If it was alive at one time it will always be considered a biotic factor
T OR F
Answer:
True I think
Explanation:
How many variations do you observe?
Answer:
Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation). Variation may be shown in physical appearance, metabolism, fertility, mode of reproduction, behaviour, learning and mental ability, and other obvious or measurable characters.
chromosomes or by differences in the genes carried by the chromosomes. Eye colour, body form, and disease resistance are genotypic variations. Individuals with multiple sets of chromosomes are called polyploid; many common plants have two or more times the normal number of chromosomes, and new species may arise by this type of variation. A variation cannot be identified as genotypic by observation of the organism; breeding experiments must be performed under controlled environmental conditions to determine whether or not the alteration is inheritable.
Genotypic variations are caused by differences in number or structure of Environmentally caused variations may result from one factor or the combined effects of several factors, such as climate, food supply, and actions of other organisms. Phenotypic variations also include stages in an organism’s life cycle and seasonal variations in an individual. These variations do not involve any hereditary alteration and in general are not transmitted to future generations; consequently, they are not significant in the process of evolution.
Explanation:
Brainliest please?
sub-saharan africans show the largest genetic diversity of any human population. this is likely to have resulted from a. a small breeding population, maintaining genetic diversity. b. the accumulation of genetic mutations over long periods of time. c. the introduction of genetic diversity from europe and asia. d. the accumulation of genetic mutations over the last 10 years.
accumulations of genetic mutations over time.
Genetic and epigenetic changes compound over time to cause cancer. While aging and chronic inflammation are the major causes of epigenetic changes, carcinogenic substances, UV radiation, and other conditions can also cause genetic changes. Our prior exposure levels and life history are reflected in the accumulation and patterns of changes in normal cells. The majority of accumulated changes are regarded as passengers, although they are linked to cancer drivers as they accumulate. Although only hypothesized for genetic changes, this has been demonstrated for aberrant DNA methylation. However, modern technology has made it possible to assess uncommon point mutations, and research has revealed that the rates of their accumulation do actually correspond with cancer risk.
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all you need is in the photo
Answer:
An example of abiotic factor include temperature, light and water. A seasonal
variation temp and precipitation will have a great impact on the population in the ecosystem
Muscular endurance is the amount of force that can be exerted by a single contraction of the muscle. True or false?.
False: The amount of force that can be exerted by a single muscle contraction determines muscular endurance.
What is the muscular endurance?The capacity of a muscle or group of muscles to sustain repeated contractions against a force over an extended period of time is known as muscular endurance. The more repetitions you could perform, the stronger your muscle endurance was.
Why is muscle endurance important?There are numerous reasons why muscular strength and endurance are crucial: increase the endurance with which you can carry out tasks like opening doors, lifting boxes, or chopping wood. lessen the chance of damage. assist you in maintaining a healthy weight.
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Where do chylomicrons go after leaving the epithelial cells of the small intestine
Answer:
Later they are used as our energy sources and git stored in our muscles.
Explanation:
The chylomicrons are transported to the circulatory system. Once in the circulation, they can either go to the liver or be stored in fat cells that comprise adipose tissue found throughout the body.
Hope it helps!
a transcutaneous pacemaker is most likely an intervention for which dysrhythmia? a. second-degree atrioventricular block, type i b. second-degree atrioventricular block, type ii c. wolff-parkinson-white syndrome d. wandering atrial pacemaker
A transcutaneous pacemaker is most likely an intervention for second-degree atrioventricular block, type ii dysrhythmia.
What is transcutaneous pacemaker?
A temporary method of pacing a patient's heart during a medical emergency is transcutaneous pacing (TCP), often known as external pacing. While some contemporary defibrillators can perform both tasks, transcutaneous pacing and defibrillation use pads and an electrical stimulus to the heart respectively. Defibrillation is used in more serious instances, such as ventricular fibrillation and other shockable rhythms. Electric current pulses are delivered through the patient's chest during transcutaneous pacing to stimulate the heart's contraction.
An unusually slow heart rate is the most typical transcutaneous pacing indication. By definition, bradycardia is a heart rate in an adult patient that is less than 60 beats per minute.
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Building a movie theater
What are the 4 benefits and costs of building a movie theater?
(In biology)
Answer:
Experience Instead Of A Possession. So many people realize that they don't want their homes or their lives filled with possessions.
Birthday Or Anniversary Event.
High-Quality Picture.
Only The Best Acting
Help meh
In which state is a plant cell healthiest?
Submerged in a hypertonic solution, causing the cell to shrink
Submerged in a hypertonic solution, causing turgor pressure
Submerged in a hypotonic solution, causing turgor pressure
Answer:
Submerged in a HYPOTONIC solution causing turgor pressure.
Explanation:
HYPERtonic causes water to leave the cell. This harms the plant!
Hypotonic does the opposite.
Turgor pressure is important to keep the plant from wilting. Turgor keeps the water in plants.
Hope this is correct. Wishing you the best.
