what is the life cycle of a liverhook
Answer:
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Following ingestion, the young flukes migrate to the liver, through which they tunnel, causing considerable tissue damage. The infection is patent about 10-12 weeks after the metacercariae are ingested. The whole cycle takes 18-20 weeks.
Explanation:
When referring to cell division, oncogenes are most like ________ while tumor suppressor genes are most like ________. the brakes on a car; the gas pedal on a car the steering wheel on a car; the gas pedal on a car the gas pedal on a car; the brakes on a car the brakes on a car; the steering wheel on a car
Oncogenes are most like the gas pedal on a car, while tumor suppressor genes are most like the brakes on a car. Oncogenes and tumor suppressor genes are mutated in cancer cells.
Oncogenes are genes overexpressed in cells in which they should not be expressed, thereby leading to cancer.
Some examples of oncogenes are growth factors such as, for example, the Platelet-derived growth factor (PDGF) or Epidermal growth factor (EGF).
Conversely, tumor suppressor genes are genes that act to regulate cell division and replication, thereby their inactivation also leads to cancer.
A well-known example of a tumor suppressor gene is the p53 gene that acts to control cell division and apoptosis (programmed cell death).
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How can you avoid or manage
Type 1 and Type 2 diabetes
Answer:
as we all know, diabetes can only be prevented by eating very very very less sugar. Diabetes type 1 and 2 can be prevented both by eating sugar free meals
Construct the correct sequence of events for meiosis I, starting at the top.
1. Separated homologues cluster at each pole.
2. Paired homologues align at the equator, microtubules attach to kinetochores of sister chromatids.
3. Microtubules shorten, chiasmata are broken, homologous chromosomes are pulled to opposite poles.
4. Nuclear envelope re-forms around each daughter nucleus.
5. Chromosomes condense, forming of spindle apparatus begins, homologous chromosomes pair and crossing over occurs.
The sequence of events in meiosis I is first 'chromosomes condense and crossing over occurs', second 'paired homologues align at the equator', third 'chromosomes are pulled to opposite poles', fourth 'separated homologues cluster at each pole' and fifth 'nuclear envelope re-forms around each daughter nucleus'.
Meiosis is a reductional cell division by which a parent cell produces four daughter cells with half of the genetic material.
Meiosis can be divided into meiosis I and meiosis II.
During prophase I (meiosis I),
Chromosomes condenseBegins the formation of the spindle apparatus from cytoskeleton present in the cytoplasmThe homo-logous chromosomes pair and crossing over occurs. Crossing over refers to the interchange of genetic material between non-sister chromatids.During metaphase I,
The homo-logous chromosomes align at the equator plate of the cellThe microtubules attach to the kinetochores of sister chromatidsDuring anaphase I,
The microtubules shortenThe chiasmata, which link homo-logous chromosomes together until anaphase I, are brokenThe homo-logous chromosomes are pulled to opposite poles, thereby, one chromosome of each pair randomly moves to one pole of the cell and the homologous chromosome to the other.During telophase I,
The separated homologous chromosomes cluster at each pole of the new cellsThe nuclear envelope is formed around each cell nucleus.Learn more in:
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skeletal muscle exhibits alternating light and dark bands called
Skeletal muscle exhibits alternating light and dark bands called a sarcomere
Skeletal muscle is having sarcomere having myofibrils which appear dark and light in the microscope.
What is skeletal muscle?Only thin filaments containing actin are present in isotropic bands, anisotropic bands are the darker bands (A bands).
Repeating sarcomere sections, which are visible under the microscope as alternating dark and light bands, make up myofibrils.
When a muscle contracts or relaxes, long, fibrous protein filaments called sarcomeres glide past one another. Because of this, skeletal muscle is also known as striated muscle.
Therefore in appearance due to myofibrils composed of the sarcomere look light and dark bands in the skeletal muscle under a microscope.
