A)
<span><u>proteins</u>
</span><span>Cell membranes contain membrane proteins that allows all the interaction that occurs within the cell. It makes the cell membrane selectively permeable because of its characteristics as being fluid or its fluidity which means to say that they can move freely within the lipid bilayer. The membrane proteins can also be stored in the lipid bilayer together with the enzymes. It cannot be denied that membrane proteins have a lot of functions based on its type. They can be integral proteins, peripheral proteins and lipid bound proteins. </span>
Answer:
i think the answer is c roundworms
Explanation:
i know im right becausee i made a 90% with this being right
In a cornfield, only one plant species has dominated the area, that is the corn plant. While in a natural meadow, multiple species of plants occurs of different species. The presence of the different types of plants in the meadow will interact more number of insects in it as compared to the corn field. This will lead to more interactions among the different species in a natural meadow. The greater biodiversity of the natural meadow than the cornfield will support it better.
In case of any natural disaster, or a pest attack, all the plants will be killed in a corn field and so will the insects dependent on them, but in a natural meadow, if one plant species is killed by a natural disaster, other will still be alive. Hence, the ability to survive is greater in natural meadow.
The formation of the fertilization envelope requires an increase in the cytosolic concentration of calcium ion .
<h3>What is fertilization?</h3>
The process of union of a haploid male gamete or sperm with a haploid female gamete or ovum to form a diploid cell ,zygote ,is called fertilization .
In human fertilization is internal as it takes place in the fallopian tube .
During coitus male discharge sperm to the vagina of the female , from the vagina sperm reach the ampulla partly by the movement of their tails and partly by the action of uterus .
After completing this long travels sperm reaches the fallopian tube within five minutes .
Learn more about fertilization here:
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