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3 years ago

Why don't antibiotics kill humans as well as bacteria??

1 answer:

7 0

Antibiotics work by affecting things that bacterial cells have but human cells don't. ... The antibiotic penicillin works by keeping a bacterium from building a cell wall. Bacteria and human cells also differ in the structure of their cell membranes and the machinery they use to build proteins or copy DNA.

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Why do organisms require different levels of cellular organization

Andru [333]

A unicellular organism must perform all functions necessary for life. A multicellular organism has specialized cells, tissues, organs, and organ systems that perform specific functions.

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3 years ago

Help please identify the label structures in the longitudinal section of the a stem tip

zhuklara [117]

Answer:

Explanation:

I hope this is what your looking for but I hope it helps in a way!!!!

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2 years ago

Clara is a vegan and she does not drink milk, a food advertised as a best source of calcium. But she is not worried too much sin

marysya [2.9K]

Explanation:

%DV label= 27%

1 cup of cooked collared greens= aprx 266.60 mg of Calcium

Assuming Clara is...

a teen, her required adequate intake (RAI)= 1300 mg/ day
an adult, her RAI= 1000 mg/day

For teenaged Clara

∵27 % DV= 270mg

% daily Calcium= $\frac{270}{1300} * 100=$ = 20.8 ≈ 21%

=0.21

<u>21% of her daily calcium needs is in a cup of cooked collard greens.</u>

Calcium is an essential mineral required by the human body, it is involved in cell signalling, muscular function and homeostasis. Along with fats, fiber, vitamin A and C and iron, calcium makes up part of a recommended daily intake target or DV- these are integral to a balanced diet.

Learn more about energy storage at brainly.com/question/523624

Learn more about homeostasis at brainly.com/question/1601808

#LearnWithBrainly

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3 years ago

(BRAINLIEST QUESTION) Natural selection is an important part of evolution. It is:

ladessa [460]

Answer:

The answer to the first one is B. A mechanism for the evolution of a population to become better adapted to their environment over many generations.

The answer for the second one is C.vestigial

Explanation:

8 0

3 years ago

Please help i’ll make you brainlist

Svet_ta [14]

Answer:

Drastic changes in temperatures.

Explanation:

If it is warm, then it won’t be changing drasticlly, so pretty obvious ngl

<h2><u>Hope This Helped!</u></h2>

5 0

3 years ago

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