Show:
Chapter 1
Chapter 2
Chapter 7
Chapter 10
Chapter 11
100
True/False - Scientific laws are so well supported that they are considered unchangeable truths.
false All scientific information is changeable as new knowledge becomes available!
100
The bonds in water are polar covalent bonds. Which part of a water molecule is slightly positive?
the hydrogen atoms (the oxygen atom is slightly negative)
100
There is a tradeoff between _____________ and ___________ when using microscopes. When one increases, the other decreases. HINT: As you zoom in, the image gets blurry.
magnification and resolution
100
Are "somatic" cells body cells or reproductive cells?
body cells
100
Is MEIOSIS part of sexual reproduction or asexual reproduction?
sexual reproduction
200
Theory, law, or hypothesis? For liquids and gasses that are in closed containers that cannot expand, if you apply pressure to any part, it will be equally spread over the liquid/gas.
law Theories are explanations of how or why things occur and are usually broad in scope (they combine many well-supported hypotheses and explain groups of phenomena, not specific individual circumstances). Laws describe what will happen under certain circumstances. Hypotheses are well-informed predictions but could be disproven with an experiment (although in Biology this is rare--we usually gather evidence for or against major hypotheses over time rather than strictly proving or disproving). **And remember, theories CANNOT become laws, and laws CANNOT become theories!
200
Surface tension of water allows a paperclip to float in a puddle. Which property of water results in surface tension?
cohesion
200
An organism has a cell wall but NO nucleus. What type of cell is it: plant, animal, or bacteria?
bacteria
200
Organelles are made during which two phases of the cell cycle?
G1 and G2
200
A parent cell has 8 chromosomes at the beginning of MEIOSIS. How many chromosomes will each daughter cell have?
4
300
A logical conclusion from prior knowledge BEFORE an experiment is conducted is called a(n) ______________. A logical conclusion based on the data from an experiment is considered a "conclusion" in scientific methodology.
inference
300
What is the monomer/subunit/building block of nucleic acids?
nucleotide
300
The function of the cell membrane
regulate molecules entering and leaving through diffusion and active transport barrier from the outside environment
300
Cells that go rapidly through the cell cycle without controls or regulation are considered ___________.
Cancer
300
Meiosis produces 4 ___ploid daughter cells called ____________.
haploid, gametes
400
Ms. Odom wants to know the effects of playing video games on eyesight. She has volunteers, over a course of 6 months, play video games either 0, 2, or 4 hours per day. She measures their eyesight at the beginning of the experiment and at the end of the experiment, and draws conclusions based on how eyesight changed over the experiment. Here are her results: 0 hours group: 0%, +1%, 0%, -1% 2 hours group: 0%, 0%, +1%, -2% 4 hours group: 0%, -2%, -1%, 0% In terms of scientific methodology, what are these numbers called?
data
400
If you make ATP (ADP plus phosphate group), does the reaction absorb energy or release energy?
absorb (breaking ATP releases energy)
400
Van Leeuwenhoek used an early microscope to observe what moving around through pond water?
single-celled organisms
400
In MITOSIS, are cells diploid or haploid: 1- at the beginning of mitosis? 2- at the end of mitosis?
1- diploid 2- diploid
400
During Prophase I of meiosis, - the nuclear membrane dissolves - DNA condenses and becomes visible - centrioles migrate toward the poles of the cell - spindle fibers form - homologous pairs of chromosomes join up to form ________ and experience __________________ (where bits of the chromosome are exchanged between the two).
tetrads, crossing over
500
Ms. Odom wants to know the effects of playing video games on eyesight. She has volunteers, over a course of 6 months, play video games either 0, 2, or 4 hours per day. She measures their eyesight at the beginning of the experiment and at the end of the experiment, and draws conclusions based on how eyesight changed over the experiment. What are the independent variable, dependent variable, and control group?
independent variable: time playing video games dependent variable: change in eyesight control group: 0 hours of video games
500
Describe the enzyme cycle: 1. Substrates _________ to the enzyme 2. The reaction is __________ by the enzyme 3. The ____________s are released 4. The enzyme returns to its original shape and does it again!
bind, catalyzed, products
500
List the 3 parts of cell theory and which scientist(s) are specifically credited for each part.
All living things are made of cells. - Schleiden, Schwann Cells only arise from the division of preexisting cells. - Virchow Cells are the basic unit of life.
500
A parent cell has 8 chromosomes at the beginning of mitosis. How many chromosomes will each daughter cell have?
8 - In MITOSIS, daughter cells are genetically identical to parent cells. Both are diploid, with the full number of chromosomes.
500
Because of (1) crossing over, (2) the many combinations of ways that homologous chromosomes can be split into daughter cell gametes, and (3) the different combinations of chromosomes that result from fertilization, sexual reproduction is considered highly important to the the long-term survival of a species. In other words, sexual reproduction produces ___________ ____________.
genetic diversity