The graph above shows the different colors of the visible light spectrum on the X-axis. The different colors are shown with their corresponding wavelengths (400-700nm). On the Y-axis it shows the amount of light absorbed by three pigments found in the chloroplasts of plant cells. The different pigments are most effective at absorbing light at certain wavelengths. Which of the following is true? Group of answer choices

at 440nm chlorophyll a has its greatest absorbtion rate

none of the three pigments absorb light well between 525-550nm

blue light with a wavelength of 475nm and is absorbed the most by chlorophyll b

all choices are true

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.