How do the diaphragm and rib muscles help with breathing? These muscles
pull lungs down to draw in air
change the air pressure
open up the air flow tubes
keep food out of the chest
push blood around the lungs
why did the scientific use a two-dimensional model instead of of another type of model.
Answer:
Sometimes, a diagram or image isn't enough. We need to test some things out in three dimensions. There are two main types of three-dimensional models, or models that have length, depth, and breadth, structural models and model organisms.
Explanation:
hope this helps
You will measure and compare the heart rates of ten learners before and after
exercise. Choose ten learners in class who are willing to participate in this activity
They are the runners. Each of these runners must choose a classmate who will
measure his or her pulse rate.
Write down the question you are trying to answer in this investigation.
1.Write a hypothesis about the relationship between exercise and heart rate.
Answer:
Exercise is responsible for the increasing heart beat.
Explanation:
Exercise is responsible for the increasing heart beat because our body needs oxygen more faster during exercise. When we exercise our body needs quick energy and oxygen which can be provided by heart as well as the heart also removes carbondioxide which is produces during respiration process so the heart beat increases in order to provide energy and oxygen to the muscles.
Why does sodium and potassium ions need a protein pump to pass through the cell membrane?
A. The ions have a charge and cannot pass directly through the cell membrane.
B. The ions are moving against the concentration gradient.
C. Energy is needed to move the ions.
D. All of the above.
Cell membrane have been the selective membrane that allows transportation. Sodium and potassium ions need a protein pump as they are charged particles that move against the gradient and need energy. Thus, option D is correct.
What is active transport?Active transport has been the way to move ions and molecules inside and outside the cell membrane. This system of transportation requires energy as the ions move from low concentration regions to the region of the higher electrochemical area.
The sodium and potassium pump needs proteins and energy to move the ions as the inside of the cell is rich in potassium and the exterior is rich in sodium ions. The charged ions moving against the concentration cannot enter the cell without energy and protein pumps.
Therefore, option D. all of the above statements are correct.
Learn more about active transport, here:
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According to Chargoff rule, if a sample of DNA is 32% Adenine, what is the percentage of Guanine?
Answer:
18%
Explanation:
Chargaff's rule states that A = T and C = G
The equation for this must be A + C = T + G
A and T should both be .32 since they're equal
--> .32 + C = .32 + G
Both sides must equal each other by .50
.50 - .32 = .18
.18 × 100 = 18% Guanine and also 18% Cytosine
what are the reactants of glycosis?
Answer:
Explanation:
The only true reactant of glycolysis is a molecule of glucose. Two molecules each of ATP and NAD+ (nicotinamide adenine dinucleotide, an electron carrier) are introduced during the series of reactions.
Help with this plz.
Answer:
just bro easy aquatic answer
Explanation:
hope it helps .
copy and paste .
mark as brainlest.
Answer:
i'd say it's camouflage...?
The diagrams show what happens to the shape of a plant cell place in distilled water. Explain why the cell swells and becomes turgid. Name the process involved.
Answer:
the name of the process should be osmosis
Explanation: Reason being that plant cells are hypertonic because they have a cell sap so when they are pout in distilled water which is a hypotonic solution, it then absorbs water by osmosis and swells up and become turgid. But they do not burst because they have a cell wall that develops a wall pressure that balances the turgor pressure exerted by turgid cells
(50 Points)
Drag the tiles to the correct boxes to complete the pairs
Match the nitrogenous base of DNA with its complement
See below
Answer:
surfaces curving inward, so it makes parallel light rays curve outward or diverge. That's why concave lenses are sometimes called diverging lenses. ... The distance from the center of the lens to the focal point is, again, the focal length of the lens.
Explanation:
which birth control method involves the cutting of sperm tubes or the oviduct?
the surgical method carried out in males is called ( Vasectomy) = cutting of sperm tube
in female it is ( tubectomy)
cutting of oviduct
T
A
A
C
G
C
A
G
What is the order of bases that will compliment this side of a DNA strand
Answer:
A, T, T, G, C, G, T, C
Explanation:
A becomes a T
T becomes a A
C becomes a G
G becomes a C
the chief purpose of the photosynthetic process is considered to be the
Enter the correct 4 digit code (no spaces)
The hidden code in the puzzle is 4321.
How to solve the riddle?The riddle in the picture has the objective of hiding the order of the numbers so that the reader finds the order. In this puzzle the reader must follow the line of each letter and find the order of the numbers to find the code.
Based on the above, it can be inferred that:
The letter A line leads to the number 4.The letter B line leads to the number 3.The letter C line leads to the number 2.The letter D line leads to the number 1.So the complete code would be:
4321Learn more about riddles in: https://brainly.com/question/478260
Answer:
It's actually 3214
Explanation:
20 Points!!!! Answer ASAP!!! Describe the process of oil extraction in complete sentences. Be sure to include information about how the process has changed in recent years.
Oil extraction is the process of recovering crude oil from underground reservoirs, in recent years, the process of oil extraction has changed, with new technologies and techniques allowing for more efficient and cost-effective oil production.
What is oil extraction?
The process of oil extraction involves drilling wells into the earth and then using various techniques to bring the oil to the surface, and the first step in oil extraction is to identify a suitable location for drilling, which is typically done using geologic surveys and other exploration techniques to locate areas with the potential for oil reserves, next step is to complete the well by installing a casing that helps to prevent the well from collapsing. Technologies such as "hydraulic fracturing," which involves injecting water and sand and assisting in the release of trapped oil and gas, have recently gained popularity.
Hence, it is the process of recovering crude oil from underground reservoirs, in recent years, the process of oil extraction has changed, with new technologies and techniques allowing for more efficient and cost-effective oil production.
