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Ber [7]
3 years ago
11

1. What function do photoreceptor cells perform?

Biology
1 answer:
Eddi Din [679]3 years ago
5 0

Answer:

The correct answer is 3 They detect light,allowing the spiders to see colors.

Explanation:

Photoreceptors are also called transducin  presnt in the rod cells of retina and play an important role in vision.

     The phoreceptor is a G protein coupled receptor that contain GDP.When light strikes the eye the GDP is coverted to GTP resulting in the activation of the photo receptors.

 The activation of photo receptors result in the closure of Na+ ion channels leading to hyperpolarization caused by lowering the cellular label of cGMP by the activation of phosphodiesterase enzyme.

  This ultimately result in the formation of 5"GMP.

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Which of the following is a limitation of the phylogenetic species concept?
dimaraw [331]

Answer:

The limitation of phylogenetic species concept is b. Evolutionary histories are not known for all species.

Explanation:

The species that share a common ancestor and have similar traits and functions are grouped together as a result of the phylogenetic species concept. The phylogenetic species concept shows a unique evolutionary history of one organism with another of the same group. The major set back in the phylogenetic species concept is the lack of evolutionary histories for certain species. So, these organisms cannot be grouped according to the phylogenetic species concept.

7 0
3 years ago
I NEED HELP PLEASE!!!!!!!!!!!!!!!!!!!
brilliants [131]

Answer:

66.7m/s²

Explanation:

initial velocity(V)=54m/s

Final velocity(U)=4m/s²

Time taken(t)= 0.75 seconds

Acceleration is unknown

To find the acceleration we use this formula

a=v-u/t

a=54-4/0.75

a=50/0.75

a=66.666666

since it is acceleration we use the symbol m/s² after approximating to 1 decimal place

a=66.7m/s²

rate The answer as brainliest

4 0
1 year ago
Scientists have observed that pythons have vestigial leg bones. They have also observed that snakes in general have more DNA seq
oksano4ka [1.4K]

Answer: they both suggest that snakes evolved from an ancestor with legs

Explanation:

8 0
3 years ago
What is an organism’s niche? the physical environment of the organism the role that an organism plays in the environment the tra
AleksAgata [21]

Answer:

I dont understand what you're asking but a Organisms niche is its instinctual behavior or what its learned in order to survive in its environment.

Explanation:

8 0
3 years ago
Read 2 more answers
When the energy symbols stop moving, the temperatures of iron block and water<br> are__________.
VikaD [51]
lower? we are missing some context for this question, but the higher the temperature the more molecules move, so of course, the lower the temperature, the less molecules move
8 0
3 years ago
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