Q:

Land is considered a resource because it

A) is used to produce things	B) requires labor to be useful
C) is always available to use	D) costs little or nothing to use

Answer & Explanation Answer: A) is used to produce things

Explanation:

Land is considered as an important resource because it is useful in producing many things. For example, in agriculture, land is used for cultivating the crop, in industrial use, it is used for constructing factories and to make products that we use.

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Q:

Strength of concrete increases with

A) increase in fineness of cement	B) decrease in size of aggregate
C) increase in water cement ratio	D) decrease in curing time

Answer & Explanation Answer: C) increase in water cement ratio

Explanation:

Strength of concrete increases with increase in water cement ratio as the strength of the cement is directly proportional to water cement ratio.

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Q:

As an infant, the ability to produce antibodies is

A) about 80% of that of an adult	B) nonexistent
C) limited	D) the same as an adult

Answer & Explanation Answer: C) limited

Explanation:

As an infant, the ability to produce antibodies is limited.

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Q:

How many Nucleotides make up a Codon?

A) 3	B) 4
C) 5	D) 6

Answer & Explanation Answer: A) 3

Explanation:

3 Nucleotides make up a Codon.

The nucleotide triplet that encodes an amino acid is called a codon.

Each group of three nucleotides encodes one amino acid.

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Q:

Select the correct statement about the ureters.

A) The ureter is innervated by parasympathetic nerve endings only.	B) Ureters contain sphincters at the entrance to the bladder to prevent the backflow of urine.
C) The epithelium is stratified squamous like the skin, which allows a great deal of stretch.	D) The ureters are capable of peristalsis like that of the gastrointestinal tract.

Answer & Explanation Answer: D) The ureters are capable of peristalsis like that of the gastrointestinal tract.

Explanation:

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Q:

Which statement correctly describes the role of chance in evolution?

A) An allele that increases evolutionary fitness cannot be lost from a population by chance events.	B) The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
C) Evolutionary change proceeds by an accumulation of changes that occur by chance.	D) None of the above

Answer & Explanation Answer: B) The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA

Explanation:

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Q:

What are the end products of cellular respiration?

A) ATP, Glucose	B) Glucose, Oxygen
C) Oxygen, Water	D) ATP, Water

Answer & Explanation Answer: D) ATP, Water

Explanation:

Cellular respiration is the three-step process by which cells make ATP using glucose and oxygen.

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP, waste products include carbon dioxide and water.

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Q:

"When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler".

A) Law of conservation of energy	B) Newton's third law of motion
C) Law of Inertia	D) Law of conservation of momentum

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