The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide. The primary organs of the respiratory system are the lungs, which carry out this exchange of gases as we breathe. The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Biological systems are made up of group of organs that perform a particular function.
Biological systems are peculiar to higher organisms. Examples include:
Digestive system: this system consists of organs that brings about the assimilation and digestion of food. It carries out this function through the mouth, stomach, small intestine and large intestine.irculatory system: this system serves the basic function of transporting soluble food, excretory products and oxygen, throughout the body. This system consists of the heart, arteries, veins and so on.The division of labour in the body systems leads to efficiency of their various functions.
But the two biological systems mentioned above are interconnected. Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System which then carries those nutrients where they need to go.
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HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
same thing as before cuz points lol
D.
Explanation:
If she were to use a different type of paper she'd then be testing two variables instead of just the one (what affect does different plane shapes have on the distance)
Could water exist on this planet?
Answer:
With oceanic water covering 71% of its surface, Earth is the only planet known to have stable bodies of liquid water on its surface, and liquid water is essential to all known life forms on Earth. ... Water is thought to exist as liquid beneath the surface of some planetary bodies, similar to groundwater on Earth.
Answer:
bruv what planet
Explanation: you did not give us a planet kid
Smita is experimenting with how a paper airplane's shape affects the
distance it will fly. Which action is the result of her logical reasoning?
A. She follows her procedure carefully.
B. She records only the data that support her favorite hypothesis.
C. She decides to use the same type of paper for each airplane.
D. She decides to perform the experiment outside on a windy day.
+ PREVIOUS
Answer:
hey have you gotten the answer, sorry I'm struggling with this question
Answer:
C
Explanation:
I’m a genius
what observations do you have about the plant cell
The plant cell is eukaryotic and is surrounded by a cell membrane and a cell wall made up of cellulose.
What is a plant cell?Plant cells are eukaryotic cells with a genuine nucleus and particular organelles to carry out particular tasks. Plant cells do, however, include several organelles that are unique from those seen in other eukaryotic cells.
Chloroplasts, cell walls, and intracellular vacuoles are a few characteristics that set plant cells apart. Chloroplasts are responsible for photosynthesis, cell walls provide plants the strength to stand upright, and vacuoles control how cells handle water and store other molecules.
Parenchymal, sclerenchyma, and collenchyma are some types of plant cells. These cells are different in structure and function.
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Any description or quality that an object has is called a?
Answer:
veritable
Explanation:
Which of the following is not a type of carbohydrate?
A. multisaccharide
B. disaccharide
C. polysaccharide
D. monosaccharide
Carbohydrates include small or large molecules. Small molecules are monosaccharide or disaccharide. Large molecules are polysaccharide. Option A is not a type of carbohydrate. Multisaccharide.
What are carbohydrates?
Carbohydrates are essential molecules for life as they are the main source of energy necessary for organisms.
Carbohydrates are hydrophilic substances soluble in water and alcohol. Their -OH groups are responsible for that solubility.
Carbohydrates are present as small or large molecules.
Small molecules ⇒ sugars ⇒ monosaccharide and disaccharideLarge molecules ⇒ polysaccharideGlucose is the principal carbohydrate cells use to accomplish their vital functions.
Among the options, the one that is not a type of carbohydrate is Option A. multisaccharide.
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Why do field researchers and laboratory researchers use tools that are similar and tools that are different
Answer:
Please see below
Explanation:
These two types of research, that is, in the laboratory and in the field, are very different from each other for a number of reasons. For one, the study is conducted on a much larger scale when it is done in the field as compared to when it is confined in the lab.
Tools such as PCR (polymerase chain reaction) would be common between the two since there is no substitute for it. However, other tools used that have various other purposes will be different between the lab and the field. For instance, a quadrant will be used to count plants in a field, but none is needed in the lab due to a smaller number of plants being studied.
The portion of the Earth and its atmosphere that can support life. The part of the global carbon cycle that includes living organisms and biogenic organic matter.
Answer:
Biosphere
Explanation:
It is biosphere because Biosphere refers to the area of the Earth or part of the ecosystem where living organisms lives , contain biogenic organic matter and it's also include ground and air.
It comprises of the area of water, air and land that support life or survival of living organisms.
Need ins
1. Which one of these things is not something that a clownfish needs?
a. algae
O b. the sun
O c. sharks
d. other clownfish
Answer:
c. sharks
Explanation:
A student is testing whether light is required for corn seeds to germinate. He plants one group of seeds in soil in the dark and leaves the other group exposed to light, sitting on moist paper towels.
Answer:
1 for the first one and the second one is the 3rd one
Explanation:
so 1 and 3
Answer:
number 1 for the first question
number 3 for the second question
Explanation:
How does the distance from this eye chart affect the number of letters visible on a line? What factor of the experiment is the eye chart? Control Group, Control Variable, Independent variable, or Dependent variable
Answer:
This question is asking to identify the variable in the experimental statement.
