<h2>
Answer:</h2>
<u>D. All of the above
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<h2>
Explanation:</h2>
Precambrian time incorporates Earth's history from birth up to 590 million years back. That is, the Precambrian traverses 90% of Earth's presence. Fossilized microscopic organisms and blue-green growth demonstrate that crude life existed in any event 3,500 million years prior, and potentially prior.
However, it took another 2,100 million years for eukaryotic cells (plant and creature cells) to show up. These single-celled animals (protozoa) commanded the seas. Multi-cell creatures (spineless creatures) didn't advance until exceptionally late in Precambrian time, around 700 million years prior or 2,800 million years after life initially started on Earth.
Answer:
<h2>B. that have complementary sticky ends</h2>
Explanation:
The sealing of nicks between two adjacent residues of a single-strand(ss) break on a double-strand DNA and the joining of double-strand breaks.
This is enzymatically catalyzed by the enzyme DNA ligase.
DNA ligation is the joining ends of 2 DNA molecules by the enzyme, DNA ligase. DNA ligase catalyzes the formation of two covalent phosphodiester bonds between the 3' hydroxyl group of one nucleotides and the 5' phosphate group of another and it is an ATP dependent reaction.
DNA Ligation occur most efficiently between those DNA fragments that have complementary sticky ends.
Answer:
<u><em>The correct option is the presence of a specific hormone receptor.</em></u>
Explanation:
Every cell membrane contains certain cell surface receptors which detect an extracellular molecule and allow it to perform function inside that particular cell. The cell surface receptors receive and transmit signals.
For a specific hormone to function inside a particular cell, the cell must possess a specific hormone receptor embedded in the plasma membrane which will detect the hormone and allow it to function inside the cell.
C. An unbalanced force means there will be a net force in a certain direction. Any net force will cause an object to accelerate in the direction of the net force.
Yes, these are considered organs. The skin and the bones both fall under the definition of an organ.
