primary locations in India to were delivered withinside the listing of fifty global 'hope spots.
Read more about the hope spot:
https://brainly.com/question/11352260
#SPJ1
Which of the following is the earliest era of Earth's geologic time scale? Cenozoic
Mesozoic
Precambrian
Paleozoic
Answer: Paleozoic
Explanation:
Paleozoic is the earliest era