Answer:
myofibrils
Explanation:
The skeletal muscles are involved in the movement and actions. The myofibril initiates the contraction to make the whole muscle contract. Thus, option A is correct.
What is myofibril?Myofibril is an organelle of the muscle cells that makes the muscle fibers of the skeletal muscles. The myofibril comprises myofilaments that are responsible for appearance and movement.
The myosin is the thick myofilament and actin is the thin myofilament that comprises the sarcomere that brings about the contraction by sliding over each other.
Therefore, the myofilaments (actin and myosin) of myofibril bring about the contraction of the muscles.
Learn more about myofibril here:
https://brainly.com/question/27960162
#SPJ2
Which of the following do protists NOT have?
Answer:
you didnt put the choices, give me the choices and I can tell you
Explanation:
What is different about normal cell division and cancer cell division?
Answer/Explanation:
Normal cell division is a very controlled process.
There are several checkpoints where the cell ensures the cell is:
receiving the correct signals to dividethat the environmental conditions are favourable for the cell to dividethat there is no damage to the DNA.However, cancerous cells proliferate uncontrollably. This is because they can bypass the checkpoints and divide without the necessary signals. This means cell division keeps occurring even when conditions are unfavourable and the DNA is damaged.
Please can you guys help I’ve been stuck on this for 10 mins
Answer:
Hi,
Red blood cells free in blood / not supported by other cells so cholesterol helps to maintain shape.
Hope this helps
Your presentation should include the following:
Detailed descriptions of what happens during:
photosynthesis (the light-dependent reactions and the light-independent reactions)
transitioning between photosynthesis and respiration
cellular respiration or fermentation
An explanation of how the molecules in photosynthesis and cellular respiration are similar. Please include descriptions of the molecules involved in each of the processes above.
Complete sentences should be used in all written descriptions and explanations
Illustrations, diagrams, or images that help explain the transition between the reactions of photosynthesis and cellular respiration.
You can create your own images, or use images from websites or other sources.
If you use premade images, you will need to give a reference of the source of that image and create your own unique caption to describe the image.
Your presentation should be detailed and organized, but it can be presented in a variety of ways:
illustrated story
slide presentation
comic strip
please i need this ASAP!!!!
Answer:
1. In the process of photosynthesis, plants convert the energy of sunlight into chemical energy stored in the bonds of carbohydrates.
a. The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.
b. In the Calvin cycle (light independent reactions), carbon atoms from CO2 are fixed (incorporated into organic molecules) and used to build three-carbon sugars. This process is fueled by, and dependent on, ATP and NADPH from the light reactions. Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).
2. When transitioning to respiration, photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.
3. Cellular respiration is the aerobic process by which living cells break down glucose molecules, release energy, and form molecules of ATP. Overall, this three-stage process involves glucose and oxygen reacting to form carbon dioxide and water.
a. Fermentation refers to the metabolic process by which organic molecules (normally glucose) are converted into acids, gases, or alcohol in the absence of oxygen or any electron transport chain.
4. They are similar because they both produce energy but in two different forms.
Photosynthesis- It produces oxygen and G3P, simple carbohydrate molecules that are high in energy and can be converted into glucose, sucrose, or other sugar molecules.
cellular respiration-During cellular respiration, a glucose molecule is gradually broken down into carbon dioxide and water.
Explanation:
1. A process in which the plants prepares their food from inorganic compounds and light energy is called photosynthesis.
The energy stored in the carbohydrates is used in the preparation of chemical energy.
a. In reactions that use light for the process is called light-dependent reactions. It transpires in the thylakoid organelle of the chloroplast. The light is needed for the synthesis of ATP and NADPH which is a reduced electron carrier.
b. The reactions in which the carbon dioxide is fixed from the carbon source to produce three-carbon sugars is called light-independent reactions. The process of the Calvin cycle transpires in the stroma of the chloroplast.
2. When transpiration changes to the respiratory pathway then glucose is produced during photosynthesis and is used in the process of cellular respiration to produce ATP.
The produced glucose gets converted back into carbon dioxide through the process of expiration.
The water molecules get broken into oxygen during photosynthesis and in another process of cellular respiration, the oxygen combines with hydrogen to yield water.
3. The aerobic process that requires oxygen molecules to break glucose molecules in living organisms to produce ATP and releases energy is called cellular respiration.
The process comprises a reaction between glucose and oxygen to produce carbon dioxide and water.
a. The metabolic process in which the organic molecules are converted to gases, alcohol and acids in the absence of ETC or oxygen is called fermentation.
