Green and brown algae share many common features. both have pigments for trapping sunlight and use photosynthesis for energy. both store their food as sugars. both have cell walls and plant-like bodies. however, their dna suggests that they are not even remotely related to one another. green algae and brown algae show evolution, since they look similar, but are not close relatives. a) convergent b) divergent c) homologous eliminate d) vestigial

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

Nucleic acids offer variability because they contain alternate forms of genes called .

Sperm are ejaculated from the corpora cavernosa of the penis. true or false