Biology Forums - Study Force

During protein synthesis (translation):
 
  1.mRNA is translated in the Smooth Endoplasmic Reticulum.
  2.ATP is hydrolyzed to provide energy for forming peptide bonds.
  3.mRNA is converted into tRNA, which is then transformed into protein.
  4.mRNA, tRNA and amino acids are brought together at the ribosomes.
  5.None of these is correct.

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(Question 2) Transport vesicles carry secretory proteins from the smooth ER to
 
  1.the Golgi complex
  2.lysosomes
  3.secretory vesicles
  4.the nucleus
  5.the plasma membrane

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(Question 3) Lysosomes
 
  1.form by budding from the Golgi complex.
  2.contain 30 different oxidative enzymes.
  3.are smaller than peroxisomes.
  4.are intricately involved in translation.
  5.Both 1 and 2 are correct.

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(Question 4) Which of the following is not one of the body systems?
 
  1.Cardiac system
  2.Digestive system
  3.Circulatory system
  4.Nervous system
  5.Respiratory system

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(Question 5) Negative feedback:
 
  1.can never be used to maintain homeostasis.
  2.can only be used to maintain a constant body temperature.
  3.mechanisms oppose an initial change in the value of a monitored variable.
  4.mechanisms amplify an initial change in a monitored variable.

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(Question 6) Homeostasis:
 
  1.is the maintenance of a dynamic steady-state in the cellular environment.
  2.is a rigid, fixed state in the cellular environment.
  3.requires the reproductive system to be fully functional at the individual level.
  4.All of these are correct.

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(Question 7) Basic cellular functions include:
 
  1.sensing and responding to changes in the environment.
  2.obtaining nutrients from the environment.
  3.controlling the exchange of materials between the cell and the environment.
  4.All of these are correct.

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(Question 8) Physiology is the study of the:
 
  1.structure of living things.
  2.function of living things.
  3.chemical make-up of living things.
  4.development of living things.

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(Question 9) In your opinion, what do you think would be the most important factor structuring the density of a population of intertidal barnacles in Florida?
 
  1.sunlight
  2.temperature
  3.salinity
  4.competition for space

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(Question 10) Why are these Styrofoam elements distorted?
 
  1.sun exposure
  2.frozen and thawed
  3.exposed to pressure at depth
  4.none of these answers

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