Living Environment Review for Final Part 2

Compared to the normal body cell, a normal egg cell contains

• the same number of chromosomes

• half the number of chromosomes

• twice the number of chromosomes

• four times the number of chromosomes

Answer explanation

all gametes, including sperm cells have 1/2 chromosome numbers

Which is correct concerning hereditary information?

• A chromosome is composed of many genes

• a gene is composed of many chromosomes

• each chromosome carries the same information

• each gene carries the same information

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which phrase best describes a gene?

• a segment of a DNA molecule found only in the body cell of an organism

• a segment of a DNA molecule found only in the gametes of an organism

• a segment of a DNA molecule that contains the instructions for producing a train in an organism

• a segment of a DNA molecule that contains the instructions for producing all the characteristics of an organism

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which sequence correctly represents the arrangement of structures containing the genetic material, from the largest to the smallest size?

• chromosomes -> gene-> nuleus

• nucleus->chromosome->gene

• gene->chromosome->nucleus

• gene->nucleus->chromosome

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A new chemical was discovered and introduced into a culture containing one species of bacteria. Within a day, most of the bacteria were dead, but a few remained alive. Which statement best explains why some of the bacteria survived?

• They had a genetic variation that gave them resistance to the chemical

• They were exposed to the chemical long enough to develop a resistance to it.

• they mutated and became a different species after exposure to the chemical

• they absorbed the chemical and broke it down in their digestive systems.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-5

To determine the identity of their biological parents, adopted children sometimes request DNA tests. These test involve comparing DNA samples taken from the likely parents. Possible relationships may be determined from these tests because the

• the base sequence of the father determines the base sequence of the offspring

• DNA of parents and their offspring is more similar than the DNA of nonfamily members

• position of the genes on each chromosome is unique to each family

• the mutation rate is the same in closely related individuals

Tags

NGSS.HS-LS3-1

The DNA of a fly and the DNA of a gorilla are made up of subunits that are

• arranged in the same order in both species

• arranged in chains of the same length in both species

• different bases in each of the two species

• indifferent sequences in each of the two species

Tags

NGSS.HS-LS3-1

In a portion of a gene, the nitrogenous base sequence in T-C-G-A-A-T. WHich nitrogenous base sequence would normally be found bonded to this section of the gene?

• A-C-G-T-A-A

• A-C-G-U-U-A

• A-G-C-T-T-A

• U-G-C-A-A-U

Tags

NGSS.HS-LS1-1

The molecule DNA contains the four bases listed below.

C-cytosine

G-Guanine

A-Adenine

T-Thymine

C-Cytosine

Which base pairings normally occur during DNA replication?

• Guanine pairs with cytosine. Thymine pairs with thymine

• Adenine pairs with thymine. Cytosine pairs with guanine

• Thymine pairs with guanine. Cytosine pairs with adenine.

• Cytosine paris with cytosine. Thymine pair with Thymine.

In a cell, protein synthesis is the primary function of

• ribosomes

• chloroplasts

• mitochondria

• vacuoles