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
nata0808 [166]
3 years ago
15

Question 8 10 According to the current fossil record, scientists believe that life on Earth began about how long ago? 0.5 billio

n years ago 0 1 million years ago O 65 million years ago 3.5 billion years ago Question 9 10​
Biology
1 answer:
maw [93]3 years ago
5 0

Answer:

According to the current fossil record, scientists believe that the life on earth began about 3.5 billion years ago.

You might be interested in
What is the smallest organized unit of life?<br> cell<br> tissue<br> organs<br> organisms
murzikaleks [220]
The smallest organized unit of life is a cell
8 0
3 years ago
Pepsinogen is produced by __________ and is activated by __________
Ket [755]

Answer:

Pepsinogen is produced by chief cells and is activated by hydrochloric acid secreted by parietal cells.

Explanation:

Pepsinogen is a proenzyme produced in the chief cells (that are located in the stomach lining) that, when gets activated, is transformed into pepsin - a peptidase with the function to degrade proteins into amino acids.

The reason why pepsinogen is released inactive is that it would break down all of the cell's proteins because of its proteolytic nature. For this reason, it is released as a proenzyme and gets activated when reaches the acidic environment provided by the hydrochloric acid secreted by the parietal cells, also in the stomach lining.

7 0
3 years ago
Read 2 more answers
Which characteristic of living things is important to the survival of a group of animals rather than an individual member of thi
sammy [17]

Answer:

If a whole specie of organisms has to survive, they should must possess the ability to reproduce and adopt to environmental conditions in better way.

For example: If a disaster occurs or a condition of unfavorable weather occurs, the specie will survive even if only few members remain alive. Because those members will reproduce and regrow the community.

The reason is this that reproduction is not important for the survival of one organism, like organism will still survive even if he do not reproduce, but if a whole specie has to survive and continue, reproduction is most important trait.

Hope it help!

5 0
3 years ago
The term "aerobic" means "with ____."
Sauron [17]

Answer:

Aerobic means with oxygen.

7 0
3 years ago
Which is used to make many copies of DNA?
boyakko [2]

Answer: B. Nuclear transfer!

Explanation:

Nuclear transfer is the process that DNA goes through to get cloned/copied. The cells that make new forms of DNA create a perfect replica.

Hope this answer helps!

7 0
3 years ago
Other questions:
  • Are we ready to try cloning with humans?
    7·2 answers
  • Which structure is correctly paired with its function?
    13·2 answers
  • Question 7 (1 point)<br> glucose + fructose -&gt; sucrose + water is a type of<br> reaction
    10·1 answer
  • Sarah recently learned about performing a cost–benefit analysis while studying environmental policies. Help her choose the right
    8·2 answers
  • What is the difference between phreatomagmatic eruption to phreatic eruption??
    9·1 answer
  • What are the causes of substance abuse?
    9·1 answer
  • I NEED HELP WILL GIVE CROWN FOR TWO CORRECT ANSWERED QUESTIONS
    5·1 answer
  • What statement best explains the change over the 10 year period?
    11·1 answer
  • What type of cell is Cell City and what type of cell does Celley come from?
    6·1 answer
  • What term describes the hopping of the action potential nerve impulse along the axon from one node of ranvier to the next?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!