The eruption was preceded by a two-month series of earthquakes and steam-venting episodes produced by an injection of magma at shallow depth below the mountain.
What preceded the eruption of Mount St. Helens' 2004 eruption?A wave of diminishing pressure traveled down the volcanic conduit until it reached the underground magma reservoir. The magma reservoir then started to rise, produce bubbles (degas), and erupt explosively, which drove a Plinian eruption that lasted for 9 hours. Mount St. Helens's summit crater saw a steam-blast eruption recently.
An injection of magma at a shallow depth below the mountain caused an enormous bulge and a fracture system on Mount St. Helens' north slope before the eruption, which was preceded by a series of earthquakes and steam-venting episodes that lasted for two months.
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Which of the following questions is most relevant to understanding the Calvin cycle?
(A) How does chlorophyll capture light?
(B) How is ATP used in the formation of carbohydrates?
(C) How is NADP+ reduced to NADPH?
(D) How is ATP produced in chemiosmosis?
How is ATP used in the formation of carbohydrates? is the most relevant question to understanding the Calvin cycle.
The Calvin cycle is a procedure that vegetation and algae use to show carbon dioxide from the air into sugar, the meals autotrophs want to grow. Every dwelling aspect on Earth relies upon at the Calvin cycle. Plants rely upon the Calvin cycle for strength and meals.
So to discover whether or not the calvin cycle is taking place, you need to see whether or not sugar or glucose is being synthesized or being created, so you are searching out is glucose being prete.
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sebastian wants to make ball and stick models of the four macromolecules
Answer:
Sebastian wants to make ball-and-stick models of the four macromolecules. He has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogen For a model of which macromolecule will he need mostly black and red balls? carbohydrates lipids nucleic acids proteins
Explanation:
thers not much to explain about this but i tryed my best
What happens during
facilitated diffusion?
A. Molecules are moved to an
unimportant area.
B. Molecules are destroyed.
C. Molecules are moved from a
higher concentration to a lower
concentration. This
Answer:
C. Molecules are moved from a higher concentration to a lower concentration.
Explanation:
Facilitated diffusion is a type of diffusion in which molecules move from a region of higher concentration to a region of lower concentration assisted by a carrier.
what organelle makes carbon dioxide?
Answer:
Mitochondria
Explanation:
The organelle that will use up oxygen and give off carbon dioxide and water is the mitochondria. The mitochondria is a membrane bound organelle used by eukaryotic cells to carry out cellular respiration.
PLEASE MARK AS BRAINLIEST!!!Answer: The answer to that would be mitochondria.
The mitochondria is an organelle used by eukaryotic cells to help carry out cellular respiration.
We just reviewed this in my science class but I'm not that sure if it's what you were looking for!!!
Question5
a) What is the primary way that muscle force is controlled?
b) Describe this phenomenon and explain how this relates to changes in muscle
circumference.
Question6:
Which of these two types of muscle contractions (Isotonic, Isometric) is used in the body to promote joint stability? Briefly explain your reasoning.
Answer:
Q5 a) he nervous system controls muscle force by varying both motor unit recruitment and rate coding.
b) The central nervous system can increase the strength of muscle contraction by the following: Increasing the number of active motor units (ie, spatial recruitment) Increasing the firing rate (firing frequency) at which individual motor units fire to optimize the summated tension generated (ie, temporal recruitment)
Q6) isometric contractions are active in maintaining posture and maintaining bone and joint stability.
54. The table shows the composition of the urine of four people.
Which person is most likely to be suffering from kidney failure?
person urea content of urine
high
high
low
low
A
13
10
D
water content of urine
low
high
low
high
These are the events that occur during protein synthesis. They are not in the correct order. Write numbers in the blanks indicating the order in which these steps occur.
1. DNA transcribes RNA
2. The RNA is sent to the cytoplasm in the form of mRNA
3. mRNA attaches to a ribosome
4. As the mRNA moves through the ribosomes, a tRNA molecule arrives transporting the correct amino acid
5. Newly arriving amino acids are connected to the growing polypeptide by peptide bonds
6. When a stop codon is reached, the protein is released from the ribosome.
Fireflies make their own light. The light they give off looks green. The spectrum of their light is shown. Describe how you would use a tool to see the spectrum of a firefly's light. Explain what the spectrum tells you about the light the firefly gives off. Include a comparison of the wavelengths of the light
The spectrum of the firefly can be msured by the use of a spectrometer by looking at the wavelengths of the different colors that we can see from the firefly.
What is a spectrum?We know that the term spectrum would have to do with the arrangement of wavelengths in a particular order. One of the things that we must know is that the spectrum of any object that gives out light can be measured so that the wavelength of the emitted light can be obtained.
