a buffer, A solution that can receive moderate amounts of either acid or base without a significant change in ph
Answer:
The average speed is 60 miles per hour or 1 mile per minute.
Explanation:
If you multiply 30 by 2 to find the miles per hour, you also have to multiply 30 miles by 2. This results in 60 miles per hour. If you want to find the miles per minute, you divide the 30 minutes by 30. You have to do the same to the miles, so the average speed could also be 1 mile per minute.
Answer: B. on the surfaces of organs, on the walls of cavities, on the outer surface of the body, and in glands of the body.
Explanation:
The epithelial tissues are the tissues that are present throughout the parts of the body. They form the covering of the body surfaces. It helps in lining the body cavities and organs. It forms the major tissues of the glands.
These tissues are important as they perform diversity of functions in the body. Such as protection, absorption, secretion, filtration, excretion, sensory reception and diffusion.
Answer:
The statement that is false is C 'it protects the cell in a hypertonic environment'.
Explanation:
The cell wall has no role in protecting a cell in any of the hypertonic or hypotonic environments. In an hypertonic environment, water will flow out of the cell due to the concentration gradient developed and this phenomenon cannot be stopped by any kind of cell wall.
The gram positive cell wall is involved in maintaining the shape of the cell. Studies have also shown the gram- positive cell wall to be sensitive towards lysozyme. Techoic acids are actively present in a gram-positive cell wall. Also, many researches have explained that gram- positive cell wall is sensitive to the antibiotic penicillin. Hence, the statement that is not correct is C "it protects the cell in a hypertonic environment."
Answer:
The neuron will fire an action potential.
Explanation:
A neuron is a cell in the brain that transmit signals to other nerve cells.
The depolarization of a neuron occurs when the neuron moves to a cell membrane with a more positive value which makes it more likely to fire an action potential.
