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Ludmilka [50]
3 years ago
8

Yall please answer quickly!! I promise to give brainliest! merry Christmas (:

Biology
2 answers:
Snowcat [4.5K]3 years ago
7 0

Answer:

second is correct 2nd.

zaharov [31]3 years ago
3 0

Answer:

DNA is the cell's genetic material, contained in chromosomes within the cell nucleus and mitochondria. A chromosome contains many genes. A gene is a segment of DNA that provides the code to construct a protein. The DNA molecule is a long, coiled double helix that resembles a spiral staircase.

Therefore, the answer is the first one.

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Sunlight heats the ground, and the ground warms the nearby air. The warm air expands and rises, while cool air rushes in to take
kati45 [8]
C. Convection.
That is the process you are describing. 
5 0
3 years ago
Disulfide bonds are involved in maintaining ________ protein structure as well as the ________ level of protein structure exhibi
Whitepunk [10]

Answer:

tertiary; quaternary

Explanation:

The orientation of all the atoms of a protein in three dimensions represents its tertiary structure. It includes the folding of the polypeptide chains in a way that brings are far apart amino acids of its secondary structure close together. Various segments of a polypeptide chain interact to form tertiary structures and these segments are held together by different kinds of weak interactions.

However, disulfide cross-links between the segments of polypeptide chains also stabilize the tertiary structure of some proteins. Likewise, disulfide bonds also hold the protein subunits of some proteins together and thereby, contribute to the quaternary structure. For example, two light chains of an antibody are joined together by disulfide bonds.

4 0
3 years ago
On a field trip, a student in a marine biology class collects an organism that has differentiated organs, cell walls of cellulos
GenaCL600 [577]

Answer:

The answwer is letter E.

Explanation:

Embryos.  Because land plants evolved from aquatic green algae. The transition was easy because of the amount of traits  that allowed the survival of the specie. One of these traits was the embryo, which is so essential that every land plants are known as embryophytes.

4 0
4 years ago
Please help if you answer correctly i will give brainliest
Papessa [141]

Answer:

1) Chicken: Codominance

2) Zebra: Independent assortment

3) Flowers: Incomplete dominance

4) Dalmatian: Law of segregation

Explanation:  

Due to technical problems, you will find the complete explanation in the attached files

Download pdf
6 0
3 years ago
Explain the differences between a point mutation and a frameshift mutation.
Kisachek [45]

a point mutation only mutates and changes that particular spot in the DNA strand while a frameshift changes the whole strand by moving the bases either one forward or backward

6 0
3 years ago
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