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professor190 [17]
3 years ago
12

Some antibiotics cure diseases by inhibiting the formation of the cell walls of specific pathogens, or disease-causing agents. O

n what type of pathogens can antibiotics be used?
A. bacteria
B. viruses
C. both bacteria and viruses
D. neither bacteria nor viruses
Biology
1 answer:
kenny6666 [7]3 years ago
7 0

Answer:

A

Explanation:

antibiotics are used for bacteria only since viruses are not alive.

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It was discovered by Alexander Fleming in the 1920's that Penicillium notatum produced a substance, know as penicillin, which ha
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Answer: (B) Fungi

Explanation:

<u>Penicillium notatum is a species of fungus</u> in the genus Penicillium. It is common in temperate and subtropical regions and can be found on salted food products, but it is mostly found in indoor environments, especially in damp or water-damaged buildings.

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Which of the following terms refer to the total number of different species, including humans, on Earth or in an area? (Choose a
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Answer:

biodiversity

Explanation:

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3 years ago
The first evolved during the orbovician period
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<h2><u>Answer:</u></h2>

Amid the Ordovician Period, the outside of the earth was drastically unique in relation to it is today. About all life on earth was in the seas. The main land life was as exceptionally crude plants extremely close to the water line of the coasts, presumably greeneries and green growth and were of a non-vascular nature.  

The Ordovician Period started with a noteworthy eradication called the Cambrian– Ordovician annihilation occasion, about 485.4 Mya (million years prior). It went on for around 42 million years and finished with the Ordovician– Silurian elimination occasions, about 443.8 Mya (ICS, 2004) which cleared out 60% of marine genera.  

The timeframe that occurred 488 to 443 million years back. Amid the Ordovician time frame, some portion of the Paleozoic time, a rich assortment of marine life thrived in the tremendous oceans and the primary crude plants started to show up ashore—before the second biggest mass annihilation ever finished the period.

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9) Genetic variation is the source for evolution. Without a variety of phenotypes, there would be no differential survival upon
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The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion. The correct options are D and E.

<h3>What is genetic variation?</h3>

The presence of differences in gene sequences between individual organisms of a species is referred to as genetic variation. It allows for natural selection, which is one of the primary forces driving life's evolution.

The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion.

Thus, the correct options are D and E.

For more details regarding genetic variation, visit:

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2 years ago
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Answer:

The correct answer is option D) six dominant and two recessive.

Explanation:

The most common genetic inheritance pattern involves cross between heterozygous recessive parents which means it has one allele of each character in every parent (suppose Tt).

Cross between these parents provide these offspring; TT, Tt, Tt, and tt which exhibit 3:1 ration which can also be mention as 6:2 which means 6 out of the 8 has dominant (homozygous or heterozygous) and 2 out of 8 offsprings are recessive alleles.

Thus, the correct answer is option D) six dominant and two recessive.

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