Both phase-contrast microscopy and differential interference contrast microscopy are used to view the internal structures of cells without staining
Indicate whether the statement is true or false
TRUE
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The semi-fluid matrix that surrounds organelles in a cell is called the:
A. stroma. B. nucleoplasm. C. ribosome. D. cytoplasm.
A neurologist diagnosis a patient with damage to the hippocampus. This observation is consistent with the difficulties the patient reports with
A. forming memories of recent events. B. effectively coordinating movements once initiated. C. planning movements. D. maintaining a steady and regular heartbeat. E. perceiving tactile stimulation from different regions of their body.
Which is the correct horizontal pathway of water from the soil to the center of the root?
a. epidermis ? root hair ? cortex ? pericycle ? endodermis ? xylem b. epidermis ? cortex ? pericycle ? endodermis ? phloem ? xylem c. root hair ? epidermis ? cortex ? endodermis ? pericycle ? xylem d. root hair ? cortex ? endodermis ? pericycle ? epidermis ? xylem e. root hair ? epidermis ? endodermis ? cortex ? xylem ? phloem
Isotopes of an element have the same number of ________ and different numbers of ________
A) protons... neutrons B) protons... electrons C) neutrons... protons D) electrons... protons