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what would happen to you metabolically if all your mitochondria were destroyed
Answer:
You would die
Explanation:
if you lost your mitochondria you would die
The loss of functional mitochondria would result in a severe energy crisis within the cell, affecting ATP production and impairing Fatty acid metabolism and calcium homeostasis.
Mitochondria are known as the "powerhouses" of the cell because they are responsible for producing most of the cell's adenosine triphosphate (ATP).
The following processes would be affected:
1. ATP production: Without functional mitochondria, ATP production would be significantly reduced, leading to a severe energy deficit within the cell.
2. Oxidative phosphorylation: Mitochondria are crucial for oxidative phosphorylation, a process that occurs in the inner mitochondrial membrane and generates a large amount of ATP. Without intact mitochondria, oxidative phosphorylation would be disrupted, impairing ATP synthesis.
3. Metabolism of fatty acids: Mitochondria are involved in the breakdown of fatty acids through a process called beta-oxidation. If mitochondria were destroyed, the ability to efficiently metabolize fatty acids would be compromised.
4. Reactive oxygen species (ROS) regulation: If mitochondria were destroyed, the regulation of ROS levels would be impaired, potentially leading to oxidative damage and disruption of cellular processes.
5. Calcium homeostasis: Mitochondria are involved in maintaining calcium homeostasis within cells. Loss of functional mitochondria would disrupt calcium regulation, which could affect various cellular functions, including muscle contraction, enzyme activity, and cell signaling.
Therefore, the loss of functional mitochondria would result in a severe energy crisis within the cell, affecting ATP production and impairing various metabolic processes.
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help
Facilitated diffusion uses -----------------to help aid some substances across the cell membrane.
Facilitated diffusion uses transport proteins to help aid some substances across the cell membrane.
Facilitated diffusion is a passive transport process that enables the movement of specific molecules across the cell membrane with the assistance of transport proteins. While simple diffusion allows small, non-polar molecules to pass directly through the lipid bilayer of the cell membrane, facilitated diffusion comes into play when larger molecules or molecules with charges need to cross.
Transport proteins act as gateways or channels in the cell membrane. They are selective and only allow specific molecules to pass through. There are two main types of transport proteins involved in facilitated diffusion: channel proteins and carrier proteins.
Channel Proteins: These proteins form pores or channels in the cell membrane, allowing certain molecules, such as ions or water, to pass through. Channel proteins are highly specific and only allow certain substances to cross.
Carrier Proteins: These proteins undergo a change in shape to "carry" molecules across the membrane. When a specific molecule binds to the carrier protein, it triggers a change in the protein's shape that transports the molecule across the membrane. Once the molecule is released on the other side, the carrier protein returns to its original shape.
Facilitated diffusion is a crucial process for maintaining the balance of ions and molecules inside and outside the cell. It's important for the transport of nutrients, ions, and other essential molecules that may be too large or polar to diffuse directly through the lipid bilayer. The involvement of transport proteins ensures that only specific substances are transported, preventing unwanted molecules from entering or leaving the cell. Overall, facilitated diffusion is a highly regulated process that contributes to the homeostasis of the cell and the overall functioning of the organism.
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how does oxygen have a direct effect on sea urchins
Answer:
When the oxygen level is low in a Purple Sea Urchin, muscles associated with Aristotle's Lantern pump fluid through its body (through the canals). Carbon dioxide (waste/not good stuff) is released through the anus. The Purple Sea Urchin obtains oxygen through diffusion only (the diffusion of oxygen into the organism).
Explanation:
Brainliest please
Sea urchins breathe through their feet tubes because of nonavailability of lungs and gills in them. When the oxygen level is low at that time, the sea urchins pump fluids through their anus.
How are sea urchins able to survive sea ?Sea urchins are able to survive in sea because of the tiny hair called spines present on their body as water currents are created because of the hair and waste gets washed away with the water currents created.
