Biology Middle School

Someone help pls will mark Brainly and 20+ points


In your own words what is the function of the cell membrane?

Answers

Answer 1

Answer:

cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Explanation:

Hope this helps!

Answer 2

Answer:

The cell membrane provides a wall of protection around the cell, and also provides a way to regulate the transportation of materials going in an out of the cell.

Explanation:

Related Questions

A: A bright, egg shaped form. B: Dust, gas, and stars in a nonuniform arrangement. C: Dust, gas, and stars in the shape of a pinwheel.
Use the drop-down menus to identify each type of galaxy pictured.
Galaxy A:
Galaxy B:
Galaxy C:

Answers

Answer:

Can't answer without drop-down menus

Explanation:

can’t answer without drop down menus

What is the answer to number 2??

Answers

territory’s, most kingdoms /kings or queens called it that

Answer:

Animalia

Fungi

Protista

I hope this helps <3

What are the substances?

Answers

Answer:A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.

Explanation:

A substance is matter which has a specific composition and specific properties. Every pure element is a substance. Every pure compound is a substance. Examples of substances: Iron is an element and hence is also a substance

How are SA node cells similar to nerve cells?

Answers

Answer:

It has property of automaticity. Is is modified myocyte and depolarizes on its own and doesn't require and nerve.

Explanation:

Healthy human lungs look pink and spongy from the outside. The left lung is a little smaller than the right lung to make room for the heart. The lungs and heart are both protected by the rib cage. In the lungs, each main bronchus branches off into many smaller bronchi. The bronchi become smaller and smaller, and the smallest bronchi are called bronchioles. There are about 30,000 bronchioles in each lung, each about the same thickness as a strand of hair. The inhaled air eventually ends up in tiny air sacs called alveoli at the end of each bronchiole. There are about 300 million alveoli in each lung. They are covered with capillaries, tiny blood vessels that are only one cell thick. Oxygen travels from the alveoli through the capillaries to the bloodstream, heart and other cells.

Which of these best represents the progression of bronchi, bronchioles and alveoli in the lungs?

A
tree trunks that become smaller branches and twigs

B
a tight flower bud that has opened into a full bloom

C
whole apples that are sliced into separate wedges

D
a bridge that crosses two rivers

Answers

The answer is A the tree analogy is the best
I think that numberA
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