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Eleventh Grade (Grade 11) Biology Questions

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Grade 11 Biogeochemical Cycles
A cycle that continuously moves atoms, ions, and molecules from nonliving factors to living organisms is a                         .
  1. photogeochemical cycle
  2. chemogeobiological cycle
  3. biogeochemical cycle
  4. geobiochemical cycle
Grade 11 Cell Structure and Function
Which is a function of the plasma membrane?
  1. breaks down lipids, carbohydrates, and proteins from foods
  2. stores water, salt, proteins, and carbohydrates
  3. keeps the cell wall in place
  4. regulates which materials enter and leave the cell
Grade 11 Biochemical Pathways
Which molecule serves as the main food source for most known cells?
  1. sucrose
  2. cellulose
  3. PGAL
  4. glucose
Grade 11 Nervous and Endocrine Systems
Anything that causes a response from an organism is a(n)
  1. response.
  2. stimulus.
  3. irritablilty.
  4. technique.
Grade 11 Macromolecules
Which is a general term attributed to a large and complex molecule?
  1. nucleic acid
  2. macromolecule
  3. polymer
  4. phosphate
Grade 11 Communities, Populations, and Ecosystems
Which scenario best illustrates the concept of carrying capacity?
  1. The exponential growth of a fruit fly population continues to increase and will eventually double in ten days.
  2. The exponential growth of ants increases dramatically when its competitor species is forced to move due to habitat loss.
  3. The logistic growth of a giraffe population continues to decline due to the increase in number of predators.
  4. The logistic growth of a bunny population has stabilized because the population has reached the largest numbers that the area can support.
Grade 11 Human Reproduction
What is the female cell of reproduction?
  1. ovary
  2. egg
Grade 11 DNA, RNA, and Genetics
The genetic makeup of an organism is its                .
  1. genotype
  2. traits
  3. phenotype
  4. homozygous
Grade 11 Anatomical Organization
In multicellular organisms, groupings of similar cells are                .
  1. tissues
  2. organs
  3. systems
  4. organisms
Grade 11 DNA, RNA, and Genetics
Mutations are a source of
  1. genetic equilibrium.
  2. disruptive selection.
  3. speciation.
  4. genetic variation.
Grade 11 Cell Structure and Function

This question is a part of a group with common instructions. View group »

One feature distinguishing plant cells from animal cells is the presence of
  1. a plasma membrane.
  2. a cell wall.
  3. cytosol.
  4. mitochondria.
Grade 11 Respiration, Digestion, and Excretion
The rhythmic contraction of the digestive system is                       .
  1. excretion
  2. maintaining boundaries
  3. metabolism
  4. peristalsis
  5. responsiveness
Grade 11 Conservation and Biodiversity
What term refers to the number and variety of species that live in an area?
  1. ecosystem
  2. environment
  3. resources
  4. biodiversity
Grade 11 Cell Structure and Function
What is the first stage of mitosis?
  1. anaphase
  2. metaphase
  3. prophase
  4. telophase
Grade 11 Biogeochemical Cycles
What is the role of nitrogen-fixing bacteria in the nitrogen cycle?
  1. They create acid rain.
  2. They cause algal blooms.
  3. They make nitrogen into a more useful form.
  4. They move water through the environment.
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