What is an example of an ABIOTIC and BIOTIC part of an ecosystem?
Abiotic: Not living thing (rock)
Biotic: Living thing (plant)
What is an advantage of Sexual Reproduction?
What is a disadvantage of sexual reproduction?
Advantage: Genetic variation
Disadvantage: 2 parents needed, takes more time- fewer offspring produced
According to the base pair rule in DNA,
Adenine always bonds with ____
Guanine always bonds with____
Guanine with Cytosine
Give an example of the terms genotype and phenotype
Genotype: TT, Tt, tt
Phenotype: Tall, short
List the levels of organization in order from MOST COMPLEX to LEAST complex
Organism, Organ system, organ, tissue, cell
Earth’s atmosphere is best classified as an….
Element, Compound, Mixture
Mixture
What stage of mitosis do the chromosomes line up in the middle and spindle fibers attach to the chromosomes?
Metaphase
The following picture illustrates what building block of DNA?
Nucleotide.
What is the genotypic ratio for the punnett square shown?
1:2:1
What organ is number 4 pointing too?
small intestine
Which statement is true about the carbon cycle?
Reservoirs add more carbon dioxide to the environment than they remove.
Carbon dioxide travels through the environment in a single direction
Carbon dioxide is constantly moving through the environment
When carbon dioxide enters a reservoir, it no longer cycles.
3. Carbon dioxide is constantly moving through the environment
Sharks have 38 chromosomes. If a shark’s cell does MITOSIS how many cells will be created?
How many chromosomes will be in each?
.
2 cells
38 chromosomes in each
What is the function or purpose of DNA?
Genetic code that tells the cell and organism how to work
In plants, yellow pods are dominant to green pods. If a homozygous dominant plant is crossed with a homozygous recessive plant what are the possible phenotypes their offspring could have?
All will have yellow pods (100%)
What are the 3 types of blood vessels found in the circulatory system?
arteries, veins, capillaries
What step(s) could be taken to help reduce the emission of carbon dioxide into the atmosphere?
a. Decrease combustion.
b. Cut fewer trees.
c. Plant more plants.
d. All of the above
c. Plant more plants
During what stage of the cell cycle is DNA replicated?
Interphase
One strand of DNA has the following bases. What bases would be on the other strand?
C A T T G C A
G T A A C G T
Both parents are heterozygous for rolling their tongue. What is the probability (percentage) that their offspring will NOT be able to roll their tongue?
25%
What organ is the pin pointing to?
Retina
The movements of energy and nutrients through living systems are different because
a. energy flows in one direction, and nutrients recycle.
b. energy flows in two directions and nutrients flow in one direction
c. nutrients flow in two directions, and energy recycles.
d. energy forms chemical compounds, and nutrients are lost as heat
a. energy flows in one direction, and nutrients recycle.
Put the phases of the cell cycle in order.
BDACFE
Give an example of a behavioral, structural, and reproductive adaptation.
Structural: spines on a cactus, horns, claws
Reproductive: Brightly colored petals, mating call, anything to attract a mate or help pollinate or spread seeds
In cats, having six toes is dominant to five toes. If a homozygous recessive cat is crossed with a heterozygous cat, what are the possible genotypes their offspring could have? List ALL.
Gg, gg
Give an example of how at least 3 systems work together.
Riding a bike: muscular, skeletal, nervous, circulatory, respiratory