Answer: The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.
Answer:
Some materials are so important to a cell that it spends some of its energy (hydrolyzing adenosine triphosphate (ATP)) to obtain these materials. ... Passive transport is a naturally-occurring phenomenon and does not require the cell to exert any of its energy to accomplish the movement.
Explanation:
Passive transport is a type of membrane transport that does not require energy to move substances across cell membranes. ... The four main kinds of passive transport are simple diffusion, facilitated diffusion, filtration, and/or osmosis.
A diagram should accompanying the question.
Plant cells and animal cells have organelles or structures that are common to both and some that are unique.
Unlike animal cells, plant cells possess chloroplasts, vacuoles, and a cell wall. the chloroplasts are the hub for photosynthesis, vacuoles hold water or sap and the cell wall gives plant cells a definite structure.
Animal cells are typically smaller than plant cells. Both cells have cell membranes, nucleus, mitochondria and golgi apparatus.
A function of the cell structure that it provides support to labeled x .
What is the function of cell?
- They give the body structure, absorb nutrients from meals, turn those nutrients into energy, and perform certain tasks.
- Additionally, cells have the ability to replicate themselves and contain the body's genetic material.
- Each component of a cell has a different purpose.
What is cell structure and function?
- Cell architecture - Individual parts of the cell structure each have a specific purpose that is necessary to carry out life's processes.
- Cell wall, cell membrane, cytoplasm, nucleus, and cell organelles are some of these elements.
- Continue reading to learn more about the composition and operation of cells.
3 Major Functions of a Cell -
- Energy Generation.- Living cells exist in a perpetually active biological state. .
- Molecular Transport - Each cell is surrounded by a membrane that delineates its boundaries and acts as a gatekeeper, controlling the movement of molecules into and out of the cell.
- Reproduction.
Learn more about cell structure
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Answer:
D 4
Explanation: the part of a cell that divides is the nucleus so i belive it is D 4