Answer:
C
Explanation:
The flagella of the sperm are used to help it swim through the vagina and uterus so it reaches the fallopian tubes from where it will meet the egg and fertilize. The ATPs are found in the many mitochondria organelles in the sperm are used to generate the required energy to swim and breach the walls of the egg during fertilization.
Answer:C sperm
Explanation:
B. like discs.
C. spherical.
D. long and stringy.
Answer:
The correct answer would be option A. half moon shaped.
Explanation:
Sickle-cell anemia is a genetic disorder in which normal blood cells become rigid or stick and look like a crescent moon or half moon shape. In sickle-cell anemia condition, there are not sufficient healthy red blood cells or RBCs to carry enough oxygen throughout the body.
In sickle-cell anemia, the mutation causes a single change in the amino acid of hemoglobin, the building block of oxygen-transport protein. The alpha and beta subunits are the two subunits of hemoglobin. In sickle cell anemia, the beta subunit has valine at position 6 instead of glutamic acid that is present in normal hemoglobin.
Thus, the correct answer is option A. half moon shaped.
I believe the answer is C
Answer:
This process is normal in all multicellular organisms, if one cell dies because it is old, another one is born to replace it.
Explanation:
This process is called cell death and is the cycle of life throughout the earth a very clear example is human hair, daily hair falls out but at the same time you grow again, the problem would be when cell death began very fast and not replaced by new cells accordingly we would have diseases such as necrosis
The basic requirements for a thunderstorm to form are moisture, lifting, and instability. The correct option is B.
A thunderstorm, also widely recognized as an electricalstorm, is a category of a storm that is distinguished by the involvement of lightning and its acoustic effect on the Earth'satmosphere, which is known as thunder.
A thunderstorm requires three basic ingredients to form: moisture, rising unstable air, and a lifting mechanism to provide the "nudge."
Thus, the correct option is B.
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Answer:
B
Explanation:
Answer:
Human activities have adversely affected the ecosystem because human needs wood for making houses so they cut the trees and the organisms lives there loss their habitat and whole ecosystem is disturbed. Tropical forest is also called lungs of planet earth because they provide oxygen to the atmosphere and absorbs carbondioxide gas in large amounts. About half of world species lives in these forest. If humans continue to cut these forest all the species lives their will be vanished and affected the whole world.
Answer:
Volcanoes is one particular kind of feature that forms along convergent plate boundaries, where two tectonic plates clash (collide) and one moves below the other.
Explanation: