i need this answered asap!! What's the source of thermal energy and how energy flows throughout the layers of the earth. (Hint: think of the cause of the convection currents)
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I hope this pic will help you a lot.....
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Related Questions
The lac operon in Escherichia coli Group of answer choices promotes the expression of lactose-utilizing enzymes when lactose is absent from the environment. prevents lactose-utilizing enzymes from being expressed when lactose is absent from the environment. prevents lactose intolerance. prevents lactose-utilizing enzymes from being expressed when lactose is present in the environment.
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Answer:
The correct answer is - prevents lactose-utilizing enzymes from being expressed when lactose is absent from the environment.
Explanation:
The lac operon or the lactose operon is a operon that is essential for the many bacteria like Escherichia coli for metabolism and transport of the lactose.
In the presence of the lactose in the environment of the cell the lac genes are expressed due to the isomer of of lactose called allolactose binds to the Lac repressor protein and do not allow to bind it to lac operator. But in the absence of the lactose, the lactose utilizing enzymes are not expressed due to repressor bind to the lac operator and prevents the binding of RNA polymerase to the promoter.
Place the 4 steps of biofilm formation, listed below, in the correct order.
1. Surface (substratum) is preconditioned by environmental molecules.
2. Quorum sensing and the establishment of the extracellular matrix commences as microbes attach more stably.
3. Biofilm matures and some microorganisms escape to the planktonic state.
4. Microbes attach and detach from the preconditioned surface.
Answers
Answer:
1. Surface (substratum) is preconditioned by environment molecules.
4. Microbes attach and detach from the preconditioned surface.
2.Quorum sensing and the establishment of the extracellular matrix commences as microbes attach more stably.
3. Biofilm matures and some microorganisms escape to the plank-tonic state.
Explanation:
Biofilm is a process in which microorganism irreversibly attach and grow on the surface to produce extra cellular polymers that facilitate formation of matrix. The biofilm process takes three days for the formation after which thickness of plaque increases. There are 4 main steps in biofilm formation. Surface is preconditioned by environment molecules. The microbes attach the preconditioned surface. Establishment of extra cellular matrix and finally biofilm matures.
why is the linner wall of alimantary canal not digisteg although the digestive enzymes can digest all the materials that make cell?
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Answer:
There are no options to this question but it can be answered by giving a general explanation. The answer is:
Because the digestive enzymes are not in direct contact with the cells that make up the walls of the alimentary canal. The walls are protected by mucuous lining.
Explanation:
Digestion of our ingested food is an important process for the effective functioning of our body system. Digestion is the process whereby food, which are usually macromolecules, are broken down into simpler molecules usable by the body. After food is taken in from the mouth (ingestion), it must be broken down by chemical and mechanical means.
The chemicals means is through digestive enzymes, which are proteinous chemical substances. The digestive system consists of the alimentary canal or digestive tract, which is a tube-like organ that forms the path for food passage. Since digestive enzymes secreted during digestion can disintegrate every macro biomolecule e.g protein, carbohydrate etc, it can also break down the molecules that make up the cells of the tract wall.
However, the digestive enzymes does not break down the cells of the canal's wall because the body system secretes mucus, which lubricates the passage of food along the canal. It also prevents the digestive enzymes from coming in contact and acting on the macromolecules that make up the cells of the walls of the alimentary canal.
What is absorbed into the blood stream in small intestine and large intestine ?
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Answer:
Digested food molecules
Explanation:
1
R:
2
R:
3
R:
4
R:
5
R:
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Answer:
can you click a photo again
Scientists monitor the effects of a deadly parasite in a host. What trends will they most likely see?
A. As the parasite population increases, the host population decreases.
B. As the parasite population increases, the host population increases.
C. The host population decreases only if the parasite population decreases.
D. The host population will remain the same regardless of whether the parasite population increases or decreases.
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Answer:
a
Explanation:
Explain the statement-“viruses are the link between living and non-living”.
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Answer:
this is because they appear dead outside and alive inside beings
Does human have link with their genes(from their family)?
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Answer:
Yes genes are the features of either the mother of father
Explanation:
A mutation occurred in the following DNA sequence AGCCTAGCC and the mutated form is now AGCCTTAGCC. Which of the following correctly describes the result of this mutation?
