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Terms in this set (40)
Which structures are involved in cell movement?
microtubules and microfilaments
Unlike the cell membrane, the cell wall is
a rigid structure.
Which of the following enclose their DNA in a nucleus?
Which of the following is NOT a principle of the cell theory?
very few cells are able to reproduce.
What advance in technology made the discovery of cells possible?
The diffusion of water across a selectively permeable membrane is called
Which of these is NOT true of cells?
they are much like empty rooms.
The cells of unicellular organisms are
able to carry out all of the functions necessary for life.
Which organelle breaks down organelles that are no longer useful?
You will NOT find a cell wall in which of these kinds of organisms?
Which of the following conclusions could you draw about the cell shown in Figure 7-1?
The cell is eukaryotic because it has a nucleus.
Which organelles are involved in energy conversion?
mitochondria and chloroplasts
Which means of particle transport is shown in Figure 7-4 above?
Electron microscopes can reveal details
1000 times smaller than those visible in light microscopes.
Which means of particle transport is shown in Figure 7-5 above?
Diffusion occurs because
molecules constantly move and collide with each other
Which term describes the relatively constant internal physical conditions of an organism?
The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of?
Which of the following structures serves as the cell's boundary from its environment?
Which of the following is a function of the cytoskeleton?
helps a cell keep its shape
A group of similar cells that perform a particular function is called
Which of the following is a function of the cell membrane?
regulates the movement of materials into and out of the cell
Which organelle would you expect to find in plant cells but not animal cells?
Which structure makes proteins using coded instructions that come from the nucleus?
Which structure in the cell shown in Figure 7-3 above modifies, sorts, and packages proteins and other materials for storage or release from the cell?
The primary function of the cell wall is to
support and protect the cell.
Which of the following is a function of the nucleus?
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
water to move into the cell.
Which of the following organisms are prokaryotes?
Looking at a cell under a microscope, you note that it is a prokaryote. How do you know?
The cell lacks a nucleus.
Not all cells are alike. Which of the following is NOT a true statement about differences between cells?
Most cells have a membrane, but some do not.
Which means of particle transport requires input of energy from the cell?
Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use?
Which of the following best describes the relationship between the nucleus and the cytoplasm?
The nucleus is an organelle that is surrounded by the cytoplasm.
During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will
continue to move across the membrane in both directions
Which of the following statements about the nucleus is NOT true?
The nucleus is the site of protein assembly.
Which sequence correctly traces the path of a protein in the cell?
ribosome, endoplasmic reticulum, Golgi apparatus
Which of the following activities is NOT a way that unicellular organisms maintain homeostasis?
Which structure in the cell shown in Figure 7-2 above stores materials, such as water, salts, proteins, and carbohydrates?
Which list represents the levels of organization in a multicellular organism from the simplest level to the most complex level?
cell, tissue, organ, organ system
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