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Gre4nikov [31]
2 years ago
13

Indicate whether each statement is true or false. 1. Rod cells are depolarized in the dark. (Click to select) 2. Glutamate binds

to receptors on bipolar cells and causes them to depolarize. (Click to select) 3. Light and dark adaptation are accomplished by changes in the amount of available iodopsin. (Click to select) 4. When light reactions occur, retinal is completely released from opsin. (Click to select)
Biology
1 answer:
faltersainse [42]2 years ago
7 0

Answer:

The correct answer is - 1. true, 2. true, 3. false, and 4. true.

Explanation:

1. Rod cells are the photoreceptors present in the retina that are hyperpolarized not depolarized in dark due to sodium ions efflux.

2. Depolarisation of the bipolar cell of the retina by glutamate release by rods and cones.

3. The adaption according to the light is known as a light adaptation which takes place due to a large part of photochemical in both rods and cones which is reduced to retinal and opsins.

4. when the light reaction takes place retinal converted to opsin

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A certain machine can output 50 Joules (J) of energy when 100 J of energy are input. If the amount of friction experienced by th
Makovka662 [10]

Explanation:

75 J

Energy is neither related nor destroyed- it's simply converted to different forms. Forces are vectors with both mass and acceleration; they are interactions that have the ability to change an object's motion. As objects move, their potential energy (apprx 100 J) is converted to kinetic energy. However, friction a resistive force, which is formed from the conversion of an object's kinetic energy into heat energy, as two surfaces move along each other.

With the reduction of friction, the energy output should increase, as less energy is lost as heat. Thus, the output should be 75 J.

Learn more about energy flow at brainly.com/question/6966886

#LearnWithBrainly

3 0
2 years ago
In the lab, you isolate a chlorella mutant that is unable to switch xanthophyll pigments into the inactive, non-heat-dissipating
REY [17]

Answer:

No, because xanthophyll dissipates absorbed light as heat, and in low light environments, such dissipation would decrease photosynthesis and therefore growth.

Explanation:

Xanthophyll is one of the accessory pigments present in organisms. Being an accessory pigment, the function of xanthophyll is to dissipate the absorbed visible light. Since it dissipates the visible light, the light cannot be used by Chlorella to drive the light-dependent reactions of photosynthesis.

When a mutant Chlorella is grown in the shady region, the dissipation of light by xanthophyll would further reduce the rate of photosynthesis. This mutation is not an adaptive feature in shady regions where the rate of photosynthesis is already lower due to limited availability of light and therefore, would not be favored by natural selection and would not spread to the future generations.

8 0
2 years ago
When you pass a food stall you can smell what is being cooked.Explain,using particle theory,how this happens
Liula [17]
Because of the evaporated particles that mix with the air molecules and then our sense of smell tells us what's cooking.
6 0
2 years ago
The cell membrane regulates and controls what kind of ________ move in and out of the cell.
Fudgin [204]

Answer:

Molecules

Explanation:

I remember it from when I was in 8th grade and I had physics and science for my year in 8th so yeah that’s how I got that answer.

4 0
2 years ago
What is the probability that three F2 seeds chosen at random will include at least one yellow seed
sleet_krkn [62]
63/64 
<span>all you have to do is add up all the possibilities of drawing at least 1 yellow seed </span>
<span>YYY=.75x.75x.75=27/64 </span>
<span>YYG=.75x.75x.25=9/64 </span>
<span>YGY=.75x.75x.25=9/64 </span>
<span>GYY=.75x.75x.25=9/64 </span>

<span>totaling up to 63/64!!!!!</span>
5 0
2 years ago
Read 2 more answers
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