Unit 2- Finals Review 2022
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (16 张)
What is the nucleus made up of?
Protons and Neotrons
What is in the space around the nucleus?
Electrons
How do enzymes affect reactions?
Catalyze / speed up
What type of electron forms bonds?
Valence
what is RNA made of?
nucleotides
-saccaride means
carbohydrate (sugar)
Function of proteins (list 3)
• build tissues such as bone and muscle 2.. control the rate of reactions and regulate cell processes 3.. help to fight disease
what does catalyze mean?
to speed up
What is protein made of?
Amino acids
Do all enzymes work inside cells?
no
Which of the four macromolecules is the main source of energy for living things?
carbohydrates
Ionic versus covalent bond
A covalent bond is when they share an electron and an ionic bond is when they donate an electron because they have different electronegativity
What is the term used to describe the energy needed to get a reaction started?
D. activation energy
What type of ion forms when an atom loses electrons?
positvive
What type of ion forms when an atom gains electrons?
negative
what is a valence electron?
it is in the outermost shell, and available to from bonds