The eye chart is the CONTROL VARIABLE
Explanation:
An experiment consists of several variables to look out for in order to achieve any significant result. These variables are independent variables, dependent variables and control variables. Although independent and dependent variables are the major experimental variables, but control variables are also important.
A control variable is the variable that remains constant or unchanged throughout the experiment. Any change to the control variable will affect the dependent and independent variables. In this question, the eye chart is the CONTROL VARIABLE because it remains constant or unchanged. The same eye chart is used for the experiment.
N.B: The distance to the eye chart is the independent variable while the number of letters visible on the line is the dependent variable. Hence, changing the eye chart (control variable) will affect the distance and the number of letters visible.
Why don't the spontaneous deleterious mutations that occur in an individual
e.coli cause downward drops in fitness in this population? see section 23.6 ( page 475) ?
Answer:
Please see below
Explanation:
The reason behind this is the phenomenon of natural selection. The deleterious mutations do not provide a survival advantage so they are selected against, which results in these type of mutations to not be passed on - rather, they eventually get eliminated from the population.
Evolution occurs by_______,
the process in which
some members of a species, being better suited or adapted to their
environment, produce more offspring than others, so they pass
“advantageous traits" to their offspring,
Answer:
energy
Explanation:
Answer:
Evolution occurs by Life
Which statement best describes why a pond ecosystem could be considered an open system?
Answer:
Energy is contained within the pond ecosystem and is transferred within the system.
Do you think the cellular organisation is same for all the kingdoms
What will most likely happen if the planton population decreases in this ocean system
Answer:
The answer is B, shrimp will have more difficulty finding food.
Explanation:
Answer:
a) Salmon will completely disappear from the ocean.
b) Shrimp will have more difficulty finding food.
c) There will be a fast growth in the shrimp population.
d) Humans will have more salmon available to eat.
So the answer is B.
Hope it helps.
You are a forester charged with increasing productivity in a South American forest newly planted with pines from Oregon. You believe that the southern forest lacks the fungal diversity needed by the North American pines and that this lack of fungi is affecting the pines' productivity, but you have no evidence to support your ideas. Which of the following would be the best approach to assess the diversity of fungi likely contributing to tree productivity in the Oregon forest?
a. Do direct sequencing on representative soil samples from across the forest.
b. Expose the trees to radiolabeled CO2and then collect the soil samples with the greatest radioactivity and do direct sequencing.
c. Collect all the fruiting structures (mushrooms, morels, etc.) found above ground.
d. Count all the plant species and multiply by six, as David Hawksworth did when determining the ratio of fungal to plant species in England.
Answer:
The correct answer is : option A.
Explanation:
In this case an individual is experiencing low pines productivity. According to him that lack of fungal diversity affects the productivity of pines in southern forests.
To test this hypothesis or idea the best approach among the given option is to run a direct sequencing on soil samples from all across the forest. By sequencing representative soil samples for the will help in assessing the fungal diversity in particular soil sample and on that basis one can find the relation with productivity of pines.
Thus, the correct answer is : option A.
If you were a billionaire philanthropist like Warren Buffet or Bill Gates, where would you focus your efforts against tuberculosis?
Explanation:
If a chlorine atoms gains or loses a valence electron, it becomes a charged particle called a/an______?
Answer:
ion... ions are nagative and positive charge atom
What can be observed only by observing its affect on gravity
Answer:
Dark matter
Explanation:
Without dark matter the world can not be held together
What provides structure for plants
1. Carbonhyrdrates
2. Lipids
3. Nucleic acids
4. Proteins
Answer:
The correct answer is : 1. carbohydrate.
Explanation:
Cellulose is a major substance present in cell walls of the plants which provides support to the structure of plants. As it is most abundant bio polymer in nature are made up of monomers of glucose molecule joined together by bonds in between specific carbon atoms.
The rigidity of the plant is come from this carbohydrate, cellulose. Lipids, proteins are also component of the plant cell and plays various role in the cell for instance lipid acts as barrier and present in plasma membrane of the plant cell and provide insulation too.
Thus, the correct answer is : 1. carbohydrate.
How would be like if you have to see a dead body? Like at your future job.
Answer:
Forensic pathologists are specialist medical doctors who have had advanced training in human anatomy, pathology and performing autopsies on people who die of trauma or injury.
Explanation:
You basically work at a morgue. Maybe you are an embalmer. Does any of this apply to you? You need to be mentally, emotionally and physically prepared for this type of work.
In the box provided explain why living organisms
contain more hydrogen atoms than any other
atoms, yet 65% of a typical organisin's mass is
oxygen
Answer:
why do living organisms contain more hydrogen atoms than any other atoms, yet 65% of a typical organism's mass is oxygen? A large portion of an organism's mass is in the form of water. Water contains two hydrogen atoms and one oxygen atom. The mass of oxygen is sixteen times that of hydrogen.
