When the egg cell is fertilized with the sperm cell, it changes into a zygote. It then becomes a morula and blastula. Then it turns into grastula and neurula where neural plate is transformed into neural tube.. Finally, it becomes a human embryo.
B
An inorganic mineral is not composed of anything that was once alive
Explanation:
Organic minerals made from life. They mainly make up the biosphere and examples are minerals in plants and animals. Even after the death and decomposition of the living organisms, the minerals from the decomposition are considered organic. Organism matter is mainly made up of carbon and hydrogen.
Inorganic material, on the hand, are not derived from life and include substances like metal elements and inorganic salts.
Learn More:
For more on organic vs inorganic minerals check out;
brainly.com/question/11232288
brainly.com/question/10801059
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Hi lovely,
The answer you're looking for would be D) Spores
Answer
I added 4 and 5 as an attachment due to time constraint.
Explanation:
1. at a steady state ca2+ taken by vesicle = 40n/mol
enclosed volume of CSR = 5μ/mg
concentration of ca2+ in vesicle =
40*10⁻⁶/5x10⁻⁶
= 0.008
= 8x10⁻⁹mol/L
2. radius of circle =75nM
volume = 150nm
volume of vesicle = 4/3 x pi x r³
= 1.33 x 3.14 x (75x10⁻⁹)³
= 1.77 x 10⁻²¹
when we convert this we get
1.77x10⁻¹⁸L since 1m³ is equal to 100oL
surface area =4x3.14x(75x10⁻⁹)²
= 12.56x5.625⁻¹⁵
= 7.065x10⁻¹⁴m²
this is 7.065x10⁻¹⁰cm²
3. number of vesicle/CSR
= 5x10⁻⁶/1.77x10⁻¹⁸
= 2.824x10¹²
surface are = 2.824x10¹² x7.06x10⁻¹⁰
= 19.95x10²
Feel free to ask if you still don't understand