A graph of atmospheric carbon dioxide concentration over time is shown. Scientists are investigating the cause of the large increase in atmospheric carbon dioxide concentration since about 1800. Which of the following provides the best explanation for the increase of carbon in our atmosphere?
A. Frequent eruptions of large volcanoes.
B. Naturally occurring fluctuations of in the carbon cycle.
C. Utilization of fossil fuels by humans for industrialization.
D. An increase in the sea level due to melting of ice.
Answer:
C. Utilization of fossil fuels by humans for industrialization.
Explanation:
Frequent eruptions of large volcanoes were happening long before humans and will happen after humans too. They are not the reason why we are seeing so much CO2 in the last 200 years.
There are some naturally occurring fluctuations of carbon but not to the degree that we are seeing.
Melting of ice and sea levels rising is due to the global warming problem caused by our dependency on fossil fuels.
Which molecule synthesized by plants is a major source of energy for cellular processesin both plants and animals?
Answer:
The sun is the ultimate source of life for all living beings. In photosynthesis, plants transform light energy to chemical energy. Animals are receiving nutrition from eating vegetables. The only source of energy that a cell can use is a molecule called adenosine triphosphate .
what purpose of pond and indicater
Answer:
Healthy Ponds Are Indicators of Healthy Environments A pond can tell you if an environment is healthy based on the wildlife that visits, such as dragonflies and amphibians. Since the vast majority of life on earth relies on water for survival, it should be no surprise that most aquatic systems draw in a large variety of species.
Explanation:
Acellus - what is a gene?
A. a single chromosome that is not replicated.
B. a double stranded chain of base pairs that lives in the nucleus.
C. factors that are passed from parents to offspring.
D. the beginning sequence of a DNA that tells a ribosome where to attach and transcribe.
A gene are factors that are passed from parents to children.
C. factors that are passed from parents to children.What is a gene?The gene is a segment of a DNA molecule (deoxyribonucleic acid), responsible for genetically inherited characteristics. Each gene is made up of a specific sequence of DNA that contains code (instructions) to produce a protein that performs a specific function in the body.
With this information, we can conclude that Genes are considered the unit of heredity, as they contain the information - which is transferred from parents to children - necessary to guide the production of RNA molecules (ribonucleic acid) and proteins, which are decisive in the formation of the entire organism.
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the somatic nervous system controls voluntary actions and the autonomic nervous system oversees involuntary actions.
The given statement is true that the somatic nervous system controls voluntary actions while the autonomic nervous system oversees involuntary actions.
The somatic nervous system is a part of the peripheral nervous system(PNS) that is involved in the voluntary control of skeletal muscle movement. It is in charge of all the bodily processes that we are cognizant of and have control over, including how our arms, legs, and other body parts move.
The peripheral nervous system's autonomic nervous system controls physiological functions that are carried out automatically, such as digestion, blood pressure, respiration, and sexual desire.
There are three physically separate divisions in it:
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all the following are components of the cell theory except:
All living thing are composed of cells
Living organisms can arise from non living matter
cells are the basic units of structure and function in living things
new cells are produced from exsisting cells
The shape of a blackbody curve depends on what single property of the blackbody?.
The shape of a blackbody curve depends on the single property of the temperature of the blackbody. It is the only single property of the blackbody that affects the shape of a blackbody curve.
Temperature completely determines the shape of a blackbody curve as it shows a wide variety of results by their amount in the increased or decreased state.
Blackbody Curve is the curve that represents the intensity of spread of the radiation that is emitted by any type of object. The curve drawn sometimes refers to a mathematical type of idealization which is known as a blackbody as it is an object that is capable of absorbing all kinds of radiation falling upon it.
Each curve will show an intensity of radiation that exists over a wide range of wavelengths as it is emitted at a particular temperature by the blackbody.
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What was Mendel's law of segregation?
Explanation:
The Law of Equal Segregation states that during gamete formation, the two alleles at a gene locus segregate from each other; each gamete has an equal probability of containing either allele.
A mutation in the code for a trait may not always change the expression of that trait. What advantage does this provide cells?
Answer:
D:Some changes in the DNA sequence will not cause a change in the protein produced.
Explanation:
I did the test
Answer: D
Explanation:
I’m taking the test!
Identify the three reactants for photosynthesis (HELP)
Answer:
the three reactants are carbon dioxide, water and sunlight.
there's not rly any explanation needed.
what is active transport?
A. an organisms way of getting materials to its community
B. a cells way of transporting materials that uses energy
C. the nucleus’s way of transporting genetic information
D. when peroxisomes moving materials in a cell
Active transport is a cells way of transporting materials that uses energy.
What is active transport?Active transport is a type of passage through the membrane in which energy is expended for transport to occur. There is a movement of molecules from a region where there is a lower concentration of this molecule to where there is a higher concentration, which is against the concentration gradient.
When overcoming a force, it will need energy to be able to generate this transport, so the transport proteins will need ATP to generate this movement of molecules.
