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Biology MCAS Review
Biology MCAS Review
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2015 Biology MCAS Prep-Mr. Ehle Framingham High School
Flashcards
31 cards
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Questions
31
Answers
1
Sperm whales have vestigial hip bones, which best explains the presence of this structure?
Whales evolved from ancestors that walked on land
Embryonic development takes a long time
These structures are acquired during their lifetime
Whales are in the process of evolving into land animals
2
Which of the following is the
best
example of natural selection?
Bone density in humans increase as a result of sports
The average toxin level of frogs increase due to predation
Population of giraffes increase due to immigration
Lifespan of a chimpanzee is extended 60 years in captivity
3
At what step of mitosis does this occur? Copies of each chromosome are separating
Anaphase
Metaphase
Cytokinesis
Interphase: G1
4
A Red Flower(RR) and a White Flower(WW) make a Pink Flower (RW) what type of dominance is this?
Incomplete Dominance
Sex Linked Dominance
Homozygous Dominant
Codominant
5
Which of the following characteristics
best
classifies organisms into their taxonomic level?
Eating habits
Gene sequence
Method of reproduction
Location of habitat
6
In what trophic level do herbivores such as elk belong?
Decomposer
Primary Consumer (2nd)
Tertiary Consumer (4th and up)
Producer (1st)
7
Which of the following is the function of the Nucleus?
Absorb Sunlight Energy
Storing Genetic Material
Release Usable Energy
Producing Food Molecules
8
Which of these is
not
a factor that must be present for Natural Selection to occur?
Variation of offspring
Overproduction
All organisms survive
Organisms with the best traits for that environment survive
9
What is the number of cells and number of divisions in
Mitosis
and
Meiosis? (Cells, Divisions)
2,1 : 4,2
1,1 : 2,2
4,2 : 2,1
2,2 : 2,1
10
Whale fins and bat fins are anatomically similar, what does this suggest?
Whales and bats move in the same way
Whales and bats were once adapted for the same enviornment
Whales and bats have existed for the same amount of time
Whales and bats have a common ancestory
11
Which of the following elements are most abundant in peptidoglycan = cell wall of bacteria?
Potassium and Iodine
Aluminum and Sodium
Iron and Magnesium
Carbon and Hydrogen
12
What step explains Transcription?
RNA-Proteins
DNA-RNA
RNA-DNA
DNA-DNA
13
Which of the following is most likely to change when an enzyme is added to a reaction?
The pH
The temperature
The rate of reaction
The products of the reaction
14
Thyroxine and Estrogen are hormones secreted by endocrine glands. What is the role of hormones?
Regulate bodily functions
Remove toxins from body
Stimulate electiral nerve impulses
Supply energy to cells
15
How do Prokaryotic cells appear different from Eukaryotic cells?
The prokaryotic cell is much larger
The prokaryotic cells do not have a nucleus
The prokaryotic cell has a less distinct shape
The prokaryotic cell has mitochondria
16
Which of the following happens when a phosphate bond is broken in an ATP molecule?
Energy is Released
Water is transported into the cell
Lysosome contents are releases into cell
Light energy is stored in plants
17
Black hair (
B
) is dominant to brown hair (
b
). BB x Bb, What is the % kids with Black hair?
0
100
25
75
18
Which of the following processes removes carbon from the atmosphere?
Nitrogen Fixation
Cell Respiration
Photosynthesis
Decomposition
19
How many chromosomes should be in a baby's cell? How many are contributed by each parent?
23, 12 and 11
46, 46 and 46
92, 46 and 46
46, 23 and 23
20
If producers in a food web were removed what would happen?
The remaining populations would increase
The food web would collapse over time
The consumers would begin making energy for the food web
The food web would depend on decomposers for energy
21
Brown coloring is Dominant(B) to Blue coloring(b). What parent Genotypes will produce all blue?
BB x bb
BB x BB
bb x bb
Bb x Bb
22
What organisms are responsible for converting atmospheric nitrogen into a usable form 4 plants?
Nitrogen Fixing Bactera
Consumers
Decomposers
Denitrifying Bacteria
23
Where does an oxygen molecule go once inside the alveloi? and by what process does this occur?
Turns into CO2, Active Transport
Exhaled Out, Osmosis
Into the Heart, Diffusion
Into the Capillaries, Diffusion
24
Alleles that control seed color for a plant are shown: Gg- Is this heterozygous or homozygous?
Dominant
Heterozygous
Homozygous
Recessive
25
What is the function of a ribosome?
Synthesize Proteins
Store Energy
Remove Cell Waste
Breakdown Lipids
26
30% of the nitrogenous bases are thymine. What percentage of the nitrogenous bases are adenine?
20
30
70
60
27
Why do X-linked recessive traits in humans occur more frequently in males than in females?
Males take longer to develop to maturity
Males and females have different hormones
Transcriptionof X chromosome occurs more frequently in males
Males have one X chromo, girls have 2 copies of the x chromo
28
In what 3 structures of the Digestive System does chemical digestion occur?
Mouth, Esophagus, Large Intestine
Mouth, Stomach, Small Intestine
It only happens in 2 locations: Mouth and Stomach
Mouth, Esophagus, Stomach
29
The scientific name for the cougar is
Puma concolor
. Which organism is most closely related?
Lynx rufus
Corythaixoides concolor
Puma yagouaroundi
Panthera tigris
30
A mutation occurs in a individual but the individual’s phenotype does not change what happened?
A mutation deleted a section of DNA
The mutation occurred and changed the AA
A mutation affected the nucleotide sequence, but not the AA
A mutation caused a section of DNA to repeat
31
For the quickest source of energy, someone should eat food that contains the most?
Sodium
Lipds
Nucleic Acids
Carbohydates
