If an object were collected on Mars by the rover Curiosity, it would be considered a living organism if it ________
A) responded to environmental stimuli
B) had metabolic activities and maintained homeostasis
C) contained DNA and reproduced
D) All of the above are true.
D
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Which of the following is an important role for fungi in the carbon cycle?
A) Fungi release fixed carbon back to the environment for other plants and photosynthetic organisms to utilize. B) Fungi provide fixed carbon to plants for the production of plant cellular tissues. C) Fungi fix carbon by undergoing photosynthesis. D) Fungi reduce atmospheric carbon dioxide.
Explain how dicer and miRISC are involved in the production and function of miRNAs
What will be an ideal response?
The type of cells that are particularly effective at attacking body cells infected by viruses are
A. macrophages. B. natural killer cells. C. monocytes. D. eosinophils.
Which of the following describes the pathway for blood flow through the systemic circulation?
What will be an ideal response?