The instrument that can be used in the measurement of the spectrum of the firefly is the spectrometer. This is a device that is specially designed in such a way that it can be able to pick up different wavelengths and analyze them.
The analysis of the light that is being given off by the firefly would enable us to be able to obtain the kind of light that we are getting from the firefly that we have studied.
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When blood flows
through the body,
oxygen diffuses into the
cells and [?] diffuses out.
A. oxygen
C. nutrients
B. carbon dioxide this
D. water
Answer: B
Explanation:
Carbon dioxide diffuses out of the cells when oxygen diffuses into the cells
What is heart wood made
of?
A. the center rings that are dark and no
longer work as they are filled with resin this is answer
B. the outer layer of rings that are
rough and have a waxy protective
coating
C. the lighter rings of a tree that are
the living tissue
Answer: A. the center rings that are dark and no longer work as they are filled with resin
Which of the following is
NOT used by plants to
attract pollinators?
A. ovary size this is answer
B. flower color
C. flower smell
D. sweet-tasting fruit
Explain how active transport works in a cell
Answer:
substances move against the concentration gradient, from an area of low concentration to an area of high concentration
Explanation:
Answer: Active transport is the movement of a substance across a cell membrane against its concentration gradient; From a low to a high concentration.
Explanation:
There are two types of active transport:
1) Primary Active Transport - Primary active transport, also called direct active transport, directly uses energy to transport molecules across a membrane. Most of the enzymes that perform this type of transport are transmembrane ATPases. A primary ATPase universal to all life is the sodium-potassium pump, which helps to maintain the cell potential. Other sources of energy for Primary active transport are redox energy and photon energy (light). An example of primary active transport using Redox energy is the mitochondrial electron transport chain that uses the reduction energy of NADH to move protons across the inner mitochondrial membrane against their concentration gradient. An example of primary active transport using light energy are the proteins involved in photosynthesis that use the energy of photons to create a proton gradient across the thylakoid membrane and also to create reduction power in the form of NADPH.
Secondary Active Transport - In secondary active transport or co-transport, energy is used to transport molecules across a membrane; however, in contrast to primary active transport, there is no direct coupling of ATP; instead, the electrochemical potential difference created by pumping ions out of the cell is used. The two main forms of this are antiport and symport.
How can Earth's layers be defined? Select the two correct answers
by their amounts of land area
by their physical properties
by their chemical compositions
by their temperatures
by their thickness
It is possible to define the layers of the earth using the information below:
in accordance with their chemistry.
based on their physical characteristics.
So, choices A and B are the ones that are appropriate for this inquiry.
What distinguishes the earth's various layers?In general, there are four major strata that make up the earth's structure. According to them,
The crust.
The mantle.
The outer core.
The inner core.
The layers indicated above all have different chemical makes up. When characterizing the many strata of the earth, factors such as the physical state and chemical makeup are equally significant. Iron and a little amount of nickel are both found to be most abundant in the core regions.
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Which is an example of geographic isolation?
Responses
A Two groups of albatross live on separate islands but commonly cross from one island to the other.Two groups of albatross live on separate islands but commonly cross from one island to the other.
B A group of snakes is unable to cross a river and is separated from a group of snakes on the opposite side.A group of snakes is unable to cross a river and is separated from a group of snakes on the opposite side.
C A species of chipmunk becomes extinct because of a lack of food.A species of chipmunk becomes extinct because of a lack of food.
D One group of frogs mates in spring and another mates in fall, effectively isolating the two groups from breeding with each other.
A group of snakes that is unable to cross a river and is separated from a group of snakes on the opposite side is an example of the geographic isolation process (Option B).
What is the geographic isolation process?The geographic isolation process refers to all types of geographic barriers such as rivers that limit the gene flow between individuals of the same species.
Therefore, with this data, we can see that the geographic isolation process is associated with a limited gene flow in a population due to geographic barriers between individuals.
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The progressive series of changes that eventually produce a climax community on what was once a bare lava flow is an example of
Answer: primary succession is the correct answer
Which is NOT a
characteristic of
saturated fats?
A. They are less healthy than
unsaturated fats.
B. They are gases at room
temperature. This
C. They are saturated with
hydrogen.
D. They are liquid at room
temperature.
Answer:
They are liquid at room
temperature.
D
Why is the second part of
photosynthesis called
"dark" reactions?
A. The reactions cause a dark
pigmentation of the plant.
B. The reactions don't require light to
be carried out. This answer
C. The reactions can't occur in the
dark.
D. The reactions can't occur in the
light.
