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maw [93]
3 years ago
10

You are looking at a slide using your microscope and see many things moving about. You notice a very rigid structure outlining t

he cell. You like to have as many facts as possible to back up any claims you make, specially in science. What else would help you to be sure what type of cell you are seeing?
Question 4 options:

lysosomes


chloroplasts


mitochondria


cell membrane
Chemistry
1 answer:
SIZIF [17.4K]3 years ago
3 0

The answer is; chloroplasts


Most cells have lysosomes, mitochondria and cell membrane. Hence these organelles cannot be used to differentiate cells. Chloroplasts, however, are only resent in photosynthetic cells such as plant cells and can be used as a distinguishing factor.


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Ions of an element (elements with different charges) contain different numbers of what
Vadim26 [7]

Answer:

an ion is an element that has different numbers of protons and electrons

Explanation:

An ion is positive when it has more protons than electrons and negative when it has more electrons than ions.

(Hope this was helpful!) :)

7 0
2 years ago
Which option draws the correct conclusion from the following case study?
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Answer:

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Explanation:

4 0
3 years ago
Read 2 more answers
The force of 20 N acts upon a 5kg block. What is the acceleration of the block?
charle [14.2K]

Answer:

<h2>The answer is 4 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

where

a is the acceleration

f is the force

m is the mass

From the question

f = 20 N

m = 5 kg

We have

a =  \frac{20}{5}  \\

We have the final answer as

<h3>4 m/s²</h3>

Hope this helps you

8 0
3 years ago
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6 0
3 years ago
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5)
Drupady [299]

What amount of heat absorbs 50 g of steel (ce = 0.115 cal / g. ° C) that

does its temperature vary by 25 ° C?

Answer:

143.75cal

Explanation:

Given parameters:

Mass of steel  = 50g

Specific heat capacity of the steel  = 0.115cal/g°C

Temperature  = 25°C

Unknown:

Amount of heat = ?

Solution:

The amount of heat to cause this temperature change is dependent on mass and specific heat capacity of the substance.

  Amount of heat  = m C (ΔT)

m is the mass

c is the specific heat capacity

ΔT is the temperature change

 Now insert the parameters and solve;

  Amount of heat  = 50 x 0.115 x 25

  Amount of heat  = 143.75cal

4 0
2 years ago
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