1.A deletion occurred so all of the amino acids added after the mutation may be wrong.
2.An insertion occurred so all of the amino acids added after the mutation may be wrong.
3.A substitution occurred so all of the amino acids added after the mutation will definitely be wrong.
4.An insertion occurred so all of the amino acids added after the mutation definitely will be different.
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Answer:
Explanation:
1.A deletion mutation occurs when a wrinkle forms on the DNA template strand and subsequently causes a nucleotide to be omitted from the replicated strand.
2.This type of variant results in a shortened protein that may function improperly, be nonfunctional, or get broken down. An insertion changes the DNA sequence by adding one or more nucleotides to the gene.
3. A substitution mutation can cause the following: Change in the coding of amino acids codon to a particular stop codon resulting in an incomplete protein, which is usually non-functional. Can cause Silent mutations where a codon change can encode the same amino acid resulting in no changes in the protein synthesized.
4. when a premature nonsense or stop codon is introduced in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins.
How is genetic information preserved during the copying of DNA? View Available Hint(s) Hint 1.opened hint How is genetic information preserved during the copying of DNA? The information is preserved because DNA codes for RNA, which codes for protein. Genetic information is preserved in the linear sequence of the building blocks A, T, G, and C. Genetic information is preserved by base pairing between A and T and between G and C across the two strands of the double helix. The information in DNA is copied into RNA, which is used as a template to copy back to DNA.
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Answer:
Genetic information is preserved in the linear sequence of the building blocks A, T, G, and C.
Explanation:
Deoxyribonucleic acid contains genetic information in the bases i.e the Nitrogenous bases Adenine, thymine, Guanine, cytosine are the store for coding genetic information, in them lies the genetic information of an organism. Each base is coding for different gene the is found in the organism.
After the information on the DNA have been moved to an intermediary Ribonucleic acid (RNA) it is been translated into an amino acid a building block of protein containing all the genetic information coded for by the Nitrogenous base.
Muscle cell are richer in lysosomes , as they require lot of energy. correct and rewrite the following statement.
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Answer:
See below
Explanation:
The correct statement is:
=> Muscle cells are richer in mitochondria, as they required lots of energy.
Mitochondrion acts as power house of the cell providing the cell with the required energy.
Muscle cells are richer in Mitochondria, as they require a lot of energy.
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Especially in Skeletal muscles, Mitochondria and glycogen granules are found in abundance. Our limbs that includes our arms and legs shows movement which needs energy. The food is oxidized and energy is released.
More to know:-Mitochondria is popularly known as Power house of the cell or ATP generation site.It is a double-membranous structure with outer membrane smooth and inner membrane surrounds the matrix.The inner membrane have cristae which increase surface area.The cristae bear Oxysomes or F0-F1 particles.Mitocondria is semi-autonomous, it have it's own DNA and ribosomes.━━━━━━━━━━━━━━━━━━━━
q.no. 5 answer me please please please please please please please please please please please
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Answer:
(a)The strength of natural fibers is very less as compared to synthetic fibers. Natural fibers are heavy in weight. Natural fibers can be damaged by moths and other insects. These fibers are not wrinkle-free. These fibers are not long lasting and hence not durable.
(b) Cellulose is termed as polymer because it is made up of many monomer units.
(c) Rayon is first man- made fibre it is known as artificial silk because it have properties that are similar to silk.
(d) Rayon possesses many properties of natural fibers since it is a semi-synthetic fiber. Nylon is a synthetic fiber and has properties that are completely different from natural fibers. The key difference between rayon and nylon is their resistance to wrinkles and tears.
(e) Nylon has since become a popular choice, as it has excellent wind resistance, good elasticity, mildew resistance, and is comparatively cheaper. The material is also lightweight and dries quickly.
(f) When the piece of cotton is burnt then it burns completely and produces no odour or smell. When nylon is burnt, It completely burns and produces burning paper like odour. When nylon is burnt then the nylon is completely shrink and starts to melt first and then produces odour during the time of burning
Can someone describe these:
Menstrual Phase
Follicular Phase
and Luteal phase
Thanks!!!
