Chemistry Middle School

Lucia is given a picture of several cells. Her task is to identify the cells as plant or animal
cells. How can she pinpoint the cells that are plant cells?
A. She should look for a cell membrane surrounding the cell.
B. She should look for cytoplasm that is filled with organelles.
C. She should look for a large nucleus in the center of the cells.
D. She should look for ovals full of green dots called chloroplasts

Answers

Answer 1

A.
Plant cells have a cell wall, animal cells do not.

Answer 2

Answer:

D She should look for ovals full of green dots called chloroplasts

Explanation:

Plant cells are the only cells that will have chloroplast as it helps the plant go through photosynthesis.

Related Questions

A pitcher throws a softball toward home plate. When the ball hits the catcher’s mitt, its horizontal velocity is 32 meters/second. The softball’s velocity goes to 0 meters/second in 0.8 seconds when caught. If the softball has a mass of 0.2 kilograms, what’s the force of the impact? Use F = ma, where .

Answers

Answer:

To calculate the force of impact F, first lets calculate the acceleration a of the ball:

a=v/t where v is the velocity of the ball and t is time

a=32/0.8=40 m/s²

To get the force F we need the Newtons second law:

F=m*a where m is the mass of the ball and a is the acceleration.

F=m*a= 0.2*40 = 8 N

So the impact force is F= 8 N.

Explanation:

Need help with this.

Answers

Answer:D

Explanation:

Answer:

here the answer would be D

Explanation:

if the two substances together have a different weight then the substance split but added together then this suggest that a new substance with a whole new mass was formed.

How much energy is required to completely melt a 250 gram ice cube that is already at 0 degrees Celsius? Show your work & units. Expected Answer = 83,500 J

Answers

Answer:

Q = 83500J

Explanation:

[tex]Q = L_{ice} *m[/tex]

[tex]L_{ice} = 3.34*10^{5} \frac{J}{kg}[/tex]

[tex]m = 250g = 0.25kg[/tex]

[tex]Q = (3.34*10^{5} \frac{J}{kg})*(0.25kg)[/tex]

[tex]Q = 83500J[/tex]

Can someone please answer these 2 for me :)) I WILL GIVE BRAINLISTTTTT

Answers

gold is the piece of metal which have larger mass.

Explanation:

because it is reactive in nature than copper

Gold
Because gold has a greater density than copper therefore 1 cm3 of gold is equal to a mass of 19.3 g while 1 cm3 of copper is 8.9 g

why is Galileo Galilei impotant?

Answers

Answer:

He provided a number of scientific insights that laid the foundation for future scientists. He also improved telescope that helped further the understanding of the world and universe.

Explanation:

Answer:it’s because Galileo Galilei is pretty much the father of today’s modern science

Explanation:

I hope this helps :)

help please!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Im in the 10th grade and i got not a clue how to do this dawg

Answer:

HCl , Chocolate Milk , NaCl + H2O, Sand + H2O , Tea + Sugar

Explanation:

here the answer Deku

How do water, wind, and thermal energy from the sun move about the earth's surface?

Answers

When the Sun's energy moves through space, it reaches Earth's atmosphere and finally the surface. This radiant solar energy warms the atmosphere and becomes heat energy. ... “Convection is the transfer of heat through the movement of a fluid such as water or air.

Molecules move more quickly because the sun's light energy transforms into heat energy on the planet. While cooler polar air and water travel away from the poles and towards the equator, warm air and water molecules rise and move in the opposite direction.

What is light energy ?

The capacity to make different forms of light visible to human sight makes light energy a sort of kinetic energy. Light is referred to as an electromagnetic radiation that is produced by hot things like the sun, lasers, and lightbulbs. Photons, which are tiny energy packets, are present in light.

Water temperature, biological activities and plant photosynthesis and development are all impacted by light energy.

The air is heated by the sun, and warm air rises. The colder air from the surroundings is forced to enter to replace the rising heated air. The result of this is the wind. Ocean currents function similarly.

Thus, Molecules move more quickly because the sun's light energy transforms into heat energy on the planet.

To learn more about light energy, follow the link;

https://brainly.com/question/9444330

#SPJ2

NEED HELP ASAP
I GIVE BRAINLY

Answers

Answer:

True, False, True, and False

Explanation:

1. False
2. True
3. True
4. False

I hope this helped :)

The Newton is the SI unit for ____.
temperature
density
weight
mass

Answers

Answer:

Mass

Explanation:

Weight is the correct answer and not any of those other options

helpppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Explanation:

thnx for the brinliest

If all three metals were exposed to extremely high temperatures, which would be the last to melt?
(gold, mercury,copper)

I WILL GIVE BRAINLIST!!!

Answers

Copper would be the last to melt because it has the highest melting point!

Answer:

copper

Explanation:

because copper melts at 1,083

gold at 1 064

mercury at - 38

ok so the question is Sort the processes based on the type of energy transfer they involve. condensation
freezing
deposition
sublimation
evaporation
melting and the catigoreies are thermal energy add or thermal energy removed.

Answers

Maybe evaporation???????????????

Answer:

Maybe evaporation and sublimation??????????????????????

Explanation:

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