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Duplicate of EOC review
Duplicate of EOC review
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MO biology EOC review
Flashcards
34 cards
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Practice quiz
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Host live
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Questions
34
Answers
1
A cell with 24 chromosomes undergoes mitosis twice. How manychromo will each daughter cell have
6
24
48
12
2
What is the difference between the way animals and plants exchange gases with their enviro?
animals photo & cell respiration plants only photo
animal only photo plants photo & cell respiration
animals only cell respiration plants photo & cell resp
animals photo & cell respiration plants only cell resp
3
Which structure is primarily responsible for directing all processes of a plant cell?
mitochondria
lysosome
nucleus
chloroplast
4
Which process allows for an organism to increase the number of body cells during development?
conjugation
budding
mitosis
meiosis
5
An introduced snake caused a decline in mice and an increase in the snake. Why?
peopled killed mice, snakes increased - loss of predator
competition
snakes dominated, mice left
mice were the snake prey
6
What is the result of the fertilization of an egg?
gives offspring more chromosomes than the parents
restores the diploid number of chromososmes
gives offspring fewer chromosomes than the parents
deletes polypeptide chains in the chromosome
7
Which of these shows the steps by which proteins are coded and synthesized?
DNA - RNA - protein
RNA - DNA - protein
protein - RNA - DNA
protein - DNA - RNA
8
Which cross will produce the greatest number of genotypic and phenotypic variations?
RR x RR
Rr x RR
rr x rr
Rr x Rr
9
Which best describes an advantage of asexual reproduction fora population of organisms?
population can adapt more quickly to a changing environment
population can increase in number more rapidly
population can maintain the same number of organisms
population can develop greater genetic diversity
10
Some species survive & others do not in a changing environment is best explained by
alternation of generations
biological magnification
law of segregation
natural selection
11
Which statement describes a way in which cellular respiration differs from photosynthesis?
CR consists of 2 phases
CR releases carbon dioxide
CR is carried out in one specific organelle
CR provides energy for the cell
12
Which would be least likely to diffuse across the phospholipid bilayer of a cell membrane?
sodium ion
carbon dioxide
water
oxygen
13
what is the main function of a selectively permeable cell membrane?
regulate what enters/exits cell
storage of chemicals
break down molecules
storage of water
14
Polar bears use sea ice while hunting seals. What result will continued global warming have?
polar bear increase, seal decrease
polar bear decrease, seal no change
both polar bear & seals increase
polar bear decrease, seal increase
15
How would a drop in temperature affect cell respiration and photosynthesis
Photo decrease, CR increase
photo increase, CR decrease
both remain same
both decrease
16
Which of these best describes the initial change caused by a DNA mutation?
a change in the production of enzymes
a change in the number of hydrogen bonds between the bases
a change in the sequence of base pairs
a change in the number of nucleosomes within a cell
17
Why does a gopher snake produce a hiss that sounds like a rattlesnake’s rattle?
to increase adrenaline flow
to attract prey
to confuse predators
to attract a mate
18
Which abiotic factor limits the altitude at which plants can grow?
temperature of the area
presence of herbivorous animals
concentration of soil microbes
presence of a parasite
19
A reduction in which of these would lead to a decrease in all other populations in the web?
grass
coyote
snake
grasshopper
20
What will happen to a population of freshwater salamander if the river floods?
adapt to living in muddy water
move to another river
decrease in number due to poor water quality
adapt to live on land
21
Two gametes with 20 chromosomes fuse. How many chromosomes will the zygote contain?
20
40
10
80
22
The chromosome structure in a cell accounts for genetic variation based on the order of its
hydrogen bonds
nitrogen bases
phosphate groups
sugar groups
23
What will happen to a cell that has a solute conc of 1% when placed in a 5% saltwater solution?
burst, more water outside than in
remain same, equal water on both sides
burst, more water inside than out
shrink, less water outside than inside
24
Which of these would lead to a lower rate of photosynthesis in a plant?
increase in the amount of oxygen in the air
decrease in the amount of oxygen in the air
increase in the amount of carbon dioxide in the air
decrease in the amount of carbon dioxide in the air
25
How many daughter cells are formed in meiosis?
0
4
2
1
26
What will likely occur as a result of non-native animals consuming large amounts of native tree
tree will rebound
tree will evolve new reproductive strategy
tree will remain at current numbers
tree will become extinct
27
What is the role of hydrogen bonds in the structure of DNA?
to connect the base pairs
to code for proteins
to synthesize proteins
to separate the strands
28
A strand of DNA is exposed to intense heat. What will likely happen to the strand of DNA?
chemical bonds of the DNA molecule will be broken
nitrogen base pairs in the DNA molecule will switch places
chemical bonds of the DNA molecule will be strengthened
More nitrogen base pairs will add on to the DNA molecule
29
Which effect will a forest fire most likely have on secondary consumers in the ecosystem?
energy increase, fewer predators
energy constant, consumers don't need producers
energy increase, less competition
energy decrease, fewer primary consumers
30
Which of these directly allows blood cells to transport oxygen to various parts of the body?
antibodies
platelets
hemoglobin
carbon dioxide
31
Which best explains the relationship among the cell structures in making protein?
Golgi makes protein, DNA codes ribosome to fold
nucleuscodes, protein assembled in ribosome, moved to Golgi
nucleus makes protein, protein travels Golgi, ribosome folds
nucleus directs Golgi to make protein, ribosome surrounds
32
Which of these best describes mutualism?
one benefits other is harmed
both benefit
neither benefit
one benefits other not affected
33
Which describes a molecule that can easily pass through selectively permeable membrane?
small, charged
small, not charged
large, not charged
large, charged
34
What fate would result from the inability of a species to reproduce?
species would mutate
species would become extinct
species would increase
species would continue to thrive
