The correct answer would be phenotypic variation.
1. Contraction
2. Actin
3. Tendons
4. Epidermis
5. Dermis
6. Acne
7. A nerve signal from the brain arrives at the intersection of the nerve and muscle cells and releases acetylcholine from the neuron. This triggers chemical changes in the muscle cell involving ions, including Ca2+. Calcium triggers the thick filaments, made of myosin, to attach to the thin filaments, made of actin, in the muscle cell, and the myosin pulls the actin toward the center of the muscle cell. ATP causes the release of the actin fibers, allowing the muscle to relax and the process to begin again.
For Penn Foster.
Answer:The answer Is Eubacteria
Explanation: I took the test ahaha :) Hope This helps.
Answer: D - Eukaryotic
Explanation: Can not be A, B or C
- Prokaryotic cells can not make up multicellular organisms
- Bacterial cells are prokaryotes and unicellular
- Not all multicellular organisms are plants and are therefore not all made of plant cells
Answer:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.
Explanation:
