The given question says that a student has constructed a model of cellular transport using fences and several gates.
This model can be used to demonstrate the cellular transport.
The gates of the fences can be supposed as the protein pumps and the other fence demonstrates the lipid bilayer.
Let’s suppose in the fence, there are many cattles, and outside, there are less cattles, but the student open the gate and bring more cattles inside the fence. In this case, the transport of the cattles is similar to the active transport of the molecules using protein pumps. At cellular level, the energy for the active transport is provided by ATP molecules.
Now, let’s say, the student wants to feed the cattles with some nutrition rich food, which can help in maintaining the health of the cattles. The student fills his car with the cattle food and he enters inside the fence through gates. In this case, the food was not present in the fence, but was abundant in the outside environment, so, the diffusion would occur. But food cannot come self, without help of others, so, the movement is facilitated by the car, as it is done by the carrier proteins. Hence, it is an example of facilitated diffusion.
Answer:
D.
Explanation:
Soil formation takes a while, so it already being formed takes away alot of time. Hope this helps.
Changes to the drug may be helpful if it turns out that one is the source of the problem. Mechanical aids: Penile implants and vacuum devices may be able to assist males with erectile dysfunction (the inability to achieve or maintain an erection).
Any stage of the sexual response cycle is susceptible to sexual dysfunction. You are unable to enjoy sexual activities to your delight.
The classic stages of the sexual response cycle include anticipation, plateau, climax, and resolution. Both arousal and desire are a part of the sexual response's excitement phase. It's vital to understand that women don't always experience these phases sequentially.
The Sexuality Information and Education Council of the United States (SIECUS) states that a sexually healthy teen demonstrates or has the following characteristics in their interactions with classmates, parents and other members of their family, as well as other close friends and intimate partners.
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You can make a table with each sun/star and plot them by color/heat. I hope this helps!