Answer:
i copy pasted the question twice and that works idk why tho bu heyy
Explanation:
true or false: Liquid water freezes at the same temperature at which ice melts
Answer: True
Explanation:
What does dehydration mean in real life
Mitosis, followed by cytokinesis, results in the formation of two genetically identical daughter cells. This is because:______
a. after replication, the material is compared and corrected to be identical. the chromosomes pair up (synapse) in prophase as a counting mechanism.
b. all the genetic material is duplicated then segregated equally to the daughter cells.
c. daughter cells are initially haploid, but they duplicate their chromosomes to become diploid again.
d. the number of chromosomes needs to be reduced before cytokinesis.
Answer:
b.
Explanation:
The correct answer would be that all the genetic material is duplicated then segregated equally to the daughter cells.
Mitosis has to do with the division of vegetative or non-reproductive cells in the body of organisms. At the interphase stage of each cell cycle prior to mitosis, the genetic materials of the cell are doubled or duplicated.
These genetic materials are then distributed equally to the two daughter cells that are produced at the end of the mitotic process. It thus means that the resulting daughter cells are genetically identical in all ramifications.
The correct option is, therefore b.
Mitosis, followed by cytokinesis, results in the formation of two genetically identical daughter cells because: B. all the genetic material is duplicated then segregated equally to the daughter cells.
Mitosis refers to a type of cell division (duplication) through which a single (1) parent cell produces two (2) genetically identical daughter cells.
In a mitotic division, the two (2) genetically identical daughter cells produced by one (1) parent cell generally have an equal number of chromosomes as their parent cell, this process is referred to as duplication division.
In this context, if a cell divides by mitosis followed by cytokinesis, this would result in the formation of two genetically identical daughter cells because all the genetic material is duplicated and then segregated equally to the daughter cells.
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Si una persona sana que no tiene mutaciones en el cromosoma 4 decide tener hijos con una persona heterocigota (A/a) que padece de la enfermedad de huntington, ¿cuál es la probabilidad de que esta pareja tenga hijos que padescan la enfermedad?
Answer and Explanation:
Cruza: persona sana sin mutaciones con persona portadora
El parental sano aporta alelos normales del gen a la descendencia
El parental portador aporta un alelo normal y un alelo alterado. Tiene el 50% de probabilidad de transmitir la enfermedad a la progenie.
Parental) AA x Aa
Gametas) A A A a
Cuadro de Punnet) A A
A AA AA
a Aa Aa
F1) 2/4 = 1/2 = 50% de la progenie seran individuos sanos AA
2/4 = 1/2 = 50% de la progenie seran individuos portadores Aa
Como uno de los progenitores es portador, cada individuo tiene un 50% de posibilidades heredar el gen alterado.
Compare and contrast the functions of each of the following types of flasks: filter, Erlenmeyer, volumetric. (Site 1)
Answer:
Explanation:
1. A filter flask is made up of heavy, transparent glass and suction pump at one side. This kind of flask is used for filtering or distillation of substances and is not the best option for measuring as it is not accurate.
2. An Erlenmeyer flask is a conical flask that is best suitable for titration and for storing chemicals.
3. Volumetric flasks are the best kinds for preparing accurate volumes. They are used for making accurate measurements of solutions.
Answer:
See Below
Explanation:
The filter flask is an Erlenmeyer flask with a side-arm adapter. This arm allows a scientist to remove unwanted impurities from solids, liquids, or gases in a chemistry experiment. Ultimately, it allows the fluid, or filtrate, to pass through, but stops the solid particles in the process. The Erlenmeyer flask is designed with a flat bottom so it can be used to either boil a liquid or allow a liquid to form condensation. This flask allows a laboratory technician to stir or heat a solution without losing any liquid by placing a stopper in the neck. Lastly, volumetric flasks are used for creating solutions. With their long, narrow neck and flat-bottom, these flasks have a number of advantages and disadvantages. Their specific set of measurements provides a scientist great accuracy. A scientist can use this flask to create solutions, when a solute is mixed with a solvent. It can also be used for dilutions, when a liquid is made thinner by adding water or another solvent. However, because the neck of the flask is so narrow, it can be difficult to pour the measured liquid out of the flask if the scientist over-poured the measurement.
Animal cells do not directly contact
pure water. Which type of solution are
our cells bathed in?
A. hypertonic
B. hypotonic
C. isosmotic
D. isotonic
Answer:
D. IsotonicThe cells of your body are bathed in tissue fluid which is also a solution of salts, sugars and other chemicals in water.
Explanation:
PLEASE HELP! WILL GIVE BRAINLIEST! Are traits controlled by dominant alleles more common than traits controlled by recessive alleles? Please explain
Answer:
depends on F1 and F2
Explanation
Dominant traits
Dominant trait is a characteristic that clearly expresses, overwhelms other traits of the same type in a heterozygous genetic combination; is shown mainly in the F1 generation.
Diving traits
Recessive trait is a trait that cannot be expressed because it is overwhelmed by other traits of the same type (with a pair of symmetrical alleles) in a heterozygous genetic combination; recessive has not been shown in F1, but only occurs in F2 generation.