4. The process of photosynthesis and cellular respiration have similar molecules as:
In the photosynthesis process molecules produced are oxygen, carbohydrates that are high in energy and get converted to glucose or other sugar molecules. In cellular respiration, glucose gets broken into water and carbon dioxide.
See the attached image below for the diagrammatic transition between photosynthesis and cellular respiration reactions.
To learn more about photosynthesis and cellular respiration follow the link:
https://brainly.com/question/12671790
Why was "interphase" given that name? What stage in your life would be comparable to
Interphase in a cell's life?
Answer:
"Interphase was formerly called "the resting phase,"
Explanation:
The cell in 'interphase' is not rather "resting" but preparing for later cell division.
which of the following is NOT made of proteins?
A. muscle
B. polypeptide chains
C. hydrogen
D. ligaments
Answer:
c. Hydrogen
Explanation:
Do I really need to explain...
what process produces sex cells (sperm and egg)?
Cellular Respiration
Osmosis
Meiosis
Mitosis
A factory located near the top of a hill leaks chemicals into the groundwater. How could this leakage affect the groundwater at the bottom of the hill? Could more than one place be affected? Explain.
Answer:
Explanation: ground water contamination is nearly
always the result of human activity. In
areas where population density is high and human
use of the land is intensive, ground water is especially vulnerable. Virtually any activity whereby
chemicals or wastes may be released to the environment, either intentionally or accidentally, has
the potential to pollute ground water. When
ground water becomes contaminated, it is difficult
and expensive to clean up.
To begin to address pollution prevention or remediation, we must understand how surface waters
and ground waters interrelate.
The water present underneath the Earth exterior between rocks and soil spaces is called groundwater.
The deliberate upsurge of contaminants in the water is called water pollution it modifies the natural rich environment of water microbiota and composition.
Human activities like the release of chemicals from industries and factories in water bodies result in water and soil pollution.
Chemical leakage from factories runoff adds to a water body at the bottom of hills impacting its quality.
The polluted water with chemicals will result in diseases and death of the microbiota of aquatic life and terrestrial organism consuming it.
Chemicals can also affect the soil environment by contaminating it.
To learn more about water and soil pollution follow the link:
https://brainly.com/question/1264037
Please help help ASAP
Answer:
D
Explanation:
I hope im right sorry if not!!!
Overfishing is a huge problem throughout the world. Could lab grown fish solve the problem of world hunger and overfishing at the same time? Explain. I will give brainliest
Answer:
In some ways yes it could
Explanation:
The state of the rest of the world’s fisheries is far less pretty. Widespread overfishing and shrinking global fish stocks, rising health concerns associated with toxic contamination (including mercury and plastic) of wild fish, and increasing sustainability and health concerns around aquaculture are just some of the challenges now facing the global marine industry. As prominent US marine biologist Dr. Sylvia Earle told the UN in 2015, “The ocean is large and resilient, but it is not too big to fail.”
That’s where “clean fish” come in. Without the ocean pillage or negative health impacts currently associated with captured and farmed fish, cell-grown fish can undoubtedly help ease some of the pressure on the world’s natural ecosystems. “We want to show the public we are doing this for the right reasons, and that we are working on clean fish primarily as a conservation issue” says Finless Foods’ Mike Selden. “Yes, fish is a high-value product. But I also think it is important people know we’re doing this as a conservation issue. Bluefin tuna species are on and off the threatened species list, partially because it’s so expensive. We can take the pressure off these increasingly rare and wild populations.”
How are Zebra Mussels effecting the fresh water ecosystem?
Answer:
Zebra mussels negatively impact ecosystems in many ways. They filter out algae that native species need for food and they attach to--and incapacitate--native mussels. Power plants must also spend millions of dollars removing zebra mussels from clogged water intakes.
Explanation:
just did a testtt
How does the substance in a mudflow form?
Rain mixes with soil.
Large rocks mix with water.
Soil and paper debris are combined.
Loosely connected rocks bind together.
Answer:
hi the answer is a)rain mixes with soil
have a nice day
Explanation:
Answer:
a Rain mixes with soil.
Explanation:
i took the test
Can someone help me?
Answer:
D
Explanation:
What happens to the salt and minerals in the water when the water evaporates?
Answer:
It goes back to its solid state in the glass, like when you leave out a glass of koolaid ,the water evaporates but it leaves a Orange powder residue
Explanation:
what caused mass extinction in the past? what is causing mass extinction today?
Answer:
Although the best-known cause of a mass extinction is the asteroid impact that killed off the non-avian dinosaurs, in fact, volcanic activity seems to have wreaked much more havoc on Earth's biota. Volcanic activity is implicated in at least four mass extinctions, while an asteroid is a suspect in just one.
