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Svet_ta [14]
3 years ago
13

Which statement best describes the breakdown of food in the digestive system?

Biology
2 answers:
Savatey [412]3 years ago
5 0

Answer:

B. Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach. Explanation:I took the test

Fittoniya [83]3 years ago
4 0
Hello,

Here is your answer:

The proper answer to your question is option B "starts at mouth and protein digestion".

Your answer is B.

If you need anymore help feel free to ask me!

Hope this helps!
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Which occurs during transcription?
Zigmanuir [339]
D.  mRNA is synthesized from a strand of DNA. 

Transcription, hence the root script, means to write. This is the creation of the mRNA "messenger" information.
4 0
3 years ago
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A woman consumes 500 grams of carbohydrates, 30 grams of protein, and 75 grams of fat in one day. how many total kcalories has s
DedPeter [7]
To calculate the energy offered from food, multiply the number of grams of protein, carbohydrate, and fat by 4, 4, and 9, respectively.
Then add the results together.

Given: 500 grams of carbohydrates, 30 grams of protein, and 75 grams of fat in one day.

500 grams x 4 kcal/g = 2000 kcal
30 grams x 4 kcal/g = 120 kcal
75 grams x 9 kcal/g = 675 kcal
= 2795 kcal

From this data, you can calculate the percentage of k calories each of the energy nutrients give to the total.
Solution:

2000/2795 * 100% = 72% from carbohydrates
120/2795 * 100% = 4% from protein
675/2795 * 100% = 24% from fat
Total: 100%
6 0
3 years ago
Which of Mendel's postulates do these families demonstrate? Select all that apply. Select all that apply. Unit factors exist in
elena-s [515]

Answer:

If the question is referring to Mendel's postulates, all options are correct

Explanation:

Gregor Mendel discovered that certain components he called UNIT FACTORS determine inheritance. This unit factors were later described to be genes in modern genetics. He discovered that an organism receives two forms of this unit factors from each parent, which he called ALLELES. In his experiments, he observed that one of the pair of alleles have the ability to mask the expression of its variant pair. He called the allele that masks, DOMINANT allele while the allele that is masked, RECESSIVE allele.

During his cross experiment, he discovered that the alleles of a gene (unit factor) separates into gametes, he called this LAW OF SEGREGATION. He notably discovered in his cross involving two different characters that the segregation of the alleles of one gene into gametes does not influence the segregation of the alleles of the other gene. He termed this his LAW OF INDEPENDENT ASSORTMENT.

7 0
3 years ago
Which of the following statements about excision repair is correct?
maxonik [38]

Answer:

a. True, b. False, c.True, d. True

Explanation:

a. Base excision repair is started by a DNA glycosylase  that recognizes the changes and removes the altered base by cleavage of the glycosidic bond binding the base and the deoxyribose sugar together.

b. Nucleotide excision repair works by a cut-and patch mechanism that removes their heavy lesions, including pyrimidine dimers and nucleotides . Endonucleases are responsible for the lesion of the damaged strand.

c. Nucleotide excision repair  is initiated by the proteins namely UvrA, UvrC, and UvrB in Escherichia coli.

-UvrD (helicase II) later removes the damaged strand

-DNA polymerase I (PolI) fills in the resulting gap.

d. DNA glycolases removes the damaged nitrogenous base.

-It leaves the sugar-phosphate backbone intact and thus creating an  apurinic/apyrimidinic site, which is commonly referred to as an AP site.

e. Xeroderma pigmentosum complementation group A(XPA)

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4 0
3 years ago
Would you expect the resting heart rate of an athlete to be higher or lower than someone who doesn't work out?​
Lina20 [59]

Answer:

Lower

Explanation:

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4 0
3 years ago
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