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