Answer:
1. False
2. Biuret's test
3. No test will be used
4. Proteins
5. Lugol's reagent
Explanation:
1. Benedict's test is used to detect carbohydrates. Specifically, it tests for the presence of simple carbohydrates, such as monosaccharides and disacchsrides. It is blue in the absence of sugar, green/yellow in the presence of a small amount of sugar, orange red in the presence of a moderate amount of sugars, and brick red when there are lots of sugars present.
2. Biuret's reagent is a chemical test that measures the presence of proteins by detecting the presence of a peptide bond. The test is used to measure the concentration of proteins in a sample. The intensity of the purple colour formed is directly proportional to the concentration of protein present.
3. Nucleic acids are not detected by any of the listed tests. Biuret reagent tests for the presence of proteins, Benedict's reagent detects the presence of carbohydrates. The beta carotene test measures the level of beta-carotene in the blood. diphenylamine can be used as a colorimetric test for the presence of DNA or RNA.
4. Enzymes are a class of proteins. They are biological catalysts, meaning they participate in, and speed up, chemical reactions in the cell, without us themselves becoming altered in the reaction. They are proteins, and thus formed from chains of amino acids.
5. Lugol's reagent, also called Lugol's iodine, is a strong iodine solution that detects the presence of starch (turning a dark blue/black colour). This means it will not detect the presence of glucose, as this is monosaccharide rather than a polysaccharide like starch
An 8-year-old with diabetes is placed on an intermediate acting insulin and regular insulin before breakfast and before dinner. She will receive a snack of milk and cereal at bedtime. The snack will:
a)prevent late night hypoglycemia.
b)provide carbohydrates for immediate use.
c)help her regain lost weight.
d)<span>help her stay on her diet.</span>
Answer:
d.
Explanation:
they were needed to reduce carbon monoxide in our environment to sustain fresher air, less pollution and wildlife..
Answer:
The options including the genotypes are not included. On a general note, three genotypes that are possible for this trait including their phenotype is:
WW- Wide wings
Ww- Wide wings
ww- thin wings
Explanation:
This question involves a single gene coding for wings width in a certain bird. The allele for wide wings (W) is dominant over the allele for thin wings (w). This means that allele 'W' will always mask the expression of allele 'w' in a heterozygous state.
There are three possible genotypes considering this trait.
WW- homozygous dominant genotype which wings will be phenotypically wide because it contains a combination of same dominant alleles.
Ww- heterozygous dominant genotype which wings will be phenotypically wide because I this combination of alleles, the W allele will always express itself phenotypically over allele 'w' considering the dominance of W.
ww- homozygous recessive genotype which wings will be phenotype thin because it contains a combination of same recessive alleles.
N.B: a recessive trait will only be expressed in a homozygous condition.
Answer:
homeostasis keeps you alive ex: shivering produces heat in cold temperatures
Autotroph produce their own food ex: plant
Heterotroph consume other organisms: humans
Explanation:
