Answer:
He is correct
Explanation:
Just took my lesson and got 100% the answer is mass
2.
3. Each cell makes a complementary DNA strand.
4. The cells separate.
Which is the missing step for the process of conjugation described?
Answer:
2. The Fusion of cell membranes and transfer of single strand of plasmid DNA of donor cell.
Explanation:
When one bacterium transfers its genetic material through direct contact to others. The bacterium transfers its genetic material called donor cell and one serves it called recipient cell.
There are mainly four steps in this process-
1. Connecting sex pilus to recipient cell by donor cell.
2. The Fusion of cell membranes and transfer of single strand of DNA to the recipient cell.
3. Each bacterium cell makes a complementary DNA strand.
4. Both bacterium cells separates.
provides a basis for disproving this claim?
It can be deduced that the cell theory that provides a basis for disproving this claim is that all cells are from existing cells.
It should be noted that a cell theory simply means that all biological organisms are made of cells.
In this case, some people believed that fleas actually came from dust. This was proved wrong as the cell theory states that all cells are from existing cells.
Learn more about cell theory on:
Answer:
There are no options to this question, however, it can be answered. The answer is:
All cells arise from previously existing cells
Explanation:
The universal cell theory was proposed in 1830's by three scientists viz: Rudolf Virchow, Mathias Scleiden, and Theodor Schwann. The cell theory consists of three major components which are generally accepted and used till date. The components are:
- All living things are made up of one or more cells
- The cell is the fundamental and basic unit in every living thing.
- All cells arise from previously existing cells via cell division
According to this question, many unscientifically based claims including the believe that fleas actually came from dust have been made. This claim has been DISPROVED by the part of the cell theory that states that "All cells arise from previously existing cells via cell division". Hence, fleas do not arise from dust but from other cells according to cell theory.
b. Capillaries have thin walls and narrow diameters so that blood cells come close to the thin walls, across which gases can diffuse to surrounding tissue.
c. Capillaries have valves along their walls that allow blood cells to move through them to surrounding tissue, where gas exchange can occur.
d. Capillaries regulate the pressure of blood within them so that a steady stream of gas-infused blood cells passes into the surrounding tissue.
Answer:
THE "B" ANSWER IS WRONG...I JUST TOOK THE TEST
Explanation:
Answer:
gene
Explanation:
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.
Genotype and Phenotype, i'm pretty sure. Two alleles of a genotype and phenotype are inherited.