Answer:
B. The reactions don't require light to be carried out.
Explanation:
Dark reaction is a light-independent process. This reaction occurs in the stroma of the chloroplast where it utilizes the products of the light reaction. Since this is not directly dependent on light, it is called as the dark reaction.
What is photosynthesis?
A. growing flowers from seeds
B. using light to make high-energy
carbohydrates this is answer
C. using fertile soil to grow
horticulture
D. water absorption from plants
Answer:
B.
Explanation:
Photosynthesis is basically plants using sunlight (or any light) to make 'food'.
Plants, algae, and cyanobacteria that contain chlorophyll engage in the most prevalent and important type of photosynthesis. These organisms absorb solar energy and transform it into chemical energy contained in the molecules of carbohydrates by using carbon dioxide and water. Thus, option B is correct.
What are the process involving in photosynthesis?The three episodes that occur during the photosynthesis cycle are: Light energy is absorbed by chlorophyll, which breaks down water molecules into oxygen and hydrogen. Light energy is converted into chemical energy. The reduction of carbon dioxide leads to the formation of carbohydrates.
The photosynthetic cycle contains three stages, which are as follows: Light energy is absorbed by chlorophyll, which then divides water molecules into oxygen and hydrogen. Light energy is converted into chemical energy. Carbon dioxide is reduced, which results in the creation of carbohydrates.
Therefore, using light to make high-energy carbohydrates.
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What are the steps for photosynthesis?
Photosynthesis is defined as the process by which plants use energy from sunlight in the manufacturing of food.
What are the steps of photosynthesis?The photosynthetic process in green plants occur in four distinct steps that includes the following:
Absorption of light: This is the first and important stage of photosynthesis that involves the absorption of light by the chlorophyll which is located at the chloroplast of.most green plants. This leads to the splitting of waters molecules to form oxygen.Electron transfer: As the electrons are transferred through the membrane, protons are pumped out of the membrane, resulting in the proton gradient across the membrane.Generation of Adenosine triphosphate (ATP): The movement of protons from the thylakoid lumen to the stroma leads to the generation of ATP.Carbon fixation: The ATP generated drive the process of reducing carbon into six-carbon sugar molecules.Learn more about photosynthesis here:
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What is the active site?
A. the site on an enzyme that a substrate
binds to this
B. the site on an enzyme that breaks off
C. the least important site on an enzyme
D. the site on an enzyme responsible for cell
temperature control
An active site is a site on an enzyme that a substrate binds to this. So the correct option is A.
The active site refers to the specific region of an enzyme where a substrate binds and catalysis takes place.
It is a structural element of protein that determines whether the protein is functional when undergoing a reaction from an enzyme. This structural element will be accordingly shaped to the structure of the enzyme.
A tighter fit between an active site and the substrate molecule is believed to increase the efficiency of a reaction. If the tightness between the active site of DNA polymerase and its substrate is increased, the rate of DNA replication will also increase. Most enzymes have deeply buried active sites, which can be accessed by a substrate via access channels. The active site is made up of residues that can form bonds with the substrate, particularly at the binding site.
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Answer:
a) the site on an enzyme that a substrate
binds to this
Explanation:
The active site is the site on an enzyme that a substrate binds. Hence, the option (a) is the correct answer.
Which could cause a
change to the carrying
capacity of a species in an
ecosystem?
A. seasons changing
B. continuous rotation of resources
C. more predators
D. consistent rain falls
The carrying capacity of a species in an ecosystem is the continuous rotation of resources. Option B.
As abiotic or biotic factors change so does the carrying capacity. Natural disasters can destroy ecosystem resources. When resources are destroyed, ecosystems can no longer support large populations. This reduces the payload. Increased food production through improved agricultural practices control of many diseases with modern medicine, and the use of energy to render historically uninhabitable areas.
Earth's habitable is an example of something that can expand its carrying capacity. Altering ecosystems can increase the carrying capacity of some species, as other species are overwhelmed and populated while others are dramatically reduced due to hunting. Carrying capacity is the maximum number of individuals in a population that the environment can support.
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Answer:
b) continuous rotation of resources
Explanation:
Continuous rotation of resources will cause a change to the carrying capacity of a species in an ecosystem. Therefore, the option (b) is the correct answer.
if you know the amino acid sequence of a protein can you be 100% certain of the DNA sequence of the gene that codes for it?
Answer:
No
Explanation:
As each of the amino acids have several codons that code for them (as shown in the image attached) so we can't be sure as to which of the codons is the one coding for the relevant amino acid in the sequence we're looking at
100% sequence of DNA in a gene cannot be predicted by amino acid sequence. Therefore the answer is no.
