Which of the following organisms are prokaryotes?

plants

bacteria

animals

fungi

How many chromosomes do people with down syndrome have?

Which statement describes a similarity between asexual reproduction and sexual reproduction? Both processes involve fertilization Both processes involve cell division Both processes produce genetically identical offspring.

If these organisms were arranged in an ecological pyramid, which level would retain the least usable energy from the Sun?

Which describes a similarity between abiotic and biotic factors? A. They may include things that where once living. B. They are both necessary for organisms to survive. C. They are not usually important parts of the environment. D.

Which two organelle are found in plant cells but not in animals cells

Jon is researching the oxygenation of Earth's atmosphere. Which unicellular organism do biologists consider to be the main contributor to that process? A. paramecia B. amoebae C. dinoflagellate D. cyanobacteria Answer is D. cyanobacteria

If you apply a stain for cellulose to a section of celery stem, where would you expect to see color in the cells?

What is the ultimate source of energy of almost any terrestial (land) food chsin or food web? what process converts this energy into a uasble form

Which does the enzyme need to be fully functional

Peritoneal organs are completely covered in a serous membrane and have a dorsal and ventral mesentery.