Molecules of Life
What are the 4 Macromolecules of life?
Proteins, Lipids, Carbohydrates, Nucleic Acids
What is the job of the nucleus?
Control the cell's activities
What are the 3 steps in the cell cycle?
-Interphase
-Mitosis
-Cytokinesis
What are the 4 main types of tissues?
-Epithelial
-Connective
-Muscle
-Nervous
What are the building blocks of Proteins?
Amino Acids
Active transport moves molecules from a low concentration to a high concentration through the use of energy.
Passive transport: molecules move from a high concentration to a low concentration through no energy use.
What are the 4 steps in Mitosis? (correct order)
-Metaphase
-Anaphase
-Telophase
What is the difference between simple and stratified?
Simple means 1 layer of tissue while stratified means multiple layers.
What simple carbohydrate is the main source of energy in the body?
Glucose
What is the job of centrioles?
They assist in cell division
Explain why DNA condenses from chromatin into chromosomes during prophase:
Chromosomes are easier to move during metaphase due to their organization.
Describe the type of tissue that lines the intestines (in detail).
Simple columnar tissue
What are enzymes?
Proteins that speed up chemical reactions.
How are microvilli and cilia different?
Microvilli are for nutrient absorption. They are also smaller and more numerous.
Cilia are larger and less numerous. They are used for movement.
Name the 2 specific types of Meiosis and what they produce.
Spermatogenesis: Sperm cells
Oogenesis: Ovum/Egg cells
Name the 2 types of epithelial glands and explain their differences.
Exocrine glands secrete substances outward and may be unicellular and multicellular.
Endocrine glands secrete substances within, into the interstitial space.
Name the 3 types of RNA and their functions:
mRNA: deliver code with protein building instructions.
tRNA: deliver amino acids needed to build proteins
rRNA: constructs proteins in the ribosome
What is the purpose of crossing over?
To create genetic diversity that increases chances of survival.