Answer the following statements true (T) or false (F)
1. There could be as many as 100 trillion microorganisms that live on us and in us.
2. The most common organisms in the indigenous microflora of the mouth are various species of b-hemolytic streptococci.
3. Microbes cause thousands of different types of plant diseases.
4. Most relationships between humans and microbes are beneficial rather than harmful.
5. Beneficial microorganisms far outnumber harmful ones.
1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. TRUE
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Chemotaxis is a sensory response affecting the rotational direction of the flagellar motor
Indicate whether the statement is true or false.
Areas of the chromosome that remain highly condensed are called ______
A. Euchromatin B. Facultative heterochromatin C. Constitutive heterochromatin D. Barr body
A sea squirt uses its ____ for food collection and gas exchange
a. siphon b. pharynx c. tunic d. mantle e. radula
Which of the following arise from lateral meristem activity?
a) trichomes b) tubers c) leaves d) secondary xylem e) all of the above