Match the following items with the correct phrases.
_______1. _______________ are chemical mediators that enable cells to communicate with each other.
_______2. When attached to the surface of particles or cells, ____________________ can facilitate phagocytosis.
_______3. Proteins produced by one bacterial species that kill other bacterial species are known as ____________________.
_______4. ____________________ are small, antiviral proteins that are produced by virus-infected cells.
_______5. ____________________ attract leukocytes to sites where they are needed.
a. bacteriocins
b. chemotactic agents
c. complement fragments
d. cytokines
e. interferons
1. d. cytokines
2. c. complement fragments
3. a. bacteriocins
4. e. interferons
5. b. chemotactic agents
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Egg and sperm cells are ____
a. sporophytes b. gametes c. gametophytes d. diploid e. somatic cells
Which organelles are produced by the nucleolus?
a. Golgi bodies b. lysosomes c. ribosomes d. peroxisomes e. centrosomes
In the first stage of a monohybrid experiment, two _____ are crossed.
A) parents phenotypically different for two traits B) individuals from the F1 generation C) homozygous parents differing in a trait controlled by one gene D) homozygous-dominant parents
Kleckner and coworkers discovered a protein bound to the 5' termini of double-stranded breaks
In their effort to purify and identify this protein, what did they do to amplify the signal (enrich the number of covalently bound complexes), and which protein did they ultimately purify? What will be an ideal response?