Answers
Answer:
(menstrual phase) this is the phase where the unfertilized ovum and endometrium that was formed in readiness for implantation slough off or come out due to a sudden drop in progesterone levels
(follicular phase) this is where the graafian follicle in the ovary develops. from primary follicles due to secretion of follicle stimulating hormone by the pituitary gland and matures there after due LH hormone which will also stimulate the ovary to release the ovum
(luteal phase)this is the phase after the ovum has been released where the remains of the ruptured graafian follicle undergo reorganization to form a corpus luteum/yellow body which now produces progesterone which causes thickening of endometrium in readiness for implantation
hope this helps
Answer:
The menstrual cycle is the regular natural change that occurs in the female reproductive system that makes pregnancy possible. 2) The follicular phase is a phase of the estrous cycle during which follicles in the ovary nature from primary to a fully mature grafian follicle.It ends with ovulation.3) The luteal phase begins during the second half of a menstrual cycle normally lasting around 12 14 days after the ovulation and it is responsible for producing progesterone.
Fatty acids are the building blocks of(1 point)
monosaccharides
amino acids
DNA
lipids
Answers
Fatty acids are the building blocks of lipids:)
Fatty acids are the building blocks of lipids
WHAT ARE LIPIDS?
Lipids are one of the four major biological molecules in nature (the other three are proteins, carbohydrates and nucleic acids). Lipids are organic compounds that are generally characterized by their insolubility in water.MONOMERS OF LIPIDS:
Lipids, like every other biological molecule, are polymeric compounds i.e. they are made up of smaller monomeric units. The monomers that make up lipids are called FATTY ACIDS.Therefore, fatty acids are the building blocks of lipids.
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what kingdom are protists in
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Answer:
Kingdom protista
Explanation:
Two closely related beetle species are in the same location. They exhibit reproductive isolation, and they are both diploid. Biologists are arguing about whether it is more likely that they evolved via sympatric or via allopatric speciation. What statement presents the best argument
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Where do the convection currents of the magma happen?
In the crust and the atmosphere?
In the crust and core?
In the mantle and core?
In the mantle and crust?
Answers
Answer:
in the mantle and crust
Explanation:
magma is the molten rock below the crust and in the mantle
Answer:
In the mantle and crust
Explanation: becuase
which represents the optimal condition for most enzymes in the small intestine? 1. pH12 2.45°C 3. pH10 4.pH2 5.37 °C
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Answer:
5.37 °C
Explanation:
The optimal condition for most enzymes in the small intestine is 37 °C.
Enzymes are responsible for mediating several biological processes in the human body. The optimal condition for enzymes in the small intestine has an optimum pH of about 7.5 and the temperature is 37 °C, which is the normal body temperature of the human body.
Hence, the correct option is "5. 37 °C".
define environmental science
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Answer:
Environmental science is the study of living organisms and how they interact with our environment. It covers a broad range of disciplines including engineering, information studies and research of environmental issues.
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Answer:
It is interdisciplinary academic that draws on ecology, geology, meteorology, biology, chemistry, engineering and physics to study environmental problems and human impacts on the environment
Choose all the answers that apply.
Groundwater is used for:
irrigation
drinking water
fire hydrants
wells
Answers
Answer is: All of the above
Explanation:
Groundwater supplies drinking water for 51% of the total U.S. population and 99% of the rural population. ... 64% of groundwater is used for irrigation to grow crops. Most wells do not get their water from underground rivers. Hydrants are connected to our drinking water.
Answer:
irrigation drinking waterfire hydrantsExplanation:
The water is either stored in aquifers or slowly pulled downhill by gravity, where it will eventually seep into streams, lakes, and oceans. Wells can be drilled into aquifers to pump out water for irrigation, drinking, fire hydrants, and other uses. Many local and state water departments depend on groundwater for public use. In 2000, almost 20 percent of freshwater used in the United States came from groundwater.
Does genes contain sextual attractions over humans?
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Answer:
Yes, genes are based on your look likes / features for example hair, eyes, other parts of the body and people are more connected to them for the circumstances of attractions
Hope this helps :)
Explanation:
Visitors to Canada are asked to declare if
they are bringing living organisms (plants,
seeds, fruits, nuts, live animals, etc.) into
the country. Explain why it is important
to declare these organisms, even if the
visitor thinks the organism is harmless.
