Answer:
DNA is double-stranded, while RNA is single-stranded. RNA contains ribose as a sugar, while DNA contains deoxyribose. Also, three of the nitrogenous bases are the same in the two types (adenine, cytosine, and guanine), but DNA contains thymine while RNA contains uracil.
Answer:
Generation of an action potential in the neuron.
Stimulation of Ca2+ entry into the neuron
Release of acetylcholine into the synapse
Depolarization of the muscle fiber membrane
Explanation:
The following events takes place in the vertebrate neuromuscular junction
a) Nerve Action Potential - Action potential reaches the axon terminal
b) Entry of calcium ion - The calcium ion reaches the axon terminal and enter into the presynaptic terminus after which the Synaptic vesicles fuse with the membrane of axon terminal
c) Releasing of Arch Quanta - Acetylcholine is released into synaptic cleft which then binds to the receptor sites on motor end plate
d) The Na+/K+ channels opens and Motor end plate becomes depolarized.
The best answer is b - experiment.
An organized process that is used to gather and analyze observations and test a hypothesis is an experiment.
An experiment is the fourth step in scientific method after observation, question and hypothesis.
An experiment is a test that is carried out under controlled conditions with the purpose of demonstrating a known truth, determine the efficacy of a yet untried thing or to examine the validity of a hypothesis.
A hypothesis is a proposed solution for an occurrence that is still unexplained and which does not fit in current accepted scientific theory.
Answer:
all of their children would have a widow's peak hairline
Explanation:
Chris's genotype consists of two dominant widow's peak genes and Janet has two recessive widow's peak genes so the each of the children will inherit one dominant and one recessive widow's peak genes from each parent, making them exhibit "v" shaped hairline and also being carriers for straight hairline.
Answer;
61
Explanation;
-The value 61 signifies that 61% of the 617 nucleotide positions are the same in both species, this about the comparable rRNA gene sequences in Comamonas testosteroni and Escherichia coli.
-Some cells have a dash rather than a value because those cells would compare one species to itself. Other shaded grey with no value because these cells would duplicate comparisons shown elsewhere in the matrix.