What is central dogma?The series of processes in which the sequence of DNA of genes is converted into proteins is known as central dogma. The steps involved in the process are transcription and translation.
Transcription, DNA sequence is encoded by RNA polymerase to convert into single-stranded RNA. The steps of transcription are initiation, transcription, and termination. In translation, here the single-stranded RNA codes for amino acid sequences by ribosomes. The steps of translation are the attachment of single-stranded RNA with ribosomes, translation of condones to amino acids, and termination.
The sequence of three nucleotides is known as a codon. codons code for amino acids which finally code for proteins. Start and stop codons are also present.
Therefore, the central dogma process involves the conversion of DNA sequences into proteins.
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Discuss the major groups of microorganisms that produce antibiotics.
The two groups of microorganisms are Bacteria which is also called Neomycin and Fungi i.e. Penicillin from which antibiotics could be produced.
Which microorganisms are used for making antibiotics?Most of the straightaway available antibiotics are produced by prokaryotes mainly by bacteria from the genus Streptomyces. Some antibiotics are constructed naturally by fungi. These include the cephalosporin-producing Acremonium chrysogenum. Geldanamycin make by Streptomyces. Most of the antibiotics used today are produced from microbes. Bacteria are easy to isolate, culture, keep, and improve their strain. Some antibiotic gene clusters are worldwide, while others have cameo roles. One analysis estimated that if 10,000 actinomycetes.
So we can conclude that microorganisms that produce antibiotics helpful in preventing or treating disease include bacteria and fungi.
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describe another situation in which the cell cycle short to allow rapid cell division before returning to normal
Overexpression of growth factors or the absence of suppressor proteins can lead to rapid cell division.
How the cell cycle allows cell division before returning to normal?The study of the cell cycle focuses on the apparatus that regulates the timing and frequency of DNA duplication and cell division during the mitotic (M) phase, the cell divides its duplicate DNA and cytoplasm to make two new cells. M phase involves two distinct division-linked processes such as mitosis and cytokinesis. A cell cycle is a series of events that takes place in a cell as it fattens and divides. A cell spends most of its time in what is called interphase, and through this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and concluded its division.
So we can conclude that the division cycle of most cells comprises four processes such as cell growth and DNA replication.
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Groups of cells working together form:
6. Cite a place in the world where population growth is NOT a problem today. How is it a problem?
Answer: Massively fertile coastal plain that can support plenty of people. Total agricultural land in the EU is 137 million hectares, while China's is 520 million hectares. And it is a problem because of too much population in one land using up all the resources.
Examples and non examples of nucleus
An onion cell measures 0.1 mm in length. If it is 80 mm across in a photograph taken through a microscope, what magnification was used?
Answer:
800 x
Explanation:
You multiply 80 by 10 as you set 0.1 to 1 because of the image
Theorists who emphasize the discontinuity of development maintain that growth occurs in distinct stages.
Piaget's cognitive emphasize on the discontinuity of development that growth occurs in distinct stages.
What theories emphasize discontinuous development?The discontinuity sees development as more abrupt a succession of changes that produce different types of behaviors in different age at specific life periods is called stages. Biological changes provide the potential for occurrence of these changes. Period theories which emphasize discontinuous disruption, assume that developmental change often occurs in distinct stages that are qualitatively different from each other, and in a set, universal succession. The classical theories of Freud, Erikson, Piaget, and Kohlberg are called stage theories. Theories of discontinuously emphasizes the insensibility, defense mechanisms, and effect of the id, ego, and superego. Discontinuous are clear stages of development.
So we can conclude that Another issue rotates around the continuous and discontinuous theories emphasizing how change occurs in the growth stages.
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A river with large, smooth rocks on the bottom, small and medium sized sediment is moving downstream.
Which conditions resulted in the erosion of larger rocks, like the one circled in the image? Check all that apply.
low gradient, high volume
high gradient, low velocity
high gradient, high velocity
What is Erosion ?
Erosion is the geological technique wherein earthen substances are worn away and transported with the aid of using herbal forces together with wind or water. A comparable technique, weathering, breaks down or dissolves rock, however does now no longer contain movement. Erosion is the alternative of deposition, the geological technique wherein earthen substances are deposited, or constructed up, on a landform. Most erosion is accomplished with the aid of using liquid water, wind, or ice (commonly with inside the shape of a glacier). If the wind is dusty, or water or glacial ice is muddy, erosion is taking area. The brown colour suggests that bits of rock and soil are suspended with inside the fluid (air or water) and being transported from one area to another. Physical Erosion - Physical erosion describes the technique of rocks converting their bodily houses with out converting their simple chemical composition.
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