The volcanic island Selkirk arose from the North Atlantic off Iceland in 1948. The first organisms to start living there are said to be ________

A) rogue organisms B) climax species C) central species D) pioneer species


Answer: D

Biology & Microbiology

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The Km for enzyme Q is 1 × 10-6 M. Q catalyzes the reaction R?S at a velocity of 30 µmole/min when the concentration of substrate is 0.02 M; hence, Vmax is approximately 30 µmole/min

Assuming Michaelis-Menten kinetics is followed, what will the reaction velocity be when [S] is 10-7 M? A. 30 µmole/min B 3.0 × 10-7 µmole/min C. 2.7 µmole/min D. 2.7 × 10-12 µmole/min E. 0.27 µmole/min

Biology & Microbiology

Answer the following statements true (T) or false (F)

1. When a molecule of NAD+ gains a hydrogen atom, the molecule becomes reduced. 2. Proteins and fats may be used as energy sources to drive aerobic respiration. 3. During the energy investment phase of glycolysis, glucose has a decrease in free energy. 4. The rate of photosynthesis is much greater in green light than red light.

Biology & Microbiology

Barrier reefs are separated from land by shallow lagoons

Indicate whether the statement is true or false

Biology & Microbiology

Newtons 2nd law of motion

What will be an ideal response?

Biology & Microbiology