Once an egg has been fertilized, _____.
a zygote is formed(can be more than one answer)
the zygote becomes haploid
Answer;
-zygote is formed
Once an egg has been fertilized zygote is formed.
Explanation;
-Fertilization is the fusion of two haploid gametes to produce a diploid zygote. Each haploid gamete in humans has 23 chromosomes, while the diploid zygote has 46.
-A fertilized egg is called a zygote until it divides into 16 cells, forming a ball-shaped structure called a morula. In humans, it takes about four days for a zygote to become a morula and another three days until the embryo attaches itself to the mother's uterine wall.
The answer is a zygote is formed.
In the process called fertilization, the egg cells or so called ovum will fuse with a sperm cell. The result of this fusion leads to the development of the zygote which will then develop to an embryo.
Answer:
because it helps to know about the organisms that previously inhabited earth...
Answer:
Explanation:
The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.
Explanation:
Issun Shingeki... Messatsu!
In short, electrons are the negative charge in Atoms.
B. by decreasing the pressure of a chemical reaction
C. by increasing the concentration of reactants in a reaction
D. by decreasing the activation energy of a reaction
Answer: D) By decreasing the activation energy of a reaction
A catalyst is a substance that speed up the rate of chemical reaction without affecting the product of the reaction. They only affect the rate of reaction not the yield of reaction.
Catalyst provide an alternative reaction pathway that has lower activation energy than that of uncatalysed reaction. It increases the frequency of collision and because of these greater collision which lowers the activation energy of the reaction.
A catalyst works by decreasing the activation energy of a reaction, providing an alternative pathway for the reaction to occur with lower energy barriers. Therefore, the correct answer is option is d.
A catalyst works by D. by decreasing the activation energy of a reaction.
A catalyst is a substance that speeds up a chemical reaction without itself being consumed or permanently changed in the process. It achieves this by providing an alternative reaction pathway with a lower activation energy. The activation energy is the minimum amount of energy required for a reaction to occur.
Here's how it works:
In a chemical reaction, reactant molecules need to overcome an energy barrier, represented by the activation energy, to transform into products.
Catalysts provide an alternative route for the reaction that has a lower activation energy. This lower activation energy pathway is often referred to as the catalyzed pathway.
By reducing the activation energy, the catalyst allows more reactant molecules to possess the required energy to overcome the barrier and react, thus increasing the reaction rate.
Importantly, the catalyst itself remains unchanged at the end of the reaction and can be used repeatedly for other reactions.
In summary, a catalyst facilitates a chemical reaction by lowering the activation energy required for the reaction to proceed, making it easier for reactant molecules to convert into products and increasing the reaction rate.
Therefore, the correct answer is option is d.
Learn more about How a catalyst works here:
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B)bone structure
C)cellular architecture
D)homologous structures
Answer:
A dna sequences
Explanation:
B.They were all killed when a large meteor hit earth
C.They could not adapt to a new environment to avoid extinction
D. mammals out-competed the dinosaurs for food and living space.