26 chromosomes
A body cell from a frog has 26 chromosomes. 3. A sperm cell from a dog contains 39 chromosomes.
Answer:
The appropriate order for the basic steps of protein synthesis are listed below
Explanation:
First step D The large ribosomal subunit joins the initiation complex preparing it for elongation stage.
Second step C Binding of mRNA by small Sub unit followed by association of a particular initiator aminoacyl tRNA that recognizes the first codon.
Third step B The P site is occupied by peptidyl tRNA carrying the growing polypeptide chain.
Fourth step A The elongation reaction transfers the peptide chain from the peptidyl tRNA in the p site to the aminoacyl tRNA in the A site.
Fifth step E The new longer Peptidyl tRNA moves from A site into the p site as the ribosome moves one codon further along the mRNA.
The fluid-mosaic model describes the plasma membrane of
animal cells. The plasma membrane that surrounds these cells has two
layers (a bilayer) of phospholipids (fats with phosphorous
attached), which at body temperature are like vegetable oil (fluid).
And the structure of the plasma membrane supports the old saying, “Oil
and water don’t mix.”
Each phospholipid molecule has a head that is attracted to water (hydrophilic: hydro = water; philic = loving) and a tail that repels water (hydrophobic: hydro = water; phobic
= fearing). Both layers of the plasma membrane have the hydrophilic
heads pointing toward the outside; the hydrophobic tails form the inside
of the bilayer.
Because cells reside in a watery solution (extracellular
fluid), and they contain a watery solution inside of them (cytoplasm),
the plasma membrane forms a circle around each cell so that the
water-loving heads are in contact with the fluid, and the water-fearing
tails are protected on the inside.
Answer:
The amount of detail was different
Explanation:
Before the invention of the microscope, the scientists depended on the eyes. In addition, they depended on the general magnifying glass. This resulted in the limited details. However, a combination of mirrors and magnifying glass resulted in the better magnification and resolution. In addition, the introduction of transmission electron microscope also made things better. In addition, the microscope could provide more information that would not have been accessed by the naked eye.
