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Pani-rosa [81]
3 years ago
9

What is the main energy source?

Biology
2 answers:
klio [65]3 years ago
8 0
The Sun, if we're talking about Biology.
BartSMP [9]3 years ago
4 0
Like oil and gas an sometimes the sun
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If a chromosome in one of your bone cells becomes mutated, you will not pass this mutation onto your children because
Sladkaya [172]
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2. Which of the following describes the difference between nitrogen-14 and nitrogen-15? (1 point) Nitrogen-14 has 14 electrons,
lozanna [386]
The statement that describes the difference between the 2 isotopes of nitrogen would be the last set.

Nitrogen-14 has 7 electrons, 7 protons, and 7 neutrons

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4 0
3 years ago
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The ____________ functions as a gateway through which chemicals and small particles, such as ____________ enter or leave the cel
Vilka [71]

Answer: cell membrane

such as water, micro-organism

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simple diffusion, osmosis and filtration

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such as soduim-potassium pump, exocytosis

Explanation:  transportation in and out of cell is done in different ways listed above but a barrier to this movement is the cell membrane which is an outer covering of the cell. it protect the cell and only some materials can penetrate the cell membrane e.g micro-organism, water e.t.c. the various physical and physiological processes are the various ways substance  cna be liquid, solid or gas are transported within or outside the  cell e.g food

6 0
3 years ago
In an experimental set up, starch is placed in dialysis tubing and suspended in water. When lodine is added to the water, over t
Anettt [7]

Answer:

c. The starch stayed in the bag and the iodine leaked into the bag and the reacted with it, turning the solution black.

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According to the given information, the solution inside the dialysis tubing has starch while water present outside has iodine. The color of the water present outside the dialysis tubing does not change which means that starch did not leak out of the bag and stayed in the bag itself. On the other hand, the starch solution present inside the bag turned black representing the fact that iodine entered the bag. The reaction of starch with iodine produces a blue-black color.

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3 years ago
Our weight thermostats are somewhat flexible and are influenced by environmental as well as biological factors. some researchers
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The term that is being described above is SETTLING POINT. This term has been adopted by some researchers which refers to how our weight thermostats are rather adaptable and are affected by biological factors in the environment. This is based on the setting-point hypothesis.
5 0
3 years ago
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