3SW Midterm Review

Which organelles is found only in eukaryotic cells?

• Ribosomes

• Cell membrane

• cytoplasm

• nucleus

Bacteria are _________, so they lack a ________.

• prokaryotes, cell membrane

• prokaryotes, nuclear membrane

• eukaryotes, cell membrane

• eukaryotes, nuclearn membrane

Viruses need a _________ cell to reproduce.

• skin

• host

• prokaryotic

• eukaryotic

Stem cells can differntiate into any other type of cells because

• they have proteins

• can separate

• produce sugar

• they have specific genes activated

what is happening in the picture?

• energy formation and breakdown of food

• synthesis (creation) of proteins

• homeostasis (stability) and transport of molecules

• energy conversions

Active transport requires __________ and moves molecules from ________ to __________ concentration.

• ATP, high, low

• sugar, high, low

• ATP, low, high

• ATP, high, high

If every cell in your body has an identical copy of DNA, why do you have different types of cells??

• Each cell only has certain active parts

• Each cell has only a few chromosomes

• Each cell has different proteins that control the expression of specific genes

• Each cell can delete parts of its DNA

Viruses have a coat called a capsid that surrounds them. What do you think is the purpose of the capsid?

• to transport the virus

• to protect the virus

• to produce viruses

• to make proteins

DNA Replication is the process that

• transcribes DNA

• copies DNA

• translates DNA

• mutates DNA

In DNA an enzyme called DNA polymerase matches Adenine with

• Adenine

• Thymine

• Cytosine

• Guanine