Why are most cells 70 percent water?

Answers

Answer 1
Answer:

Cells are the units that together make the organism. Most of the cells are 70% water as it is the most abundant molecule that makes the cytoplasm and organelles.

What is a cell?

A cell is a structural organization that is composed of various organic, and inorganic substances that also have water as the most abundant molecule. It is the most important component that is needed for cellular and metabolic reactions.

It makes the cytoplasm of the cell that occupies most of the cell portion. Water is the most important reactant and the product of the photosynthesis and respiration processes of plant and animal cells.  Water is needed by the cell to transport the nutrients and the waste, and even in cell signaling.

Therefore, cells are made of 70% water as the component.

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Answer 2
Answer: because most of the chemical reactions that happen in your metabolism happen in water.

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How can one object affect the motion of another without touching it? Give a specific example.

Answers

There are two types of forces

1. Physical force : in this type of forces we require direct contact between two bodies

2. Field force: here we do not requires any type of physical contact with the body

so here in this type of field force we do not required any contact but only due to field present near it the body can move

so here several examples are there

a) when a magnet is placed near a piece of iron then it will move towards the iron

b) a positively charged particle when come near another charged particle then it will get attracted or repelled.

so as per all above discussion we can say that an object can move without any direct contact

Final answer:

Objects can affect the motion of others without touching through the force of gravity. For example, the Moon affects the tides on Earth.

Explanation:

One way that an object can affect the motion of another without touching it is through the force of gravity. Gravity is a long-range force that acts between all objects with mass. For example, the Moon affects the motion of the tides on Earth without physically touching the water.

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Athens was known for its love of ________, the________, and architecture.

Answers

Athens was known for its love of pottery  , the sculptures , and architecture  


I hope that's help !


What TWO things affect the gravitational force acting on an object?

Answers

The strength of the gravitational forces between two masses depends on

--  the product of the masses,

-- the distance between their centers of mass.
mass and distance (between two objects) are those TWO things that affect the gravitational force acting on an object

What do you think that astronomers mean when they use the term observable universe? (Hint: Think of the time it takes for light from very distant objects to reach Earth.)

Answers

What does "observable universe" mean?

Light does not travel instantaneously between points in space. It has a finite speed "c", measured experimentally to be about 3 x 108 meters/second (or about 1.1 x 109 kilometers/hour. Flying at this rate you could get from NYC to Tokyo in about 1/30th of a second.)

Since light takes time to travel, we never actually see the current moment. Looking down at your hand, you do not see it as it is right now, but rather as it was a miniscule fraction of a moment earlier. Now, this interval is so small, given the short distance between your retina and your hand, that the difference is utterly negligible. In fact, bound by Earth's meager scope, the phenomenon isn't really worth mentioning.

The discrepancy becomes significant, however, when exploring much larger distances. Light years, for example. A light year is the distance light travels in one year. If you look at a star that's 50 light years away, you are seeing it as it was 50 years ago. Thus the deeper you peer into space, the farther you are seeing back in time. If this star had exploded 49 years ago, in a spectacular event called a Supernova, we would not know it until 1 more year from now.

Likewise, any event that happened beyond a certain point in the past is unknowable to us if the signal from it hasn't had time to reach us. It is not that our telescopes are too weak, or our instrumentation insensitive. We simply do not yet have access to the information. (No matter how prolific a reader you may be, you'd be hard pressed to read a friend's email if it has yet to arrive in your inbox.)

As a consequence of this limitation, astronomers often refer to the observable universe, a term referring to the volume of space that we are physically able to detect. The question of what lies outside this observable region is a tempting one to ponder. Yet inspiring though it may be, there is a certain futility in such a pursuit.

A car is traveling at 20 m/s. It takes the car 120s to go from one intersection to a second. What was the displacement of the car between the two intersections?

Answers

We don't know if the road is perfectly straight between the intersections,  or if the road bends, curves, or turns between them.  So we don't have enough information to calculate the displacement between them.

But we can calculate the distance the car traveled between them.

Distance = (speed) (time)

Distance = (20 m/s) (120 s)

Distance = 2,400 meters

Which type of energy transformation
takes place in the light bulb

Answers

Answer:

electrical energy

Explanation:

in the light bulb, the flow of charge through the filament heats it up and causes it to glow. In this way, the light bulb converts electrical energy to heat energy and light energy.