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Anon25 [30]
3 years ago
12

Which statement is true?

Biology
2 answers:
VashaNatasha [74]3 years ago
3 0
Plant cells range in size from 10 to 100 nm
Dvinal [7]3 years ago
3 0
Plant cells range in size from 10 to 100 mm
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How many glucose molecules can be formed by 6 molecules of carbon
Hoochie [10]

Answer:

1

Explanation:

"Six carbon dioxide molecules (CO2) are required to create one glucose molecule (C6H12O6) because carbon dioxide has one carbon per molecule, while glucose molecules have six carbons."

3 0
3 years ago
Plants have chloroplasts and mitochondria. What is the purpose of mitochondria when a cell already has chloroplasts?
slega [8]

Answer:

To turn sugars into energy

Explanation:

\bf{ \underline{ \large{Functions \:  of  \: Mitochondria}}}

  • Mitochondria are main sites of aerobic respiration. They are miniature biochemical factories where food stuffs are completely oxidised to carbon dioxide and water.
  • The energy (ATP) produced in the mitochondria helps to perform various energy requiring processes.
  • Because of the formation of ATP in mitochondria it is called power house of the cell.

\bf{ \underline{ \large{Functions \:  of  \: Chloroplast}}}

  • Photosynthesis: Light reaction (in thylakoids), Dark reaction (in stroma).
  • Storage of starch.
4 0
2 years ago
The most common food-borne illness in the United States results from ____________ infection. This infection is spread by contact
kirill [66]
Uncooked food chicken is mainly where u get this from
4 0
3 years ago
Which of the following statement(s) is/are TRUE regarding protein secondary structures? A. Not all polypeptide sequences can ado
Snezhnost [94]

Answer:

D. All of the statements are true.

Explanation:

Alpha helical secondary structure of proteins is stabilized by hydrogen bonding. The hydrogen bond is formed between a hydrogen atom attached to the electronegative N atom of the peptide bond and oxygen atom of the carboxyl group of the fourth amino acid towards the N terminal of that peptide bond. This internal hydrogen bonding makes the alpha-helices stable structures.  

The N atom of protein is a part of a rigid ring and does not permit the free rotation and does not have the H atom to participate in the internal hydrogen bonding. It rather produces a kink in the alpha helix. Glycine has one H atom as its R group and its smaller size makes the alpha helix to assume a coiled structure. Therefore, proline and glycine destabilize the alpha-helices. Alanine, leucine, lysine, etc allow the optimum hydrogen bonding of alpha helices and are frequently found in the alpha-helices. The polypeptide backbone in alpha-helices assumes a helical structure. In beta conformation, the backbone of the polypeptide is extended into the zigzag pattern line a waffle fry.  

Beta sheets are stabilized by hydrogen bonds formed between the adjacent parts of the polypeptide chains. The adjacent polypeptide chains may be present in parallel or antiparallel pattern, depending on the same or opposite orientation of amino and carboxyl groups. The antiparallel conformation has opposite amino-to-carboxyl orientations, allowing the formation of linear hydrogen bonds between the adjacent polypeptides which in turn makes these confirmations more stable.

6 0
3 years ago
DNA is made of two chains of nucleotides. Which type of bonds hold the chains together?
docker41 [41]

Protien bonds are what hold the base pairs

8 0
3 years ago
Read 2 more answers
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