What is the main purpose of flowers?

A) To attract pollinators
B) To be pleasing to the human eye
C) To attract attention in the landscape
D) To attract predators


A

Biology & Microbiology

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Activator proteins bind to silencer sequences and repressor proteins bind to enhancer sequences

Indicate whether the statement is true or false

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Negative staining facilitates the visualization of bacterial capsules that are intensely stained by the procedure.

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

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For some human traits, two possible alleles exist. For other traits, multiple (more than two) alleles for the trait are present in the population. Which of the following is an example of a trait controlled by multiple alleles?

A) albinism B) blood type C) hemophilia D) color blindness

Biology & Microbiology

What makes phospholipid membranes good at keeping some molecules out, and allowing others to freely pass?

a. They are positively charged. b. They are completely hydrophobic. c. They are completely hydrophilic. d. They have both hydrophilic and hydrophobic regions.

Biology & Microbiology