PLS HELP ILL GIVE BRAINLIST 2. What characteristics are shared by most cells?

a. Most cells have membrane-bound organelles and a nucleus.

b. Most cells contain cytoplasm, are enclosed by a membrane, and have a nucleus. Most cells are microscopic, enclosed by a membrane, and contain cytoplasm.

c. Most cells are microscopic, enclosed by a membrane, and contain cytoplasm.

d. Most cells can be seen by the unaided eye and are enclosed by a membrane.​

Explanation:

Ans. B

* I am not sure about this answer, if I am wrong pls correct my mistake.

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.