How does breathing work?

Answers

Answer 1
Answer: Breathing in
When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.


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Blood flow is affected by both blood pressure and vessel resistance. a. True b. False

Answers

Answer:

True

Explanation:

Bloodflowisaffectedbybothbloodpressureandvesselresistance.

Final answer:

Blood flow is indeed affected by both blood pressure and vessel resistance. While blood pressure is the force exerted by blood on the vessel walls, vessel resistance is the opposition to flow that blood encounters in vessels. Both factors significantly impact blood flow.

Explanation:

The statement 'Blood flow is affected by both blood pressure and vessel resistance' is true. Blood pressure is the force exerted by the blood against the walls of the blood vessels. The higher your blood pressure, the harder your heart has to work to pump blood. On the other hand, vessel resistance refers to the opposition to flow that the blood encounters in vessels away from the heart. Factors that impact vessel resistance include vessel diameter and blood viscosity. Thus, both blood pressure and vessel resistance play critical roles in affecting blood flow.

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According to cell theory, all cells carry out the functions needed to sustain life. That means all cells must contain A) DNA. B) a nucleus. C) organelles. D) a control center.

Answers

According to cell theory, all cells carry out the function needed to sustain life.It means all cells must contain DNA  as it is a molecule that holds biological instructions to develop, survive, and reproduce.

Thus, option A is correct.

What is cell theory?

  • Cell theory is given by Robert Hooke.
  • According to cell theory all cells arise from already existing cell
  • Cell is the basic structural and functional unit of life
  • All living organisms are made up of cell either single or multi cell

DNA is deoxyribonucleic acid made up of two polynucleotide chains that arranged in a double helical structure.

The main functions of DNA are replication, uncoding  information,recombination and gene expression.

DNA plays a vital role and it is considered as primary unit of heredity in all types of organisms.

Therefore,According to cell theory, all cells carry out the function needed to sustain life.It means all cells must contain DNA  as it is a molecule that holds biological instructions to develop, survive, and reproduce.

Thus, option A is correct.

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Please answer ppl asap

Answers

Answer:

its an animal cell in concentrated solution

what do u mean by this chromosones contain information of inheritance of character from parent to next genration in the form of dna

Answers

Answer:

Explanation:

DNA are the building blocks of chromosome. Think about a blueprint. Blueprint contain instructions of how to build something, the actual instructions are the drawing and those drawings are housed on the blue paper.

So if you connect that analogy to this, DNA is actually the code that tells your cell how to do, what to do and such, they are actual genetic codes with bases such as Adenine, Guanine, Cytosine, and Thymine arranged in a double helix pattern. The chromosomes are the structures that are a result of arrangement of billions and billions DNA bases, thus they are the structures that house DNA and gene (part of DNA that codes for stuff)

What is the unit cost if a dozen eggs cost $1.35?A) $0.11
B) $0.13
C) $1.23
D) $4.29

Answers

total eggs=12
dozen eggs cost =1.35 dollars
one egg =12/1.35
=0.11 dollars

Answer:

The cost of an egg is $0.11

Step-by-step explanation:

Given : The cost of one dozen of eggs is $ 1.35

We have to find the cost of one egg.

We know, one dozen has 12 units

Thus, One dozen of eggs contain 12 eggs

So cost of 12 eggs is $ 1.35

So to find the cost of one egg divide the cost by 12.

We get,

1 egg =

Thus, The cost of an egg is $0.11

When an earthquake occurs within Earth’s crust and sparks a tsunami, energy is transformed. Describe the transformations that occur in this example.

Answers

Answer:

Potential energy into kinetic energy.

Explanation:

The uplifting of water occurs due to earthquake in the sea floor is refers to potential energy while on the other hand, the movement of water to the land in the form of waves is the kinetic energy. So we can see that the transformations of energy occurs from potential energy due to earthquake into kinetic energy occurs due to movement of water in the form of giant waves (tsunami).