5) what is true about the relationship of adenine and thymine?
a) adenine and thymine are a base pair.
b) adenine and thymine are antiparallel.
c) adenine and thymine form a covalent bond.
d) adenine and thymine are phosphates.

6) which of the following discoveries provided a critical clue watson and crick in solving the structure of dna
a) the hershey-chase experiment
b) griffith's transformation experiment
c) chargaff's base ratios
d) miescher's isolation of dna

10) describe how nucleotides and hydrogen bonds affect the structure of dna.

What is the process of pulling apart an n2 molecule nevermind i got it

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens

Analyze how the water cycle affects a food web. now list 3 examples for each below using complete sentences, on how too much water would affect the same web? how about to little water?