Most of Earth's mass of living organisms consists of which of the following?

What will be an ideal response?


Plankton

Biology & Microbiology

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?-galactosidase is used in bacterial screening assays for visualization of colonies that contain recombinant DNA. What

is its substrate?

a. lactose b. X-gal c. sucrose d. lacZ e. agarose

Biology & Microbiology

Break down of the corpus luteum coincides

with a ____ levels if pregnancy does NOT occur. a. decline in chorionic gonadotropin b. decline in LH c. surge in progesterone d. spike in LH e. spike in extrogen

Biology & Microbiology

Genomic imprinting is caused by epigenetic changes to DNA Indicate whether the statement is true or false

Biology & Microbiology

Answer the following questions true (T) or false (F)

1. The genome of all DNA animal viruses is replicated in the nucleus of the cell. 2. Bacteriophage release is a gradual process in which small numbers are released at a time. 3. Bovine spongiform encephalopathy is an example of a prion disease.

Biology & Microbiology