Answer:
1) A chemical reaction is shown.
SnO2 + H2 → Sn + H2O
What is true about this chemical reaction?
B.
It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms).
2) Read the information about an experiment.
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
Explanation:
The explanation to number 1 is that I selected it in my test and got it.
The explanation the number 2 is from the link below:
https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020
Answer:
Explanation:
Skeletal muscles are arranged in regular parallel bundles, cardiac muscle connect at branching irregular angles called intercalated disc,smooth muscle substains longer or even near permanent contractions
Cardiac muscle is located in the wall of the heart,appear striated and are under involuntary control.
Skeletal muscles fibres occurs in muscles which are attached to the skeleton...
I believe you've achieved some things from the explanation above... thanks
Explanation:
- It <em>helps in understanding and preventing genetic diseases.</em>
Genome mapping projects like the human genome project made it possible to map regions of the genome associated with disease. These regions which often arise through mutations, may be cloned and identified through diagnostic methods. This <em>helps in understanding and preventing genetic diseases, along with providing possible treatment targets in drug and gene therapeutics.
</em>
During the process of cell division, spontaneous changes within the genome can arise. These mutations are errors occur when copies of the DNA within the cell are made; mutations may range from small changes called single nucleotide polymorphisms, to large scale deletions, and additions which span multiple genes.
Further Explanation:
During reproduction other events, such as crossing over during mitosis and meiosis, mutations lead to increases in genetic variation. This variation refers to the genetic characteristics present within a species. Mutations may be either beneficial or deleterious; they are maintained within cells, as they form new traits called alleles. Beneficial mutations may confer traits that increase the fitness of a species, along with ensuring survival by conferring a protective advantage- these phenotypic differences between organisms are called adaptations.
Sequences of DNA make up genes which can have different forms called alleles. DNA, which makes up the genotype, is transcribed into mRNA and later translated into amino acids which are linked together by rRNA to form proteins which make up the phenotype of an organism. Mutations in DNA sequences affect the corresponding mRNA and thus the protein encoded.
Learn more about mutations at brainly.com/question/4602376
Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316
#LearnWithBrainly
Genotypes: XX(75%), XhX(25%)
Phenotypes: normal
Their daughters won't get it because they would need to be homozygous for it and since the father is normal, it's not possible for them to inherit this from each parents and be homozygous (draw out a punnet square if ur confused). Hope this helps'
Answer:
b positive
Explanation:
and this is the heavier gene that y
