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2 years ago

Which of the following is true about photoreceptors?

Biology

1 answer:

Naddik [55]2 years ago

5 0

Answer:

a. Rods absorb light throughout the visual spectrum but confer only gray tone vision.

Explanation:

Rods and cones are the two types of photoreceptors present in the eyes. Rods are responsible for night vision or the vision in dim light. Rods do not provide color vision. Therefore, only black, white, and all shades of gray are seen in dim light.

In complete darkness, full regeneration of cone photopigments is delayed and the eyes are adapted to the darkness first. Rhodopsin is the pigment of rods. It regenerates more slowly and can detect all the colors of the light but does not provide color vision. Therefore, irrespective of the detection of a much dimmer light, threshold flashes appear gray-white only because only the rods are functioning.

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Turtles and leopards all have four limbs and an amnion. True The common ancestor of lamprey and lancelets had a vertebral column

kramer

Answer:

Explanation:

The objective is to conclude if the statements are true or false based on facts.

1) $\text{ Turtles and leopards all have four limbs and an amnion. }$ True

2) $\text{The common ancestor of lamprey and lancelets had a vertebral column. }$ False

This is because their ancestor is a Chordate who doesn't have a vertebral column but a notochord.

3) True

$\text{Frogs are the sister taxa of turtles and leopards because they are more }$

$\text{related to a common ancestor.}$

4) $\text{Leopards and bass are more closely related than turtles and bass}$ False

This is because the bass is a fish that possess some characteristics traits related to an amphibian (turtle) as compared to a mammal(leopard).

5) $\text{The taxon that shares the most recent common ancestor with frogs is the bass.}$ False

The taxa of turtles share a more common ancestor with frogs compared to bass.

6) $\text{Leopards and lancelets have no common ancestor. }$ False

The common distant ancestor for leopards and lancelets is known as Chordates

4 0

2 years ago

A man interested in losing weight and increasing his fitness followed a strict diet and exercise regimen for three months. Body

sweet-ann [11.9K]

Answer:

All alternatives are correct.

Explanation:

During the weight loss process, cellular mitochondria transform the energy reserve arranged as body fat into heat, ATP, water and carbon dioxide. Therefore, none of these forms is "more likely", and fat loss occurs as a result of the release of all these products from cellular metabolism.

3 0

3 years ago

If two organisms are in the same phylum, then which of these statements is correct?

kolbaska11 [484]

Answer;

3. the two organisms belong to the same kingdom

Explanation;

-The classification of living things includes 7 levels, from the highest to lowest rank: kingdom, phylum, classes, order, families, genus, and species . The most basic classification of living things is kingdoms.

-The broadest classifications are by domain and kingdom; the most specific classification is by genus and species.

Therefore; if two organisms are in the same phylum, then it means they both belong to the same kingdom, because kingdom is the rank of classification higher than phylum.

4 0

3 years ago

Read 2 more answers

Which molecule brings amino acids to the ribosomes to be assembled into proteins

Trava [24]

Answer:

transfer RNA( tRNA)

Explanation:

Molecules carry amino acids to the ribosomes during proteins:)

7 0

3 years ago

Read 2 more answers