EOC Biology Texas

The range of different inherited traits in a species.

• Evolution

• Genetic diversity

• Common ancestor

• Fitness

Answer explanation

The correct answer is genetic diversity because it refers to the range of different inherited traits within a species, highlighting the variation in genes that contribute to the overall diversity.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

The physical appearance/trait of an organism.

• Heredity

• Phenotype

• Genotype

• Pedigree

Answer explanation

The correct choice is 'Phenotype' as it refers to the physical appearance/trait of an organism.

Tags

NGSS.HS-LS3-1

What is one way that a lysogenic infection differs from a lytic infection?

• A lysogenic virus does not act on bacteria as a lytic virus does.

• A lysogenic virus can remain in the host DNA for a longer period without becoming active.

• A lysogenic virus contains RNA instead of DNA.

• A lysogenic virus directs the production of new viruses right away.

Answer explanation

A lysogenic virus can remain in the host DNA for a longer period without becoming active.

Which of the following is the only characteristic shared by living cells and viruses?

• the presence of carbohydrates

• the ability to reproduce

• the presence of the nucleic acid

• a cell membrane

Answer explanation

The only characteristic shared by living cells and viruses is the presence of nucleic acid, making it the correct choice.

The diffusion of water through a semi-permeable membrane is called?

• Osmosis

• Cell wall

• Diffusion

• Respiration

Answer explanation

Osmosis is the diffusion of water through a semi-permeable membrane, making it the correct choice in this context.

Which property is shared by the cells of all living things?

• The cells contain DNA composed of adenine, thymine, guanine, and cytosine.

• The cells are surrounded by a phospholipid bilayer and a cell wall made of cellulose.

• The cells have chromosomes that are located inside a membrane-bound nucleus.

• The cells rely on mitochondria to carry out aerobic cellular respiration.

Answer explanation

The property shared by all living cells is that they contain DNA composed of adenine, thymine, guanine, and cytosine.

Tags

B.6(B)

Which model accurately shows a cell progressing through mitosis?

• 
• 
• 
• 

Tags

NGSS.HS-LS1-4

Which body system is responsible for pumping blood throughout the body?

• Digestive system

• Circulatory system

• Respiratory system

• Nervous system

Answer explanation

The circulatory system is responsible for pumping blood throughout the body, making it the correct choice.

What is the probability of two heterozygous parents producing an offspring with a homozygous recessive genotype?

• 50%

• 25%

• 75%

• 10%

Answer explanation

The probability of two heterozygous parents producing an offspring with a homozygous recessive genotype is 25% according to the Punnett square. This is because there is a 25% chance of the offspring inheriting two recessive alleles.

Tags

NGSS.HS-LS3-3

Scientists can determine relatedness among organisms by comparing partial amino acid sequences. The table shows four partial amino acid sequences from four organisms.

Which organism is the LEAST related to the other three organisms?

• Organism 1

• Organism 2

• Organism 3

• Organism 4

Answer explanation

Organism 2 is the least related because it has the most differences in its amino acid sequence compared to the other organisms, indicating a lower level of relatedness.

Tags

NGSS.HS-LS4-1