To bring your specimen into focus when using the high power objective, which focusing knob should you use?
What will be an ideal response?
fine adjustment
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Which type of phosphorylation does not require a membrane?
A. Substrate-level phosphorylation B. Oxidative phosphorylation C. Photophosphorylation D. All types of phosphorylation require a membrane.
Which of the following is a characteristic of facilitated diffusion (passive transport) of a molecule across a membrane?
A) Its rate is higher than that of simple diffusion of the molecule. B) It is highly specific for the molecule being transported. C) The direction of transport is determined by concentration and/or electrochemical gradients. D) The rate of transport is saturable. E) All of the above are true.
According to the serial endosymbiosis hypothesis, the ancestors of mitochondria are thought to be
purple bacteria. ____________________ Indicate whether the statement is true or false.
Why do the benefits of group living focus on foraging and predation?
a. Reproduction is irrelevant for the fitness of individuals in a group. b. Individuals in groups always forage and are vigilant together. c. Groups only exist for foraging and anti-predator behavior. d. Most of an organism's time is spent foraging and avoiding predators.