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Which three organ systems are directly interacting when a person's brain sends a signal to the person's arm, causing the arm to
move up and down?
OA. muscular system, nervous system, skeletal system
ОВ.
nervous system, urinary system, skeletal system
OC. circulatory system, muscular system, respiratory system
OD. circulatory system, muscular system, skeletal system
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Answer:
A bc it moves the bones in the arm and the muscles and the nerves are what send the signals to the muscles to move
where does all the carbon in organisms originate from?
Answer:
plants from the earth's atmosphere.
Explanation:
Plants fix carbon in the form of carbon dioxide during photosynthesis. Then, any animal that comes along and eats the plant gets the carbon too.
which test measures the flexibility of the lower back and hamstrings
Answer:
The Sit and Reach Test
Explanation:
The Sit and Reach Test is one of the linear flexibility tests which helps to measure the extensibility of the hamstrings and lower back. It was initially described by Wells and Dillon in 1952 and is probably the most used flexibility test.
What is the 11 year solar cycle?
The Sun's magnetic field goes through a cycle, called the solar cycle. Every 11 years or so, the Sun's magnetic field completely flips. This means that the Sun's north and south poles switch places. Then it takes about another 11 years for the Sun's north and south poles to flip back again.
hope this helps!
Describe, step by step, the journey that
carbon dioxide takes from the alveolus
out of the body.
During the citric acid cycle, some carbon atoms are released.
What are these carbon atoms released as?
A. FADH2
B. Acetyl-CoA
C. CO2
D. ATP
Answer:
B. Acetyl-CoA
Explanation:
Acetyl CoA are released as carbon dioxide, one of the major products of cellular respiration, through a series of enzymatic reactions.
brief summary of conservation of forests & wildlife
least 10 page
With the advent of industrialization, several trees have been cut at an alarming rate for raw materials and various other purposes. This felling of trees can be regulated by selective cutting, clear-cutting and shelterwood cutting.
Forest fires are one of the common causes of loss of forests. Sometimes the forest land is set on fire to make the land available for commercial purposes. Once cleared, there can be no vegetation. Natural forest fires are also responsible for the destruction of huge forest covers. Latest fire fighting techniques should be adopted to conserve the forest. However, forest fires are an important part of the ecosystem and it helps replenish nutrients in the soil from dead and decaying matter.
More trees should be planted to increase the forest cover. Trees should be selected according to the geographical conditions of a particular region and proper care should be taken during the growth of trees.
Prevention of exploitation of forestry and forest products is necessary for the conservation of forest.
The existing forests should be protected from diseases by spraying chemicals, antibiotics or development of pest-resistant strains of trees.
somatic cells can also be called
Answer:
They are also called vegatal cells.
Explanation:
Soma- in Latin, means (Body),
So, Somatic cell .. means a Body cell,
Generally, our body contains 2 types of cells according to number of chromosomes :
1- Somatic cells : - almost all body cells are somatic cells
- contain 46 chromosomes (diploid)
2- Germ cells : - only sperms in male & Eggs in female, are germ cells
- they contain 23 chromosomes (haploid)
- they are supposed to unite together (Egg & sperm) to form a diploid cell (23+23=46) ...that will eventually grow into a baby.
Fossil evidence indicates that the first organisms on Earth were single-called prokaryotes. The first eukaryotes are believed to have formed from these prokaryotes. How does the endosymbiotic theory explain the development of the first eukaryotic organisms?.
The study of fossils shows that the eukaryotic cells have been evolved from the prokaryotic cells. The endosymbiotic theory has been used to study the evolution of eukaryotic cells.
The endosymbiotic theory states that:
Endosymbiotic theory is also referred to as the theory of symbiogenesis. The theory explains the evolution of eukaryotic cells from prokaryotic cells. The theory explains the presence of chloroplasts and mitochondria, and how these organelles form the eukaryotic cells. The theory explains the origin of mitochondria in animal cells and chloroplasts in plant cells.
Thus, the endosymbiotic theory defines the development of eukaryotic cells from the prokaryotic cells.
To know more about endosymbiotic theory, refer to the following link:
https://brainly.com/question/2957447
Explain how scientists can have multiple theories about the effects of global warming.
Plz make it about 3 sentences
Answer:
1. global warming is caused by excess carbon dioxide
2. it melts glaciers
3. it cause ozone to break
Answer:
ANSWER FROM EDGE 2022 : The global climate is a complex system involving different factors such as temperature, precipitation, pressure, humidity, and wind. The complexity of the system makes it difficult to accurately predict how changes in one region can affect other regions.
