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vlada-n [284]
3 years ago
9

The eyes convert light energy into neural responses that we experience as sight. The conversion of light energy into sight is do

ne by receptor cells in the _______.
Biology
1 answer:
Evgen [1.6K]3 years ago
8 0

Answer:

The correct answer is: Retina.

Explanation:

  • The Retina can be defined as the fine layer of sensory epithelial tissue located near the backward region of the eye.
  • It forms the screen where the image of the object (located outside the eye) is formed after the light from the object gets refracted and focused by the crystalline convex lens in the eye.
  • It is located in close vicinity to the Optic Nerve.
  • The Retina is lined by specialised light-sensitive photoreceptor cells.
  • There are two types of light sensitive-photoreceptor cells which are called the Rods and Cones.
  • The Rod cells are responsible for determining the intensity of light.
  • The Cone cells are responsible for determining the colour.
  • The Retina is responsible for converting the light signal received by the eye into a neural impulse which is then sent to the brain through the optic nerve.

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Which artery serves the distal part of the large intestine via its left colic, sigmoidal, and superior rectal branches?.
Elan Coil [88]
Inferior mesenteric artery
The part of the colon located distal to the left colic flexure is derived from the hindgut is supplied by the inferior mesenteric artery. The distal part (lower third of the rectum) is supplied by the internal iliac artery. The ileocolic artery supplying the cecum is a branch of the superior mesenteric artery.
8 0
2 years ago
Which of the statements regarding the cell cycle is true? Group of answer choices It is regulated by cyclins and CDKs. Different
MA_775_DIABLO [31]

Answer:

All of these choices are correct.

Explanation:

Cell cycle is the process of growth and division of cell. It comprises of interphase and mitosis. In interphase the cell grows, replicates its genomic content and prepares itself for division. In mitosis the division occurs.

Cell cycle is controlled by a group of kinases called as Cyclin dependent Kinases (CDKs). They act by phosphorylating their substrates. They are of various types like Cdk1, Cdk2, Cdk4 etc. They become active when they bind to a regulatory protein called cyclin. They are also of various types like Cyclin A, Cyclin B, Cyclin C etc. Level of cyclin and corresponding CDK increases and decreases according to the stage of cell cycle. For example in S phase of cell cycle concentration of cyclin A and E shoots up. CDK2 is able to bind to these cyclin molecules and hence it becomes active.

Cell cycle has major checkpoints where the condition of cell is analysed before it proceeds to the next stage of cycle. If any abnormality is detected, repair mechanism is activated or the cell is killed. Checkpoints do not allow cell cycle to proceed in damaged cells.

p53 is a tumor suppressor protein which can halt cell cycle when it detects some abnormality in cell. It usually acts in G1/S checkpoint (before the DNA replication starts in cell) and G2/M checkpoint (before the cell division begins). Hence, all of the above statements are true.

7 0
3 years ago
When both participants in a species' interaction develop adaptations in direct response to one another, this could progress into
fomenos

Answer:

coevolution

Explanation:

Coevolution refers to the process where two or more species modify each other's evolution via natural selection. Darwin mentioned how insects and flowering plants could coevolve by reciprocal evolutionary modifications. Coevolution has firstly been associated with mutualism between species including, for example, birds and flowering plants. However, coevolution may also involve host-parasite relationships, such as associations involving parasitic organisms and their sexually reproducing hosts. Finally, there are situations where coevolution involves both parasitism and mutualism (i.e., antagonistic coevolution).

4 0
3 years ago
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Explanation:

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6 0
3 years ago
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zaharov [31]

Answer:

c.endometium

Explanation:

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2 years ago
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