Unit 1
Our body maintains homeostasis by using ______ loops. What are the two different types of this process?
Feedback, positive and negative
What is the chemical formula for glucose?
C6H12O6 (6 carbons. 12 hydrogens, 6 oxygens)
What macromolecule makes up the most of the cell membrane?
lipids (phospholipids)
Why do our cells need to do cellular respiration
to make energy (ATP)
DNA is in this shape
Double Helix
How many of the 7 or 8 characteristics of life do something need to have in order to be considered living?
all of them
What is the polymer of a protein called?
polypeptide
The diffusion of water through the cell membrane is called ____________.
osmosis
Which organelles do photosynthesis/cellular respiration
chloroplast, mitchondria
What are two enzymes that help in DNA replication?
Helicase, and DNA polymerase
What does CER stand for?
Claim, Evidence, Reasoning
When does dehydration synthesis occur?
When two monomers/polymers are combined together to form a polymer/larger polymer
What is the purpose of active transport? (correctly use the term concentration gradient when answering)
To move against the concentration gradient (move things low to high)
What is the difference between an autotroph vs. a heterotroph
Autotroph: makes their own food from outside energy (sun)
Heterotroph: have to consume food to make energy
What are the three parts of a nucleotide
Ribose sugar, phosphate group, nitrogenous base
Organs are made of these biological levels of organizations (name all of them)
Atoms, molecules, organelles, cells, tissues.
What are the four monomers and what polymers do they make?
amino acid-Protein; monosaccharides-polysaccharides (carbs); fatty acid-lipids; nucleotides- nucleic acids
What are the two main differences (in terms of size and structure) between prokaryotic and eukaryotic cells.
Prokaryotic-smaller and no nucleus/less organelles
Write the chemical formula for photosynthesis and cellular respiration.
H2O + CO2 + sunlight --> C6H12O6 + O2. (photosynthesis)
CR: O2 + C6H12O6 --> H2O + CO2
What are the names of A, T, C, and G stand for in DNA
Adinine, Thymine, Cytosine, and Guanine
Correctly identify all of these feedback loops:
Sweating, Contractions (giving birth), Global warming
negative, positive, positive
There are many different examples of proteins. What do enzymes and hormones do for our bodies?
Enzymes-speed up chemical reactions
Hormones- use chemicals to send signals throughout the body.
What are the three parts to cell theory?
All livings things are made of cells
All cells come from other cells
All cells carry out the life processes
What are the three parts to cellular respiration (starting in the cytoplasm and ending in the mitochondria)
Glycolysis, Kreb's cycle, Electron Transport Chain
If one side of DNA strand is TTAAGGCC, what would be the two strands of DNA made from DNA replication.
TTAAGGCC TTAAGGCC
AATTCCGG AATTCCGG