Which type of RNA shows enzymatic activity by catalyzing a peptide bond formation between amino acids?
a. mRNA
b. tRNA
c. rRNA
d. all types of RNA
e. no RNA shows enzymatic activity
c
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The following are all main points of the article Seaweeds and Medicine, except:
a. Seaweeds have been used for thousands of years for therapeutic purposes. b. Vitamin C, iodine, and agar are substances found in seaweeds. c. Phycocolloids are used in the pharmaceutical and biomedical industries. d. It is extremely expensive to extract useful substances from seaweeds.
Identify the primary role of the lymphatic system
A) Distribution of hormones to the body B) Delivery of oxygen to the deep muscle cells C) Produce and store large numbers of white blood cells D) Filter out cellular wastes from the blood
Which structure in the cell shown in Figure 7-2 above stores materials, such as water, salts, proteins, and carbohydrates?
A. Structure A B. Structure B C. Structure C D. Structuree DGolgi Apparatus B. mitochondrion
The lagging strand is replicated with a series of Okazaki fragments and that is why its synthesis is considered to be
A. antiparallel. B. semiconservative. C. bidirectional. D. continuous. E. discontinuous.