A freshwater plant is placed in a container of saltwater. What will most likely happen to the cells of the plant?

• They will swell because water will move into them.

• They will swell because salt will move into them.

• They will shrink because water will move out of them.

• They will shrink because salt will move out of them.

Tags

NGSS.HS-LS2-3

Which part of the DNA model is most directly associated with the coding of genetic information?

• Hydrogen bonds

• Deoxyribose

• Phosphate groups

• Nitrogen bases

Tags

NGSS.HS-LS1-1

Meiosis is a cellular process that results in the production of haploid gametes. Which statement accurately explains the necessity for gametes to be haploid?

• fertilization results with a haploid zygote

• the gamete chromosomes will be replicated prior to cell division

• two gametes will unite during fertilization to create a diploid cell

• gametes are small and can hold only the haploid number of chromosomes

Tags

NGSS.HS-LS3-2

Which statements explain how a mutation in a somatic cell is different from a mutation that occurs in gametes?

• Somatic cell mutations will not be expressed by the individual that contains the mutation.

• Gamete mutations will be expressed by the individual.

• Somatic cell mutations are generally not passed to offspring.

• Gamete mutations are usually passed to offspring.

Tags

NGSS.HS-LS3-2

A prokaryotic cell and a eukaryotic cell are shown. Which characteristic best distinguishes these cells as either a prokaryote or eukaryote?

• The location of the genetic material

• The role of the cell membrane

• The function of the flagella

• The location of the cytoplasm

Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?

• Enzymes are activated by neighboring molecules.

• Enzymes are specific to a substrate.

• Enzymes can be found in all life-forms

• Enzymes can operate in a wide range of conditions.

The activities in the cell cycle occur during specific phases. In which phase of the cell cycle is DNA replicated?

• G2 phase

• G1 phase

• S phase

• Mitosis

A sequence of a DNA template strand is shown. Which of these is the correct amino acid chain produced from the DNA template strand?

• Serine - Leucine - Proline - Asparagine - Lysine - Arginine

• Tryptophan - Phenylalanine - Leucine - Glycine - Asparagine - Phenylalanine

• Tryptophan - Phenylalanine - Leucine - Glycine - Asparagine – Serine

• Arginine - Leucine - Proline - Asparagine - Lysine - Arginine

Tags

NGSS.HS-LS1-1

A student makes a Venn diagram to compare the functions of carbohydrates and lipids. Which common function of carbohydrates and lipids should be placed in the shared section of the diagram?

• Energy storage

• Structural support of cell walls

• Catalyst of chemical reaction

• Hormone production

A student constructed a model to illustrate some of the processes involved in the production of proteins in a eukaryotic cell. Which statement correctly describes the structure and activity identified by the letter X?

• A tRNA molecule reacts with an amino acid to produce ribosomal RNA.

• An rRNA molecule carries an amino acid away from the site of protein synthesis.

• A tRNA delivers amino acids to the ribosome so that they can be added to the developing polypeptide.

• An mRNA molecule transports a single amino acid to the site of protein synthesis.