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umka21 [38]
3 years ago
12

Lignin

Biology
1 answer:
ANEK [815]3 years ago
4 0
A is yours answer I think
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Which of the following describes the difference between nitrogen-14 and nitrogen-15? ( point)
AveGali [126]

Answer:

D. Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons

Explanation:

In an atom, number of electrons is equal to the number of protons.  And the number of neutrons is equal to the difference between the mass number of the atom and the atomic number. For Nitrogen 14, electron is 7, proton is also 7 as number  of electrons and number of protons are equal. So, the neutron will be 14-7= 7. For Nitrogen 15, electron number is 7 so proton number will be also 7. Neutron number for nitrogen 15 will be 15-7= 8. That's why the answer is option number 4.

8 0
3 years ago
The dialysis bag remains the same size
Alexeev081 [22]
The dialysis bag will remain the same size in a isotonic solution.
8 0
3 years ago
An animal cell with a 30% salt solution is placed in a beaker with a 20% salt
AleksAgata [21]

Answer:

the animal cell will burst

Explanation:

If the salt solution in the animal cell is 30%, it means the water is at a 70% concentration. Outside is 20%, so the water is 80%.

Water will enter the cell. Water is at a higher concentration outside the cell (80%) or a lower concentration inside the cell (70%) by the process of osmosis.

Eventually, the animal cell will burst, because it does not have any cell wall to control the swelling of the cell that occurs as water flows in.

8 0
3 years ago
1. What is the purpose of meiosis?
defon

Explanation:

Production of gametes e.g sex cells.

Meiosis is a process which its to make daughter cells which are half the chromosome as the starter cell so the whole cell before it split

7 0
3 years ago
Que definición es la que mejor describe a un organismo unicelular y a uno pluricelular
leva [86]

Answer:

Los organismos unicelulares se componen de una sola célula que lleva a cabo todas las funciones necesarias por el organismo, mientras que los organismos multicelulares utilizan muchas células diferentes para funcionar.

5 0
3 years ago
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