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