bellwork Flashcards
define skepticism
a questioning or doubtful attitude
what is a law? give an example
truths that are followed and known everywhere ex: law of conservation of mass
identify independent and dependent variables
independent: variables that change
dependent: change bc of the independent variable
name two tools for dissecting
a scavenger and a dissecting tray
what created temp.
the speed of air molecules caused friction which creates temp.
what is synthesis
producing a complex substance from a simple one
compare/contrast the types of bonding
ionic: transfers valence electrons
covalent: share valence electrons
identify the diatomic elements
H2 O2 F2 Br2 I2 N2 Cl2
what is the property of polarity
liquid
why is capillary action necessary
it enables H2O to move upward from root to leaves
what is a mixture
two or more thing physically combined
who hydrolysis needed in the body
needed to break food down into usable nutrients
how do guard cells help stoma yes in photosynthesis
guard cells open and close stoma red to let CO2 in and O2 out
compare/contrast the types of cell respiration
aerobic: O2 used, more energy, 36 ATP, in mitochondria
anaerobic: no O2 used, less energy, 2 ATP, in cytoplasm
both: create ATP, glucose used
why does lactic acid form in a multicellular organism
it happens when an organism doesn’t have enough oxygen
compare/contrast the types of reproduction
asexual: one parent, exact copy, bacteria, cell splits
sexual: 2 parents, different from parents, 2 cells split
both: creates offspring
what is mitosis
splitting of nucleus to form 2 new cells
what’s the difference between binary fission and budding
binary fission creates 2 cells of the same size through cell division. Budding creates two cells of different size by using a method of growing a tiny bud from the parent cell
why does cancer occur
it occurs due to uncontrollable mitosis
regeneration
development or replacement of body parts
explain how vegetative propagation is a sexual process
new plant grows from parent plant offspring ex: runner, bulbs, tuber, cutting.
zygote
a fertilized egg
somatic cells
body cells
why is reproduction dicision important
cuts chromosome # in half bc gametes come to get and chromosome # then doubles
what are stem cells
can develop into any type of cell
differentiation
the idea that organs and tissues all have different functions
describe the process that forms a zygote and the an embryo
zygote: fertilization
embryo: mitosis
how are gametes and gonads related
gametes are made in the gonads
compare and contrast the types of fertilization
spermogenesis: male, makes 4 sperm of equal, testes
oogenesis: female, large egg and 3 polar bodies, ovaries
both: produce gametes, meiosis, haploid
heredity
the passing down of genes from parents to offspring
DNA stored inside a chromosome
gene
explains the relationship between genes and alleles
allele is a form of gene
how can 2 individuals have the same phenotype but different genotype
one could be hetero while one could homo dominant
place the following in order from least to most complex
cell, organ system, tissue, organism, organelle, organ
organelle, cell, tissue, organ, organ system, organism
what is a hazard
a hazard is something is dangerous and that you should take caution of
