All antigens are immunogens
Indicate whether this statement is true or false.
FALSE
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Which of the following membrane proteins uses energy in the form of ATP to move molecules across the plasma membrane?
a. passive transporter b. active transporter c. receptor protein d. recognition protein
Planktonic foraminifera often have smaller photosynthetic protists such as diatoms or algae ____
a. living inside them b. living on their shell c. living near them on the ocean floor d. aiding in the building of their shell e. providing carbon dioxide for them
The large, ancient land mass that contained all
the continents is called a. Laurasia. b. Pangea. c. Gondwana. d. Atlantis. e. Europa
In the 1700s, Swedish scientist Carl Linnaeus developed the first comprehensive system for classifying living things. His system included two kingdoms—animal and plant. In the 1860s, scientists expanded this classification system to three kingdoms. The new kingdom included all single-celled organisms. What name did they give this third kingdom?
A) Plantae B) Bacteria C) Animalia D) Protista