1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Genrish500 [490]
3 years ago
6

What is a petrified fossil

Biology
2 answers:
Scilla [17]3 years ago
7 0

U can look up the defeniton on google

USPshnik [31]3 years ago
4 0
A petrified fossil forms when minerals replace all the parts of an organism.
You might be interested in
which of the following inferences about mrs.annie johnson is best supported by the first paragraph of the excerpt
Anarel [89]
Don’t see the paragraph
4 0
2 years ago
do boys balls float when their in a pool? or do they squeeze in bc they hate the cold? Legitimate question.
Aleonysh [2.5K]

Answer:

i asked my bro and he just stared at me like "o>O" they do because theres air in there maybe? LOL

Explanation:

5 0
3 years ago
Bacteria can make their own folic acid, which is required for nucleic acid synthesis, but humans cannot and instead have to inge
lidiya [134]

This drug inhibits the growth of bacterial cells but not human cells. This is an example of the selective toxicity of antibiotics.

Folic acid is an essential component for all cells to synthesize nucleic acids (DNA and RNA). Human cells do not synthesize folic acid and they take it through food. Bacterial cells are impermeable to folic acid and hence they need to synthesize their own folic acid.

Antibiotics target the metabolic pathway of folic acid synthesis in bacteria by inhibiting one of the enzymes in this pathway. These drugs are only toxic to bacteria but not to humans because humans do not have the folic acid synthesis pathway and hence they do not get affected by the action of the antibiotic. This is known as the selective toxicity of antibiotics.

These antibiotics are designed in a way to target the infecting agent (bacteria) while rendering minimal or no toxicity to the host (humans).

Know more about selective toxicity here :

brainly.com/question/13142849

#SPJ4

7 0
2 years ago
Creators who "level" communicate purposefully, honestly, and responsibly.
vredina [299]
<span>This is incredibly true. The top way to level up, or receive a promotion, is to have proper communication. The three most important things to keep in mind to have effective communication so you may move forward is to be purposeful, be responsible in what and how you communicate, and to always be honest and up front.</span>
7 0
3 years ago
What is chemotherapy​
gavmur [86]

Chemotherapy is a process of intense treatment for cancer. It includes one or more anti-cancer drugs. However, most people become sick after they go through with chemotherapy. This can last for days or longer. Hopefully, nobody gets cancer and has to go through this procedure.

4 0
4 years ago
Other questions:
  • Indicate how individuals relate to populations in the organization of the biosphere
    5·2 answers
  • In what way(s) are mycelia and fruiting bodies similar?
    8·1 answer
  • The full extent of my __________ skill is preparing scrambled eggs on toast.
    12·1 answer
  • All living organisms can be categorized by their response to atmospheric oxygen as obligate aerobes, facultative aerobes, obliga
    12·1 answer
  • A karyotype shows that a child has Klinefelter syndrome (47,XXY). If the child is also color-blind (due to a recessive X-linked
    8·1 answer
  • Genetic mutations pass to offspring in gametes because gametes A) are not germ cells. B) make up all internal organs. C) do not
    7·2 answers
  • The mere exposure effect can be explained in part by
    6·1 answer
  • The endosymbiotic theory suggests that a prokaryotic cell ate another prokaryote, giving rise to eukaryotes.
    12·1 answer
  • How does heredity relate to dna
    5·2 answers
  • Transformed bacteria are plated on LB plus ampicillin to determine which cells were successfully transformed. Which part of the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!