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Misha Larkins [42]
3 years ago
13

Which of these BEST describes why certain bacteria have become resistant to penicillin?

Biology
2 answers:
hichkok12 [17]3 years ago
6 0
Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm. Bacteria can do this through several mechanisms.
sveta [45]3 years ago
3 0
<span>Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive.

</span>
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vladimir1956 [14]

The right option is; d. consumers

All animals are consumers

Consumers are organisms that usually feed on other organisms or organic matter in order to gain energy because of their inability to manufacture their food from inorganic sources. All animals are consumers and they are also known as heterotrophs. There are different types of consumers. They include; primary consumers (herbivores e.g. goats, cows), secondary consumers (carnivores e.g. wolves, crocodile), and tertiary consumers (large carnivores e.g. eagle, lion)


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4 years ago
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Answer:

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Explanation:

Isotopes are atoms of the same chemical element, and therefore with the same number of protons, in which the number of neutrons in the atom core differs. According to current models, an atom consists of an atomic nucleus surrounded by a cloud of electrons. The core consists of a number of protons and a number of neutrons. The number of protons determines the atomic number of the element and also the chemical properties. The number of neutrons determines, among other things, the stability of the nucleus and, together with the number of protons, the atomic mass. Two atoms with the same number of protons but a different number of neutrons are called two isotopes of the same element.

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3 years ago
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trapecia [35]

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