Unit 1-2
Do enzymes speed up or slow down a chemical reaction?
speed up
What happens in the S-phase
DNA replication
How many bases are in a codon?
3
Tall is dominant to short pea plants. If the parents genotypes are Tt x Tt, what percentage of their offspring would display a heterozygous genotype?
50%
Which best describes a primary consumer:
1. autotrophic
2. heterotrophic herbivore
3. heterotrophic carnivore
2. heterotrophic herbivore
True or false: pH and temperature do not denature an enzyme
false
Fill in the blank using the word bank below the question: mitosis is ____, _____, _____. Meiosis is ____, ______, ______
Word bank: 2n, n, diploid, haploid, 2 daughter cells, 4 daughter cells
Mitosis: 2n, diploid, 2 daughter cells
Meiosis: n, haploid, 4 daughter cells
A-T-C-G is DNA or RNA
DNA
List 1 environmental factor that might affect gene expression for height
possible answers-disease, nutrition, exercise
Arrows in a food web or food chain indicate
energy flow
What is the polymer of DNA and RNA
Nucleic acid
Which the water move in or out of the cell- Salt inside the cell 65% and outside the cell 40%
Into the cell
Name the bond that holds together the strands of DNA
Hydrogen bond
True or false: Early Earth had lots of oxygen
False
What relationship is it: mistletoe extracts water and nutrients from the spruce tree. This harms the tree.
parasitism
This organelle controls what goes in and out of the cell
cell membrane
What are the products of photosynthesis?
Glucose and oxygen
Which occurs in the nucleus, transcription or translation?
transcription
List and describe one reason of evidence of evolution
Possible answers-fossil, anatomical, biochemical,
What type of relationship: Lactobacilli live in our lungs. they destroy many negative microorganisms that enter our respiratory system. They are highly adapted to living in our lungs and can't survive in many other habitats.
Mutualism
List two differences between prokaryotes and eukaryotes
possible answers: pro=simpler, non membrane bound organelles, no nucleus
What are the reactants of respiration?
Glucose and oxygen
Name 2 ways that DNA fingerprinting can be beneficial
Paternity and forensics
What two things must you include when writing the scientific name of an organism?
Capitalize genus, italicize or underline genus and species
What is the number 1 cause of all environmental problems
human population