Which of these features is found in both nonvascular and vascular plants?
a. lignin
b. roots
c. cuticle
d. xylem
e. phloem
ANSWER: c
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In a contracted sarcomere, ____
a. there is little overlap of actin and myosin b. the Z lines are close together c. the sarcomere length has increased d. power strokes are inhibited e. the overall muscle is relaxed
Which of the following clusters of terms accurately describes DNA as it is generally viewed to exist in prokaryotes and eukaryotes?
A) double-stranded, parallel, (A + T)/(C + G) = variable, (A + G)/(C + T) = 1.0 B) double-stranded, parallel, (A + T)/(C + G) = 1.0, (A + G)/(C + T) = 1.0 C) double-stranded, antiparallel, (A + T)/(C + G) = variable, (A + G)/(C + T) = variable D) double-stranded, antiparallel, (A + T)/(C + G) = variable, (A + G)/(C+ T) = 1.0 E) single-stranded, antiparallel, (A + T)/(C + G) = 1.0, (A + G)/(C + T) = 1.0
Endospore-forming Gram-positive bacteria are found primarily in ________ habitats.
A. marine B. freshwater C. soil D. All of the choices are correct.
When a patient's immune system reacts adversely to a drug, this serious side effect is called a superinfection.
Answer the following statement true (T) or false (F)