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prohojiy [21]
3 years ago
13

Cell walls in plant cells provide support and structure for the cell, allowing plants to 'stand up' without a skeleton. What are

these walls made of?
A. Cellulose
B. Phospholipid bilayer
C. Cellulite
D. Cytoplasm
Biology
2 answers:
riadik2000 [5.3K]3 years ago
7 0
The answer might be A
natta225 [31]3 years ago
6 0

Answer:

Cellulose

Explanation:

Cell walls made of cellulose are only found around plant cells and a few other organisms. Cellulose is a specialized sugar that is classified as a structural carbohydrate and not used for energy. ... While cell walls protect the cells, they also allow plants to grow to great heights. You have a skeleton to hold you up.

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A cross between two individuals that are heterozygous for eye and skin color would be an example of a _____ cross.
8090 [49]

A cross between individuals that are heter0zyg0us for two different traits is a dihybrid cross. <em>A cross between two individuals that are heterozygous for eye and skin color would be an example of a _</em>dihybrid<em>_ cross.</em>

----------------------

Dihybrid crosses involve individuals that expresses two different traits and are heter0zyg0us for each of them.

So let us imagine we are studing the characters eye color and skin color. Let us assume that both of them are coded by single diallelic genes.

For eye color there is

  • Dominant allele B that codes for brown eyes
  • Recessive allele b that codes for blue eyes

For skin color there is

  • Dominant allele A that codes for black skin
  • Recessive allele a that codes for white skin

So, an individual that is heter0zyg0us for both of them, is BbAa.

If this person crosses to another person with the same genotype, we are talking about a <u>dihybrid cross</u>, because two dibybrid individuals are involved.

                             Cross:    BbAa      x      BbAa

According to this information, we can aswer the question:

<em>When crossing two individuals that are heterozygous for eye and skin color we are referring to a</em><em> dihybrid cross.</em>

-----------------------------------

Learn more about dihybrid crosses at

brainly.com/question/1185199?referrer=searchResults

brainly.com/question/24076691?referrer=searchResults

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2 years ago
What would happen if there were no greenhouse gases to trap heat?
Naya [18.7K]

Answer:

The Earth would be covered in ice and be about -18°C in temperature.

Explanation:

Greenhouse gases in the air, mainly carbon dioxide, methane and water vapour, trap radiation from the Sun and work as a thermal blanket around the planet. Without the Greenhouse effect, the Earth would be ice-cold.

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3 years ago
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