Explanation:
Answer:
The most likely cause of the Cretaceous mass extinction was an extraterrestrial impact in the Yucatán of modern-day Mexico, a massive volcanic eruption in the Deccan Province of modern-day west-central India, or both in combination.
Explanation:
Hope this helped
1. The drug is effective when its concentration is at or above 70 mg/ml. For what length of time is the concentration at or above this level?
Which of the following describes meiosis?
A. Makes new sex cells, creates 2 daughter cells each with 23 chromosomes
B. Makes new sex cells, creates 4 daughter cells each with 23 chromosomes
C. Makes new body cells, creates 2 daughter cells each with 46 chromosomes
D. Makes new body cells, creates 4 daughter cells each with 46 chromosomes
Answer:
A should be
Explanation:
i remember all this meiosis stuff from like 8th grade
Explain how weathering, erosion, and subduction/volcanic activity help move or transfer carbon around the
geosphere or the geological carbon cycle).
dosent have to be a long answer! thank you
Answer:
Plankton use carbon to make carbonate (CO3) shells in the ocean. The shells sink and accumulate into layers of sediments and eventually rocks. Rocks are pushed deep into the earth and melt at subduction zones, dissolving the carbon. Volcanic eruptions release carbon dioxide into the atmosphere.
Explanation:
In both prokaryotes and eukaryotes, DNA replication happens
Group of answer choices
only to telomeres.
around the histones.
in the nucleus.
before cell division.
DNA replication happens before cell division in both prokaryotes and eukaryotes.
DNA replication represents a key step in the cycle of every cell, irrespective of whether they are prokaryotes or eukaryotes. The process happens during the interphase of the cell cycle - the S phase to be specific.
After DNA replication, cells generally proceed to the G2 phase where protein is synthesized before entering the mitotic phase of the cell cycle where division takes place.
More on the cell cycle can be found here: https://brainly.com/question/25282664?referrer=searchResults
In both prokaryotes and eukaryotes, DNA replication happens before cell division.
When does the cell divideIn both prokaryotes and eukaryotes, DNA replication occurs before cell division. DNA replication is the process by which a cell duplicates its DNA, creating an identical copy of the genetic material. It is a crucial step in the cell cycle to ensure that each daughter cell receives a complete set of genetic information.
In prokaryotes, which are organisms without a nucleus, DNA replication occurs in the cytoplasm. The circular DNA molecule present in prokaryotes, called the bacterial chromosome, is replicated before the cell divides through a process called binary fission.
Read mreo on cell division https://brainly.com/question/796780
#SPJ6
which two processes will be involved as this chick grows to a chicken
A cell growth due to taking nutrients
B cell division that involves meiosis
C cell division that involves mitosisb
D cell growth due to fertilization
Answer:
A and D
Explanation:
I am not sure if this is correct
Answer:
A + C
Explanation:
a p e x!
Dominic and Eva are using the same type of stopwatches to measure the time it takes for a chemical reaction to occur. They each use the same stopwatch to measure the time. These are their results: Person Trial 1 Dominic 78 seconds Eva 81 seconds Why are their results unreliable and can lead to a pseudoscientific claim? Group of answer choices They did not repeat their tests multiple times. They used the same type of stopwatch. They did not change the reactants in their chemical reactions. Only one person should have collected the data. Quiz saved at 10:43am Questions AnsweredQuestion 1 AnsweredQuestion 2 AnsweredQuestion 3 AnsweredQuestion 4 Haven't Answered YetQuestion 5 Time Elapsed: Hide Attempt due: Sep 25 at 11:59pm
Answer:
The correct answer is - They did not repeat their tests multiple times
Explanation:
If a scientific process or practice which is fundamentally based on believes or idea that has no valid evidence and not proved scientifically, such type scientific process called Pseudoscience or the false science.
In this case, Both Dominic and Eva performed experiments and recorded different time periods by the same stopwatch for the same chemical reaction.
This could result in an error in the data they get and affect the conclusion or results. To avoid this experiment must be repeated to be sure of the result and eliminate errors.
Answer:
They did not repeat their tests multiple times
Explanation:
A ferret's haploid number of chromosomes is 20. How would the number of chromosomes in the ferret's body cells compare to the number of chromosomes in its gametes? (4 points)
A. Its body cells would have 20 chromosomes, and its gametes would have 40 chromosomes.
B. Its body cells and gametes would both have 40 chromosomes.
C. Its body cells and gametes would both have 20 chromosomes.
D. Its body cells would have 40 chromosomes, and its gametes would have 20 chromosomes.
Answer:d
Explanation:d
If carbon dioxide was removed from a plant's environment, what would you expect to
happen to the plant's production of sugars?
