LE Test Review- Unit 3 Cells

tissues

Which term best indicates the structures represented by the circle labeled X?

plants — carry out respiration and autotrophic nutrition

Which organisms and set of characteristics are correctly paired?

mitosis of body cells

Which process allows a mammal to continue to grow in size?

More water will move into the cell than will leave the cell. Starch will remain inside the potato cell.

Which row in the chart below correctly describes what would be expected to occur in the potato cells, with regard to both the starch and water molecules?

solution B, only

Which solution would be most similar in concentration to the normal internal environment of the human circulatory system?

mitochondrion

In which cell structure is energy extracted from nutrients?

synthesizes more sugar

A cell in the leaf of a corn plant contains more chloroplasts than a cell in the stem of a corn plant. Based on this observation, it can be inferred that, when compared to the cell in the stem, the cell in the leaf

begins the breakdown of glucose

Based on the diagram, the process of glycolysis most likely

contain the same genetic material

Cells from structure E and cells from structure G are similar in that they

mitotic cell division

Genetic researchers have discovered a number of different gene mutations that have led to the development of cancer. These mutations affect how frequently a cell reproduces. Which process would be directly influenced by these mutations?

cannot make enough ATP

It may be harmful when people compete to see who can hold their breath the longest under water. Without oxygen, brain cells

remove carbon dioxide from the atmosphere during photosynthesis

More than 100 years ago, Earth's atmosphere contained about 280 parts per million (ppm) of carbon dioxide. It is predicted that by the year 2050, the level of carbon dioxide in the atmosphere could reach 700 ppm, greatly increasing Earth's temperature. It has been suggested that growing more green plants would help to slow this increase. The best explanation for why increased numbers of plants would help is that plants

cell membrane

Some viruses attack cells by attaching to their outer covering, entering, and taking over their genetic "machinery." Viruses are able to invade cells after first attaching to their

active transport

The arrow indicates that the cell membrane is carrying out the process of

the same number of genes and the same traits

The diagram below represents a form of cellular reproduction. As a result of this process, offspring 1 and offspring 2 will have

ATP

The diagram below represents a series of events that occur in living cells. Which molecule is indicated by letter X?

move molecules into or out of cells of the body

The processes of diffusion and active transport are both used to

guard cells

What structures regulate water loss and gas exchange in the leaves of plants?

respiration

Which life process carried out by a green plant is represented in the diagram below?

Structure 3 is a mitochondrion, where respiration takes place.

Which one of the following statements concerning the structures within this cell is accurate?