Life Is Cellular

Which of the following statements supports the cell theory as it is stated today?

• Not all cells are alive.

• Cells must contain a nucleus.

• All abiotic are composed of more than one cell

• Cells come from preexisting cells through cell division.

Answer explanation

The cell theory states that cells come from preexisting cells through cell division.

What is the basic structural and functional unit of all living things? 

• atom

• cell

• molecule

• human

Answer explanation

The basic structural and functional unit of all living things is a cell. It is the smallest unit of life and performs all the necessary functions for an organism to survive.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

All of this type of cells are single celled. 

• animal

• prokaryotic

• plant

• eukariotic

Answer explanation

Prokaryotic cells are single-celled organisms.

Tags

NGSS.MS-LS1-1

Which of the following contain ribosomes, cytoplasm, DNA and cell membrane?

• prokaryotic

• eukaryotic

• both

• none

Answer explanation

Both prokaryotic and eukaryotic cells contain ribosomes, cytoplasm, DNA, and a cell membrane. Therefore, the correct answer is 'both'.

Tags

NGSS.MS-LS1-2

ALL living cells have this in common

• Nucleus

• Cell Membrane

• Cell Wall

• Mitochondria

Answer explanation

ALL living cells have a Cell Membrane in common.

How are prokaryotes and eukaryotes different?

• prokaryotes are larger

• eukaryotes have a nucleus

• eukaryotes are simpler

• prokaryotes are more complex

Answer explanation

Prokaryotes and eukaryotes differ in the presence of a nucleus. Eukaryotes have a nucleus, while prokaryotes do not.

Which of the following is found inside a prokaryote?

• cytoplasm

• DNA

• ribosomes

• all of these

Answer explanation

All of these are found inside a prokaryote. The cytoplasm, DNA, and ribosomes are essential components of a prokaryotic cell.

Which does only eukaryotic cells contain?

• nucleus

• DNA

• cell membrane

• ribosomes

Answer explanation

Eukaryotic cells exclusively contain a nucleus, which is absent in prokaryotic cells. The nucleus houses the DNA and controls cellular activities.

Prokaryotic cells do not have…….

• membrane bound organelles

• cell membrane

• DNA or RNA

• ribosomes

Answer explanation

Prokaryotic cells lack membrane bound organelles, such as mitochondria or endoplasmic reticulum. This distinguishes them from eukaryotic cells.

Cells are the smallest unit of life that can _____ independently.  

• replicate

• sleep

• reprimand

• move

Answer explanation

Cells are capable of independent replication, making them the smallest unit of life.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2