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Alchen [17]
4 years ago
7

Which molecules may diffuse across a cell membrane without the expenditure of energy or the use of membrane proteins?

Biology
1 answer:
wel4 years ago
6 0

Explanation:

In simple diffusion, small molecules without charges such as oxygen and carbon dioxide flow through a plasma membrane without assistance and without expending energy. Other substances such as proteins, glucose and charged particles called ions cannot pass through the selectively permeable membrane

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ZWhat Organelle that conducts respiration for the cell
baherus [9]

Answer:

The organelle that conduct respiration for the cell is MITOCHONDRIA.

Explanation:

The cells of living organisms are made up of different organelles, each of the organelles have specific functions, which they perform. The mitochondria is the cell organelle that is responsible for carrying out respiration in the cells. Respiration involves the breaking down of glucose molecules in order to produce energy in form of ATP. Mitochondria is also called the power house of the cell because of its function of energy production.

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3 years ago
How does a single cell become a multicellular organism?
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A multicellular organism develops from a single cell.
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2 years ago
Please answer fast !
swat32
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4 0
3 years ago
which structure within a bone contains cartilage cells that divide and increase the size of the bone until adulthood?
kogti [31]
Epiphyseal plate is the structure within a bone that contains cartilage cells that divide and increase the size of the bone until adulthood.

The epiphyseal plate, also known as epiphysial plate,or physis, or growth plate, is a hyaline cartilage plate in the metaphysis at each end of a long bone or diaphysis. The plate is found in children and adolescents; in adults, who have stopped growing, the plate is replaced by an epiphyseal line<span>.</span>
6 0
3 years ago
When students start to feel the accumulating effects of stress, they might look for ways to prevent stress, deal with it, or mas
Otrada [13]

Answer:

Hence, the correct matches are:

A) - 4), 3), 9)

B) - 7) , 5), 10)

C) - 1), 2), 6), 8)

Explanation:

<u>A stressor </u>is a chemical or biological agent, a state of the environment, an external stimulus or an occurrence known to trigger stress to an organism.

<u>Stressor </u>will include 4) breaking up after a long relationship, 9) feeling burdened by academic pressure, and 3) suffering from overly noisy surroundings

<u>Healthy stress management</u> tips are helpful for reducing stress level.

<u>healthy stress management techniques</u> will match 7) practicing yoga a few times per week , 5) watching a sitcom and laughing out loud, preferably with friends , sleeping at least 7 hours per night, and 10) exercising regularly .

<u>detrimental stress management techniques</u> involves activities that harms the human helath and causes stress.

<u>detrimental stress management techniques matches </u>8) using recreational drugs as an escape , 6) going out and binge drinking in order to blow off steam,2)  eating a whole tub of ice cream for comfort , and 1) consuming multiple energy drinks to keep up during all-nighters through finals.

Hence, the correct matches are:

A) - 4), 3), 9),

B) - 7) , 5), 10)

C) - 1), 2), 6), 8)

5 0
3 years ago
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