Where is an electron found and what is its charge?

Orbiting the Nucleus -- Negative

Function of the cell membrane?

selectively permeable and controls what enters/leaves the cell

What is a phospholipid composed of?

A polar head and a nonpolar tail

requires energy in the form of ATP

Function of the golgi apparatus.

Receiving, modifying and transporting proteins.

Rough endoplasmic reticulum...

synthesize and package proteins for transport

Function of an enzyme:

speed up processes and break things down

Which of the following limits the maximum size of a cell?

the ratio of cell surface area to volume

Why would researchers use quantitative methods?

high reliability, takes away bias

An unsaturated fatty acid...

do not lie straight due to C = C bonds

If you have a high concentration of HYDROGEN ions what will happen to the pH

The pH will decrease and become an acid

What is the purpose of the endomembrane system?

to manufacture, process, modify, sort, and transport proteins and lipids

Composition of DNA structure:

Deoxyribosome sugar, phosphate, Notrogeneous bases

Definition of a solution

Is a homogeneous mixture of two or more substances

what is a hydrolysis reaction?

breaking down polymers into monomers using water

tiny structures that help cells carry out jobs to stay alive

In a solution, which is the solute?

The smallest part that is dissolved.

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Mid-Term Biology

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Questions 71

Answers

1
The endoplasmic reticulum functions to:
package proteins
make ribosomes
destroy old cell parts
Transport Materials
2
I am the hydrophilic end of the phospholipid. Water and I can bond easily.
Phosphate Head
Carrier Protein
Integral Protein
Lipid Tails
3
Which of the following is not a statement of the Cell Theory
Cells are the smallest living things
All cells come from other cells
All living things are organized by cells
Viruses have cells
4
What is the atomic number?
Number of neutrons
Number of protons
Number of electrons
5
Humans are in what Domain?
Bacteria
Eukarya
Archaea
Prokarya
6
Examples of lipids are . . .
DNA, RNA, amino acids
Sucrose, glucose, & galactose
Lions, tigers, & bears, oh my!
Fats, oils, & waxes
7
Where is an electron found and what is its charge?
In the nucleus -- Positive
Orbiting the nucleus -- Positive
Orbiting the Nucleus -- Negative
In the nucleus -- Negative
8
Characteristics of Living Things:
Reproduce
Reprogram
Replicate
Reciprocate
9
Function of the cell membrane?
selectively permeable and controls what enters/leaves the cell
jelly-like substance that holds the organelles in place
outside layer, it gives structure and support
contains DNA, the command center
10
What is a phospholipid composed of?
A nonpolar head and tail
A polar head and a nonpolar tail
A nonpolar head and a polar tail
A polar head and tail
11
Energy flows in one direction in an ecosystem, matter recycles.
True
False
12
Active transport
requires no energy at first
requires energy in the form of ATP
requires energy from the sun
doesn't require energy
13
How does energy flow in the biosphere?
Consumers to Sun to Producers
Producers to Consumers to Sun
Sun to Consumers to Producers
Sun to Producers to Consumers
14
endoplasmic reticulum functions to:
package proteins
transport materials
make ribosomes
15
the products in a chemical reactions are found
on the left side
it is the arrow
on the right side
16
Function of the golgi apparatus.
Manufactures proteins.
Contains genetic material.
Receiving, modifying and transporting proteins.
Makes muscle contraction possible.
17
Oxygen has 6 electrons in its outer energy level. To meet the Octet rule, how many more electrons does oxygen want?
6
3
2
8
18
Rough endoplasmic reticulum...
transports particular molecules
aids in the production of lipids
temporarily stores materials
synthesize and package proteins for transport
19
Produces energy for the cell
Golgi Body
Cell Wall
Lysosome
Mitochondria
20
nucleotides join together make.....
Lipids
Nucleic acids (DNA & RNA)
Carbohydrates
Proteins
21
Homeostasis is the ability of the body to maintain a______ ________ ___________.
unbalanced external environment
unbalanced internal environment
stable internal environment
stable external environment
22
Cell Theory: All living things are composed of one or more...
elements
tissues
cells
atoms
23
Function of an enzyme:
slow body processes
alkalize the body environment
speed up processes and break things down
allow food to anabolize
24
cell with NO nucleus
eukaryote
prokaryote
25
Do prokaryotic cells have cytoplasm?
No
Yes
26
The function of the Cytosol is...
Storage
Cellular Fluid
Movement
Transport proteins
27
pH of bases
7
8-14
0-7
28
Which of the following limits the maximum size of a cell?
the ratio of cell surface area to volume
the size of the organs
the number of mitochondria in the cell
size of the nucleus
29
Why would researchers use quantitative methods?
high reliability, takes away bias
high validity
30
Judging information before accepting it is known as
observations.
being smart.
critical thinking.
common sense.
31
What make up tissues?
Organism
Organ Systems
Cells
Organs
32
Energy flow in the biosphere ______.
originates from volcanic activity.
can be traced in the nitrogen cycle.
can be recycled.
is a one-way flow.
33
An unsaturated fatty acid...
are solid at room temperature
do not lie straight due to C = C bonds
no double bonds
has every possible bond made to a hydrogen atom
34
If you have a high concentration of HYDROGEN ions what will happen to the pH
