Answer the following statements true (T) or false (F)
1. Bacterial conjugation is also called bacterial sex because there is an equal exchange of genetic information between two cells.
2. Plasmids can help bacteria grow faster.
3. The transfer of genes from dead bacteria to live bacteria is called transformation.
4. It has been difficult to create an effective vaccine against HIV because reverse transcriptase cannot correct its errors.
1. FALSE
2. TRUE
3. TRUE
4. TRUE
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Which of the following was the likely origin of chloroplasts?
a. cyanobacteria b. mitochondria c. extremophiles d. prokaryotes
A(n) ________ distribution refers to the proportion of individuals in the various age classes for any one year
Fill in the blank(s) with correct word
All atoms possess the ability to do work. The term that is defined as the ability to do work is
A. energy. B. space. C. molecules. D. matter.
In any DNA molecule, the number of guanine bases will:
A) always be equal to the number of thymine bases. B) always be equal to the number of adenine bases. C) always be equal to the number of cytosine bases. D) sometimes be equal to the number of thymine bases and will sometimes be equal to the number of adenine bases. E) sometimes be equal to the number of cytosine bases and will sometimes be equal to the number of adenine bases.