WorksheetsRAHS Bio B Final Review
Total questions: 30
Worksheet time: 15mins
(U1) What is one reason cells need to divide?
Their surface area to volume ratio gets too small.
Their surface area to volume ratio gets too large.
They run out of space.
There is a chemical reaction.
(U1) Copies of chromosomes (DNA) are made during which phase of mitosis?
Interphase G1
Interphase S
Interphase G2
Prophase
(U1) What is the result of mitosis?
Two identical cells
Two cells with half of the chromosomes of the original
Two similar cells
Two cells with genetic variation
(U1) Choose all of the statements that are true.
Plant cells make a cell plate during telophase.
Plant cells have centrioles.
Animal cells make a cell plate during telophase.
Animal cells have centrioles.
(U1) What happens during crossing over in meiosis?
It creates exact copies of the chromosomes.
Chromosomes from the mother and father separate.
Chromatids get pulled in half.
Chromatids trade pieces of DNA.
(U1) Which are the end results of meiosis?
Four sperm cells with genetic variation.
Four identical sperm cells.
Four egg cells with genetic variation.
One unique egg cell and three polar bodies.
(U2) What influences our phenotypes? (Choose all correct answers.)
One parent's genes
Both parents' genes
Our environment
They are random chance.
(U2) What is the term for an allele that is always expressed when it's present?
Recessive
Dominant
Heterozygous
Homozygous
(U2) Which Punnett Square shows how a parent with a recessive phenotype and a parent with a dominant phenotype can have a baby with the recessive phenotype?
(U2) If white represents a recessive trait, what is the genotype of person I-2?
AA
Aa
aa
XAXa
(U2) If a red horse and white horse have three babies who are all roan (red and white), what type of trait is this?
dominant/recessive
sex-linked
codominant
pedigree
(U2) Colorblindness is a sex-linked recessive trait. Which parents would have 100% normal vision daughters and 100% colorblind sons?
(U3) What causes cancer?
A point shift mutation
A point mutation
When a cell doesn't divide when it needs to
When a cell keeps dividing when it doesn't need to
(U3) In the picture, what part of the DNA is the green circle?
Phosphate
Base
Dixoyribose
Ribose
(U3) Which problems are caused by gene mutations?
rRNA reads the wrong codons
mRNA has the correct codons
A protein has the wrong amino acids
tRNA brings the wrong amino acids
(U3) Which amino acid does the DNA sequence GTA code for? (Don't forget to make mRNA first.)
His
Gln
Val
Leu
(U3) What happens during transcription and where does it happen?
mRNA works with rRNA and tRNA to make proteins; in the cytoplasm
mRNA works with rRNA and tRNA to make proteins; in the nucleus
one strand of DNA makes one strand of mRNA; in the cytoplasm
one strand of DNA makes one strand of mRNA; in the nucleus
(U3) What process does this picture show?
DNA replication
Transcription
Translation
Mitosis
(U4) If scientists cut off the tails of baby mice, it does not affect their lives. When those mice have babies, their babies are born with normal tails. Who does this prove wrong?
Franklin
Darwin
Einstein
Lamarck
(U4) Which are examples of variation?
All flowers have pollen
Skin color in humans
Thickness of polar bear coats
Bacterial live in every environment in the world
(U4) Darwin said that giraffes have long necks because...
the giraffes with long necks were more likely to survive and reproduce.
the giraffes with long necks stretched their necks by reaching for food in tall trees.
the giraffes who stretched their necks had babies with longer necks.
all of the giraffes with short necks were killed off by disease.
(U4) About how old is the earth?
100 million years
1 billion years
5 billion years
10 billion years
(U4) Choose all of the traits that ONLY hominids and not other primates have.
fingernails instead of claws
opposable thumbs
bipedal
stereoscopic vision
(U4) How are humans and apes related?
Humans evolved from apes
Humans and apes share a common ancestor
All mammals came from apes
Humans are a variety of ape
(U5) Which is true of both sperm and eggs?
They are the same size.
Our bodies make the same amounts of each.
They are the made at the same rate.
They have the same number of chromosomes.
(U5) Where does fertilization happen in humans?
Ovary
Fallopian tube
Uterus
Vagina
(U5) During which days of a 28-day menstrual cycle do women ovulate?
Days 1-3
Days 3-6
Days 13-15
Days 25-28
(U5) Which are the main reproductive organs?
Penis
Vagina
Ovaries
Testicles
(U5) Which correctly pairs male and female sex hormones?
female = estrogen; male = progesterone
female = testosterone; male = estrogen
female = progesterone; male = testosterone
female = estrogen; male = testosterone
(U5) Which is NOT found in both males and females (after puberty)?
armpit hair
hormones
urethra
cowper's glad
