One commonality is the ability to grow and reproduce through the production of new cells; cell division.
Answer: alternating dark and light bandsof protein filaments
Skeletal muscle fibers contain striations that can be described as alternating dark and light bands of protein filaments. Actin, tropomyosin, and troponin are among the protein filaments. The dark bands are the so-called A bands. Alternating light bands are referred to as I bands.
Biological molecule that act as a catalyst in many reactions.
Answer:
The correct option is B. It helps the fertilized egg attach to the uterine wall.
Explanation:
The uterus contains some of the strongest muscles of the body. It is made up of three thick layers:
1. The perimetrium 2. the myometrium and 3. the endometrium.
The walls of the endometrium thicken during ovulation and also pregnancy.
When fertilization occurs, the walls of the uterus help the eggs to stick to the uterine walls. The endometrium thickens more and more to protect the egg and to nourish it..
calcium transmission from one synapse to another
