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kirza4 [7]
3 years ago
6

Its not that hard 20 points! im just too lazy

Biology
2 answers:
Leona [35]3 years ago
8 0

Answer:

B

Explanation:

it is correct because I did it

Alex_Xolod [135]3 years ago
4 0

Answer:

I think the answer is gonna be b

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Forming the cell walls of stems, leaves, and roots, what compound is the primary structural constituent of plant tissues?
andreev551 [17]

Answer:

cellulose

Explanation:

Cellulose is plant constituent composed of a huge number of glucose units. It is the main structural component of the primary cell wall of plants. Cellulose is usually in mixture with hemicellulose, lignin and pectin. Because of its structure, cellulose is responsible for the  strenght and rigidity od plant cells.

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3 years ago
What are two concerning effects of climate change?
Hitman42 [59]

Answer:

<h2>Humans and wild animals face new challenges for survival because of climate change. More frequent and intense drought, storms, heat waves, rising sea levels, melting glaciers and warming oceans can directly harm animals, destroy the places they live, and wreak havoc on people's livelihoods and communities.</h2>

Explanation:

HOPE Its HELP

6 0
3 years ago
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In peas, purple flowers are dominant to white and tall plants are dominant to short. A white and short plant is crossed with a p
Mumz [18]

to understand what the result of these crosses would be like, we need to know what is gene

<h3>Gene</h3><h3 />

The gene is a strand of a DNA molecule (deoxyribonucleic acid), which carries the characteristics that are genetically inherited. They are composed of a sequence of DNA and RNA (ribonucleic acid), responsible for the production and synthesis of proteins in the cell. The gene's greatest attribution, therefore, is to be a store and transmitter of information.

Genes can be classified into:

  • Dominant genes: assume the specific characteristic in the offspring;
  • Recessive genes: manifests itself in the absence of the dominant gene;
  • Structural genes: are those that contain the information that will determine the structure of living beings;
  • Operator gene: acts on the functioning of other genes;
  • Regulatory gene: responsible for controlling the synthesis and transcription of other genes.

<h3 /><h3 />

in genetics, are individuals who have pairs of genes that are identical or different alleles. This means that while the has two identical genes alleles, with the beings the opposite happens, since they have two different genes alleles.

with this information we can say that a white and short plant, when crossed with a plant  for both traits, has 60% of this plant being  with expression of the dominant genes and 40% of being  with expression of the recessive gene.

<u>To make it easier to understand, I created an image containing the </u><u>gene </u><u>information and whether they are </u><u>.</u>

<u></u>

Learn more about gene in brainly.com/question/787658?referrer=searchResults

6 0
3 years ago
What are cells made up of​
Vera_Pavlovna [14]

Answer:

A cell is basically made of biological molecules (proteins, lipids, carbohydrates and nucleic acids). These biomolecules are all made from Carbon, hydrogen and oxygen. Proteins and nucleic acids have Nitrogen.

Explanation:

4 0
4 years ago
Which proteins is used as a chemical defense at body surfaces?
UNO [17]

Answer: Antimicrobial proteins.

Explanation:

Antimicrobial proteins are the type of proteins produced by the keratinocytes on the body surfaces. These proteins acts as the barrier and kills the microorganism which is trying to enter the body.

These are larger proteins containing more than 100 amino acids. They are often lytic in nature.

The cell membrane of the microbes is disrupted by the action of these amino acids or proteins on them.

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