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sp2606 [1]
3 years ago
7

Hi! I hope your day is going great. I need some help, please. :)

Biology
2 answers:
castortr0y [4]3 years ago
6 0

Answer:

lysosomes are called the scavengers of the cell

lysosomes digest while vacuole stores food digested by it

Explanation:

hope it helps

mark me brainliest plzz

Liula [17]3 years ago
5 0

Answer:

They both are encased organelle compartments inside a cell but A vacuole is the vesicle found within a cytoplasm of a cell. The vacuole contains some fluid. A lysosome, on the other hand, is an organelle found within the cytoplasm of eukaryotic cells

you are welcome

:) have a good day

thank you for giving me brainliest

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Please help its due in a hour!!!!!
garri49 [273]

Answer:

1. The difference between the normal hemoglobin protein DNA sequence and the sickle cell hemoglobin DNA sequence is a base to base shift, in this case adenine (GAG) to thymine (GTG).

2. The difference affects the amino acid sequence of the protein by replacing glutamic acid (Glu) with valine (Val).

Explanation:

In sickle cell anemia, a change in the DNA nucleotide sequence is observed, where adenine is substituted by thymine, whose expression is the change in the amino acid sequence of globine β, incorporating valine instead of glutamic acid. This represents a molecular mutation - point mutation - by subtitution, which corresponds to missense mutation.

<u>Normal hemoglobin protein in a RBC</u>

DNA                 CTG ACT CCT GAG GAG AAG TCT

Amino acids     Leu  Thr   Pro   Glu   Glu   Lys   Ser

<u>Sickle cell hemoglobin protein in a RBC</u>

DNA                 CTG ACT CCT <em>GTG</em> GAG AAG TCT

Amino acids     Leu  Thr   Pro   <em>Val</em>   Glu   Lys   Ser

When GAG is transcribed to mRNA, the CUC codon is obtained, which codes for glutamic acid. Thymine substitution causes the DNA sequence to change to GTG, which is transcribed as CAC, the codon that encodes the amino acid valine. The <u>change from glutamic acid to valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease</u>.

6 0
3 years ago
What are two reasons why molecules will not diffuse into cells?
AlekseyPX
Molecules are defined as the smallest particles of a chemical compound or an element, and are made up of atoms. Cells are made up of semi permiable membranes that only allow selected materials to move in or out of the cell, therefore due to the big size of molecules compared to atoms the membrane doesn't allow their passage in the cell. Therefore the cell doesn't allow most molecules to diffuse passively to the cell. Secondly, molecules that can enter the cell requires specific carriers carriers that will enable entry of small molecules in the cell.
5 0
3 years ago
When DNA is copied sometimes a new incorrect base pairing appears within the structure of a new DNA molecule replacing original
statuscvo [17]
I believe you meant to say is this mistake called a base pair and if that is your question then no. it would be called Mutation. But you can double check that answer.
6 0
3 years ago
Which of these is a function of the lymphatic system? A. production of antibodies B. transport of fat-soluble vitamins to the bl
Marysya12 [62]
C is your answer

hopes this helps !!
3 0
3 years ago
Read 2 more answers
What are 3 molecules that require active transport?
Ne4ueva [31]

Answer:

ions, glucose and amino acids i think

don't get mad

Explanation:

3 0
3 years ago
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