Prokaryotes belong to ________
a. Kingdom Plantae.
b. Domain Archaea.
c. Kingdom Protista.
d. Kingdom Animalia.
e. Domain Eukarya.
Ans: b. Domain Archaea.
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The evolutionary trend of bipedalism refers to the:
a. walking that involves supporting weight on knuckles b. the ability to habitually walk on two feet c. use of two hands to swing through the trees as monkeys do d. development of a prehensile hand e. use of feet as well as hands for grasping
An sRNA is isolated from a bacterial cell. What would you do to determine whether it is a cis-encoded or a trans-encoded sequence?
A. Find out if the sRNA acts as a transcriptional or as a translational inhibitor. B. Determine whether the sRNA binds to mRNA or to tRNA. C. Analyze the molecular position of hydrogen atoms in the sRNA nucleotides. D. Identify whether or not the sRNA sequence is complementary to the coding strand of mRNA gene target.
Which of the following statements regarding Ulva is true?
A) Ulva, a brown algae, resembles land plants because it produces diploid gametes. B) Ulva, a brown algae, has a complex life cycle with diploid body cells and haploid gametes. C) Ulva, a green algae, has a complex life cycle with diploid body cells and haploid gametes. D) Ulva, a green algae, has a complex life cycle with alternation between multicellular diploid and haploid generations.
Answer the following questions true (T) or false (F)
1. Even though rubella is a mild, self-limiting disease, vaccination remains important to prevent severe neurological damage to babies whose mothers are exposed to rubella in utero. 2. Methicillin-resistant Staphylococcus aureus (MRSA) cause the same infections as non-resistant S. aureus stains; however, the bacterium has evolved cell-wall building enzymes which do not bind with methicillin and other beta-lactam antibiotics. 3. Because pseudomonads are widespread in the environment and are versatile in their metabolic capabilities, skin infections with these bacteria are common even in healthy people with no skin breaches.