Where in the DNA molecule are hydrogen bonds?
a. between sugars
b. between phosphates
c. between sugar and phosphate
d. between bases
e. in the backbone
ANSWER: d
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Answer the following statements true (T) or false (F)
1. Bacterial cells always contain one copy of a circular chromosome. 2. Bacteria can exchange DNA between strains of the same species and between different species. 3. Viroids have a genome but do not translate any of it to protein. 4. All forms of horizontal gene transfer require both the recipient and donor bacteria to be alive.
Motor neurons serving smooth and cardiac muscle are part of the somatic nervous system.
a. true b. false
The chromosomal structure that anchors the spindle fiber to the chromosome is known as the
____________________. Fill in the blank(s) with the appropriate word(s).
Small, hydrophobic molecules pass through a cell membrane most easily by diffusion
Indicate whether the statement is true or false