survivorship curves Flashcards
(40 cards)
type 1 survivorship curves
die at old ages
type 2 survivorship curve
die uniformally
type 3 survivorship curve
die at young ages
Write the formula for pop. growth rate, identify all variables.
r=(b+i)-(d+e)
r= pop. growth rate
b=birth rate
i=immigration rate
d= death rate
e=emigration rate
describe a major method by which carbon is cycled.
Carbon moves from living things through the atmosphere.
List the stages of mitosis in the correct order.
PMAT 1
What is necessary for a recessive x-linked allele to be expressed in females?
An abnormal gene on the x chromosome.
4 main groups of carbon-based molecules are found in living things, list them.
carbohydrates- polymer
lipids- not a monomer
proteins- aminoacids
Nucliec acid- nucleotides
What are chargaffs rules?
In the DNA of any species and any organism in the amount of guanine, should be equal to the amount of cytosine and the amount of adenine should be equal to the amount of thymine.
Why is an x-recessive link always expressed in males?
they only carry one chromosome.
What is the relationship between structure and function in biology, give an example.
Structure drives function, ex cars and wheels.
Describe the relationship between the predator population and the population of its prey.
When the prey population rises the predator population rises, but when the predator population rises the prey population decreases.
Which trophic level can be occupied by autotrophs?
1
what are the four characteristics of life?
Cells
need of energy
response to environment
reproduction and developemnt
what are transcription and translation?
transcription- the process by which DNA is copied to RNA
translation- RNA is used to produce proteins.
what two factors determine aquatic biome classification?
Sunlight and contractions of dissolved oxygen and nutrients in water.
List the phases of meiosis in order.
PMAT2
Explain why genetic disorders caused by abnormal numbers of chromosomes most often involve the x-chromosome?
how much energy is passed between trophic levels?
10%
which of the following accurately describes the flow of genetic information?
Nuculeas to cytoplasm to ribosome.
What are the 4 nitrogenous bases that DNA contains and how do they pair up in the DNA structure?
Adenine, Cytosine, guanine, and thymine
a t
c g
g c
t a
Outline the four stages of the demographic transition as it occurred in Europe and north america.
low growth, high growth, moderate growth, low growth.
Explain why bacteria are essential parts of the nitrogen cycle.
The bacteria get energy through photosynthesis and in return, they fix nitrogen to form the plants that they need.
describe paratism
one benefits the other is harmed
