Which of the following groups contains the fewest number of species?
A) Kingdom
B) Phylum
C) Domain
D) Class
E) Order
E
You might also like to view...
Peroxisomes are examples of:
A. microbodies. B. ribosomes. C. chromosomes. D. nucleosomes. E. lysosomes.
Review Figure 19.15 below: Which one of the following statements about the lactose operon is not correct?
A. The lacZ coding sequence for - galactosidase and lacY coding sequence for lactose permease are genes called structural genes. B. lacO is a gene sequence coding for the operator. C. The promoter sequence recruits RNA polymerase complex and the initiation of transcription. D. lacI is a gene sequence coding for the repressor which binds to the operator, inhibiting transcription. E. The CRP-cAMP binding site promotes transcription of lactose operon genes if cAMP is high, which indicates that glucose is low and lactose metabolism is needed for energy production.
Place the following events of parturition in the correct order.
(1) Stretch-sensitive neurons send signals to the hypothalamus. (2) Oxytocin receptors increase in the uterus. (3) Prostaglandin levels increase. (4) Estradiol levels increase. (5) Oxytocin levels increase. (6) Uterine muscles start to contract. A. 1,2,4,5,3,6 B. 4,2,1,5,6,3 C. 5,2,4,1,3,6 D. 1,6,4,2,5,3 E. 4,3,1,2,5,6
Each of the following transfers DNA into bacteria except
A) conjugation. B) infection. C) transduction. D) transformation. E) All transfer DNA into bacteria.