The movement of sucrose and H+ into the cell by the same membrane protein reflects the actions of what type of transporter?

A. voltage-gated channel.
B. mechanosensitive channel.
C. uniporter.
D. symporter.
E. antiporter.


D. symporter.

Biology & Microbiology

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Which of the following is incorrect about complement?

A. It involves an alternate pathway. B. It involves a classical pathway. C. It is composed of at least 20 blood proteins. D. It only appears in the blood during a response to a pathogen. E. It acts in a cascade reaction.

Biology & Microbiology

What is the monomer of the DNA molecule?

A) Polynucleotide B) Monosaccharide C) Nucleotide D) Peptide

Biology & Microbiology

In a reflex such as the "knee jerk" or patellar reflex, the efferent signal travels through the:

A) spinal cord. B) sensory neuron. C) interneuron. D) motor neuron.

Biology & Microbiology

Which is NOT a disease caused by a parasitic helminth?

a. leishmaniasis b. onchocerciasis c. schistosomiasis d. trichinosis

Biology & Microbiology