What are the 3 parts of the RNA nucleotide?

ribose sugar, phosphate, base (GCAU)

5-C sugar, phosphate group, nitrogen base

are the monomers of DNA and RNA

List that includes ONLY carbohydrates

glucose, fructose, Starch, cellulose

The one that is unchanged, used to compare (normal group)

the amount of activation energy needed to start the reaction

Why do enzymes denature?

High temperature and wrong pH breaks bonds

Which statement best describes the effect of High specific heat?

The temp. of water does not change; stable

The term substrate refers to ...

the molecule the enzyme acts on

What happens during translation?

cell uses mRNA code to make proteins

What are guard cells?

Regulate the opening & closing of the stomata

What is a "law" in science?

A description of a specific relationship, often uses math.

Which of the following statements is true about a THEORY

Its a set of ideas explaning a phenomenan- well tested, repeated,replicated

parts of molecule have slight positive and negative charges

Hold water molecules to one another

resistant to change in temperature

Enzymes are substrate specific because........

They have a specfic shape called the active site

A logical interpretation of an observation

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After School Bio EOC Review

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How science works Macromolecules Enzymes Properties of Water Plants

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Questions 40

Answers

1
Water molecules have polarity.
False
True
2
Transcription makes _______ & translation makes __________________.
DNA & mRNA
protein, tRNA
amino acids, protein
mRNA, protein
3
What are the 3 parts of the RNA nucleotide?
ribose sugar, phosphate, base ( GCAT)
deoxyribose sugar, phosphate, base ( GCAT)
deoxyribose sugar, phosphate, base (GCAU)
ribose sugar, phosphate, base (GCAU)
4
Nucleic acids
glucose, phosphate group, nitrogen base
4-C sugar, phosphate group, nitrogen base
5-C sugar, phosphate group, nitrogen base
8-C sugar, phosphate group, nitrogen base
5
Hydrogen Bonds can also be found....
between the 2 strands of RNA
between each amino acid in a polypeptide
between the 2 strands of DNA
between each glucose moleucle in starch
6
Nutrients: Carbohydrates?
Biotic
Abiotic
7
Nucleotides
are the monomers of DNA and RNA
are the monomers of Lipids
Are the monomers of Amino Acids
are the monomers of Proteins
8
List that includes ONLY carbohydrates
Fats, oils, maltose, polypeptide
cellulose, waxes, starch, DNA
glucose, fructose, Starch, cellulose
Enzymes, hemoglobin, glucose, starch
9
Enzymes are ...
nucleic acids
lipids
carbohydrates
proteins
10
What is the area called where the substrate and enzyme bind together? (Represented by C)
Active site
Product
Substrate
Enzyme
11
Why do scientists repeat other scientists experiment?
A. To check for accuracy
A. To change results
A. To show how fun science is
A. To ask a new question
12
In this diagram the enzyme-substrate complex =
A
E
C
D
13
Lipids-
Are used to build structures such as pigments & enzymes & receptors
2 of the above
Can be used as long term energy
Make up the cell membrane
14
Dehydration synthesis
removing water to build bonds
removing water to break bonds
making music with water glasses
adding water to build bonds
15
Control Group
The one that is unchanged, used to compare (normal group)
The one with the independent variable in it
The one with the dependent variable in it
The group you are testing
16
A hypothesis is a(n) _____________ guess based on _______________ and your knowledge.
educated, observations
funny, jokes
uneducated, news
wild, supersitition
17
Enzymes lower ...
the size of the active site where the substrate sits
the rate of reaction
the amount of activation energy needed to start the reaction
the ability of the reaction to proceed
18
Which is the substrate?
C
A
E
B
19
What is the main role of carbohydrates in the body?
To make you feel full
To create padding around major organs
Tissue Lining
Energy
20
What is the universal solvent?
Salt because its a solute
Sugar because its polar
Water because it has hydrogen bonds
Water because it is polar
21
Why do enzymes denature?
Low temperature slows the kinetic energy of the molecules
High temperature and wrong pH breaks bonds
Optimum pH breaks bonds & changes the enzymes shape
Enzymes denature under optimum temperature & pH conditions
22
Which statement best describes the effect of High specific heat?
Surface tension from the cohesion of water molecules
The temp. of water does not change; stable
Adhesion when water sticks to other molecules such as the xylem in plants
Water can dissolve many different substances
23
The term substrate refers to ...
the change in pH
the amount of the enzyme
the molecule the enzyme acts on
a metabolic reaction
24
All amino acids ____.
form long chains called polysaccharides
are structurally identical
contain C, H, O and N
contain C, H, & O only
25
Amino acids make up ________________.
Proteins
Carbohydrates
Lipids
Nucleic Acids
26
What type of nucleic acids are shown in the image?
DNA & mRNA
Amino Acids- Val, Thr, Tyr, & Ser
mRNA & tRNA
DNA
27
What happens during translation?
tRNA is made from a mRNA code
copies of DNA molecules are made
messenger RNA is made from a DNA code
cell uses mRNA code to make proteins
28
What are guard cells?
Cells that open when its hot & dry
Regulate the opening & closing of the stomata
Regulate the opening & closing of the vascular tissue
Have a high surface area to Help the plants absorb water
29
What is a "law" in science?
A well supported explanation of how something happens.
A description of a specific relationship, often uses math.
Related to the hypothesis
Theories always become laws.
30
Enzymes are used up in a chemical reaction.
FALSE
TRUE
31
Which of the following statements is true about a THEORY
A theory is a hypothesis that uses laws & observation to make an assumption
Its a set of ideas explaning a phenomenan- well tested, repeated,replicated
It is a guess or hunch about something that has occurred in nature.
It will be proven eventually & become a law
32
Enzymes...
increase the rate of reaction
have nothing to do with chemical reactions
slow down the rate of a reaction
keep the reaction going at a constant rate
33
Proteins are assembled at organelles called?
vacuoles
mitochondria
chloroplasts
ribosomes
34
What is polarity?
even distribution of electrons in a covalent bond
the molecule is ionic
parts of molecule have slight positive and negative charges
the molecule is neutral
35
Lipids are made up of
amino acids
nucleotides
fatty acids and glycerol
amino acids and glycerol
36
Monomers of carbohydrates
Polysaccharides; Starch
Amino Acids; Leucine/Glycine
Triglycerides; Fatty Acids & Glycerol
Monosaccharides; Glucose
37
Hydrogen Bonds
Form between hydrogen atoms in different molecules
Holds the 2 hydrogen atoms & 1 oxygen atom together within 1 water molecule
Hold 2 hydrogen atoms together in a molecule of hydrogen gas
Hold water molecules to one another
38
High Specific Heat
resistant to change in temperature
water sticking together
water
all of these answers
39
Enzymes are substrate specific because........
They have a specfic shape called the active site
They are found in the same place as the substrate
They are monoclonal
They have a specific shape called the activity site
40
An inference is:
The same as an observation
A logical interpretation of an observation
A hypothesis.
A statement involving numbers

After School Bio EOC Review Flashcards | StudBud