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3 years ago

Which of these is an organism a herd of sheep a wolf a drop of water or a heart

2 answers:

7 0

A wolf! A flock of sheep cannot be called a singular organism, and a drop of water is non-living although it might contain many microorganisms. A heart is a part of an organism but is not one on its own.

Hope this helps! : )

salantis [7]3 years ago

5 0

Answer;

-A wolf is an organism

Explanation;

-Living organisms are made up of cells. A cell is the basic building block of all organisms. It is the smallest unit of organization in a living thing. They contain the organism's hereditary information (DNA) and can make copies of themselves in a process called mitosis.

-A herd of sheep, is a group of sheep. A heart is an organ in living organism such as human, a drop of water is a type of mater made up of water molecules.

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Which of the following is NOT a form of energy?

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On the African Savannah, what types of abiotic factors may lead to high population density and clumped dispersion patterns?

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Animals that live in herds like elphants have a clumped dispersion pattern because of
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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.

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3 years ago

Describe the genus Staphylococcus. Include at least 5 points about the genus. Describe a step by step process of how you would d

qwelly [4]

Answer:

Staphylococcus is a gram negative bacteria that belongs under family Staphylococcaceae.The name is given as their body shape is spherical(Cocci).

Explanation:

The important characters of Staphylococcus are-

Staphylococcus are facultative anaerobic organism.
They are spherical in shape.
As they are gram positive bacteria, thus the cell wall is prominant and easily stained with crystal violet and they are grown in bile salts.
They are capable of producing coagulase enzyme that cause blood clot.
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Difference between S. aureus and S.epidermis-

S. aureus is round in shape where as S.epidermis is spherical in shape.
S. aureus is a opportunistic pathogen that cause different diseases like skin infection where as S.epidermis is non pathogenic bacteria.
S. epidermis form white raised cohesive colony with 1-2 mm in diameter whereas, S.aureus form golden yellow color colony.
S.aureus causes hemolysis when it is grown in agar plate whereas S.epidermis is not hemolyse in blood agar plate.

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3 years ago

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