The pH will decrease and become an acid
The pH will decrease and become a base
The pH will increase and become a base
The hydrogen is a buffer so it will neutralize
35
Main component of cell walls
smellulose
cellulose
sellulowes
cellsoclose
36
What is the purpose of the endomembrane system?
To digest material by fusing to the molecule and breaking it down
to manufacture, process, modify, sort, and transport proteins and lipids
To keep all the contents of the cell from spilling out
to store DNA and distribute mRNA to the rest of the cell as instructions
37
Osmosis is the movement of _________ into and out of cells
cytoplasm
oxygen
water
chemicals
38
Cilia and _______________________ are structures that enable cell movement
chloroplasts
cell wall
cytoskeleton
flagella
39
Composition of DNA structure:
Ribosome sugar, phosphate, Nitrogeneous bases
Deoxyribosome sugar, phosphate, Notrogeneous bases
Deoxyribosome sugar, nitrate, Notrogeneous bases
Ribosome sugar, nitrate, Nitrogeneous bases
40
Reactants are starting materials in a chemical reactions.
True
False
41
Animals cells DO NOT have
a nucleus
mitochondria
cell walls & chloroplasts
42
What are characteristics of saturated fats?
single bonds
solid at room temperature
all of the above
example being butter
43
What is the independent variable?
Type of cement
Number of houses
Number of bags of cement
Color of the house
44
What is the dependent variable?
Amount of tires
Amount of cars made
Year of the model(how old the car is)
Model(type) of the Car
45
Definition of a solution
A means of solving a problem or dealing with a difficult situation
When two people get together to solve a problem
Is a homogeneous mixture of two or more substances
A solution consists of only a solute
46
What is ATP?
a form of energy
a type of sugar
a type of nutrient
another name for carbon dioxide
47
What is the Solute in Salt Water?
Ethonol
Water
Salt Water
Salt
48
what is a hydrolysis reaction?
breaking down amino acids using water
breaking down hydrogen bonds using water
breaking down polymers into monomers using water
breaking down monomers into polymers during water
49
What are organelles?
tiny structures that help cells carry out jobs to stay alive
another word for organs in the human body
a form of energy
none of the above
50
In a solution, which is the solute?
The smallest part that is dissolved.
Always water.
The biggest part.
51
Function of ribosomes
support and protection
protein synthesis
photosynthesis
movement and protection
52
An important science skill is critical thinking. This means...
discovering the shortcomings of others
thinking logically to solve a problem
testing a hypothesis during an experiment
knowing when something is very important
53
Active transport...
Doesn't use energy ATP & goes from high to low concentration
Uses energy ATP & goes from low to high concentration
Doesn't use energy ATP & goes from low to high concentration
Uses energy ATP & goes from high to low concentration
54
What makes water polar?
Hydrogen is negative; Oxygen is positive
It's not. It's nonpolar.
There's an equal distribution of charges between atoms.
Hydrogen is positive; Oxygen is negative
55
what is a condensation reaction?
hydrogen bonds bonding with oxygen bonds
joining monomers to form polymers
water molecules forming with hydrogen bonds
the break down of polymers
56
I dislike water. I am the hydrophobic end of the phospholipid.
Transport proteins
Lipid tails
Carrier protein
Phosphate head
57
What is the definition of a solvant?
Can not dissolve
The substance being dissolved
A mixture of a solute and solvent
The liquid that does the dissolving
58
How many bonds can Carbon form?
4
8
6
2
59
Cytosol is best described as the
semi-fluid substance in which organelles are suspended
fluid within the nucleus
internal contents of organelles
area of the cell not occupied by the nucleus
60
The main difference between prokaryotic and eukaryotic cells is, prokarotic cells ___ a nucleus
Do have
Do not have
61
Enzymes are catalysts
False
True
62
What is an AMINO ACID?
Building block of proteins
Monomer of carbohydrates
Building block of lipids
Monomer of nucleic acids
63
Smooth endoplasmic reticulum functions in
synthesis of cholesterol based lipids
rRNA synthesis and ribosome assembly
synthesis of ATP and certain lipids
synthesis of proteins that are to be packaged
64
Unsaturated fats have...
Single bonds
A chain of carbons
Double bonds between carbon atoms
Branches of carbons
65
When a person's blood sugar drops, what response does the body produce?
Pancreas secretes glucagon, then the liver makes glucose
Liver secretes insulin, then the pancreas absorbs glucose from the blood
Pancreas secretes glucagon, the liver absorbs glucose from the blood
Liver secretes glucagon, then the pancreas makes glucose
66
Golgi Body functions:
sorts and packages proteins
carries out photosynthesis
instructions for life
doorway to cell
67
Characteristics Of Living Things:
Responds to the environment
Uses the water to grow and develop clouds
Have no cells
Need space to function
68
If I add a proton to an element, what happens?
it becomes an ion
it becomes an isotope
it changes to another element
nothing
69
What are reactants in a chemical reactions?
The substances participating in a chemical reaction
The substances that react easily with other atoms
The substances formed in a reaction
70
A characteristic of living things
Able to reproduce
Able to breathe air
Having eyes
Having blood
71
pH of acids
7-14
7
0-6
0-14

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