Which of these is not a characteristic of saturated fats?
A) They are liquid at room temperature.
B) Every carbon atom is attached to the maximum number of hydrogen atoms.
C) Only single hydrocarbon bonds are present.
D) They pack tightly together.
E) They are found in meat and eggs
A) They are liquid at room temperature.
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Molecular oxygen (O2), which is required for the production of ATP by mitochondria, must pass through at least three membranes to get to the enzymes where it is used
O2 is also produced in chloroplasts and must pass through at least four membranes to be released from the plant. How does O2 move across biological membranes? A. There are numerous protein transporters that allow O2 to travel across membranes. B. O2 is nonpolar, and very small, so it can diffuse across the membrane. C. O2 undergoes a chemical reaction that binds it to other substances that are transported across the membranes. D. O2 is hydrophilic and travels with water across the membranes.
__________ allow animals of the same species to share information Fill in the blank(s) with the appropriate word(s)
erection is
What will be an ideal response?
Which of the following are true about ecosystems? (Check all that apply.)A) They contain both living and nonliving components.B) There is a transfer of energy through the system and some energy is lost as heat energy.C) Nutrients repeatedly cycle through the ecosystem.D) They represent the lowest level of biological organization.E) The ultimate source of energy for most ecosystems is the sun.
What will be an ideal response?