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3 years ago

The part of the eye that closes and opens to let light in is the________ .

Biology

2 answers:

tino4ka555 [31]3 years ago

8 0

“Iris” would be the answer to your question :))

irga5000 [103]3 years ago

7 0

Hello There!

This is called the "IRIS"

The iris is the colored part of they eye and it's responsible for focusing light onto the cornea.

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Cortisol and growth hormone both have roles in _____ blood sugar, whereas insulin plays a role in ______ blood sugar.

tino4ka555 [31]

Cortisol increase blood sugar, insulin decreases

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3 years ago

Structural Difference between the heart and the lung

coldgirl [10]

Answer:

Heart is a muscle with 4 chambers while lungs is an organ and exists in pair

Explanation:

Heart is a form of muscle which has 4 chambers namely The right ventricle, the left ventricle, the left atrium, and the right atrium responsible for pumping blood while the lung are organs responsible for respiration or breathing. They have tiny sacs called alveoli and are found in pair.

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3 years ago

Where does the chemical energy released in a chemical reaction come from?

nataly862011 [7]

The chemical energy released in a chemical reaction is a product of the reactants in a reaction. In a reaction, something is either broken down or combined to form something new.

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3 years ago

In corn, small pollen (sp) is recessive to normal pollen (sp+) and banded necrotic tissue, called zebra necrotic (zn), s ssive t

alex41 [277]

Answer:

Option B

Explanation:

Please see the attached image

Given -

Allele for small pollen is "sp"

Allele for normal pollen is "sp+"

and "sp+" is dominant over "sp"

Allele for zebra necrotic tissue is "zn"

Allele for normal necrotic tissue is "zn+"

and "zn+" is dominant over "zn"

Cross is carried out between

sp+ sp zn+ zn x sp+ sp zn+ zn

The gametes of the parent cells are -

sp+ zn+, sp+zn, spzn+, spzn

The cross would be as follows

sp+ zn+ sp+zn spzn+ spzn

sp+ zn+ sp+ sp+ zn+ zn+sp+ sp+ zn+ znsp+ sp zn+ zn+ sp+ spzn+ zn

sp+zn sp+ sp+ zn+ znsp+ sp+ zn znsp+ sp zn+ zn sp+ sp zn zn

spzn+ sp+ sp zn+ zn+sp+ sp zn+ znsp sp zn+ zn+ sp sp zn+ zn

spzn sp+ sp zn+ zn sp+ sp zn zn sp sp zn+ zn sp sp zn zn

Hence, option B is correct

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3 years ago

Which of the following statements is true?

Luda [366]

Global winds rising near equator and cold air sinking near the poles

8 0

3 years ago

Read 2 more answers