An organism's genotype is its genetic makeup. An organism's physical traits are its phenotype

a. true
b. false


Answer: a. true

Biology & Microbiology

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Which organism is used to initiate the fermentation of cabbage to make sauerkraut?

A. Propionibacterium B. Saccharomyces cerevisiae C. Streptococcus lactis D. Spirulina E. Leuconostoc mesenteroides

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Short index fingers (shorter than the ring finger) are

dominant in males and recessive in females, whereas long index fingers (as long as or longer than ring fingers) are dominant in females and recessive in males. Give the F2 genotype and phenotype resulting from the cross of a male with long index fingers with a female with short index fingers. What will be an ideal response?

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What type of cell found in the skin and mucosal linings secretes histamine?

A) basophil B) monocyte C) dendritic cell D) macrophage E) mast cell

Biology & Microbiology

Organisms that thrive in extremely cold climates often produce proteins that act as "antifreeze". Given that all proteins bind to other molecules, how might such antifreeze proteins work?

A.) they bind to channels in the cell membrane, preventing water from seeping into or leaking out of cells B.) they bind to metal ions and each other, which attracts water molecules to form a thick gem that expands C.) they bind to proteins in the cell nucleus, promoting the expression of antifreeze genes D.) they bind by way of their beta sheets to tiny ice crystals, preventing their growth

Biology & Microbiology