Question

question 5 (1 point)
eukaryotic and prokaryotic cells have some parts that are different. which are found only in a eukaryotic cell?

a membrane - bound organelles and a nucleus
b nucleus and organelles without a membrane
c cell membranes and organelles without membranes
d membrane - bound organelles and dna in the cytoplasm

question 6 (1 point)
why would you repeat an experiment over and over again?

a to test your results and conclude that you will get the same results every time
b to test a new variable
c because scientists are supposed to do experiments
d because it is recommended but not necessary

Explanation:

Question 5

Eukaryotic cells have a nucleus (membrane - bound) and other membrane - bound organelles (like mitochondria, endoplasmic reticulum). Prokaryotic cells lack a nucleus and membrane - bound organelles. Option a: membrane - bound organelles and a nucleus are unique to eukaryotes. Option b: prokaryotes have ribosomes (without membrane) and no nucleus (eukaryotes have nucleus). Option c: both prokaryotes and eukaryotes have cell membranes and non - membrane organelles (like ribosomes in prokaryotes). Option d: Eukaryotic DNA is in the nucleus, not cytoplasm (prokaryotic DNA is in cytoplasm).

Repeating an experiment tests result reliability. Option a: Repeating helps check if results are consistent (to conclude same results with valid procedure). Option b: Repeating same experiment doesn't test new variable (new variable needs new experimental design). Option c: Scientists do experiments for knowledge, not just to follow a rule of repetition. Option d: Repetition is necessary for reliable results, not just recommended.

Answer:

a. membrane - bound organelles and a nucleus

Question 6