O fewer sugars will be produced
more sugars will be produced
O carbon dioxide does not affect the production of sugars in plants
o the same number of sugars will be produced but without the carbon dioxide
Answer: Fewer sugars will be made because plants use carbon dioxide in photosynthesis.
Hope this helps
Plants are autotrophs, which prepare their food in the presence of sunlight, water, and carbon dioxide to yield sugar and oxygen.
The carbon dioxide is removed from the plant's environment, then less sugar will be produced.
Photosynthesis is a metabolic process in which plants prepare food in the presence of sunlight, carbon dioxide, and water. The products of photosynthesis are oxygen and sugar molecules.
The carbon dioxide if removed or reduced from the plant's environment, then the plants will be unable to perform photosynthesis properly, and in the limited resources, the products formed will be reduced.
Thus, the correct answer is Option A.
To know more about photosynthesis, refer to the following link:
https://brainly.com/question/1388366
multiple choice
click all that apply
Answer:
change their activity (turning on or off)changing the association with other proteinschanging the localization in the cellExplanation:
Phosphorylation is an example of a post-translational modification of a protein. These modifications are covalently attached to the protein and can have significant effects on its function.
These affects include altering its activity, its binding to other proteins, and where it is found in the cell.
However, post-translational modifications do not affect the amino acid sequence of the protein.
How many
dependent
variables do you
want in an
experiment?
Answer:
you only want 1
Explanation:
hope this helps
Answer:
You want two dependent variables in an experiment.
Explanation:
What is the sum of hydrogen + h20 =
Part 1
1. Four levels and six different groups of organisms are described in the popup Windows. What
kinds of behaviors and interactions among the organisms of this habitat can you observe in
the animated snapshot of the reef environment?
I
Answer:
Mutualism, commensalism and parasitism.
Explanation:
Interactions among the organisms such as fish, corals, lobsters, clams, seahorses, sponges, and sea turtles etc can be observe in the reef environment. reef environment refers to the coral reef which are present in the underground ecosystem. It is made up of calcium carbonate that provides habitat or shelter to thousands of animals. Some behaviours are mutualism, commensalism and some are parasitism.
The reef depicts the interaction of various organisms such as crabs, lobsters and sponges. The reef environment is made up of corals. The reef is made on the deposits of calcium carbonate hence shelter bed for thousand of organisms
Some behaviors like the mutualism, commensalism, and parasitism can be found. The mutualism is based on the mutual harmony of these organisms with each other in the same environment. The parasitism depicts the dependence of the small organisms that feed and depend on the larger organisms for shelter and food.Thus they depicts mutualism, parasitism, and commensalism in the environment.
Learn more about the 4 levels and six different groups of organisms.
brainly.com/question/20585022.
Ground tissue includes and is responsible for ALL of the following, EXCEPT one of these
A) Transport of water
B) Site of photosynthesis in the leaf
C) Metabolism, storage, support
Ground tissue is responsible for metabolism, storage, and support, but not transport of water or photosynthesis in the leaf.
Ground tissue is one of the three main types of plant tissue, and it is responsible for a wide variety of functions within the plant.
These functions include metabolism, storage of nutrients and water, and providing structural support.
However, ground tissue is not directly involved in the transport of water, which is primarily the role of the vascular tissue.
Additionally, while ground tissue cells may contribute to photosynthesis in some plant organs, such as the stem or root, they are not typically involved in this process in the leaf.
Overall, ground tissue plays a crucial role in the overall function and health of a plant, but its functions are distinct from those of other types of plant tissue.
For more such questions on metabolism, click on:
https://brainly.com/question/1490181
#SPJ11
____allows some things to enter and leave cells, while keeping other things in the cell or keep other
things out of the cell.
A:fermentation
B:A selectively permeable membrane
C:metabolism
D:osmosis
Answer:
The cell membrane is the outer layer of the cell. The primary function of the cell membrane is to regulate what substances enter and leave the cell. The cell membrane is selectively permeable, or "semi-permeable", meaning that the membrane only allows certain substances to enter or leave the cel
Answer:
b
Explanation:
because the membrane of a cell is responsible for what enters n leave the cells.
it can't be "D" because osmosis is the process by which water molecules enter a permiable or semi permiable membrane of an object from an area of high concentration to an area of low concentration.
fermentation is the process by which chemical changes occur in an organic matter do the answer is definitely not A
metabolism is the chemical processes that occur in an organism to maintain its life so the answer is not c
when you cut an onion, what happens to your eyes? what role do you think the onions' central vacuoles have in your reaction?
Answer:
They start to water because of the acid.