When the carbon dioxide level gets increased in the sea at that time the skeletal structures of the marine animals are also affected.
The shells made up of calcium also gets affected because of the increasing acidity in the water. Carbon dioxide not so good is released through the anus and this totally affects the normal regulation of the creature.
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which famous composition duo was known for creating many influential operettas?
The famous composition duo that existed in history and work to create an operettas that is very famous are Gilbert and Sullivan.
Operetta can be regarded as a form of theatre as well as a genre of light opera. This concept entails spoken dialogue as well as songsGilbert and Sullivan were men that work hand in hand to create influential operettas in history. They were a famous Victorian-era theatrical that engaged in partnership of dramatist , they work hand in hand to achieve a great fit around 1830s.Therefore, Gilbert and Sullivan are great men in operetta world
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which of the following is not an abiotic factor in the prairie ecosystem a water b sunlight c grass d soil
Answer:
Grass
Explanation:
Biotic means living. There are some obvious abiotic factors here. The only gray area is what "soil" encompasses
grass-Biotic means living, all of the other choices are not living, and would therefore be abiotic factors
This is because it is a living thing (performs photosynthesis and cellular respiration).
Biotic means living, all of the other choices are not living, and would therefore be abiotic factors
A dichotomous key uses
inferences.
DNA sequences.
subjective descriptions.
observable characteristics.
Answer:
Explanation:,jkh,gf nvcbnhjm,uky7gti6drhfxcgnbhyjmu,iop'9u08[y7pt6of75rijmh
What determines how chromosomes line up during meiosis?
I NEED HELP SO BAD MY TEACHER IS STARING AT ME
Imagine that a disorder that causes the cell cycle to stop affects the muscle cells of a frog’s leg. What consequence is most likely to follow?
A.The frog will immediately not be able to use the muscle.
B. An injury to the muscle will not heal.
C. The frog will not be able to reproduce.
D. A broken bone in that leg will not mend.
D .. A BROCKEN BONE IN THAT LEG WILL NOT MEND
what is the main artery that carries blood to your lungs
Answer:
Pulmonary arteries
Explanation:
Hope this helps.
Which organelle is labeled i?
animal cell
Answer:
I believe the line is pointing to the nucleus, which is the green ball in the center of the cell
Explanation:
Why is knowledge and skills important in animal care and breeding? Explain in 3 to 5 sentences.
Answer:
to be thorough and pay attention to detail.
the ability to use your initiative.
to be flexible and open to change.
patience and the ability to remain calm in stressful situations.
the ability to work well with others.
the ability to accept criticism and work well under pressure.
To be successful as an animal breeder, you should have knowledge of the animal breeding process
a passion for animal breeding,
and knowledge of the potential risks of animal breeding.
Ultimately, a top-notch animal breeder should be an effective communicator, have good organizational skills, and be physically fit.
Which property is shared by the cells of all living things?
Answer:
cells, growth, reproduction, adaptation, homeostasis, use of energy and response to the environment
The property that is shared by the cells of all living things the cells contain DNA composed of adenine, thymine, guanine, and cytosine. The correct option is A.
What are living things?Living things are those things that are alive, The main property of a living thing can distinguish them from non-living things. These properties are growth and reproduction.
The living cells are those cells that made all the living matter. The living cell is composed of macromolecules. The cell is composed of DNA and different cell organelles.
DNA is present in every living organism. It determines the genetic difference of every organism. It is the same in every cell.
Thus, the correct option is A. The cells contain DNA composed of adenine, thymine, guanine, and cytosine.
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The question is incomplete. Your most probably complete question is given below:
A. The cells contain DNA composed of adenine, thymine, guanine, and cytosine.
B. The cells have chromosomes that are located inside a membrane-bound- nucleus.
C. The cells are surrounded by a phospholipid bilayer and a cell wall made of
cellulose.