NOT COPIED ANSWER: Data collected over years show that the global average temperature is steadily rising. Scientists will be able to develop multiple hypotheses about the effects of global warming in the coming years because of this.
Both choices is correct! First one is from edge second is mine I answered personally.
Explanation:
got it correct ik I'm late but for upcoming students! edge 2022.
which of the following pairs Is most closely related? a- Tree and ant b- bacterium and tapeworm c- spider and fern d- wolf and cat
The closely related context here refers to the existing similarity used to classify these group of organisms.
Of the pairs, the most closely related is the wolf and cat
They are first and foremost both animals.They are also both vertebratesThey also belong to the same class of mammalsThese similarities makes them more closely related than any of the other following pairs which include a plant and an animal, an invertebrate and a single celled organism, another plant and an invertebrate.
Learn more about mammals: https://brainly.com/question/935140
1. Who was Alfred Wegener?
What did people previously believe about the movements of Sun and Earth?
Answer:
They thought of the geocentric theory, or that the earth was the center of the universe
Explanation:
Shown below are 4 stages (A,B,C,D) (not in sequence) of a certain kind of cell division.
The diagram below shows a cell undergoing mitosis (cell division). The correct order of the stages is B, C, D and A.
Mitosis is a type of cell division in which a parental cell divides to produce two genetically identical daughter cells.
In this case, an animal cell is undergone mitosis because the cell exhibits centrioles (only found in animal cells) and lacks cell walls (only present in plant cells).
The stages of mitosis include prophase, prometaphase, metaphase, anaphase, and telophase.
Learn more about mitosis here:
https://brainly.com/question/13536882
What will happen if your body can't make saliva and bile?
Answer:
Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract. Bile contains: Mostly cholesterol
Why stochiometric important in industry of chemical substance
Answer:
Stoichiometry is used in industry quite often to determine the amount of materials required to produce the desired amount of products in a given useful equation
In three to five sentences, describe the advantages and disadvantages of these maps in modeling mitosis.
ii am confused blease elaborate
so sorry
How many variables can a scientist change during a scientific investigation?
Answer:
Three
Explanation:
#Classify the following animals:
• Blue Whale
Kingdom:
Sub-Kingdom:
Class:
• Penguin
Kingdom:
Sub-Kingdom:
Class:
Answer€~
1)Blue whale
Kingdom=Animalia
Phylum=Chordata
Class=Mammal
2) Penguin
Kingdom=Animalia
Phylum=Chordata
Class=Aves
Hope it's helpful Ty good evening ☺️#urJ.r90'sꔪ~A form of asexual reproduction in bacteria and other prokaryotes that involves the splitting of a parent cell into two independent cells is
called binary fission
True
False
a particular peach tree produces peaches that are more resistant to disease than other peaches. what method would reproduce these exact peaches?
The best way to get the exact preach tree is through Asexual reproduction.
Asexual reproduction is the only method of reproduction in which the exact copies of genes in the parents are transferred to the offspring. If cross pollinations( Sexual reproduction') with the a peaches plants from a different parents plants takes place, genetic variation at meiosis will not permit the inheritance of the exact copies of genes for diseases resistance.
Therefore, it is ideal in this scenario to by pass crossing over and recombination at meiosis, in order get the exact copes of genes for disease resistance through mitosis in the offspring, asexual preproduction is used.
For more on asexual reproduction; https://brainly.com/question/4100787
The method that would produce peaches of exactly the same characteristics would be cloning or vegetative propagation.
Cloning the peaches that are more resistant to disease will result in the production of peaches with exactly the same morphological and genetic attributes.
The same result would be obtained by propagating the desired peaches asexually using relevant means.
More on asexual reproduction can be found here: https://brainly.com/question/4100787?referrer=searchResults
By what method do bivalves gain food for nutrition?
They absorb the nutrients they need.
They are filter feeders.
They use their radula to scrape objects to use for food.
Answer:
They absorb the nutrients they need.
Explanation:
Answer:
They are filter feeders.
Explanation:
i took the test
MULTIPLE CHOICE QUESTION
Which statement best describes the
location of Australia?:
Southern & Western Hemispheres
Northern & Western Hemispheres
Southern & Eastern Hemispheres
Northern & Eastern Hemisphere. (Please I only have two minutes to answer)?
Answer:
south eastern hemisphere
Explanation:
it's found on easternmost and southernmost side of asia although it's called oceania it's generally south east
a cell makes and secretes a certain protein. explain where it is made, how it is secreted from the cell and what kind of transport is used
. . . . . . .. . . . .. . . . . . . . . . . . . .. ..
