Answer:
In primary active transport, the energy is gotten directly from the breakdown of ATP. In the secondary active transport, the energy is gotten secondarily from energy that has been stored in the form of ionic concentration differences between the two sides of a membrane
When a highly nutritious crop is newly planted in an area where it has not been planted before, the effect is positive which can change the local biodiversity. This is because a nutritious crop cannot do any harm towards the area and the good thing is the area with no crop of this kind in the past can have new kinds after planting this.
Explanation:
Spermatogenesis and oogenesis are both forms of gametogenesis, in which a diploid gamete cell, sperm, and eggs respectively produces haploid cells through meiosis.
- Oogenesis takes place in the outermost layers of ovaries, it starts with a germ cell called oogonium, this cell will go under mitosis to increase in number, it will finish this division in a developing follicle with a secondary oocyte that will complete the meiosis if fertilized.
- In spermatogenesis meiosis begins with a primary spermatocyte, after this meiotic division a haploid cell is produced, this will be the secondary spermatocyte, this will result in four sperm from each spermatocyte that goes through meiosis, they are in an inactive state until gonadotropic hormones activate them during adolescence.
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I added images for both processes!
The answers are B, B, A, And D
Answer: They are multicellular
Explanation: