Scientists
Who was the first person to describe the word cells? Hint - he first looked at cork under the microscope
Robert Hooke
Bond that forms when atoms transfer(give or take) electrons
Ionic
What does the atomic number tell us?
The number of protons
What type of molecules have carbon and hydrogen?
organic
True/False - Water has high surface tension (Occurs when molecules at water’s surface crowd together, producing a strong layer as they are pulled downward)
True
Who was one of the first scientists to prove spontaneous generation is incorrect, and showed support of the germ theory?
Francesco Redi
When do hydrogen bonds form?
When atoms have slight polar attractions (positive and negative end)
What does the atomic mass/mass number tell us?
Number or protons plus neutrons
Proteins, carbs, lipids, nucleic acids
What can denature a protein?
High heat, change in pH, chemicals
“animalicules” or “little animals”
When do covalent bonds form?
When atoms share electrons
How do you know how many electrons are in a neutral atom?
They are equal to protons
What is hydrolysis
Splitting a polymers into monomers by adding water.
What is the main function of lipids (fats?)
Insulation, energy storage
What is Alexander Fleming known for?
Discovering antibiotics/penicillin/father of antibiotics
What are ions?
an atom that has received or donated an electron, became electrically charged
If the atomic mass is equal to 50, and the atomic number is 30, how many neutrons are there?
20
What are the building blocks of protein?
amino acids (20)
Where are the following found?
Glycogen - mammal cells
Chitin - exoskeletons/fungi
Cellulose - plants
When coming up with the idea of the cell theory, which part of the cell theory did these scientist help prove?Matthias Schleiden, Theodor Schwann and Rudolf Virchow
1. Schleiden - plants are made of cells
2. Schwann - plants and animals are made of cells
3. Virchow - every cell comes from preexisting cells
Which type of bond is the strongest and which is the weakest?
Covalent, hydrogen
What are the 3 subatomic particles and where are they located?
protons - nucleus, neutrons - nucleus, electrons - valence shell, determine how an atom reacts
What are the three parts of a nucleotide?
5 carbon sugar, nitrogen base, phosphate group
How is DNA and RNA different?
DNA - deoxyribose, double stranded, thymine
RNA - ribose, single stranded, uracil