Cells And Cell Processes Unit Post-assessment (Grade 8)

14 Questions | By Tagscience | Updated: Mar 17, 2022 | Attempts: 117

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Cells and Cell Processes Unit Post-Assessment (Grade 8)

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1.

Arrange the following levels of organization from least complex to most complex: cells, organelles, tissues, organs, organisms, and organ systems. (Standard 1.2a)
- A.
  
  Organelles, cells, tissues, organs, organ systems, organisms
- B.
  
  Cells, organelles, tissues, organs, organ systems, organisms
- C.
  
  Organelles, cells, organs, organ systems, tissues, organism
- D.
  
  Cells, organelles, organs, organ systems, tissue, organism
- E.
  
  Cells, tissues, organs, organelles, organ systems, organism
2.

Structures found in a plant cell, but not an animal cell, include the following: (Standards 1.2 f, 5.1b)
- A.
  
  Centrioles, mitochondria, and a nucleus
- B.
  
  Chloroplasts, a cell wall, and a large vacuole
- C.
  
  Chloroplasts, a cell wall, and mitochondria
- D.
  
  Chloroplasts, centrioles, and Golgi apparatus
- E.
  
  Centrioles, a cell membrane, and a nucleus
3.

The body cells of most multicellular animals are not in direct contact with the external environment. These cells are supplied with materials from the environment by: (Standard 1.2e)
- A.
  
  A central nervous system
- B.
  
  Hydrolytic enzymes
- C.
  
  Sense receptors
- D.
  
  A circulatory system
- E.
  
  Symbiotic bacteria
4.

The cell structure responsible for controlling which molecules enter and leave the cell and for the recognition of chemical signals is the: (Standard 1.2g)
- A.
  
  Cell wall
- B.
  
  Nuclear membrane
- C.
  
  Mitochondria
- D.
  
  Chloroplast
- E.
  
  Plasma membrane
5.

Which statement best describes the function of a cell? (Standard 1.2h)
- A.
  
  Large organic food molecules like protein are broken down only after they enter the cell. Once broken down, the cell will excrete the broken down substances.
- B.
  
  The cell makes its own protein and does not need nutrients from the outside environments.
- C.
  
  The function of the cell is to convert proteins to amino acids.
- D.
  
  Large organic food molecules like protein must be initially broken down. Once the broken down nutrient enters the cell, the cell will use the building blocks to synthesize organic compounds necessary for life.
- E.
  
  Large organic food molecules like protein directly enter the cell where they are used for energy.
6.

The organelle most directly involved in the synthesis of ATP is the (Standard 1.2 i):
- A.
  
  Ribosome
- B.
  
  Mitochondrion
- C.
  
  Nucleus
- D.
  
  Centriole
- E.
  
  Golgi apparatus
7.

Which substances are secreted at the endings of nerve cells? (Standard 1.2j)
- A.
  
  Antibodies
- B.
  
  Cell Receptors
- C.
  
  Neurotransmitters
- D.
  
  Amino Acids
- E.
  
  Neurons
8.

What structure in the paramecium below has a similar function to the muscles and bones of humans? (Standard 1.3a)
- A.
  
  Gullet
- B.
  
  Food Vacuole
- C.
  
  Macronucleus
- D.
  
  Cilia
- E.
  
  Micronucleus
9.

Which statement best describes ATP (Standard 5.1 e)?
- A.
  
  When ADP is converted to ATP, energy is released during bonds that form.
- B.
  
  When ATP is converted to ADP and Phosphate, energy is released from the bond that break.
- C.
  
  ATP is a reactant of photosynthesis.
- D.
  
  ATP is a reactant of cellular respiration.
- E.
  
  ATP is a product in the hydrolysis of ADP.
10.

The movement of water from an area of higher concentration to an area of lower concentration is known as (Standard 1.2g):
- A.
  
  Diffusion
- B.
  
  Osmosis
- C.
  
  Active Transport
- D.
  
  Hydrolysis
- E.
  
  Phagocytosis
11.

The diagram below represents some events that take place in a plant cell. The letters X, Y, and Z most likely represent (Standards 5.1a, 5.1b):
- A.
  
  Oxygen, Carbon Dioxide, and Nitrogen
- B.
  
  Glucose, Light, and Carbon Dioxide
- C.
  
  Nitrogen, Oxygen, and Water
- D.
  
  Light, Oxygen, and Methane
- E.
  
  Carbon Dioxide, Light, and Water
12.

Hydrogen peroxide (H2O2) is a toxic by-product of cellular metabolism in aerobic organisms. The reaction below occurs within the cells to prevent the accumulation of hydrogen peroxide. In this reaction, catalase functions as an:
- A.
  
  Enzyme in the breakdown of hydrogen peroxide
- B.
  
  Enzyme in the synthesis of hydrogen peroxide
- C.
  
  Enzyme in the synthesis of hydrogen peroxide Emulsifier in the digestion of hydrogen peroxide
- D.
  
  Indicator in the detection of hydrogen peroxide
- E.
  
  Inhibitor preventing the digestion of hydrogen peroxide
13.

Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how much do you already know about cells and cell processes?
14.

Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how interested are you in cells and cell processes?