DNA is present in all human cells, except the red blood cells, that is because <span>RBCs do not contain the organelle nucleus or any other DNA containing organelle.</span>
It is the second step in the scientific method, where you ask a question and propose a hypothesis to be answered through a series of scientific tests.
Answer:
C. All cells are surrounded by a cell membrane and a rigid cell wall.
Explanation:
All cells have these four parts in common: a plasma membrane, cytoplasm, ribosomes, and DNA. Plasma membrane - also known as cell membrane.That's because all cells are surrounded by a structure called the cell membrane — which, much like the walls of a house, serves as a clear boundary between the cell's internal and external environments. The cell membrane is sometimes also referred to as the plasma membrane.
Answer: These are the options.
A. Calf
B. Chest
C. Upper Back
D. March and Reach
Option C is correct
Upper back stretch.
Explanation:
Upper back stretch is an example of static stretch because it entails placing your muscles in a position where it can be stretch or extended for a period of time because it lengthen the stride and also improve flexibility of muscles.
To do upper back stretch, first stand talk, let the feet be very wide even than the shoulder, let the knees be apart and bent. Interlock your fingers, stretch your hands from your chest and make sure your upper back relax.