EOC Review

Which statement best describes how a virus replicates?

• A virus divides into two particles before infectin

• A virus enters a host cell and uses the materials from the host cell to replicate

• Multiple virus particles fuse together

• Multiple virus break down and then reassemble into new copies

This response of the shoot system benefits the plant by allowing the plant to —

• produce more pollen for pollinators

• take in more carbon dioxide to convert into glucose

• absorb more water to transport to the leaves

• reach more sunlight for photosynthesis

When a stem cell divides, it produces two daughter cells. One daughter cell will remain a stem cell, while the other daughter cell will differentiate into a specialized cell. Which factor will most directly determine what type of specialized cell will be produced?

• The size of the cell

• The length of the cell cycle

• The number of chromosomes that are replicated

• The genes that are expressed

Which type of movement across a cell’s plasma membrane requires energy supplied by ATP?

• Passive transport

• Simple diffusion

• Active transport

• Osmosis

Leaf-cutter ants harvest leaves and carry them to fungi that convert plant material into a usable form for the ants to digest. The fungi depend on the leaves for nutrients. The ants also produce an antibiotic on their bodies that helps protect the fungi from harmful bacteria. Which of these explains the relationship between the leaf-cutter ants and the fungi?

• Predation, because the ants feed on the fungi

• Mutualism, because both the ants and the fungi benefit from each other

• Competition, because both organisms consume the same resource for energy

• Commensalism, because the ants receive energy from the fungi and the fungi are unaffected

The table shows the classification of four mammals found in Texas. Based on this table, which explanation best describes why elk and fallow deer are classified in the same genus?

• They are both in family Cervidae and share a more recent common ancestor.

• They mate and produce fertile offspring.

• They live in similar habitats.

• They are both in kingdom Animalia and have similar diets.

Why is it important to assign each organism a scientific name?

• Each scientific name applies to only one species, making it universally identifiable to scientists.

• Each scientific name allows scientists to better study the behavior of an organism

• The scientific name allows scientists to develop common names for organisms.

• The scientific name describes how an individual looks relative to others of the same genus.

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

• 
• 
• 

What components make up the backbone of a DNA molecule?

• Purines and deoxyribose

• Pyrimidines and purines

• Deoxyribose and phosphate groups

• Phosphate groups and pyrimidines

Which characteristic best distinguishes cells as either prokaryotic or eukaryotic?

• The organization of the genetic material

• The location of the cytoplasm

• The role of the cell membrane

• The function of the flagella