Which of the following processes requires both a carrier protein and energy?

A. facilitated diffusion
B. simple diffusion
C. active transport
D. osmosis


Answer: C

Biology & Microbiology

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An environmental testing laboratory is unable to identify a single-celled organism isolated from a well water sample. Inspection of the microorganism with a compound microscope reveals that it uses pseudopodia for movement and is not enclosed within a mineral shell. Based on this information, this organism can be classified to which supergroup?

A. Opisthokonta B. Alveolata C. Amoebozoa D. Rhizaria E. Excavata

Biology & Microbiology

The chromatin is

A) a liquid filling the nucleus. B) the entry and exit point for material into and out of the nucleus. C) a collection of DNA and protein. D) the site where ribosomal subunits begin their development. E) an organelle which is continuous with the nuclear envelope.

Biology & Microbiology

Match the following proteins to their function in DNA replication.

A. single-stranded binding proteins B. DNA helicase C. DNA primase D. DNA ligase E. DNA polymerase

Biology & Microbiology

An interaction between species in which one benefits and the other is essentially unaffected is ________

Fill in the blank(s) with correct word

Biology & Microbiology