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Angelina_Jolie [31]
3 years ago
7

Best defense for a bird?

Biology
2 answers:
algol133 years ago
6 0

Answer:

flight

Explanation:

shusha [124]3 years ago
3 0
Flight is your answer
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Please, i need this done asap, its timed too.
Arlecino [84]
B is the correct answer
5 0
3 years ago
Que entiendes por célula ?
riadik2000 [5.3K]
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. ... Cells have many parts, each with a different function.

Las células son los componentes básicos de todos los seres vivos. El cuerpo humano está compuesto por billones de células. Proporcionan estructura al cuerpo, ingieren nutrientes de los alimentos, convierten esos nutrientes en energía y realizan funciones especializadas. ... Las celdas tienen muchas partes, cada una con una función diferente.



6 0
2 years ago
In the heterozygous state (w+ / w), a variegated eye is produced, with white and red patches. How might one explain position-eff
Yuri [45]

Answer:

2. The white patches are caused by the deacetylation of the histones associated with the DNA of the w + allele.

3. The red patches are caused by the acetylation of the histones associated with the DNA of the w + allele.

Explanation:

The complete question is as follows:

How might one explain position-effect variegation in terms ofhistone acetylation and/or deacetylation? Select all thatapply.

1. The white patches are caused by the acetylation of the histonesassociated with the DNA of the w + allele.

2. The white patches are caused by the deacetylation of thehistones associated with the DNA of the w + allele.

3. The red patches are caused by the acetylation of the histonesassociated with the DNA of the w + allele.

4. The red patches are caused by the deacetylation of the histonesassociated with the DNA of the w + allele.

In the W+/W State variegated eye is produced, however in reality the W+ allele causes a red eye colour whereas the W allele causes a white eye.

The reason for production of variegated eyes is chromosomal rearrangement.

Due to the chromosomal rearrangement the W+ gene's position gets changed and it moves from a region of euchromatin to heterochromatin and this position affect leads to red and white patches in the eye.

The heterochromatin is silent region of the genome which does not encode for any product and this is caused by histone deacetylation whereas the histone acetylation makes the chromosomes more accessible and contributes the euchromatin region.

8 0
3 years ago
The various parts of the endomembrane system serve different functions in the cell. In this activity, you will identify the role
liberstina [14]

Answer:

Smooth ER:

Lipid synthesis, Calcium ion storage, Poison detoxification

Rough ER:

Protein synthesis

Golgi apparatus:

Protein modification and storage, Cisternal maturation

Lysosomes:

Autophagy, Macromolecule digestion

Explanation:

The endomembrane system is important for the production, processing, and transport of proteins and lipids in the cell.

The smooth ER:

It aids basically in lipid production and processing.

The smooth endoplasmic reticulum, or smooth ER, is an organelle that is observed in animal cells and plant cells. Itd basic function is the production of cellular products such as hormones and lipids.

The rough ER :

It is the spot of secretory protein production.

Rough endoplasmic reticulum is observed in eukaryotic cells. Its basic aid is to synthesize proteins. It consists of cisternae, tubules and vesicles. The cisternae comprise of flattened membrane disks, that play a major role in protein modification.

Golgi apparatus:

It helps in further processing of the proteins produces for the rough ER and then in sending them off in vesicles to the plasma membrane.

It's often termed the cell's post office. It modifies, sorts and arrange proteins for secretion. It aids lipid transportation around the cell, and the production of lysosomes.

Lysosomes:

Its enzymes are synthesized and formed in the rough ER and Golgi apparatus. It aid hydrolysis of macromolecules e.g. phagocytosis and autophagy.

It is involved in digestion and waste removal by feeding on worn-out organelles, food molecules, and engulfed viruses or bacteria.

8 0
3 years ago
1. What is a tornado?
ira [324]

Answer:

A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.

Explanation:

5 0
3 years ago
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