When members of a species become separated by geography and lose the ability to interbreed, how would scientists classify them?

A. subpopulation

B. two separate species

C. one species

D. subspecies

Which is an abiotic factor of an ecosystem? A. temperature B. tree C. owl D. tick

What effects did the introduction of the nutria have on ecosystems throughout the U. S.?

Responding to the environment by maintaining a stable environment despite changing external conditions is

When eaten, nearly 90% of our dietary calories from fat are in the form of?

The calm areas near the equator where warm air rises are___ A. horse latitudes B. trade winds C. doldrums D. polar easterlies

Read the list of common household substances. Antacid, orange juice, toothpaste, vinegar Which of these substances are likely to have a bitter taste? Antacid, vinegar Antacid, toothpaste Orange juice, vinegar Orange juice, toothpaste

Which of the following do fish NOT use to breathe? A. air bladder B. pharyngeal slits C. pores on their back D. olfactory bulbs

Imagine a protein that has been engineered to contain a nuclear localization signal, a nuclear export signal, a C-terminal peroxisomal targeting sequence, and a canonical endoplasmic reticulum (ER) signal sequence.

Which organelle receives protein from endoplasmic reticulum and sorts and packages it for delivery outside cell?

Eukaryotic cells have many different specialized structures that are involved in making, organizing, and delivering a protein molecule. Describe the four organelles that are involved and the sequence of events of this process.