Root systems that are adapted to absorb water and nutrients from the upper layers of soil are called

a. adventitious root systems.
b. prop root systems.
c. fibrous root systems.
d. taproot systems.
e. storage root systems.


C

Biology & Microbiology

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For a temperate phage to produce more phage, which of the following must happen?

A. Lysogeny B. Lysogenic conversion C. Induction D. Prophage formation

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In prokaryotes, which of the following types of regulation will NOT occur?

a. chromatin remodeling b. variations of mRNA turnover c. variations in protein turnover d. activation of promoters e. regulation of transcription

Biology & Microbiology

Gene flow

a. has a homogenizing influence on a population. b. speeds up the divergence of two populations. c. increases the genetic variation between populations. d. is promoted by isolating mechanisms. e. promotes inbreeding.

Biology & Microbiology

In humans, the genetic basis for determining the sex "male" is accomplished by the presence of ________

A) high levels of estrogen B) a balance between the number of X chromosomes and the number of haploid C) a portion of the Y chromosome D) multiple alleles scattered throughout the autosomes E) one X chromosome F) sets of autosomes

Biology & Microbiology