Two chromosomes get arranged on the metaphase plate and are attached to the complete spindle.
Answer: A. The onion cells have lysosomes, and the cheek cells do not.
Explanation:
Answer:
D) cardiovascular system, interstitial fluid, lymph, cardiovascular system
Explanation:
1) Fluid drain from cardiovascular system into extracellular spaces bathing and providing the nutrients to cells (Interstitial fluid).
2) The fluid collects the waste products and drains into the lymphatic vessels as lymph.
3) The lymphatic ducts empty into subclavian vein to return to blood circulation.
Answer:
Myelination
Explanation:
The covering of myelin around the axons is called the myelin sheath. This myelin sheath helps in transfer of information faster and also in complex processes of the brain. The process of myelination begins in the PNS (peripheral nervous system).
The myelinated section are seperated from each other with a gap called nodes of ranvier. Glial cells (oligodendrocytes) forms the myelin sheath in the central nervous system and schwann cells (glial cells) forms the myelin sheath in peripheral nervous system. The propagation of electrical impulse in the myelinated fibers is by saltatory conduction that is from one node to another.
Assuming this is multiple choice, the answer would be "niche". An organism's niche is where that certain organism fits into an ecosystem, or what their part to play is.
