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Question | Answer |
What's the difference between a law and a theory | |
What are the parts of controlled experiment? | dep. indep variables, control |
The statement the worm is 2 centimeters long is an_____ | observation |
To be useful a hypothesis must be_________ | testable |
Term for keeping stable internal conditions | homeostasis |
Proteins are polymers formed from______ | amino acids |
Which of the following is not and organic molecule | sodium chloride |
What do nucleotides consist of | a phosphate group, nitrogen base, sugar |
What happens when an enzyme is denatured? | it loses its shape |
Which organelle is found in both prokaryotic and eukaryotic cells? | ribosomes |
Moving molecules against the concentration gradient is known as_____ | active |
Why can bacteria recognize a human gene and then produce a human protein? | The basic components of DNA are the same in humans and bacteria. |
The sequence of DNA below is part of a gene. How many amino acids are coded for by this segment? ATCAGCGCTGGC | 4 |
What is one way a mutation can occur? | one nucleotide is replaced by another, or deleted, or added |
What three amino acids are coded for by: ACA, GUC, GGA | threonine, valine, glycine |
Describe the central dogma of biology | energy is passed from DNA to RNA to proteins (ribosomes) |
Which type of reproduction leads to increased genetic variation on a population? | sexual reproduction |
Why is cancer linked to cell division? | because cancer is uncontrolled cell divsion |
When does crossing over occur and why is it essential for genetic variation? | |
Plant 2 is produced asexually from Plant 1. If the leaf cells of Plant 1 have 56 chromosomes, how many chromosomes will be found in the leaf cells of Plant 2? | 56 |
Plant cells that are specialized for cell division are most likely found in what part of the plant? | roots |
What is the main function of leaves? | photosynthesis |
What is the human embryo called after the eighth week of development? | fetus |