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yuradex [85]
3 years ago
9

A sperm cell fertilizes an egg cell, as shown below. This process plays a vital role in

Biology
1 answer:
Mama L [17]3 years ago
8 0
This process plays a vital role in reproduction.
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Here plz help? i’m stuck
almond37 [142]

Answer:

I'm sorry. I wanted to try and answer the question but I can't because it isn't clear.

4 0
3 years ago
Explica el impacto del desarrollo de las técnicas moleculares en los sistemas de clasificación de los organismos.
docker41 [41]

Answer:

Las técnicas moleculares, especialmente aquellas basadas en la manipulación del material genético, permitieron automatizar el proceso de identificación y clasificación de especies

Explanation:

Las técnicas moleculares usadas para la clasificación de organismos son aquellas principalmente relacionadas a la manipulación de su material genético. En especial, las técnicas de extracción de ADN, amplificación mediante la reacción en cadena de la polimerasa (PCR) y posterior secuenciación han posibilitado automatizar el proceso de clasificación de organismos. Los marcadores moleculares de ADN basados en secuencias génicas evolutivamente conservadas tales como, por ejemplo, la secuencia del gen Citocromo Oxidasa I (COI) en animales, son ampliamente usados para automatizar este proceso de identificación y clasificación de nuevas especies.

8 0
2 years ago
Humans currently rely on fossil fuels for the majority of their energy needs. A. Why can't humans always use fossil fuels for en
Svetach [21]

Answer:

I am going to answer the questions in one brief summary of fossil fuels.

Fossil fuels are non-renewable, meaning one day they will run out.

Fossil fuels are reliable, meaning rain or shine we can use them.

Fossil fuels emit greenhouse gases, causing our world to warm up.

8 0
2 years ago
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
2 years ago
The full extent of my __________ skill is preparing scrambled eggs on toast.
olga nikolaevna [1]
The answer is culinary. Hope this helps.
3 0
3 years ago
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