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_____ occurs when the response serves to counteract the stimulus.
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Negative Feedback occurs the the response serves to counteract the stimulus.
Answer:
Negative feedback is ur answer mate.
The theory of plate tectonics is supported by _______. The Eurasian and African plate are pushed away from the North and South American Plates at the _______. _______ is where rocks are carried back into the mantle of the earth. _______ iron can be magnetized by the magnetism of the earth. Subduction of the ocean floor occurs in _______. Respond to the following based on your reading. Why have rocks older than 200 million years never been found in the oceans? Explain how the movement of tectonic plates is responsible for this recycling of the ocean floor.
Answers
Answer:
1. ridges and trenches (either answer is acceptable)
2. mid-atlanitc
3. subduction zone
4. molten
5. oceanic trenches
Explain:
6. Rocks in the ocean eventually get subducted back into earths mantle due to slab pull. New rocks form at mid-ocean ridges as ridge forces two plates to diverge.
1. ridges and trenches (either answer is acceptable)
2. mid-atlanitc
3. subduction zone
4. molten
5. oceanic trenches
Explain:
6. Rocks in the ocean eventually get subducted back into earths mantle due to slab pull. New rocks form at mid-ocean ridges as ridge forces two plates to diverge.
Explanation:
what are some non examples of hydroshere
Answers
The hydrosphere is made up of all the water on the planet, including the water found below the surface and in the atmosphere. A planet's hydrosphere may be liquid, vaporous, or composed of ice. The three surface water bodies on Earth are oceans, lakes, and rivers.
What are some non examples of hydrosphere?It comprises all surface waters that are liquid or frozen, groundwater that is contained in soil or rock, and atmospheric water vapor. The hydrologic cycle continuously circulates almost all of these waters. In wells and aquifers, it can also be found underground as groundwater.
Within the hydrosphere, water circulates in a cycle. Clouds contain water that eventually falls to Earth as rain or snow.
Therefore, Rivers, lakes, and seas are where this water gathers. The cycle is then restarted by its evaporation into the atmosphere. The water cycle refers to this.
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TREE TRUNKS STRUCTURE
Sapood
Heartwood
Dead bank
Ure bark
Cambium-
Pith
Growth rings
Medullary rays
4. In tree rings, like those shown, each "ring" of growth represents what?
O A. One year of growth
O B. One season of growth
O C. One month of growth
O D. Two years of growth
What’s the answer ?
Answers
Answer:
One year of growth
Explanation:
Tree rings, like those shown, each "ring" of growth represents one year of growth.
Hope this helps, and have a good day :)
1. Define the term lichen.
2. State and explain the organisms that compose a Lichen.
3. Explain how Lichens are used to establish a community or an ecosystem.
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Answer:
Lichens are bizarre organisms and no two are alike. Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies.
Explanation:
Hope it helps
Raman’s teacher taught about changes that take place during Adolescence
period in the class today. Which of the following change take place in girls
during Adolescence period?
a) Increase in breast size b) Menstruation
c) Growth of hair in genital area d) All of the above
Answers
Answer:
d) All of the above
Explanation:
Adolescence is the period which is following the onset of puberty in a young person and turns them into an adult.
During adolescence, both males and females undergo several physical changes. Some of the physical changes in the girls' or female's body include increase in breast size, menstruation, and growth of genital hair.
Hence, the correct answer is "d".
What process separates the DNA pieces by size while making a genetic
fingerprint?
A. Digestion
B. Denaturation
C. Southern Blot
D. Electrophoresis
Answers
Answer:
answer: D. electrophoresis
A scientist is conducting research about all the plants and wildlife in the Mojave Desert as well as the desert’s resources, such as water and soil. The scientist is studying
a community.
a population.
a species.
an ecosystem.
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Answer:
an ecosystem. I got it right on edge 2020.
Explanation:
A scientist is conducting research about all the plants and wildlife in the Mojave Desert this scientist is studying an ecosystem.
What is the ecosystem?An ecosystem is a set formed by the interactions between biotic components, such as living organisms: plants, animals and microbes, and abiotic components, chemical and physical elements, such as air, water, soil and minerals.
Broad categories of terrestrial ecosystems are called biomes. In ecosystems, matter and energy are conserved.
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