Which of the following is an application of immunofluorescence microscopy?
A) Visualization of the natural fluorescence of a specimen under UV light.
B) Identification of specific components of the immune system.
C) Identifying which organelle or cellular compartment contains a particular protein.
D) Visualization of the surface structures of a specimen.
E) Construction of three-dimensional images of structures smaller than 10 nm.
Answer: C
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Why are the components of the electron transport chain embedded in the inner mitochondrial membrane rather than floating freely in the cytoplasm of mitochondrial matrix?
A. To generate and maintain the proton gradient essential for ATP production. B. To separate the ATP from the ADP. C. Because electrons cannot float in the matrix. D. Because NADH cannot localize to the mitochondrial matrix.
Which molecule associated with photorespiration is toxic to plant cells?
a. 3PGA b. G3P c. phosphoglycolate d. glycolate e. rubisco
A behavior that can increase reproductive success of an individual male in a species is
A. All of the answer choices are correct. B. direct physical competition for the "right" to mate with a particular female. C. post-mating physical competition to block other males from subsequently mating with the female. D. the removal of the sperm from other males, so that there will be no successful fertilization. E. the ability to produce more sperm can be produced or released.
In a blood pressure reading such as 120/80, the lower number refers to the
1.Anastolic pressure 2.Diastolic pressure 3.Sinoatrial strength 4.Systolic pressure