Podcast
Questions and Answers
What is the most important characteristic of a water-insoluble substance in governing its diffusibility through a cell membrane?
What is the most important characteristic of a water-insoluble substance in governing its diffusibility through a cell membrane?
- Electrical charge
- Molecular weight
- Hydrated diameter
- Lipid solubility (correct)
Why are mitochondria usually the most abundant organelles in the cell?
Why are mitochondria usually the most abundant organelles in the cell?
- Mitochondrion is the control center of the cell
- Digestive enzymes are contained within the mitochondria
- These structures shuttle proteins and other substances between the E.R. and Golgi apparatus
- Practically all cellular processes require ATP as an energy (correct)
How are simple diffusion and facilitated diffusion alike?
How are simple diffusion and facilitated diffusion alike?
- Can work in the absence of ATP
- Require some carrier mechanism for transport (correct)
- Can transport material against a concentration gradient
- Display saturation kinetics
Which one of the following accomplishes secondary active transport?
Which one of the following accomplishes secondary active transport?
Which of the following is NOT part of the extracellular fluid compartment?
Which of the following is NOT part of the extracellular fluid compartment?
Which body fluid compartment would represent about 40% of the body weight?
Which body fluid compartment would represent about 40% of the body weight?
In a muscle fiber, what is the main function of tropomyosin?
In a muscle fiber, what is the main function of tropomyosin?
In smooth muscle, which of the following plays a role in the regulation of contraction?
In smooth muscle, which of the following plays a role in the regulation of contraction?
As the Na-K pump functions in a neuron membrane, how many Na ions are pumped out for every K ion pumped in?
As the Na-K pump functions in a neuron membrane, how many Na ions are pumped out for every K ion pumped in?
Stimulation of the parasympathetic portion of the autonomic nervous system causes:
Stimulation of the parasympathetic portion of the autonomic nervous system causes:
The neuronal centers for regulating visceral functions particularly coughing, respiration, blood pressure, and heart rate are in the:
The neuronal centers for regulating visceral functions particularly coughing, respiration, blood pressure, and heart rate are in the:
Which play an important role in determining the orientation of the head?
Which play an important role in determining the orientation of the head?
Flashcards are hidden until you start studying
