Science review 1
The X Axis is where you record which variable?
Independent variable
Which organelle is the "power house" of the cell because it gives cells energy?
Mitochondria
What is the main function of the flower in a plant?
All living things contain at least one _____.
cell
An organism that has two different alleles for a trait is called this
What is heterozygous?
Sexual Reproduction has ___ parent(s).
2
Infections may be caused from
pathogens (bacteria and viruses)
Which organelle contains DNA?
Nucleus
What is the main function of the digestive system
break down foods for absorption into the blood
All living organisms are dependent on plants because
Plants are producers
These organisms are typically at the top of the food chain. They are called ____________ consumers.
What is tertiary
What is the main function of the circulatory system
Transport materials
A tomato is considered a fruit because it is produced from a flower and contains seeds. Tomatoes are produced by this type of reproduction.
sexual reproduction / seeds
Last step of scientific method.
What is share your results with other scientists?
If the environment changes more quickly than the a species can adapt, what could happen to the species?
It could become extinct
The endocrine system produces chemicals that affect organ function, what are these chemical called?
Hormones
In humans, how many chromosomes do you get from each parent?
23
___________ are small segments of the chromosome that code for a specific traits.
genes
The arrows in a food chain show the flow of _______.
Energy
A single strawberry plant can produce long stems called runners. When runners reach open ground, they can grow roots and develop into a new strawberry plant. This is an example of what type of reproduction?
asexual reproduction
Animals are dependent on plants for oxygen and ______.
food source
Which body system is used to give your body support and structure?
Skeletal
Which organelle is responsible for holding the organelles in place and is gel-like?
cytoplasm
What is it called when there is an error in an organism's DNA?
mutation
Different species of carnivorous animals share the same habitat in an ecosystem may
a. become decomposers
b. compete for food
c. produce their own food
d. mate with each other
b
AA would represent a _____________ genotype
homozygous
Which type of trait is the "weaker" trait?
Recessive
A relationship between two species in which one species benefits and the other is neither helped nor harmed
What is commensalism?
Aa would represent a ______________ geneotype
heterozygous
Identify a producer
grass, weeds, flowers, ect
These organisms are herbivores, therefore they are called ______________ consumers.
What is primary consumers?
Two different forms of a gene are called this
What is allele?
Describe the levels of organization from smallest to biggest
cell--tissue--organ--organ system---organism
This is the variable in the experiment the scientist changes.
What is independent variable?
What is a producer?
A producer is able to make its own food.
It is able to break down dead and decaying material and fix nitrogen to help plants grow.
Water, sunlight, CO2
What are 2 structures found in plants and NOT animal cells.
Cell Wall and Chloroplast
What is the percentage of energy LOST as it moves from producer to primary consumer to secondary consumer?
What is 10%?
What is the sum of all chemical reactions in the human body
Variation and differences in humans result from
sexual variation and mutations