EOC Biology Texas

Organelle that creates proteins.

• Ribosome

• Nucleus

• Cell/Plasma Membrane

• Cytoplasm

Answer explanation

Ribosomes are the organelles responsible for creating proteins within the cell. They are the correct choice for this question.

Tags

NGSS.MS-LS1-2

Organelle that surrounds the cell ; only allows certain molecules in and out

• Ribosome

• Nucleus

• Cell/Plasma Membrane

• Cytoplasm

Answer explanation

The correct organelle that surrounds the cell and only allows certain molecules in and out is the Cell/Plasma Membrane.

Tags

NGSS.MS-LS1-2

Cell have several mechanisms for regulating their internal environments. Which of these mechanisms involved in maintaining homeostasis requires energy?

• osmosis

• diffusion

• active transport

• passive transport

Answer explanation

Active transport is the mechanism involved in maintaining homeostasis that requires energy, unlike osmosis, diffusion, and passive transport.

Tags

NGSS.MS-LS1-7

8 A cellular process is shown. Which statement best describes the significance of this process?

• The process allows organisms to grow and heal.

• The process produces clones of the parent organism.

• The process copies DNA before cell division

• The process creates genetic variation in the resulting cells

Answer explanation

The process creates genetic variation in the resulting cells

Tags

B.6(G)

What amino acid sequence is encoded in the partial DNA segment?

• Serine – Threonine – Tyrosine

• Serine – Serine – Tyrosine

• Serine – Threonine – Methionine

• Serine – Alanine – Methionine

Answer explanation

The correct amino acid sequence encoded in the partial DNA segment is Serine - Threonine - Tyrosine based on the mRNA codon chart.

Tags

B.6(C)

What is the primary role of the stomata in plant leaves?

• To transport nutrients

• To release oxygen and take in carbon dioxide

• To capture light energy

• To protect the leaf from insects

Answer explanation

Stomata release oxygen and take in carbon dioxide during photosynthesis, a crucial process for plant survival.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram shows light- and dark-colored beetles that live on a tree.

Which result is most likely to occur to the beetle population due to predation over time?

• The number of light-colored beetles in the population will increase.

• There will be more dark-colored beetles than light-colored beetles.

• The number of light-colored beetles will decrease.

• The dark-colored beetles will move to a different type of tree.

Answer explanation

The number of light-colored beetles in the population will increase as they are less likely to be preyed upon due to their color, leading to a higher survival rate.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Nucleic acids are biolomolecuses. Which of the following is the function of nucleic acids?

• Serves as the primary structural unit of biological membranes.

• Serve as energy storage.

• Store and transmits genetic information

• Serve as biological catalysts

Answer explanation

Nucleic acids store and transmit genetic information, making them essential for inheritance and protein synthesis.

Tags

NGSS.MS-LS3-1

Which biomolecule is properly matched to its monomer?

• nucleic acid: amino acid

• polypeptide: 1 glycerol + 3 fatty acids

• lipid: nucleotide

• carbohydrate: monosaccharide

Answer explanation

The correct match is carbohydrate: monosaccharide because monosaccharides are the monomers of carbohydrates.

Melinda had two slides of unknown cells. She recorded her observation of one on the chart.

According to the information in the given chart, what type of cell is cell X?

• bacteria cell

• prokaryotic cell

• plant cell

• animal cell

Answer explanation

Cell X is an animal cell based on Melinda's observation recorded on the chart.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2