According to the Cell Theory, what is the source of all new cells?

compounds of carbon, oxygen, and nitrogen

individual cell parts, such as mittochondria

Which type of cell structure is included in Prokaryotic cells and Eukaryotic cells?

a cell membrane made of a lipid bilayer

The cell membrane acts as a barrier between the cell and its environment. Which best describes the type of barrier that the cell membrane forms?

permeable but selective, like a wall with gates

very permeable, like a fishing net

permeable only to water, like a very fine net

What conclusion about the cells does the data in the table support?

Cell 1 is prokaryotic; Cell 2 is from an animal.

Cell 1 is from a plant; Cell 2 is from an animal.

Cell 1 is prokaryotic; Cell 2 is from a plant.

Cell 1 is eukaryotic; Cell 2 is prokaryotic.

Which of the following activities occurs in both prokaryotic cells and eukaryotic cells?

Proteins are assembled on ribosomes.

A large central vacuole stores DNA and RNA.

Mitochondria provide energy for cell processes.

Chloroplasts capture and transform the energy of sunlight.

Nayla is planning an investigation on the role of osmosis in maintaining homeostasis . She plans to study red blood cells in a liquid suspension, similar to blood plasma. For Nayla to observe the greatest variety of osmotic activity in the red blood cells, she should test the effect of which of these independent variables?

salt concentration of the liquid that surrounds the red blood cells

temperature of the liquid suspension

oxygen concentration of the red blood cells

the number of red blood cells per liter of the liquid suspension

One plant receives sufficient water and has straight, upright stems and firm leaves. Another plant that was grown in dry soil, and that has wilted stems and leaves. Which organelle is responsible for this observation?

the central vacuole, because it stores water and provides support

the nucleus, because chromosomes thicken in water

the cell membrane, because water diffuses across it

chloroplasts, because photosynthesis depends on water volume

Which of the following describes the structures that have the most direct role in synthesizing proteins?

small structures that are located within the cytoplasm or attached to the endoplasmic reticulum

membrane-bound structures that are filled with enzymes

long, thin structures that are attached to the inner surface of the cells

sac-like structures that are released into the cytoplasm from the Golgi apparatus

In the 1830s, Matthias Schleiden examined the structure of plant cells and Theodor Schwann examined the structure of animal cells. After discussing their findings, they proposed an early version of the cell theory. Which of the following statements best describes why developing the cell theory was a scientific process?

They made observations that could be repeated by other scientists.

They created a hypothesis that was believed by other scientists.

They provided procedures that were approved by other scientists.

They formed a conclusion that was immediately accepted by other scientists.

One of the most important properties of water for living organisms is its role as an effective solvent . Which of the following occurs because of this property of water?

the transport of compounds throughout an organism

the production of energy to power cellular processes

the maintenance of constant internal cellular temperatures

the protection of organisms that live in aquatic environments

Which of the following describes an organelle that would be observed in plant cells but not animal cells?

a rigid outer structure composed of cellulose and other materials

a small structure floating in the cytoplasm composed of RNA and proteins

a network of protein-based tubes that develop within the cytoplasm

a flexible outer structure of lipids that contains embedded proteins

Students are learning about the contributions that resulted in the development of the cell theory and comparing differences between scientific theories and scientific laws. Which of the following statements describes why scientists consider the cell theory a scientific theory rather than a scientific law ?

because it is a well-supported explanation about the existence and presence of cells.

because it is a description of specific situations in which cells can be observed.

because it is an interpretation of changes t o the structure of cells during their life.

because it is a well-established set of predictions about the growth and evolution of cells.

Vacuoles are membrane-bound sacs found within the cytoplasm of both plant and animal cells. Which of the following best describes how the vacuoles in plant cells differ from the vacuoles in animal cells?

Vacuoles in plant cells are larger than vacuoles in animal cells because they contain greater amounts of water that help support the cells.

Vacuoles in plant cells are larger than vacuoles in animal cells because they contain pigments that are vital to the process of photosynthesis.

Vacuoles in plant cells are smaller and more numerous than vacuoles in animal cells because they contain molecules that fight off foreign invaders.

Vacuoles in plant cells are smaller and stacked closer together than vacuoles in animal cells because they have proteins that transport materials throughout the cells.

The cell theory was first developed in the 1830s. Which statement correctly describes one part of the cell theory?

The cell is the basic functional structure in all organisms.

Some cell structures appear spontaneously.

All organisms are made of more than one cell.

Some groups of cells can join together to form a new kind of cell.

a small structure floating in the cytoplasm composed of RNA and proteins

mitochondrion (plural of mitochondria)

Cell Practice Test Quiz

32 questions

Show all answers

1.

MATCH QUESTION

1 min • 1 pt

Match the following

process that requires a transport protein

facilitated diffusion

movement down a concentration gradient

active transport

movement of water across a semipermeable membrane

passive transport

movement up a concentration gradient

Endocytosis

cell taking in large particles

osmosis

2.

MATCH QUESTION

1 min • 1 pt

Match the following

a cell vacuole is released from the cell

endocytosis

movement of molecules from low to high

active transport

difference in the concentration of a sub

exocytosis

movement of water across a semipermeable membrane

concentration gradient

process of taking in materials by engulfing them

osmosis

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which organelles contain enzymes that break down old cell parts?

lysosomes

vacuoles

chlorplasts

golgi

endoplasmic reticulum

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which organelles are unique to plant cells?

ribosomes

mitochondria

chloroplasts

central vacuoles

golgi

Match the following

Groups:

(a) Active transport

,

(b) Passive Transport

,

(c) Both

High to Low

Maintains Homeostasis

Diffusion

Endocytosis

Facilitated diffusion

No Energy Required

Exocytosis

Requires Energy

Low to High

Osmosis

Transport of nutrients and wastes

Protein Pumps

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which invention played the biggest role in the discovery of cells by early scientists?

magnifying glass

transmission electron microscope

eyeglasses

light microscope

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the solutions in the image has a hypertonic concentration of solute?

the sugar water

the distilled water

the egg

neither

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Cell Practice Test

Match the following

Match the following

Which organelles contain enzymes that break down old cell parts?

Which organelles are unique to plant cells?

Match the following

Which invention played the biggest role in the discovery of cells by early scientists?

Which of the solutions in the image has a hypertonic concentration of solute?

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What am I?

What am I?

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