One of the best known molecules that performs this type of transport, and one of the most important in the cell to maintain ion homeostasis inside and outside the cell, is the sodium-potassium ATPase pump, which pumps sodium ions out of the cell and pumps potassium ions into the cell.
Therefore, we can confirm that active transport is a cells way of transporting materials that uses energy.
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Which sphere of the Earth system includes snowfields, ice caps, and frozen ground?
Please Help Make Sure you explain your answer i will be marking brainliest to the first person who is correct:)
SCIENCE....,,,,
Answer:
D
Explanation:
Lower pressure= higher up in the water
anything that goes up to the twilight zone or ocean surface loses pressure. Deep ocean to trench is the only one that descends.
glucose enters the epithelial cells of the small intestine against its concentration gradient. select the best explanation from the statements.
The best statement which explains is 'Glucose is co-transported with Na+, which moves down its concentration gradient into the cell'.
It is because the sodium/potassium pump is located in the plasma membrane of the cells.
To transfer the glucose material across the membrane, the Na+/K+ pump utilizes three molecules of ATP to shift potassium ions inside the cell and derives sodium ions outside the cell.
As a result of this, Na ions' concentration increases outside the plasma membrane while the concentration of potassium is higher inside the membrane.
This process is also known as secondary active transport because it drives energy from the primary active transport process.
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What role do white blood cells perform in a human body?
protect against pathogens
conducting electrical impulses
secreting enzymes
carrying oxygen
White blood cells are the ones that protect the body against pathogens. The correct option is A.
What are white blood cells?White blood cells are components of the immune system. They aid the body's defense against infection and other diseases.
There are generally the following types of white blood cells:
Granulocytes (neutrophils, eosinophils, and basophils).MonocytesLymphocytes.Thus, the correct option is A.
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A few bacteria are placed in a nutrient solution. After several hours, thousands of bacteria are present. Which life activities are primarily responsible for this? (1) digestion and movement (2) digestion and reproduction (3) circulation and respiration (4) excretion and coordination
Answer:
2
Explanation:
you are on a committee that is planning whether or not to build a tidal power plant near a diverse and healthy coastal habitat. describe at least two
The answer to the following question is-
Pros-
- Renewable.
- doesn't need fuel.
- Emission-free
- A trustworthy plant can endure 100 years.
- High performance
- reliable results
- can perhaps act as a storm surge barrier.
- Local rather than global environmental effects
Cons
- costly to construct
- extremely specific to place (only 20 sites identified with high potential)
- Requires non-continuous, grid-backup, or storage
- Barricades might prevent access to open water
- can alter the tidal level in the vicinity.
- Fish, marine mammals, and birds are affected
- upends normal tidal cycles
- reduces the salinity of tidal basins
- collects trash, waste, and pollution close to the coast
- decreases ocean kinetic energy
What is tidal power plant?Tidal power or tidal energy is converted into usable types of power, primarily electricity, using a variety of techniques.
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Which one of the following factors does NOT affect Earth’s climate?
A. Ocean Currents
B. Energy from the Sun
C. Elevation
D. Soil Composition
Answer:
D
Explanation:
its just not any other one
Our soil cleans our water, feeds our trees and crops with vital nutrients, and controls numerous significant greenhouse gases in addition to helping to maintain the Earth's temperature. Thus option D is correct.
What is the soil impact on Earth climate?On a smaller scale, soil can also affect climate. More so than drier, looser soils, wetter or denser soils hold heat and stabilize the environment from temperature variations.
In deserts, the temperature can rise by more than 60 °F in a single day. The largest repository for terrestrial carbon is healthy soil. In the carbon cycle, soils are essential because they absorb carbon from decaying plant tissue.
By storing carbon (carbon sequestration) and reducing greenhouse gas emissions in the atmosphere, soils can be effectively managed to mitigate climate change.
Therefore, soil composition factors does NOT alter Earth’s climate.
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A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a television. What does this
communication between the remote control and the television illustrate about electromagnetic radiation?
A It possesses energy inversely proportional to its frequency
B
It is a longitudinal wave.
С
It transfers energy without transferring mass,
D
It diffracts and accelerates in air
Answer:
Answers for the whole test are:
1.Infrared waves have lower frequencies than ultraviolet waves. Since frequency and energy are directly proportional, infrared waves also have less energy than ultraviolet waves.
2.The student should model a convex lens because it directs light toward the center of the lens.
3.It transfers energy without transferring mass.
4. to disinfect surgical rooms
5. X-rays would be best because they are high-energy waves that can penetrate solids.
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Where can the following organelle be found:
Chromosomes
Prokaryotic Cells
Animal Cells
Plant Cells
How many daughter cells are produced in mitosis? Are they diploids or haploids? How do you know?
How many daughter cells are produced in meiosis?
Are they diploids or haploids? How do you know?
Describe the daughter cells of mitosis in terms of genetic information
Describe the daughter cells of meiosis in terms of genetic information
I WILL GIVE BRAINIST AND I GIVE 50 POINTS
Answer:
25
Explanation:
chomisons are in a cell