Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
Explanation:
B) oxygen
Respiration is defined as the movement of oxygen from the outside air to the cells within tissues
This cell division is called mitosis, and it takes place during the last four phases of the cell life cycle: Prophase,Metaphase, Anaphase, and Telophase. The purpose of mitosis is to copy the genetic material so that whenTelophase has ended, the result is two genetically identical cells.
Answer:
Option D
Explanation:
Options for the question are -
a) “I will call the doctor if my incision becomes swollen and red.”
b) “I will check my pulse every day and report to the doctor if the rate is below the pacemaker setting.”
c) “I will avoid any large magnets that may affect my pacemaker.”
d) “We will be getting rid of our microwave oven so it will not affect my pacemaker.”
Solution -
The statement as stated in option D signifies the lack of knowledge of patient about the pacemaker and precautions to be taken while using it.
In general all the pacemakers have efficient mechanism to protect the device from electrical disturbance received from other electrical device specially the household devices such as refrigerator, heater, motors, microwave etc. However, protection is required from magnetic fields and magnets. Thus option C is a correct statement. Option A and B depict valid general precautions and check to be taken care of while using pacemaker.
Option B. A man pushes a couch across the room is the answer.
