LSUE BIOLOGY 1001 LATEST EXAM 2024 WITH

LSUE BIOLOGY 1001 LATEST EXAM 2024 WITH

QUESTIONS AND WELL VERIFIED ANSWERS ||

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Which of the following statements regarding a DNA double helix is always true?

• the amount of adenine is equal to the amount of uracil, and the amount of

guanine is equal to the amount of cytosine

• the amount of adenine is equal to the amount of guanine, and the amount of

thymine is equal to the amount of cytosine

• the amount of adenine is equal to the amount of cytosine, and the amount of

guanine is equal to the amount of thymine

• the amount of adenine is equal to the amount of thymine, and the amount of

guanine is equal to the amount of cytosine - ANSWER-D) the amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine

Experiments have demonstrated that the "words" of the genetic code (the units that specify amino acids) are

• two nucleotides sequence
• sequences of anticodon
• three nucleotides sequences
• nucleotides sequences of various lengths
• single nucleotides - ANSWER-C) three nucleotides sequences 1 / 4

A physical or chemical agent that changes the nucleotide sequence of DNA is called a

• codon
• anticodon
• mutagen
• terminator
• transposon - ANSWER-C) mutagen

Which of the following takes place during translation?

• the conversion of genetic information from the language of nucleic acids to the

language of proteins

• the conversion of genetic information form DNA nucleotides into RNA

nucleotides

• the conversion of genetic information from the language of proteins to the

language go enzymes

• DNA replication - ANSWER-A) the conversion of genetic information from the

language of nucleic acids to the language of proteins

The monomers of DNA and RNA are

• monosaccharides
• nucleotides
• fatty acids
• nucleic acids - ANSWER-B) nucleotides

The transfer of genetic information from DNA to RNA is called 2 / 4

• translation
• transcription
• initiation
• elongation - ANSWER-B) transcription

Conjugation between a bacterium that lacks an F factor (F-) and a bacterium that has an F factor on its chromosome (F+) could produce which of the following results?

• The F- bacterium ends up carrying one or more plasmids from the F+

bacterium; the F+ bacterium in unchanged

• The F+ bacterium ends up with a recombinant chromosome that carries some

genes from the F- bacterium, and the F- bacteria ends up with an unaltered chromosome

• F- and F+ bacteria became genetically similar
• The F+ bacterium ends up with a recombinant chromosome that carries some

genes from the F- bacterium, and the F- bacterium ends up with a chromosome that lacks those genes

• The F- bacterium ends up with a recombinant chromosome that carries some

genes from the F+ bacterium, and the F+ bacterium ends up with an unaltered chromosome - ANSWER-E) The F- bacterium ends up with a recombinant chromosome that carries some genes from the F+ bacterium, and the F+ bacterium ends up with an unaltered chromosome. Which of the following is a function of tracheid?

• food storage
• photosynthesis
• production of sex cells
• water conduction - ANSWER-D) water conduction

Which of the following statements about germination is false? 3 / 4

• The germination of a seed represents the beginning of life
• Germination usually begins when a seed takes up water
• A hydrated seed expands, rupturing its seed coat
• Germination usually takes place after a period of dormancy - ANSWER-A) The

germination of a seed represents the beginning of life

While cleaning out the attic, you find a packed of seeds that your grandmother gathered from her garden. You plant them outside, and some of them sprout. What was the condition of these germinating seeds while they were in the attic?

• The endosperm cells were dead; the embryo cells were alive but inactive
• They were dead, but the embryo cells revived in response to water
• They were alive and very metabolically active
• They were alive but dormant - ANSWER-D) They were alive but dormant

Which of the following biomes is dominated by coniferous tree adapted to surviving long, hard winters and short, wet summers?

• coniferous forests
• tundra
• temperate broadleaf forest
• savanna - ANSWER-A) coniferous forests

Which of the following statements about temperate broadleaf forests is true?

• Temperate broadleaf forests have a narrow range of temperatures over the

course of a year

• Oak, hickory, birch, beech, and maple are common trees in temperate broadleaf

forests

• / 4