A scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bonds. Which level of structural arrangement is s/he looking at

If plants were removed, what effect would that have on the carbon cycle

Which part of the nervous system is outside the brain and spinal cord? nervous system

The only unpaired connective tissue structure of the diaphragm is:

What is used to express ocean salinity

The diagram below shows the chemical structure of a type of lipid molecule called a phospholipid. Atoms of five different elements make up the phospholipid molecule. Besides phosphorus, identify two other elements in the phospholipid.

Termites are unable to digest some plant materials (iber) Termite stomachs contain bacteria that digest the fber in wood Which type of relationship does this describe?

If there are 50 kcal of energy in the tertiary consumer trophic level, how many kcal would you expect to find in the primary consumer level

Both photosynthesis and cellular respiration are part of the carbon cycle. Which statement best compares these two processes? a) Both release carbon dioxide as waste. b) Both provide organisms with usable energy. c) Both add bacteria to the soil.

What is phosphorus found in?

Which group of organisms is most closely related to Archeabacteria? a. animalia b. fungus c. plantae d. protista