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
kozerog [31]
3 years ago
12

According to the model below, how long ago did the common ancestor of all the organisms on the

Biology
1 answer:
lapo4ka [179]3 years ago
6 0

<em><u>Answer</u></em>

<em><u>about 3.9 billion years ago</u></em>

<em><u>about 3.9 billion years agoThe most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago.</u></em>

You might be interested in
Which of the following is not used by plants for photosynthesis?
lys-0071 [83]

Answer: oxygen

Explanation:

The photosynthesis equation is:

water+carbon dioxide + sunlight—> glucose + oxygen

Oxygen is a product of photosynthesis, not used in the process.

Carbon dioxide and water are both used in the process, and chlorophyll traps light energy from the sun.

Hope this helped!

8 0
3 years ago
Read 2 more answers
Lysine should are organelles that contain enzymes. Which of the following is a function of lysomes?
Katyanochek1 [597]

The purpose of a lysosome is to digest things inside of a cell. Acting like "the stomach" of a cell, lysosomes are only found inside of animal cells, not plant cells. The lysosome holds enzymes created by the cell so it is able to digest things.

8 0
4 years ago
Use the drop-down menus to complete the statements. Are made of sugars. Are used by organisms for long-term energy storage. Are
Novosadov [1.4K]

Answer:

Are made of sugars = Carbohydrates

Are used by organisms for long-term energy storage = Lipids

Are used by organisms for energy = Carbohydrates

Are made of fatty acids = Lipids

8 0
3 years ago
Read 2 more answers
How does messenger rna work inside the cell​
bezimeni [28]

Answer:

A RNA polymerase separates the hydrogen bases of a gene to produce a strand of messenger RNA, which leaves to nucleus. When a ribosome attaches itself to the messenger RNA, it reads the RNA 3 bases at a time to build amino acids which are then folded into proteins.

More explained process:

Note: The description below will explain the process of “protein synthesis”, in which the mRNA (messenger RNA) takes part of.

In the process of protein synthesis, the first step is called “transcription”. In transcription, the mRNA (messenger RNA) unwinds DNA base pairs, and pairs it with the single strand of RNA (A,U,C,&G) . Then the mRNA moves out of the nucleus and into the cytoplasm to ribosome. That process is called “translation”. In translation, there is a molecule called tRNA (transfer RNA). There is an amino acid which corresponds to the base pairs of RNA in top, which will create a chain of amino acids. [ For example, the bases are AUC, the corresponding amino acid will be isoleucine (Ile). Next, the tRNA molecules carry the amino acids to mRNA, reads the RNA 3 bases at a time to build an amino acid chain which are then folded into proteins.

5 0
3 years ago
How channels for sodium (na+) control the neuron impulse and depolarization and how changes to these channels would affect neuro
san4es73 [151]
The opening of channels that let positive ions flow out of the cell (or negative ions flow in) can cause hyperpolarization. Examples: Opening of channels that let
+
K
​+
​​ K, start superscript, plus, end superscript out of the cell or
−
Cl
​−
​​ C, l, start superscript, minus, end superscript into the cell.
The opening of channels that let positive ions flow into the cell can cause depolarization. Example: Opening of channels that let
+
Na
​+
​​ N, a, start superscript, plus, end superscript into the cell.
The opening and closing of these channels may depend on the binding of signaling molecules such as neurotransmitters (ligand-gated ion channels), or on the voltage across the membrane (voltage-gated ion channels).
6 0
3 years ago
Other questions:
  • A young child has an audible murmur. the nurse practitioner describes it as a grade 4 murmur. how should this be managed?
    12·1 answer
  • True or false? the infant mortality rate is defined as the number of infant deaths among infants aged zero to one year divided b
    7·1 answer
  • Please help meee,Thanks;)
    12·1 answer
  • Match each characteristic to the type of protistit describes.
    7·2 answers
  • Around 40% of cats with white fur and blue eyes are deaf. The gene responsible is pleiotropic. What does this mean?
    12·2 answers
  • What factors would most directly affect blood flow through the circulatory system?
    12·1 answer
  • Question A.
    13·1 answer
  • When will I get a 10 in my exam?
    7·2 answers
  • Argon (Ar): [Ne]3s23p6 core electrons
    13·1 answer
  • Hacé la notación electrónica de los siguientes números atómicos establecer el
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!