Exam (elaborations)
Biology 1441 Exam 1 Review
- Course
- BIOL 1441
- Institution
- University Of Texas - Arlington
Biology 1441 Exam 1 Review
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Biology 1441 Exam 1 ReviewHow do you find the atomic mass of an atom? Correct Answers
add protons and neutrons
If a strand of DNA has the nitrogen base sequence 5'-ATTTGC-
3', what will be the sequence of the matching strand? Correct
Answers 3'-TAAACG-5' (A and T pair together, G and C
together in DNA; if it starts with 5, the complimentary strand
starts with 3, vice versa)
If an ion has twelve protons, thirteen neutrons, and a charge of
2+, what is the atomic number? Correct Answers 12 (bc atomic
number is dependent on amount of protons)
If two atoms are bonded together and they have an
electronegativity difference of 0.2, what type of bond is it?
Correct Answers nonpolar covalent bond
Phospholipids are made of heads and tails. Which is
hydrophobic and which is hydrophilic? Correct Answers
Hydrophobic: tails
Hydrophilic: heads
Sulfur has an atomic number of 16. How many electrons are
going to be in each shell? Correct Answers the first electron
shell has 2, the second shell has 8, and the third shell has 6
What are dehydration reactions? Correct Answers a water
molecule is formed in dehydration synthesis and makes a large
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