Reference no: EM132452745
Question 1: A balloon permeable to water but not to glucose contains a 10% glucose solution. A beaker contains a 5% glucose solution. Which of the following is true?
- The solution in the beaker is hypertonic relative to the solution in the balloon.
- The solution in the balloon is isotonic; the solution in the beaker is hypertonic
- When placed in the beaker, the balloon will lose water by osmosis.
- The solution in the balloon is hypertonic relative to the solution in the beaker.
Question2: Relaying a message from a receptor protein to a molecule that performs a specific function within a cell is called:
- signal transduction.
- inhibition.
- self-recognition.
- selective permeability.
Question 3:Microtubules are associated with:
- cilia.
- flagella.
- cell shape.
- All of the above
Question 4 Usually, enzymes are:
- fats.
- steroids.
- chemical reactions.
- proteins.
Question 5 Which of the following processes could result in the net movement of a substance into a cell, if the substance is more concentrated in the cell than in the surroundings?
- Active transport
- Facilitated diffusion
- Diffusion
- Osmosis
Question 6 Substances that plug up an enzyme's active site are:
- enzyme substrates.
- enzyme inhibitors.
- induced fit factors.
- enzyme products.
Question 7 Functions of the smooth endoplasmic reticulum include:
- steroid synthesis, protein synthesis, and drug detoxification.
- lipid synthesis, protein synthesis, and drug detoxification.
- lipid synthesis, steroid synthesis, and drug detoxification.
- lipid synthesis, steroid synthesis, and protein synthesis.
Question 8 If placed in tap water, an animal cell will undergo lysis, whereas a plant cell will not. What accounts for this difference?
- Expulsion of water by the plant cell's central vacuole
- The relative impermeability of the plant cell membrane to water
- The relative impermeability of the plant cell wall to water
- The relative inelasticity and strength of the plant cell wall
Question 9 The endomembrane system includes:
- ribosomes, lysosomes, vacuoles, and the endoplasmic reticulum.
- Golgi apparatus, ribosomes, vacuoles, and the endoplasmic reticulum.
- Golgi apparatus, lysosomes, ribosomes, and the endoplasmic reticulum.
- Golgi apparatus, lysosomes, vacuoles, and the endoplasmic reticulum.
Question 10 Tobacco smokers (and those exposed to tobacco smoke) are at greater risk of an ectopic (tubal) pregnancy. Based on your understanding of the structures of the cytoskeleton, what is the best explanation?
- Tobacco smokers tend to get pregnant when they are younger.
- Tobacco interferes with the functioning of the flagella propelling sperm.
- Tobacco interferes with the transfer of oxygen to the uterus, thereby forcing the zygote to implant in a fallopian tube.
- Tobacco interferes with the sweeping motion of cilia that aids in the movement of the egg toward the uterus.
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