In which of the following areas would secondary succession most likely occur?

A previously forested area devastated by fire

Deamination is when the liver converts amino acids to be used in metabolism & produces urea.

The liver works with the Excretory system

A mutation is least likely to affect a cell when the mutation

produces a triplet that codes for the same amino acid

Unlike cells, viruses

cannot reproduce unless inside a host cell

During protein synthesis, the translation process

involves tRNA that each carry 1 kind of amino acid

What two agents convert nitrogen gas into forms that organisms can use?

Nitrogen-fixing bacteria and lightning

The following is the best example of an organism with a genetic variation that helps survival

An ant that is resistant to pesticide

Which of the following describes homeostasis maintenance in the body?

Hormones stimulating cells to take up sugar from your blood

Why is maintenance of a constant blood pH critical for body processes?

Enzymes work best within a narrow pH range

Zebras are African grazing animals. Which animal is predicted to have similar adaptations?

An animal that competes with zebra for resources

Scientists use cladograms to:

Examine evolutionary relationships

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Questions 19

Answers

1
The following body system would most likely be affected by a disease that impairs smooth muscle
Digestive (A)
Circulatory (B)
Both A and B
Neither A nor B
2
In which of the following areas would secondary succession most likely occur?
A lava flow
An area with a well-balanced, climax community
A previously forested area devastated by fire
A rock ledge exposed by the melting glacier that covered it
3
All forms of cancer are characterized by
the spreading of abnormal cells to tissues across the body
A, B and C
the aggregation of cells into a mass called a tumor
an abnormal, unregulated production of cells
4
Halophiles & thermophiles are unicellular, prokaryotes living in harsh conditions. They belong
to Kingdom Archaebacteria
to Kingdom Eubacteria
to Kingdom Protista
to Kingdom Fungi
5
ALL are characteristics of Eukaryotes EXCEPT:
Absence of a nuclear membrane
Membrane bound organelles
Organized nucleus
Found in plants and animals
6
Deamination is when the liver converts amino acids to be used in metabolism & produces urea.
The liver works with the Respiratory system
The liver works with the Endocrine system
The liver works with the Nervous system
The liver works with the Excretory system
7
Lichen is an example of this type of symbiosis between fungus and cyanobacteria or algae?
Commensalism
Neutralism
Mutualism
Parasitism
8
A mutation is least likely to affect a cell when the mutation
produces a triplet that codes for the same amino acid
Reverses the order of the bases in a DNA strand
Replaces a base with its complementary base
Allows the total number of bases to stay the same
9
Unlike cells, viruses
do not have nucleic acids
can reproduce on their own
are not made of proteins
cannot reproduce unless inside a host cell
10
During protein synthesis, the translation process
does not always involve mRNA
involves tRNA that each carry 1 kind of amino acid
requires RNA polymerases
takes place in the nucleus
11
What is the role of ATP?
Storing fat
Releasing energy
Forming the backbone of DNA
Controling blood-glucose levels
12
What two agents convert nitrogen gas into forms that organisms can use?
Fertilizer & denitrifying bacteria
Nitrogen-fixing bacteria and lightning
Denitrifying & nitrogen fixing bacteria
Enzymes & ammonia
13
The following is the best example of an organism with a genetic variation that helps survival
A wasp that is infected with parasites
An ant that is resistant to pesticide
A mouse that has learned to avoid mousetraps
A cactus that has no spines
14
DNA molecules, which store the genetic code, are found in:
All organisms
Animals but not plants
Viruses but not cells
Eukaryotes but not prokaryotes
15
Which of the following describes homeostasis maintenance in the body?
Your brain enabling you to remember a funny moment
When you watch a scary movie and your heart races
Hormones stimulating cells to take up sugar from your blood
Your nervous system stimulating your leg muscles to contract
16
Both proteins and complex carbohydrates are which of the following:
Lipids of large molecules
Sequences of sugar
Polymers of smaller subunits
Nucleotides of DNA
17
Why is maintenance of a constant blood pH critical for body processes?
Blood with a high pH helps prevent cancer
The production of vitamin C by skin cells requires a low pH
Enzymes work best within a narrow pH range
Some bacteria thrive in very acidic conditions
18
Zebras are African grazing animals. Which animal is predicted to have similar adaptations?
A microorganism living symbiotically with zebras
An animal that competes with zebra for resources
A grazing animal native to North America
a predator of zebras native to African grasslands
19
Scientists use cladograms to:
Show chromosome numbers
Trace genetic combinations within a family
Examine evolutionary relationships
Identify species using scientifc names

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