The water activity in foods that have high levels of salt or sugar is
A. high.
B. dense.
C. low.
D. osmotic.
C. low.
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Agave americana is a monocarpic plant (it has a single carpel). Once it flowers (reproduces), it dies
Although these plants can be very long-lived before flowering (10–30 years, on average), there is no continued growth after floral meristem replaces apical meristem tissues. The floral stalk can reach heights of more than 5 meters, and takes all the carbohydrate reserves of the plant. Based on your knowledge of plant growth and development, which of the following statements is a plausible explanation for death after flowering in A. americana? A. Once the floral meristem develops, auxin is no longer produced and only lateral meristems can grow. B. There are no lateral meristems in A. americana, so growth does not occur after flowering and the plant dies. C. There are no apical or lateral meristems in A. americana; the stalk only grows because of division and elongation of floral meristem. D. After flowering, an individual A. americana knows it has reproduced, so dies because it has ensured its inclusive fitness by contributing to the next generation.
Viruses acquire envelopes around their nucleocapsids during ________.
A. assembly B. replication C. release D. penetration E. adsorption
The DNA sequence ATGCATGC will pair with which of the following RNA strands?
A. CGAUCGAU B. AUGCAUGC C. UACGUACG D. UAGCTAGC
Which mammal is abale to snythesize all the vitman C (ascobic acid) it needs
A. human B. monkeys C. guinea pig D. dog E. all of the answer choice are correct