When a nerve impulse reaches the end of an axon, the axon releases chemicals called neurotransmitters. This would make the answer be.... A. a chemical signal is released
B. The top image is in test 1, and the bottom image is in step 3.
submitted review and got it right
The most useful microscope to use would be a Compound Light Microscope. These microscopes are limited to about a good 2000X magnification. Not only can you use this to estimate the number of red blood cells, but it is good for seeing and identifying protozoa, bacteria, and organism cells.
Answer:
1) The statement is false
2) Option A) deoxyribose, phosphate, and a nitrogenous base
Explanation:
1) In semi-conservative DNA replication:
- a parent double-stranded DNA splits in two.
- Each strand is then read by the enzyme, DNA polymerase, to ensure accurate synthesis of a new daughter strand
- the newly synthesized strand contains nucleotides that are complimentary to free nucleotides present in the parent strand.
Thus, because the parent strand is retained in the newly synthesized DNA, DNA replication is described as semi-conservative
2) DNA consists of several repeating units of polydeoxynucleotides where each is made up of a nitrogenous base (Adenine, thymine, cytosine or guanine) linked to
deoxyribose sugar by an N-glycosidic linkage, and then the sugar linked to a phosphate group by phosphoester bond.
