parts of the cell
what part of the cell function allows only certain molecules to pass through, the bouncer.
plasma membrane
how many chromosomes do humans have in their body cells?
46
what is a stimulus
any kind of signal that carries information that can be detected.
animals that share common characteristics in bones structure may have had some form of common ancestry is called?
anatomical comparisons
what does DNA stand for...
what part of the cell structure description looks like a pea with wavy lines inside of it
mitochondria
what does diploid mean?
means that a cell has 2 homologous chromosomes
in a city, there is a trash dump that processes wast. In the cell, organelle that is a....
lysosomes
ancient organisms adapted and responded to their environment by inheritable characteristics depending on the type of environment is called?
patterns in fossil evidence
What is data?
Quantitative or qualitative information gained from scientific investigation
what function acts as a barrier to keep water in plant cells.
cell walls
what does haploid mean?
means that a cell has only 1 homologous chromosomes
Offspring show genetic variation from their parents because of .....
sexual reproduction
belief that animals inherited characteristics based upon their use and disuse of traits which is not true, but raise the issue of how they were passed on is called
ideas about inheritance of aquired characteristics
What is codon?
Three-base code in DNA or RNA
what structure description is found as small dots located on the ER or in the cytoplasm.
ribosomes
when does crossing over occur during meiosis?
prophase I
what is imprinting? why is it important?
recognizing and following the first thing a baby sees to move. it keeps young animals close to their mothers.
By directly comparing DNA and proteins, science can determine when animals diverged from one another as well as compare their evolutionary relationship.
Biochemical comparisons (DNA and proteins)
A nonliving strand of genetic material within a protein coat.
what structure Description is not found in animal cells, they are circle with small stacks within them
chloroplasts
what is the major focus of meiosis I ?
genetic diversity
what do B cells produce?
plasma cells and memory B cells
when animals are separated geographically major adaptions is called...
the role of geographic isolation
what are the group of animals that do not have back bones?
invertebrates