D. The cells rely on mitochondria to carry out aerobic cellular respiration.
1. How would this method or replication reduce errors (mutations) in newly constructed DNA?
Answer:
DNA polymerase proofreading
Explanation:
Proofreading by DNA polymerase corrects errors during replication. Some errors are not corrected during replication, but are instead corrected after replication is completed; this type of repair is known as mismatch repair.
A living thing that is made of one or more cells uses energy, moves, responds to its environment, adjusts, reproduces, has a metabolism, and ingest nutrients is a (an)
Metabolism
growth
organism
respiration
a green plant which makes food using light energy water and carbon dioxide during the process of photosynthesis
Answer:
Explanation:
Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.
Answer:
Autotrophs!
Explanation:
Autotrophs are plants that have chlorophyll, which is a green pigment found in plants. These plants do all the things in your question!
which pathway allows for the breakdown of carbohydrates by splitting glucose molecules to form pyruvate?
Answer:
Catabolic pathways
Explanation:
Catabolic pathways release energy by breaking down complex molecules to simpler ones.
For example, in cellular respiration, glucose is being breaking down into CO2, H2O, and ATP.
The pathway for the breakdown of glucose to form pyruvate is called glycolysis
What is catabolism?Catabolism is the metabolic reaction in which large molecules ate broken down into smaller molecules with the release of the energy.
Examples of catabolic reactions include those that break down carbohydrates, lipids and proteins.
The pathway for the breakdown of glucose to form pyruvate is called glycolysis.
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pure water has a pH of_
a. 6
b. 7
c. 8
d. 9
Answer:
It has a pH of 7, so your answer is therefore B.) 7.
Answer:
7
Explanation:
How are male and female reproductive organs similar?
Answer: They are the same in that most of the reproductive organs of both sexes develop from similar embryonic tissue, meaning they are homologous. Both systems have gonads (male have testes and female have ovaries) that produce gametes (testes produce sperm and ovaries produce egg or ovum) and sex organs.
Vhich molecules store information related to the function of a cell in the form of a coded message!
A
nucleic acids
B
lipids
C
enzymes
D
carbohydrates
Answer: The correct answer is A. nucleic acids.
Explanation: The genetic information is stored in the form of nucleic acids i.e. deoxyribonucleic acids (DNA) or ribonucleic acids (RNA).
Nucleic acids are large macromolecules in cells and viruses. Nucleic acids store and express genetic data. Therefore, option (A) is correct.
What are nucleic acids?The biopolymers and macromolecules known as nucleic acids are fundamental to every known type of living being. Nucleotides, which are the monomers that make up nucleotides, are composed of a 5-carbon sugar, a phosphate group, and a nitrogenous base. They are the building blocks that make up nucleotides. Deoxyribonucleic acid and ribonucleic acid are the two primary subgroups that can be found among nucleic acids.
Nucleic acids, including deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), are responsible for carrying genetic information. This information is read in cells and used to produce RNA and proteins, which are necessary for the functioning of living things.
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Microorganisms often lead to infection because they-
Hi!
Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear.
2. Which structures must be present in a cell for osmosis to take place?
A. Cell (sap) vacuole and cell wall
B. Cell wall and cell membrane
C. Chloroplast and cytoplasm
D. Cytoplasm and cell membrane
D- Chloroplast and cell membrane
where does the energy used to produce atp in the light reactions of photosynthesis come from?
Answer:
I don't know it can you help me
Changes in a population over time is due to what
Answer:
Due to different circumstances.
like marriage which creates increase in population
what are the three pairs of funiculi in the spinal cord?
Answer:
In each half of the spinal cord, white matter is divided into three major bundles, called funiculi. The dorsolateral sulcus marks the division between dorsal funiculus and lateral funiculus.
Explanation:
a deposit of plaque on or within the arterial wall is known as a/an:
Answer:
Atherosclerosis
Explanation: It is a condition characterized by the formation of fatty plaques on the inner walls of the arteries
