Chapter 3 True or false

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All organisms are made of more than one cell

False

Animal cells have chloroplasts, organelles that capture light energy from the cell and use it to make food

False

Compared to eukaryotic cells, prokaryotic cells are very complex

False

DNA is located in the nucleus of prokaryotic cells

False

Early microscopes created by Leeuwenhoek were almost as strong as modern light microscopes

False

Endocytosis removes large molecules from the cell

False

Facilitated diffusion does not require any help from other substances

False

In diffusion, substances move from an area of lower concentration to an area of higher concentration

False

Ions can easily flow through a carrier protein

False

Passive transport needs energy

False

Prokaryotic cells have a nucleus

False

Roundworms have organ system level organization, in which groups of organs work together to do a specific job

False

The cytoplasm essentially acts as a "skeleton" inside the cell

False

The flagella on your lungs sweep foreign particles and mucus toward the mouth and nose

False

The plasma membrane is a single phospholipid layer that supports and protects a cell and controls what enters and leaves it

False

The sodium potassium pump is a type of channel protein

False

The water-hating hydrophobic tails of the phospholipid bilayer face the outside of the cell membrane

False

Viruses are similar to prokaryotic cells

False

Centrioles help organize chromosomes before cell division

True

Channel and carrier proteins are both transport proteins

True

Channel proteins form small "holes" in the plasma membrane

True

Diffusion does not require any help from other molecules

True

Diffusion is the osmosis of water

True

Endocytosis and exocytosis are types of vesicle transport

True

For cells, a smaller size is more efficient

True

In cell-level organization, different cells are specialized for different functions

True

Many of the biochemical reactions of the cell occur in the cytoplasm

True

Mitochondria contains its own DNA

True

Most cells are about the size of a period at the end of a sentence

True

Observation of cork helped in tge discovery of cells

True

Organelles allow eukaryotic cells to carry out more functions than prokaryotic cells

True

Organelles are located within the cytoplasm

True

Plant cells have special structures that are not found in animal cells, including a cell membrane, a large central vacuole, and plastids

True

Proteins are made on ribosomes

True

Ribosomes can be found attached to the endoplasmic recticulum

True

Small hydrophobic molecules can easily pass through the plasma membrane

True

The cytoskeleton is made from thread-like filaments and fibers

True

The plasma membrane controls what enters and leaves the cell

True

The plasma membrane forms the physical boundary between the cell and its environment

True

Transport of substances across the cell membrane helps maintain homeostasis by keeping the cell's conditions within normal ranges

True

Viruses are considered living organisms

True

ATP is made in the mitochondria

True

Active transport needs energy

True

All cells have a plasma membrane, cytoplasm, and ribosomes

True

Carrier proteins change shape when they transport substances

True


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