The approach, Ecosysyem-based uses ____ tools to manage resources.

Identify the structure shown below, describe it in detail. Make sure to include following points.

Oxana [17]

Explanation:

1. DNA double helix

2. adenine and thymine cytosine and guanine

3. To contain genetic materials

5 0

3 years ago

Mitochondria are a cell's powerhouse. Which of these cells would need a large number of mitochondria to function and survive?

aalyn [17]

Answer:

Liver cells would need a large number of mitochondria to function and survive as alot of energy is required to detoxify the toxic material and also aids in insulin production when sugar level is high or intake of sugar becomes high

so correct option is C.

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4 0

1 year ago

The video compares the key similarities and differences between mitosis and meiosis. Determine which events occur in mitosis, me

notka56 [123]

Answer:

Mitosis:

A single division occurs, separating sister chromatids

End result is two diploid cells that are genetically identical to each other and the parent cell

Meiosis:

The first division separates homologous pairs; the second division separates sister chromatids

Homologous chromosomes pair up and form chiasmata

Homologous pairs of chromosomes line up on the metaphase plate

Daughter cells contain recombinant chromosomes

End result is four haploid cells that are genetically different from each other and the parent cell

Mitosis and Meiosis:

Chromosomes duplicate during interphase

Process starts with a diploid cell

Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell

Explanation:

Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.

A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.

Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis. During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.

Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.

8 0

3 years ago

List the unifying principles of virology.

yanalaym [24]

The unifying principles of virology are: All viruses are made of a nucleic acid molecule in a protein coat, all viruses are incapable of replicating themselves and must infect a host cell to do so, and all viruses must have genomes that provide mechanisms for them to work.

8 0

3 years ago

Which of the following correctly states the functions of the rough endoplasmic reticulum? a. lipid metabolism, cholesterol synth

grigory [225]

Answer:

b. synthesis of cellular membrane components

Explanation:

Endoplasmic reticulum is a network of membranes fistulas; within the cytoplasm of a eukaryotic cells, where proteins and lipids are synthesized usually connected in continuum with the nuclear membrane of the cell.

The ER is of two kinds the smooth and the rough ER (Endoplasmic reticulum).

Functions of Rough endoplasmic reticulum includes; * Synthesis of protein * Degradation of worn out organelles

While the functions of Smooth endoplasmic reticulum includes; * Synthesis of lipid and steroids * Role cellular metabolism * Storage and metabolism of calcium * Catabolism of toxic substance.

Inference from the functions stated above shows that ER is actively involved in the synthesis of cellular membrane components.

8 0

3 years ago

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