Learn more about the oil extraction here.
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Explain why hormone-producing cells are always located in close proximity to
capillaries.
Answer:
Hormone Signaling The hormones then diffuse to the bloodstream via capillaries and are transported to the target cells through the circulatory system. This allows hormones to affect tissues and organs far from the site of production or to apply systemic effects to the whole body.
If you have a cube-shaped with 6 sides and each sides 4 cm in length and width what will be the Surface area? Volume? Ratio of surface area to volume?
Answer:
The surface area will be 96 square centimeters(96cm^2), and the volume will be 64 cubic centimeters(64cm^3). The ratio is 3:2.
Explanation:
To find surface area, you find the area of one side of the cube, which is length x width. For a cube, the length and width are the same, so it was 4x4, which gives you 16, and then you multiply that by the number of sides, 6, to get 96.
To find volume, you multiply length x width x height, which are all 4cm for the cube.
To find the ratio, you compare the surface area to the volume similar to a fraction, except side by side. I simplified 96 and 64 by dividing them by 8, which gave me 12:8, and then I simplified that by 3 which gave me 3:2.
Hope this helps!
Which of the following is a vector quantity?
A. distance of 25 km along Highway 66
B. a difference of 6°C between Point A and point B
C. an increase in a mass of 14 kg
D. a velocity of 2 m/s Northwest
Which would best explain why the production of transgenic plants may be harmful?
A. They are used in the production of rare medicines
B. They contain vital nutrients
C. They reproduce rapidly
D. They produce natural insecticides which could kill beneficial insects
Answer:
The answer would be the last one
Photosynthesis requires light, water, carbon dioxide, and
____.
What is the relationship between the hypothesis and conclusion?
Answer:
They both relate the outcome of an experiment. A hypothesis is an guesstimate of the outcome of an experiment, while the conclusion is the actual outcome.
Explanation:
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Rinoy wants to electroplate copper on an iron nail.
0 What should he use as the positive electrode and negative
electrode for this process?
(0) Which electrolyte should he use for the process?
(ii) Which of the two electrodes will gradually wear away
during electrolysis-anode or cathode?
Answer:
See explanation
Explanation:
Electroplating involves the coating of one metal on another metal. It is an electrochemical process. The positive electrode is the coating metal while the negative electrode is the metal on which the coating is to be performed.
Since copper is to be coated on an iron nail. A copper plate is made the positive electrode while the iron nail should be the negative electrode.
The electrolyte used in the process should be a copper salt e.g CuSO4 solution.
As electrolysis progresses, the copper electrode(positive electrode or anode) gradually wears away due to the fact that the copper ions are going into the solution and are being deposited on the iron nail.
justify that fluorine cannot exist monoatomic from nature
Answer:
Due to incomplete outermost shell.
Explanation:
Fluorine cannot exist monoatomic in nature because of its incomplete outermost shell. This incomplete outermost shell makes Fluorine more reactive and it can only be stable if it makes bond with other atoms through sharing of electron i. e. covalent bond or by complete transfer of electron i. e. ionic bond. This bond making completes its outermost shell and the Fluorine attain stability so that's why the Fluorine cannot exists in monoatomic in nature.
Please help if you answer correctly i will give brainliest
Answer:
1) Chicken: Codominance
2) Zebra: Independent assortment
3) Flowers: Incomplete dominance
4) Dalmatian: Law of segregation
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
2.1) What are two differences between plant and animal cells?
Answer:
Major structural differences between a plant and an animal cell include: Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not.
Answer:
plant cells have cell wall
plant cells have a single large vacuole
animal cells don't have cell wall
animal cell have many smaller vacuole
hope it helps
A break or crack, in Earth's surface along which movement occurs
A. Rock Cycle
B. Extinction
C. Ice Core
D. Fault
Answer:
fault
Explanation:
it is this because these can be massive or small then if tension builds up along a fault it is suddenly released and then it would result of a earth quake.
what type of organisms are included in protista
Answer:
Hey mate !! Answer :- The organism included in kingdom protista are :- 1) Amoeba 2) Algae 3)paramoecium 4)Eugulena etc . Common character among them is :- They are unicelluar organisms.
Explanation:
What is the effect of inputting stem cells instead of body cells into the original system?
Explanation:
Stem cell research indicates that s.cells are cells that are not fully developed; in turn if researchers inject a patient with type 1 diabetes into the pancreas the result is that the pancreas produces it's own insulin eliminating the chances of spikes in the blood sugars of the patient & also long term effects of high blood sugars that effect all vital organs & nervous system.
Researchers were also using stem cells to limbs that were amputated or damaged resulting in the limb regenerating itself.
I have seen a mouse that had a human ear attached to its body.
Researchers were ordered by our government to cease the experiments because pharmaceutical companies were making more $$ on medicines to supposedly help diabetics or veterans to live a normal life..
what are the possible stages of HIV infection? (choose all that apply)
•Clinical Latency
•AIDS
•Acute Infection
•Antiretroviral therapy
Answer:
- Acute Infection
- Clinical Latency
- AIDS
Hope this helps <3
What do all vectors and scalars have?
A. velocity
B. orientation
C. direction
D. magnitude
Answer:
D. magnitude
Explanation:
Scalars are quantities that are fully described by their magnitude (size) only. For example, a temperature is fully described by saying "80 degrees Celsius." We do not need to include a direction.
A vector contains both magnitude and direction. Acceleration is fully described by including both speed and direction: "45 m/s, North."
Both scalars and vectors have magnitude.
1. What is the contour interval on this map?
Answer:
100 is the contour interval of this map