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3 years ago

SEEEE ATTACHHHHHMEEENNTTTTSS!!!!!

Biology

2 answers:

MrMuchimi3 years ago

8 0

Answer:

The 19 is A and the 20 is D

Explanation:

Work done is N *m

So it gonna be 20N*5m

Giving 100J

The 20 work is only done when the object sets into motion

pickupchik [31]3 years ago

3 0

Explanation:

For question no 19

Force (F) = 20N

distance (d) = 5m

Work = F * d

= 20 * 5

= 100 J

Now

For question no 20

D. No matter how much force is applied the object must have motion for work to be done.

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3 years ago

A cellular structure that can be found in each type of cell that is unique to each type of cell, but that has a similar function

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Answer

Complex barrier to the flow of substances out of the cells,and restrictions to inflow of unwanted substances into the cells. The hydrophobic and hydrophilic nature of the cell membrane controls the entry of substances from the extracellular medium into the intracellualr. In addition the polarity restricts certain substance movement across the walls.

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3 years ago