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ad-work [718]
3 years ago
6

How do platelets aid in the healing of cuts?

Biology
1 answer:
zepelin [54]3 years ago
8 0
Platelets act like a temporary plug to prevent more blood loss, they act like a blood clot.
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In simple staining with a basic dye, do the gram-positive and gram-negative bacteria differ in retaining color?
Dmitriy789 [7]

Answer:

The above shows the procedures of the Gram's staining method, The result and important of colour in differentiating the bacteria. A little insight into staining endospore.

Explanation:

Stainings is a reagent or dye used to stain microscope specimens so as to make some structures visible.

Peptidogycan is a derivative polymer of glycan and peptides found in bacterial cell walls and varies in compositional concentration from species to species.

Cell wall- A thick, fairly rigid, layer formed around individual cells of bacteria, Archaea, fungi, plants, and algae (but not animals and other protists which generally have cell membranes without cell walls). The cell wall is external to the cell membrane and serves a structural function helping the cell maintain its shape and protecting the cell from damage.

There different types of staining techniques and classification based on the aim of the experiment and here is a few;

The etymology is from Gram + positive, is named after Dan ish bacteriologist Hans Christian Gram, who invented the Gram staining technique.

Used in bacteriology , bacteria that stains dark blue or violet after Gram staining, due to large quantities of peptidoglycan in the cell wall are gram positive.

And gram-negative bacteria is one that is not stained violet by Gram's method.

A spore is thick resistant particle produced by a bacterium or protist to survive in harsh or unfavorable conditions.

Spore staining (malachite green) however can be used to differentiate sporulating bacteria species.

The above shows the procedures of the Gram's staining method, The result and important of colour in differentiating the bacteria. A little insight into staining endospore.

8 0
2 years ago
1. How would your vision change if rods were selectively damaged by this supervillain?
lisov135 [29]

Answer:

<em>When the rod cells become more involved, affected individuals experience a decreased ability to see at night or in low light situations and may lose the ability to see clearly to the sides </em>

4 0
3 years ago
What property of water allows it to stick to the sides of a vertical glass tube?
WINSTONCH [101]
The correct answer of the given question above would be CONDENSATION. The property of water that allows it to stick to the sides of a vertical glass tube is called condensation. When you see small drops of water that form on a cold surface, this process happens because the gas cools and becomes liquid. This happening is called condensation. Hope this answer helps.
7 0
3 years ago
Radish flowers may be red, pink, or white. the part of the radish we eat may be oval or long. a cross between a red-flowered lon
icang [17]
Let's suppose that "long" is the dominant allele and  "oval" is the recessive allele.
let's suppose also that red + white genotype give a pink phenotype
every radish has 2 genotypes for each gene, one from the mother and one from the father

The proportions are: if the radish are homozygotes 
red red; long long  x  white <span>white ;</span> oval oval
red white oval long  ; red white oval long  ; red white oval long  ; red white oval long
We will have 100% of pink - long radish.

A crossmatch from homozygotes species give always a unique phenotype



6 0
3 years ago
Which is the mRNA molecule that would be transcribed from this DNA template TGGCAAGTACGT?
Vsevolod [243]

Answer:

(B) ACCGUUCAUGCA

Explanation:

Transcription is the one of the two stage involved in gene expression. It involves the synthesis of a mRNA molecule using a DNA template. The process of transcription is carried out by an enzyme called RNA polymerase which binds to the PROMOTER region of the DNA molecule and begins to synthesize RNA nucleotides based on what it reads on the DNA.

The addition of nucleotide bases on the RNA strand by RNA polymerase enzyme follows the COMPLEMENTARY BASE PAIRING RULE, which states that Adenine always pairs with Thymine while Guanine always pairs with Cytosine in a DNA molecule. In the case of transcription, the Uracil base replaces Thymine in the newly synthesized RNA. Hence, for every Adenine nucleotide read by RNA polymerase, it adds a Uracil nucleotide. The same goes for Thymine-Adenine, Cytosine-Guanine and Guanine-Cytosine i.e. A-U, G-C.

Based on this principle, a DNA template with a sequence: TGGCAAGTACGT will produce an mRNA molecule with sequence: ACCGUUCAUGCA

6 0
3 years ago
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