Scientific Method
True or False: You can test multiple variables at once in an experiment.
False
True or False: Heart cells and liver cells are able to perform different functions because they have different DNA. If False, explain why.
False - they have identical DNA but turn on specific genes to perform different functions.
Identify the phenotype of a person with the genotype rr. (R - can roll tongue, r - cannot roll tongue).
cannot roll tongue
Today, there are about 150 different breeds of domestic dog. The great variety of modern dogs can best be explained by what process?
selective breeding
Trial A: 40 out of 50 participants in a clinical trial for a drug to reduce stress reported feeling less stress after the trial.
Trial B: 4 out of 5 participants in a clinical trial for a drug to reduce stress reported feeling less stress after the trial.
Which trial should you trust more and WHY?
Trial A. A larger sample size is more reliable.
how many chromosomes are in a human body cell?
46
meiosis
State one reason someone might NOT want to use genetic engineering.
unethical, should leave things natural, religious reasons, etc.
Mr. Urda wants to know if eating healthier will make him more funny. What is his experimental question?
Does eating healthy affect funniness?
Organelle where proteins are assembled
ribosome
True/False: All gametes in a person are identical.
False, they are all unique.
in genetic engineering, the DNA is cut using a type of
enzyme
Name at least 3 control variables for the following experimental question:
"Does sunlight affect the height of plant A?"
any 3: amount of water, temperature, amount of soil, soil type, container, depth of seed in soil, etc.
This process is the division of the parent cells chromosomes, resulting in two identical nuclei for each daughter cell.
Mitosis
gametes contain ______________ the amount of DNA as a body cell.
half, 50%
What type of genetic technology involves placing the DNA of an organism into the egg of another organism?
Cloning
Name the dependent variable in the following experimental question:
"Does the amount of sleep a scholar gets affect their test scores?"
test scores
The building blocks of proteins are...
amino acids
What is the probability (%) of the offspring having blue eyes from parents with genotypes BB and Bb? (B - brown eyes, b - blue eyes)
0%
Identify the type of technology used in the image.
Genetic engineering