Biology Final Exam Practice Questions
What components of the immune system will destroy viruses infecting the cells?
Cytotoxic T Cells
A hypothesis is...
A casual explanation based upon prior knowledge
What structure is unique to plant cells?
A cell wall
Oxygen is a non-polar molecule. To move oxygen against its concentration gradient, which of the following is required?
A membrane bound protein and ATP
If you destroyed the proton gradient in light reactions, what would be the first to stop?
ATP production
What interferes with the production of antibodies in B lymphocytes?
Actinomycin D; which blocks the coming of DNA into mRNA in the nucleus
If a protein moves from low concentrations to high concentration within a cell, what type of transport is this?
Active Transport
What nitrogenous base is common to both RNA and DNA?
Adenine and Thymine
Foreign virus material in vaccines must attach to the _______________ to stimulate acquired of adaptive immunity.
Antigen receptors on the surface of B and T cells
What do proteins provide to a cell?
Enzymatic reactions, structural support, transport channels
How is density calculated?
Population/Area
Why would a plant produce toxins?
The plant needed to produce a chemical that deterred predators and the plants tat contained poison were able to reproduce due to the fitness
If a whale moves from water that is within its thermal neutral zone to waste that is colder what will you predict will happen?
The whales metabolic rate will increase and the whales body temperature will remain constant
Why are viruses considered to be no living?
They do not use energy or carry out metabolism
If a seed coat has a high protein content then you would expect to find high numbers of
amino acids and ribosomes
IF cells had a lower concentration of oxygen in the cells, oxygen would enter the mitochondria by______
diffusion
Your body requires oxygen because...
it is the final electron acceptor in the electron transport chain
The strength of the scientific method is...
it uses evidence come data to establish support for some hypothesis
When energy is used in membrane transport, what is required?
membrane bound protein and ATP
If an animals cell's are hypnotic to the environment then water will move...
out of the animals cell
If a neurotoxin mimics acetylcholine then it...
prevents binding of acetylcholine to ligand gated sodium channels which are acetylcholine receptors
After mitosis the amount of chromosomes....
stays the same
If a seed is dropped on a new island by a flock of birds it will have less genetic variation because....
the founder effect
A person who gets the flu shot will have a faster immune response if they encounter the virus a second time because ...
the presence of memory B and T cells in the body
If the voltage gated sodium channels are blocked then....
there will be fewer action potentials
Member of a flocks of birds would be considered to be one species if...
they can not breed with other species but they breed with each other
Where is ATP synthase located in the chloroplast?
thylakoid membrane
You would predict that a B Lymphocyte that is producing antibodies would contain large amounts...
vesicles and rough endoplasmic reticulum
If the population growth of deer was regulated by a density dependent factor, what would be needed to calculate the growth increment for one year?
The current number of deer in a population The Number of births and deaths The carrying capacity
What are the outputs for light reactions?
NADPH ATP Oxygen
What is produced in glycolysis?
NADPH and ATP
Why do plants appear green?
Because plants reflect green light
Starch is composed of monosaccharides. Starch is a...
Carbohydrate
What are the chemical reactants for carbon reactions?
Carbon NADPH ATP
If you placed a plant in a a closed container and put it under a bright light, what would you predict to happen to the amount of oxygen in the container over time? What about the amount of carbon dioxide?
Carbon Dioxide would decrease because it is being consumed and the Oxygen would increase because it is a product
What happens to chromosomes during the second division of meiosis?
Chromosomes slipt at the controller causing sister chromatids to seperate
What is only produces in the Krebs Cycle?
FADH2
What are the chemical products for carbon reactions?
Glucose ADP NADPH
Where is NADPH used as a reactant?
Glucose production in the carbon reaction
In the absence of oxygen, what would continue to operate in cellular respiration?
Glycolysis
With the lack of oxygen, cells would rely on _______ and ________ for ATP production.
Glycolysis and Fermentation
In what steps of cellular respiration is NADPH produced?
Glycolysis and Krebs cycle
In what steps of cellular respiration is NADH produced?
Glycolysis and the Krebs cycle
An electron transport chain establishes a ________ proton concentration in the inter membrane space of mitochondria and a __________ proton concentration in the matrix.
High and Low
What happens when a needle enters your arm?
Histamine is released to the surrounding area and there is an increase of blood flow to the injection site
A blue whale would be a...
Homeothermic ectotherm
If there was less oxygen in the mitochondria, then the concentration of ______________ in the inter membrane space would decrease.
Hydrogen ions
what biological molecule is used for energy storage?
Lipids and proteins
Which process does not occur in growing a child's leg?
Meiosis
Assuming all other parts of cellular respiration were working properly, a build up of ______ would occur if the Krebs cycle stopped.
Pyruvate
What organelle is involved in the production of antibodies?
Ribosomes
What organelles of a cell would be involved in the synthesis of antibodies?
Ribosomes
What organelle produces lipid in an animals mammary cell?
Smooth Endoplasmic Reticulum
Where is ATP synthase located in the chloroplast?
The Thylakoid membrane
Milk is made of proteins and lipids. What organelles should be in high abundance in cells that make milk?
Vesicles and Ribosomes
A B lymphocyte that is producing antibodies would contain large amount of...
Vesicles and Rough endoplasmic Reticulum
The rate of water consumption in a cyanobacterium would be fastest in...
Warm water at noon
What are the inputs for light reactions?
Water Light ADP NADP+
What would occur after in a plant on a warm sunny day compared to a cool sunny day?
Water consumption, NADPH production, and ATP production