Question

directions: answer all questions. use complete sentences where asked. for mu circle the correct answer.
day 1 - dna, genes & proteins

1. why must cell division be controlled?

a. to make cells divide faster
b. to create mutations
c. to prevent damaged cells from dividing
d. to remove dna

1. where is dna found in a eukaryotic cell?

a. cytoplasm
b. ribosome
c. nucleus
d. cell membrane

1. what is a gene?

a. a type of cell
b. a protein
c. a section of dna that codes for a protein
d. a mutation

1. what do proteins do in cells?

a. store dna
b. control cell behavior
c. cause mutations
d. divide the cell

1. why are proteins important for cells?

a. they make dna
b. they store energy
c. they control growth, repair, and division
d. they create checkpoints

Explanation:

1. Uncontrolled cell division can lead to damaged or abnormal cells multiplying uncontrollably, so regulation prevents this.
2. Eukaryotic cells have a membrane-bound nucleus that houses the cell's genetic material (DNA).
3. A gene is a specific segment of DNA that contains the instructions to produce a particular protein.
4. Proteins have a wide range of functions in cells, including regulating cell processes like growth, repair, and division.

Answer:

1. C. To prevent damaged cells from dividing
2. C. Nucleus
3. C. A section of DNA that codes for a protein
4. C. They control growth, repair, and division