The bacterial chromosome is
A) usually circular.
B) found in a nucleoid.
C) found in a nucleus.
D) both circular and found in a nucleoid.
E) both circular and found in a nucleus.
D
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Roots and shoots are similar in that:
A. primary growth in both roots and shoots results from the apical meristem. B. actively growing roots are much thicker than stems. C. the root and shoot apical meristems are both covered by a protective cap when actively growing. D. new meristem in the roots and shoots develop from the pericycle. E. both roots and shoots contain a waxy band around their endodermal cells, protecting the vascular tissue.
During menopause, ____
a. estrogen levels rise b. menstruation increases c. ovulation ceases d. women experience chills e. weight loss is typical
You are excited because your lab is studying the first microorganisms retrieved from Mars! Interestingly, their genetic material consists of a single-stranded nucleic acid with six different nitrogenous bases. Like organisms from Earth, segments of the nucleic acid contain the code for making proteins. If the genetic code in these organisms was read in groups of 2 bases instead of 3, what is the maximum number of amino acids that could be coded for assuming that only one codon functioned as a stop codon? (Enter your answer as a numeral, not a word; e.g., enter 17, not seventeen.)
Fill in the blank(s) with the appropriate word(s).
Quantitative inhibitors in plants are toxic secondary compounds, often causing herbivores to avoid their consumption
Indicate whether the statement is true or false