Yellowstone national park the world's first national park is an example of

A) captive breeding

B) habitat preservation

C) habitat destruction

D) poaching

What are the specific functions of the placenta and umbilical cord?

If cells are constantly splitting, why aren't they getting smaller too? Half of a muffin is not as big as a whole muffin. When you split something it's going to be smaller than the original whole.

Most neurodegenerative diseases involve inability to remove misfolded/aggregated proteins. The cellular organelle that often fails in this context is: a. mitochondria b. nucleolus c. proteasome d. none of the above

A DNA molecule consists of two antiparallel strands of polynucleotides. Each strand is composed of nucleotides bound to each other along the sugar-phosphate backbone.

What is the purpose of vesicles

Scientists talk about the 6th Mass extinction happening right now. What is it and how is it different from the last 5?

Humans have 23 pairs of chromosomes. by contrast, chimpanzees have 24 pairs of chromosomes and lack any pair resembling the long human chromosome 2 pair;

Could a single cell extracted from a multicellular organism survive on its own, similar to the way the lone cell of a unicellular organism does? Why or why not?

Who is also known as father of genetics?

What do ion channels aid the movement of?