FINAL Flashcards
Which structure in Figure 7-6 transforms energy?
J
Homeostasis in living things involves processes that ______________________.
Maintain a constant internal environment.
Cellular respiration is called an aerobic process because is requires _________________.
Oxygen
Charles Darwin called the ability of an organism to survive and reproduce in its specific environment, ______________.
Fitness
In chickens, rose comb (R) is dominant to single come (r). A homozygous rose-combed rooster is mated with a single-combed hen. All of the chicks were kept together as a group for several years. They were allowed to mate only within their own group. What is the expected phenotype of the F2 chicks?
75% rose comb
and
25% single comb
In order to fit within a celll, DNA becomes more compact by ______________________.
wrapping tightly around associates proteins
Homologues pair up at the equator of the cell during ______________.
meiosis I
Hooke’s discovery of cells was made observing __________________.
dead plant cells
Prokaryotes lack __________________.
a nucleus
The diffusion of water across a selectively permeable membrane is called ______________________.
Osmosis
The diploid number of chromosomes in a human skin cells is 46: How many chromosomes are in a human egg cell?
23
The function of tRNA is to ___________________________________.
Transfer amino acids to ribosomes
The idea that only famine, disease, and war could prevent the endless growth of the human populations was presented by ________________.
Malthus
Which one of the following nucleotide pair bonds would be found in a DNA molecule?
Guanine - cytosine
Which organelle would you expect to find in plant cells but not animal cells?
Chloroplast
Which organic molecule below is classified as a carbohydrate?
Sugar
Which was on of the first people to identify and see cork cells?
Robert Hooke
Without enzymes, the chemical reactions in the body would _______________________.
Occur too slowly to support life processes.
DNA is copied during a process called _______________________.
Replication
DNA is in the form of ______________ during interphase.
Chromatin
During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus, if a portion of the original strand is CCTAGCT, then the new strand will be _______________.
GGATCGA
Each nucleotide triplet in mRNA that specifies a particular amino acid is called a(n) ______________.
Codon
Electrons are donated to the electron transport chain by __________________________.
FADH2 and NADH
Energy is release when the bond between __________________________
_____________________.
Phosphate groups in ATP are broken.
______________________ are biological catalysts.
Enzymes
Eye color in humans is the result of _____________________ inheritance.
Polygenic
In humans, the pelvis and the femur, or thigh bone, are involved in walking. In whales, the pelvis and femur are _________________________________.
Vestigial structures
What parts of Figure 7-6 are in a prokaryotic cell?
D and M
Which structure in Figure 7-6 is responsible for chemical reactions?
L
Which structure in Figure 7-6 is the cell control center?
I
Which structure in Figure in 7-6 maintains homeostasis?
D
Which structure in Figure 7-6 sorts and transports?
G
Scientists publish the details of important experiments so that
1) _________________________________.
2) _________________________________.
3) __________________________________.
1) their experimental procedures can be reviewed.
2) others can try to reproduce the results.
3) their work can be repeated.
Desperation of homologues occur during ______________________.
Meiosis I
The average individuals of a population are favored in _______________ selection.
Stabilizing
The base-pairing rules state that the following are base pairs in DNA:
Adenine - thymine
Guanine - cytosine
In plant cells, cytokenesis occurs when _____________________________.
A cell wall forms
In taxonomy, a group at any level of organization is referred to as a _________.
Taxon
In which cell cycle(s) does viral DNA become inter grated into the host cell’s DNA?
Lysogenic
In which of the following organelles is a cell’s ATP produced?
Mitochondrion
At the end of the electron transport chain,
1) the electrons build up inside the mitochondria & diffuse back into the thylakoid.
2) the electrons are used in the formation of ethyl alcohol.
3) the electrons combine with oxygen and protons to form water.
NONE OF THE ABOVE
Atoms are composed of:
1) electrons with a negative charge.
2) neutrons with no charge.
3) protons with a positive charge.
4) all of the above
ALL OF THE ABOVE
________________ _________________ allow certain species to survive harsh environmental conditions.
Bacterial endoscopes
Bacteriophages infect ___________
_________.
Bacteria only
Because Carbon has four electrons in its outer energy level, ________________________________________________________________________.
It can react with up to four other atoms to form covalent bonds.
_____________________ is the process by which bacteria reproduce.
Binary Fission
By the end of prophase, each of the following has occurred except ___________________________________.
Lining up of the chromosomes in the cell.
The bond formed when two atoms share a pair of electrons is called a ____________________________.
Covalent bond
How many chromosomes are in the body cells of an organism that has a haploid number of 8?
16
In __________________ selection, individuals with both extreme forms of a trait are at a selective advantage.
Disruptive
In cellular respiration, the most energy is transferred during ___________________________________.
the electron transport chain
A trait controlled by four alleles is said to have ______________________.
Multiple alleles
A typical virus consists of _________
__________________________________.
A protein coat and a nucleic acid core
1) is formed from the breakdown of pyruvic acid.
2) can be used in synthesis of needed molecules.
3) enters the KREBS CYCLE.
Acetyl coenzyme A
Acidic solutions have a pH that is _______________________.
Less than 7
Active transport is the movement of molecules from ________________
___________________________________.
An area of low concentration to an area of high concentration.
All organic compounds contain the element ________________.
Carbon
Amino acids are monomers of
____________.
Proteins
An atom that has gained or lost electrons is called a(n) __________.
Ion
A prophage is made of ____________
_____.
viral DNA
A protein disk that attaches 2 chromatids to each other in a chromosome is called a _____________________.
Centromere
The concentration of dissolved substances outside the cell is higher that the concentration inside the cell wall.
Hypertonic solution
Diffusion of water molecules through a selectively permeable membrane.
Osmosis
The concentration of dissolved substances in the solution is the same as the concentration of dissolved substances inside the cell.
Isotonic solution
Movement of particles from an area of higher concentration to one of lower concentration.
Diffusion
A segment of DNA that controls the production of a protein.
Gene
Duplicate halves of a chromosome.
Chromatids
Release of wastes or cell products from inside to outside a cell.
Exocytosis
The passing of characteristics from parents to offspring.
Heredity
Darwin began to formulate his concept of evolution by natural selection after ____________________.
Observations of many species and their geological locations.