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marissa [1.9K]
3 years ago
13

Describe 3 diffferences between animal and plant cell's.

Chemistry
2 answers:
valentinak56 [21]3 years ago
4 0

Answer:

he key difference between plant and animal cells lies in the structural differences. Plant cells are rectangular wheres animal cells are round and plant cells contain chloroplasts, a cell wall, and vacuoles while animal cells do not.

Another difference is that plant cells have chloroplasts while animal cells do not. Chloroplasts, rich in chlorophyll, absorb light and conduct photosynthesis, providing the cell with the energy it needs.

The third is the fact that the plant cell doesnt require much nutrients as an animal cell would because for a plant  it uses Glucose for food as though animal require protien several vitamins water,and iron and vitamin b3

Explanation:

IrinaK [193]3 years ago
3 0
Animal cells are round, plant cells are circle (most of them) Plant cells have a rigid cell wall that surrounds the cell membrane. Animal cells do not have a cell wall.
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In the alveoli and lung capillaries, co2 and o2 are exchanged by means of _____.
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Through hemoglobin transport in blood, material exchange is carried out on the alveolar membrane.
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if the density of a bar of gold is 19.3g/cm^3and you cut it into four pieces , what is its density of each piece of gold
AlladinOne [14]
Density is an intrinsic property, so it is independent of the amount of substance present: one gold coin would have the same density as a solid gold boulder.

So if the density of gold is 19.3 g/cm³, the density of a bar of gold and the pieces into which the bar is cut would all be 19.3 g/cm³.
4 0
3 years ago
If a Kleenex box has a length of 8cm, width or 2cm, and a height of 4cm what is the volume of the Kleenex box?
Anettt [7]

Answer:

The volume of the Kleenex box is 64 cm.

Explanation:

Volume = B x W x H

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3 0
3 years ago
"It is not the union that organizes the employees; it is management."
blsea [12.9K]

The statement<em> "it is not the union that organizes the employees; it is management "</em> means that :

  • The management creates the climate which allows the union to convince employees to accept union representation.

This excerpt shows that although the union helps in the organization of employees for better and easy management of staffs by the management, the management creates an enabling environment by creating stipulations which allows the u ions to convince staffs to join and accept union representation in staff welfare matters.

Hence we can conclude that, the management creates the climate which allows the union to convince employees to accept union representation.

Learn more about union representation : brainly.com/question/10659490

3 0
2 years ago
A watt is a unit of power or energy per unit time (1 W = 1 J/s). A semiconductor laser in a CD player has an output wavelength o
GREYUIT [131]

Answer:

n = 2.208x10¹⁸ photons

Explanation:

The energy of a photon( an elementary particle) is given by the equation:

E = nxhxf

Where n is the number of photons, h is plank constant (6,62x10⁻³⁴ J.s), and f is the frequency. Knowing that the power level is 0.120mW (1.2x10⁻⁴ W), the energy in J, for a time of 78 min (4680 s)

E = 1.2x10⁻⁴x4680 = 0.5616 J

The frequency of a photon is its velocity ( c= 3x10⁸ m/s) divided by its wavelength, which is 780 nm = 780x10⁻⁹ m

f = 3x10⁸/780x10⁻⁹

f = 3.846x10¹⁴ s⁻¹

Then, the number of photons is:

0.5616 = nx6,62x10⁻³⁴x3.846x10¹⁴

n = 2.208x10¹⁸ photons.

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3 years ago
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