Cell Division & Photosynthesis Lab
What pigment causes leaves to be green?
What is the biochemical process where plants absorb light & convert it to useable chemical bond energy?
Which color in the visible light spectrum has the longest wavelength?
Which color in the visible light spectrum has the shortest wave length?
The green pigment that absorbs light & is directly involved in photosynthesis is called ____.
What colors of light are readily absorbed by chlorophyll a?
Violet/Blue & Red
Chlorophyll looks ___ ___ to the eye.
___ ___ also absorb solar energy but they then pass this absorbed energy over to chlorophyll a for photosynthesis.
What color does chlorophyll b look to our eyes?
____ absorb a great deal in the blue & green range & appear to our eyes as various shades of yellow or yellow-orange.
A ___ ___ layer on a leaf prevents water loss & but also prevents gas exchange.
The outer layer of cells on a leaf contain ____ through which gas exchange occurs.
What is the function of air spaces within a leaf?
Allow diffusion of gasses throughout interior of the leaf to reach all cells
Name 2 functions vascular tissue within leaves.
Water & minerals to leaf cells
Conduct excess energy rich sugar to other plant parts for storage
Stored glucose molecules are chemically bonded together for later use & stored as ____.
What method can be used to separate components of a mixture of molecules?
What 2 things determine rate at which solvent travels up paper in paper chromatography?
Molecules affinity for the paper
Molecules solubility in solvent
A completed paper chromatography strip is call a ____.
What is happening to a leaf when it is senescing?
It is declining & dying
Plants that drop their leaves at the beginning of the inhospitable season are called what?
During the process of senescence a plant does what?
Strips anything it can fr the leaf & stores it in preparation for dropping the leaf
What is the equation for photosynthesis?
6CO₂ + 12H₂O + Light → C₆H₁₂O₆ + 6O₂ + 6H₂O
Most of the time DNA is found in a thread like form called ____.
Chromatin is elaborately wound up into coiled structures called ____.
Humans have ___ chromosomes in each body cell.
Homologous prs are matched by what means?
Chromosomes that are not concerned with sex determination are called ____.
Females have a homologous pr of ____ sex chromosomes but males are ___.
Chromosomes from cells that are undergoing mitosis look how?
Thickly coiled structures
B/f a new nucleus can be made DNA in each chromosome in each chromosome must what?
The place where chromosomes attach is called the ____.
A cell that contains the correct # of homologous prs for its species is said to be ____.
A cell w/only 1 member of each homologous pr is said to be ___.
The union of a haploid egg & a haploid sperm produces a ___ ____.
Each strand of a double chromosome is called a ____.
B/c chromatids are identical those that are attached to each other are called ___ ___.
What are the phases of mitosis?
In prophase what events take place?
Spindle begins to develop
Nuclear env desintigrates
What are the events of the metaphase?
Centrosomes move to opposite ends of cell
Chromosomes align on metaphasal plate
During what phase of mitosis do chromatids separate & move towards opposite ends of the spindle?
What happens during the telophase & cytokinesis?
Nuclear env reforms & cytoplasms divide
What is overall result of mitosis?
2 identical cells
A special type of cell division to produce gametes is called ___.
Each chromosome is a ___ molecule that encodes info & each segment of info is a ___.
How many cells result fr meiosis?
Homologous prs that assoc closely during prophase I are termed ___.
___ ___ is the term used to describe homologous chromosomes exchanging pieces of DNA.
Crossing over at prophase I is one great source of ___ ___.
Cell Division & Photosynthesis Lab
Cell Division & photosynthesis Lab