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Firdavs [7]
3 years ago
8

We get wood from trees. Tree - wood - ________. What word BEST fills in the blank and describes what makes up wood? A) atoms B)

cells C) plants D) toothpicks
Biology
2 answers:
NeX [460]3 years ago
4 0
B because it’s talking about the tree itself. Saying that it’s plants would divert it to a different plant. The cells of the wood is what makes the tree and is relevant to the question
allsm [11]3 years ago
3 0

Answer:

B

Explanation:

I just did the question its right

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Will mark brainalist!!
fenix001 [56]

Answer:

1 is a phenotype

2 is a genotype

p reps the given allele of one parent

6 0
3 years ago
Read 2 more answers
Name the four levels of structure of proteins and explain what each level is responsible for adding to the protein structure.
erik [133]
Tertiary Structure<span> - refers to the comprehensive 3-D structure of the polypeptide chain of a </span>protein<span>. There are several types of bonds and forces that hold a protein in its tertiary structure. </span>Hydrophobic interactions<span> greatly contribute to the folding and shaping of a protein. The "R" group of the amino acid is either hydrophobic or hydrophilic. The amino acids with hydrophilic "R" groups will seek contact with their aqueous environment, while amino acids with hydrophobic "R" groups will seek to avoid water and position themselves towards the center of the protein. </span>Hydrogen bonding<span> in the polypeptide chain and between amino acid "R" groups helps to stabilize protein structure by holding the protein in the shape established by the hydrophobic interactions. Due to protein folding, </span>ionic bonding<span> can occur between the positively and negatively charged "R" groups that come in close contact with one another. Folding can also result in covalent bonding between the "R" groups of cysteine amino acids. This type of bonding forms what is called a </span>disulfide bridge<span>. </span>Primary Structure - describes the unique order in which amino acids are linked together to form a protein. Proteins are constructed from a set of 20 amino acids. <span>All amino acids have the alpha carbon bonded to a hydrogen atom, carboxyl group, and amino group. The </span>"R" group<span> varies among </span>amino acids<span> and determines the differences between these protein monomers. The amino acid sequence of a protein is determined by the information found in the cellular</span>genetic code<span>. The order of amino acids in a polypeptide chain is unique and specific to a particular protein. Altering a single amino acid causes a </span>gene mutation, which most often results in a non-functioning protein.
<span>Secondary Structure - refers to the coiling or folding of a polypeptide chain that gives the protein its 3-D shape. There are two types of secondary structures observed in proteins. One type is the alpha (α) helix structure. This structure resembles a coiled spring and is secured by hydrogen bonding in the polypeptide chain. The second type of secondary structure in proteins is the beta (β) pleated sheet. This structure appears to be folded or pleated and is held together by hydrogen bonding between polypeptide units of the folded chain that lie adjacent to one another.
</span><span>Quaternary Structure - refers to the structure of a protein macromolecule formed by interactions between multiple polypeptide chains. Each polypeptide chain is referred to as a subunit. Proteins with quaternary structure may consist of more than one of the same type of protein subunit. They may also be composed of different subunits. Hemoglobin is an example of a protein with quaternary structure. Hemoglobin, found in the blood, is an iron-containing protein that binds oxygen molecules. It contains four subunits: two alpha subunits and two beta subunits.

I hope this helped you find the answer you were looking for!

</span>
3 0
2 years ago
When we extracted our own DNA last Friday, how did the things we used (Gatorade, alcohol, soap) relate to the things that are us
user100 [1]

Answer:

Soap solution functions to dissolve the cell membranes, alcohol is used to precipitate DNA, and Gatorade is a isotonic solution.

Explanation:

In the DNA extraction protocols, the cell membranes that are formed by lipidic bilayers can be dissolved by using detergent solutions that are functionally analog to soap solution, shampoo, etc. On the other hand, alcohol enables to precipitate DNA (because DNA is not soluble in alcohol), while proteins and other cellular components remain in the extraction solution. Finally, Gatorade is a isotonic solution that may be used to prevent the cells from lysing.

8 0
3 years ago
if two chromosome have equal length and size , and different in gene number would severity of chromosomal abnormalities in this
-Dominant- [34]

Answer:

Unequal.

Explanation:

The severity of chromosomal abnormalities in these two chromosome are unequal that are equal in length and size but unequal in gene number are because the gene number are different from one another. If the size of gene increase or decrease from the normal range then it will leads to chromosomal abnormalities in the cell so the cells that has normal gene number has normal chromosome as compared to those cells where abnormal gene is present so the chromosomes are abnormal.

6 0
2 years ago
Differentiate between:<br>2) Root system and Shoot system​
SVETLANKA909090 [29]

Root system represents the underground part of the plant. It includes roots, tubers, and rhizoids.

Explanation:

Shoot system refers to the components of a plant, which grows above the ground. It includes stems, leaves, flowers, seeds, fruit, and buds.

5 0
3 years ago
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