If the egg is fertilized during ovulation, the fusion of the sperm and the egg forms a pronuclei then into a zygote (wherein the nuclei is already one or fused completely). It will then undergo the cleavage stage wherein the egg becomes a 2-celled to a 4-celled and to an 8-celled egg. Next is the morula stage as the cells grow larger in number. After that, the embryo starts to rise - the blastocyst stage. Last is the implanted blastocyst stage; the egg is now attached to the uterine lining.
Answer:
Answer:
safe speed for the larger radius track u= √2 v
Explanation:
The sum of the forces on either side is the same, the only difference is the radius of curvature and speed.
Also given that r_1= smaller radius
r_2= larger radius curve
r_2= 2r_1..............i
let u be the speed of larger radius curve
now, \sum F = \frac{mv^2}{r_1} =\frac{mu^2}{r_2}∑F=
r
1
mv
2
=
r
2
mu
2
................ii
form i and ii we can write
v^2= \frac{1}{2} u^2v
2
=
2
1
u
2
⇒u= √2 v
therefore, safe speed for the larger radius track u= √2 v
Answer:
5. c) cellulose
6. a) mitochondria
Explanation:
5. Plant cell walls are mainly made of cellulose.
6. Cell respiration is the process where cells convert sugar into energy. The mitochondria is the powerhouse of the cell and is responsible for converting sugars into energy for the cell.
Answer:
C
Explanation:
Dramatic changes in sea level occurred throughout the Cenozoic era and the rise and fall of sea level is recorded in the rocks of the Coastal Plain. This makes sense as it is the geographic region closest to the Atlantic Ocean.
Poor fitness can cause your heart to start disfunctioning, and not beating the way it should be. If an adult is not exercising often, they can end up having major heart problems that can affect the way they see their future.