chapter 1
A ____________________ electron microscope passes a beam of electrons over a specimen’s surface, whereas a ____________________ electron microscope passes a beam of electrons through a thin slice of a specimen.
Scanning, transmitting
The scientific name of an organism consists of ___________ and __________, and is the same for scientists all over the world.
genus and species
Lipids are soluble in
oil
Ridding the cell of material by discharging it from sacs at the cell surface is called
exocytosis
The Calvin cycle is the carbon fixation part of ___________.
photosynthesis
An hypothesis that does not explain an observation is
Rejected
A solution with a pH of 11 is
alkaline or basic
Amino acids are monomers of
proteins.
A particularly active cell might contain large numbers of
mitochondria
When cells break down food molecules, energy is temporarily stored in ______________________.
ATP molecules.
Which abbreviation in the SI chart indicates intensity of light, and what are the units of measure?
kg. cd. m. s. mol. K. A.
cd, candela
The DNA sequences of two species of sharks would be (more similar or less similar) than the DNA sequences of a shark and a dolphin.
more similar
All organic compounds contain the element
carbon.
The cell's chromosomes are found in
the nucleus
You have been growing some animal cells in culture. The cells grow well for several weeks, and then their growth slows down. You conduct some tests and determine that there is a lot of lactic acid in the culture fluid. What is the most likely explanation for the poor growth of the cells?
not enough oxygen in the culture fluid
A ____________________ experiment is one in which the condition suspected to cause the effect is compared to the same situation without the suspected condition.
controlled
The organism Quercus phellos is a member of the genus
Quercus
The most well known nucleic acids are
DNA and RNA
The spherical organelles that are the site of protein synthesis in a cell are called
ribosomes
The products of photosynthesis
O2 and glucose
A light microscope that has an objective lens of 10× and an ocular lens of 20× has a magnification of
The bond formed when two atoms share a pair of electrons is called
covalent bond.
In a condensation reaction, two molecules become linked together and a molecule of ________________ is produced.
water
Diffusion takes place from an area of _______ concentration to an area of ______ concentration.
high to low
C4 plants are found in the desert and use a different pathway than photosynthesis that forms ______-carbon compounds.
4