Hope this helps
When was a control used in the investigation of the amphipods and sea butterflies? Why was a control necessary?
pteropods or sea snails, also called sea angels, produce chemical deterrents to ward off predators, and some species of amphipods take advantage of this by carrying pteropods piggyback to gain protection from their voracious predators.
Why was progress in science interrupted during the dark ages? The Roman Empire fell in the 5th century thus advancements in science came to a halt. As science halted in Europe, where else did it advance? Science advanced in other areas of the world like China, Polynesia, and Arab nations.
Which of the following describes an
endergonic reaction?
A. this releases energy from a bond by breaking it and ending with
low-energy products
B. this creates bonds that have absorbed energy from its
surroundings and created energy-rich products
C. this rearranges the shape of a molecule to fit into a protein
better
This creates bonds that have absorbed energy from its surroundings and created energy-rich products.
Describes an endergonic reaction?An endergonic reaction is a type of reaction that requires free energy to proceed. An example of an endergonic reaction is photosynthesis because the reaction uses solar energy.
So we can conclude that this creates bonds that have absorbed energy from its surroundings and created energy-rich products.
Learn more about reaction here: https://brainly.com/question/26018275
#SPJ1
Answer:
Look easy answer B that guys answer is long
Explanation:
Define gamete and zygote. What number of chromosomes does each have?
Answer:
gamete: a mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote. zygote:a diploid cell resulting from the fusion of two haploid gametes. zygote has 46 chromosomes, gamete has 23
Explanation:
Why does crab grass do so well when ordinary grass struggles in late summer? Is this a phenomenon ? Or is this based on a scientific principles, what is it that causes crab grass to thrive in relation to the different type of plants ?
Crab grass does so well when ordinary grass struggles in late summer
because its seed germination is higher when exposed to hotter
temperatures.
The seeds of crab grass are mostly dormant and their germination is
dependent on the soil temperature. During summer, the temperature of the
soil is usually higher which aids its growth .
This therefore explains the reason why crab grass does well than ordinary
grass in late summer periods.
Read more about Crab grass https://brainly.com/question/7601938
What is Transpiration ???!
[tex]\huge \bf༆ Answer ༄[/tex]
Transpiration is the the phenomenon which generally occurs in plant, In which the plant looses water in the form of water vapour through stomata.
Two main functions of transpiration ~
It causes transpirational pull that helps in transportation of water from roots to upper portions of the plantIt helps to release excess waterPlant absorb a large quantity of water from the soil by roots . this water reaches to different part of the plant by ascent of sap . the total quantity of water absorbed by plant is more than their requirement. only a fraction of this water from a vapour throw the aerial parts like (stem , leaves , buds , and , flower) of plant which constitute about 95% of total absorbed water . this process is called transpiration .
Transpiration is vital process.This process mainly occur by stomata.Water evaporates in the form of vapour from aerial parts of plant.The loss of water per unit area is more It is regulated processTypes of Transpiration -:
1 Stomatal Transpiration ;
it take place through stomata present on leaves it is also called foliar Transpiration. it constitutes about 80-95% at total Transpiration.2 Cuticular Transpiration;
it take place by cuticle present on the epidermis of plant it is constituted about 5-10% of total transpiration it rate is high in tropical climate and low desert climate.3 Lenticular Transpiration
it take place through lenticles found in Woody stem and in some fruits it constitute 0.1-1% only of total transpiration.In three to five sentences, describe the advantages and disadvantages of these maps in modeling mitosis.
In biology, a model can be regarded as representation of the structure and function of biological molecules or maybe an event.
The advantages and disadvantages of these maps in modeling mitosis includes
They depicted the Interphase stages comprising of the G1, S and G2 phases.They also listed the phases involved in mitosis which is also goodThe other image is depicting mitosis too but there is no title and labeling to it which might be confusing.The models should be able to depict the various activities that occurs during mitosis meaning the second model should have contained labeling to indicate the process of mitosis.The first model should have contained pictorial representations to enable better understanding.Learn more about models in biology: https://brainly.com/question/2289444
Answer:
The disadvantages for both cells are that neither is an accurate representation of the cell themselves, or the processes. The first cell doesn't tell us exactly what phases the cell is currently going through, and the cell doesn't go through is phases through grey arrows either. However, it does tell us what the phases look like, and the process of how the cell goes through them. The disadvantages of the second map is that, it doesn't show what the phases look like, the advantages are that tells us what the phases are and what comes before and after them, while showing how this occurs in a cycle and keeps going until senescense.
Explanation: Please give me Brainliest! Thank you!