Which of the following statements is false?

-DNA can be found within the nucleus of an animal cell.
-Plant cells do not have DNA within the nucleus
-Bacteria are unicellular organisms that lack a nucleus.

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million

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