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
nexus9112 [7]
3 years ago
12

The oldest known fossils are ______ years old and resemble formations made by ______. Multiple choice question. 2.5 billion; cya

nobacteria
Biology
1 answer:
Lostsunrise [7]3 years ago
6 0

Answer: The question is not complete as options are not complete , the remain part are;

A. 3.7 years, photosynthetic bacteria.

B. 3.7 years cyanobacteria.

The correct option is

3.7 billion years old, cyanobacteria and stromatolite.

Explanation:

This is because cyanobacteria is the oldest fossil to exist and they have been in existence for about 3. 7 billion years. These cyanobacteria photosynthesized because they have thread like chlorophyll filament, they produce food through the process of photosynthesis which is needed for their survival and they release oxygen as bye product.

You might be interested in
An experiment you could run to test the Evolution theory?
lara31 [8.8K]
“The test of any theory is whether or not it provides answers to basic questions. Some well-meaning but misguided people think evolution is a reasonable theory to explain man’s questions about the universe.”Where did the space for the universe come from? Witch can be experimented to answer.
3 0
2 years ago
Are Sarcomeres made of amino acids?
nevsk [136]

Answer:

A titin mutation that occurs in muscular dystrophy with myositis (mdm) mice results in a predicted 83 amino acid deletion in the N2A and PEVK regions of the titin protein. Muscles from mdm mice are actively more compliant  possibly owing to the deletion in titin's I-band region. This suggests that modulation of titin stiffness in active sarcomeres by the proposed titin–thin filament interaction may be affected by the mdm mutation. The answer is YES I believe.

Explanation:

I believe the answer is yes from my deep reaserch. You may want to research in your texts book/lesson or courses and review what your teacher/professer has given you.

8 0
3 years ago
What does it mean for an environment to be isotonic?(1 point)
HACTEHA [7]

A solution to be isotonic refers to b) The concentration of solute in the environment and the concentration inside the cell are at equilibrium.

  • Isotonic solution is the solution that have equal concentration of solute on both sides of the solution separated by a membrane.
  • If a cell is kept in an isotonic solution that means the concentration of the solute inside the cell is the same as that of the outside then the movement of solvent does not occur between the cell and the external environment.
  • The osmotic pressure inside the cell and outside the cell across the semipermeable membrane of the cell becomes the same due to equal concentration of the solute on each side.

0.9% normal saline is an example of isotonic solution.

Learn more about isotonic solution:

brainly.com/question/17211905

4 0
3 years ago
Microfilaments (actin) are important for
Dimas [21]
Hello there.

<span>Microfilaments (actin) are important for

A. 
cell movement</span>
5 0
3 years ago
The process of removing and fixing orphan records is often called ____.
Digiron [165]
<span>Orphan records are records whose foreign key value does not refer to a primary key value. Orphan records are very common in database relationships. The process used to remove and fix orphan records is called scrubbing the database.</span>
7 0
3 years ago
Other questions:
  • Hoxc8 genes are responsible for the development of what
    7·1 answer
  • What is the primary function of the carbon cycle?
    15·2 answers
  • What component of the blood is part of the bodys immune system
    11·1 answer
  • during a science fair a group of students came up with the following question: "Is color an inherent property in objects or is i
    6·1 answer
  • Which biome would contain the most biodiversity in deciduous tree species? A. Taiga. B. Savanna. C. Temperate forest. D. Tropica
    7·2 answers
  • This is also due today! Please help :(
    14·1 answer
  • Name 3 types of landforms.
    6·2 answers
  • The graph illustrates the relative activity levels of three common digestive enzymes, where 0 represents no activity and 12 repr
    12·1 answer
  • As plastic travels through the ocean _____.
    11·1 answer
  • For this assignment, you will develop a scientific model on a poster that illustrates the role of photosynthesis and cellular re
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!