In the mitochondria, hydrogen is actively pumped to the ____

a. inner membrane
b. outer membrane
c. intermembrane space


d. matrix
e. cytoplasm


ANSWER: c

Biology & Microbiology

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Three scientists are using different forms of PCR for their research. Abby wants to determine changes in gene expression levels in a tissue, so she uses ________. Bob is trying to extract genetic information from a wooly mammoth fossil, so he uses ________. Chris needs to express a gene in bacteria that matches the form expressed in kidney cells, so she uses ________.

A. quantitative RT-PCR;  PCR;  RT-PCR B. RT-PCR;  quantitative RT-PCR;  PCR C. RT-PCR;  PCR;  quantitative RT-PCR D. quantitative RT-PCR;  RT-PCR;  PCR E. PCR;  quantitative RT-PCR;  RT-PCR

Biology & Microbiology

Because the fossil record is now complete, it provides compelling evidence to support the theory of evolution

Indicate whether the statement is true or false

Biology & Microbiology

The ________ portion of the cell membrane is responsible for the isolating function of the membrane, whereas the ________ portion regulates exchange and communication with the environment

A) nucleic acid; lipid B) protein; cholesterol C) lipid; protein D) carbohydrate; lipid E) cholesterol; lipid

Biology & Microbiology

Toxic shock syndrome (TSS) is associated with

A) Pseudomonas aeruginosa. B) Staphylococcus aureus. C) Streptococcus pyogenes. D) Neisseria meningitidis. E) both Staphylococcus aureus and Streptococcus pyogenes.

Biology & Microbiology