CBA #1 Retest tutorial lesson

​Cell Transport

​Cell Transport

Cell transport is movement of materials across cell membranes.

​

Two Types:​

1. Passive transport

   ​

2. Active transport

Cell are constantly absorbing and releasing things into their surroundings.

The cell membrane controls what enters and exits the cell

The membrane is selectively permeable, which means it allows some things in and out of the cell - but not all things. (It's selective)

​The movement of substances across the cell membrane without using energy from the cell.

​Examples:

1. diffusion

2. facilitated diffusion

3. osmosis.

​​

​(does not require energy​)

​​Passive Transport

Multiple Choice

When substances are TOO large to move across the plasma membrane on their own, they can use ______ or _____ to diffuse across the cell membrane

• lipids, carbohydrates

• lipids, nucleic acids

• water, salt

• channel proteins, carrier proteins

Active Transport

 relies on the use of energy to move substances into and out of cells. Usually, molecules are traveling against a concentration gradient.

Protein pumps

Prokaryotes vs Eukaryotes

Labelling

Sort the following statements based on if the statement is talking about prokaryotes or eukaryotes

Drag labels to their correct position on the image

Unicellular organisms

Ribosomes are found in the cell

DNA is found in the cell

DNA is found in the nucleus

more complex structure

Labelling

Determine where the following organelles can be found (if the organelle can be found in more than one, place in the middle of the two columns).

Drag labels to their correct position on the image

Nucleoid

ER (endoplasmic reticulum)

Golgi Body

Chloroplast

Cell Wall

Multiple Choice

Which cell structure identifies a cell as a eukaryotic cell.

• nucleoid

• mitochondria

• nucleus

• cell membrane

Multiple Choice

Prokaryotic cells do not have…….

• membrane bound organelles

• cell membrane

• DNA or RNA

• life

Match

Match the following

• Helps process proteins and transports them

• Digests material in cell

• Packages material for cell

• Jelly-like fluid that fills the cell.

• Protects the DNA

E.R.

Lysosome

Golgi Bodies

Cytoplasm

Nucleus

• E.R.

• Lysosome

• Golgi Bodies

• Cytoplasm

• Nucleus

Match

Match the following

• Simple cell, lacks a nucleus

• Complex cell, contains membrane-bound organelles

• All Cells contain:

• The Genetic Molecule

• Something all Cells must do

Prokaryote

Eukaryote

Cell Membrane, Cytoplasm, DNA

DNA

Cell Division

• Prokaryote

• Eukaryote

• Cell Membrane, Cytoplasm, DNA

• DNA

• Cell Division

Multiple Choice

Which of the following best describe the difference between these two types of cells?

• Eukaryotes are always much larger than prokaryotes

• Eukaryotes contain a nucleus and prokaryotes do not

• Prokaryotes are always much larger than eukaryotes

• Prokaryotes contain a nucleus and eukaryotes do not

Multiple Choice

Endosymbiosis is the theory that explains the

• Origin of membrane bound organelles

• Origin of prokaryotic life

• Origin of all cells on earth

• Origin of the cell membrane

Multiple Choice

Which statement below provides evidence to support the endosymbiotic theory?

• Membranes of the endoplasmic reticulum and Golgi apparatus are similar to the plasma membrane.

• Both eukaryotes and prokaryotes contain DNA.

• Mitochondria and chloroplasts contain DNA similar to prokaryotic DNA.

• Both eukaryotes and prokaryotes contain ribosomes.

Multiple Choice

This is an example of

• Cell

• Tissue

• Organ

• Organ System

Multiple Choice

A group of cells that have similar functions? Examples are nervous, epithelial, muscle, and connective

• Cells

• Organs

• Tissue

• Atoms

​Biology, Lesson 1 Biomolecules LO: compare the functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids.


TEKS: Bio.9A Compare the functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids

​Unit 1 Biomolecules

Match

Match the following

• Builds muscle

• Makes up the cell membrane.

• Stores genetic information.

• Short term energy

• Proteins

Protein

Lipid

Nucleic Acid

Carbohydrates

Speeds up chemical reactions

• Protein

• Lipid

• Nucleic Acid

• Carbohydrates

• Speeds up chemical reactions

Multiple Choice

A student creates a Venn diagram comparing and contrasting carbohydrates to lipids. Which function below should be recorded in the shared space of the Venn diagram?

• Structural Support for cell walls

• Hormone Production

• Catalyst for chemical reactions

• Energy storage

Multiple Choice

Which statement compare a function of lipid and protein in a human cell?

• Proteins provide energy for cellular processes. Lipids catalyze chemical reactions in the cell.

• Proteins catalyze chemical reactions in the cell. Lipids allow for transport of certain molecules into and out of the cell.

• Proteins allow for transport into and out of the cell. Lipids store genetic information

• Proteins store genetic information. Lipids provide energy for cellular processes.