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Tems11 [23]
3 years ago
8

An antibiotic that attacks the LPS layer would be expected to have a broad spectrum of activity, effective against Gram negative

and Gram positive cells.A. TrueB. False.
Biology
1 answer:
Sever21 [200]3 years ago
8 0

Answer:

False

Explanation:

Lipopolysaccharides are substances that have both lipid and polysaccharide. LPS layer is the characteristic feature of gram-negative bacteria. The LPS layer is present in the outer membrane of the cell envelope of gram-negative bacteria. It is not found in Gram-positive bacteria.

Broad-spectrum drugs are the chemotherapeutic agents that are effective against several kinds of pathogens while the narrow spectrum drugs target only a limited type of microbes. Therefore, an antibiotic that attacks the LPS layer would be effective against Gram-negative bacteria only which in turn makes it a narrow-spectrum drug.

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Which of the following best illustrates a type I survivorship curve, with higher death rates at older ages? Which of the followi
Rama09 [41]

Answer:

large mammals such as gorillas

Explanation:

The survivorship curves refer to the graphical representation of the proportion of the fraction of survivors or the individuals at a given age.

There are three types of survivorship curves which can be constructed by studying the life history of the organisms.

The type I survivorship curve is the curve which can be formed with the organism which has a high survival rate at the younger and middle age and high death rate at the older age. The type I curve can be characterised by its convex shaped. The type I is showed by the large mammals like gorilla, humans and many others.

Thus, large mammals such as gorillas are the correct answer.

4 0
3 years ago
The major organs which control acids and bases in the body are:
sertanlavr [38]

Answer:

1. kidneys 2. Lungs 5. Pancreas

Explanation:

The body's balance between acidity and alkalinity in the human body is regarded as the acid-base balance which is measured on the basis of the pH and the concentration of carbon dioxide and bicarbonate in the blood. The organs that controls acid-base balance are lungs, kidneys and pancreas. Theses organs control blood pH by releasing carbon dioxide from the lungs because it is a waste product slightly acidic in nature and excreting excess of acids and bases from the body.

7 0
3 years ago
1. Describe the plasma membrane, and explain why it is called a bilayer structure.
irina [24]

Answer:

Plasma Membrane is like all other cellular membranes, the plasma membrane consists of both lipids and proteins. The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules

3 0
3 years ago
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Omnivore is your answer as i know
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. In cell A, what structure is labelled X?
Afina-wow [57]
Answer. DNA is the answer
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