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Nadusha1986 [10]
3 years ago
14

A. how is each target selectively toxic to kill microbes without harming the host?

Biology
1 answer:
finlep [7]3 years ago
6 0
- Bacteria are encased in a cell wall, if they didn't have on they would absorb water, swell and burst
- Penicillin's and cephalosporin's weaken cell wall and cause lysis, since mammalian cells have no cell wall these drugs do not affect them
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In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The al
Lerok [7]

Answer:

The parent's genotypes are:

Ddpp - tall, white parent

ddPp - dwarf, purple parent.

Explanation:

This question involves two different genes coding for height and flower color in pea plants. The alleles for tallness (D) and purple color (P) are dominant over the alleles for dwarfness (d) and white color (p) respectively.

According to this question, a tall plant with white flowers is crossed with a dwarf plant with purple flowers to produce the following proportion of offsprings: 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white.

Since some of the offsprings contain recessive alleles for both or either genes, the dominant traits of the parent is controlled by an heterozygous genotype. This means that the tall plant with white flowers has a genotype: Ddpp while the dwarf plant with purple flowers has the genotype: ddPp. In a cross between Ddpp × ddPp, 1/4 of each combination of alleles is produced in the offsprings (see punnet square in the attachment).

3 0
3 years ago
Provide two specific examples of harmful bacteria and what diseases they cause
Step2247 [10]

Answer:Common pathogenic bacteria and the types of bacterial diseases they cause include:

Escherichia coli and Salmonella cause food poisoning.

Helicobacter pylori cause gastritis and ulcers.

Explanation: i take advanced biology and we learning about what harmful diseases that bacteria can create

5 0
3 years ago
The human heart is separated into left and right sides. this type of structure provides for the
Evgen [1.6K]
Systematic separation of the circulation of the blood. The right side of the heart receives oxygen-poor blood from your body and pumps it to the lungs. The lungs oxygenate the blood which returns to the heart and is pumped to the rest of the body by the left side of the heart. After which the blood returns to the right side, completing the cycle of circulation.
3 0
3 years ago
Bob can run the 100 meter dash in 25 seconds.What is his speed?
-Dominant- [34]

Answer:

i believe the answer would be 4 mph

Explanation:

the formula for speed is distance/time so 100/25 = 4. therefore your answer would be 4 mph. hope this helps:)

4 0
3 years ago
Read 2 more answers
Normally, what is the relationship of the amount of sodium excreted to the amount ingested that day?​
kvv77 [185]
The correct answer is "intake and excretion are equal." Normally, there should be equilibrium between the intake of sodium and the excreted sodium. There are regulatory mechanisms in the body that regulate the excretion of sodium in order to match it with the intake. This is to prevent hyponatremia and hypernatremia.
5 0
3 years ago
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