A strand of DNA is exposed to intense heat. What will happen?

The chemical bonds of the DNA molecule will be broken.

Which best explains the difference btwn. the way animals and plants exchange gases?

Animals use respiration and plants use both.

What is the result of the fertilization of an egg?

It restores the diploid number of chromosomes.

Polar bears eat seals. They rest on sea ice while hunting. Ice is melting due to global warming

Polar bear pop. will decrease and seal pop. will increase.

What is the MAIN function of a selectively permeable cell membrane?

regulates what enters and leaves the cell

The papaya mealybug is a threat to plants. What fate of the mealybug if it couldn't reproduce?

the species would become extinct

Which of these would lead to a LOWER RATE of photosynthesis in a plant?

a decrease in the amount of carbon dioxide in the air.

Which best describes the initial change caused by DNA mutation?

a change in the sequence of base pairs.

Salamanders need clear,fresh water to live. A flood causes sediment to be suspended in the H20.

The salamanders will decrease because of the H20 quality.

A forest fire destroys the majority of trees in a state park. Effect on secondary consumers?

Energy decrease bc fewer primary con. will live wo plants

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Biology EOC Review #1

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Questions 18

Answers

1
The gopher snake uses its glottis to produce a hiss like a rattlesnake's rattle. Best reasonwhy
to increase adrenaline flow
to confuse predators
to attract prey
to attract a mate
2
What is the role of hydrogen bonds in the structure of DNA?
to code for proteins
to separate the strands
to synthesize proteins
to connect the base pairs
3
Which process allows for an organism to increase the # of body cells during development?
budding
meiosis
mitosis
conjugation
4
A strand of DNA is exposed to intense heat. What will happen?
The base pairs in the DNA molecule will switch places.
More nitrogen base pairs will add to the DNA molecule.
The chemical bonds of the DNA molecule will be strengthened.
The chemical bonds of the DNA molecule will be broken.
5
Which best explains the difference btwn. the way animals and plants exchange gases?
Animals use respiration and plants use both.
Animals use only photosynthesis, while plants use both.
Animals use both while plants use only photosynthesis.
Animals use both while plants use only respiration.
6
Which structure is primarily responsible for directing ALL processes of a plant cell?
chloroplast
lysosome
nucleus
mitochondria
7
What is the result of the fertilization of an egg?
It gives offspring fewer chromosomes than the parents.
It gives offspring more chromosomes than the parents.
It deletes polypeptide chains in the chromosomes.
It restores the diploid number of chromosomes.
8
Polar bears eat seals. They rest on sea ice while hunting. Ice is melting due to global warming
Polar bear pop. will decrease & seal pop. will stay the same
Polar bear pop. will increase, and seal pop. will decrease.
Polar bear pop. will decrease and seal pop. will increase.
Polar bear and seal populations will both increase.
9
What is the MAIN function of a selectively permeable cell membrane?
storage of water
storage of chemicals
regulates what enters and leaves the cell
breaks down molecules within the cell
10
A reduction in which of these would lead to a decrease in ALL the other populations in the web?
snake
grasshoppers
coyote
grass
11
The papaya mealybug is a threat to plants. What fate of the mealybug if it couldn't reproduce?
the species would continue to thrive
the species would mutate
the species would become extinct
the species would increase
12
Which of these would lead to a LOWER RATE of photosynthesis in a plant?
an increase in the amount of oxygen in the air.
an increase in the amount of carbon dioxide in the air.
a decrease in the amount of carbon dioxide in the air.
a decrease in the amount of oxygen in the air.
13
The loss of a habitat caused some plant species to bc extinct, while other survive.
Law of segregation
Alternation of generations
Biological magnification
Natural selection
14
Which best describes the initial change caused by DNA mutation?
a change in the # of nucleosomes within a cell
a change in the sequence of base pairs.
a change in the production of enzymes
a change in the # of hydrogen bonds btwn the bases.
15
Rats and pigs eat loulu fruit with a seed What will happen in the next century wo intervention?
Trees would remain at current levels
Trees would evolve a new way to reproduce.
Trees would rebound and survive.
Trees would bc extinct.
16
Round wings R are dominant to pointed r. Which would produce the greatest number of variations?
RR x RR
Rr x Rr
rr x rr
Rr x RR
17
Salamanders need clear,fresh water to live. A flood causes sediment to be suspended in the H20.
The salamanders will move to another river.
The salamanders will adapt to life on land
The salamanders will decrease because of the H20 quality.
The salamanders will adapt to living in the muddy river.
18
A forest fire destroys the majority of trees in a state park. Effect on secondary consumers?
Energy decrease bc fewer primary con. will live wo plants
The amt of energy will increase bc there are fewer predators
energy will increase bc there is less competition from prod.
Energy stay same bc 2nd cons. are not reliant on primary.

Biology EOC Review #1 Flashcards | StudBud