
Sally's teacher asked her to classify a microscopic organism found in pond water. The FIRST characteristic Sally used to figure what kingdom the organism belonged to was
A) cell type.
B) cell diameter.
C) number of ribosomes present.
D) chemical composition of cell wall.
A) cell type.

All fungi are
A) eukaryotes and autotrophic.
B) prokaryotes and autotrophic.
C) eukaryotes and heterotrophic.
D) prokaryotes and heterotrophic.
C) eukaryotes and heterotrophic.

This ecosystem has very few plants and a limited number of animal species. What two non-living factors limit the plants and animals that live here?
A) sandy soil and lots of rainfall
B) little sunlight and little water
C) low temperature and little rainfall
D) high temperature and little rainfall
D) high temperature and little rainfall
An organ, in any multicellular organism, would BEST be described as
A) several types of cells working together for a common purpose.
B) a group of the same kind of cells with a common structure and function.
C) a structure containing a single cell that is part of a large system.
D) a structure made of two or more tissues functioning together for a common purpose.
D) a structure made of two or more tissues functioning together for a common purpose.

The central vacuole in a plant cell is responsible for turgor pressure. When the vacuole loses water, the cytoplasm shrinks. When the vacuole gains water, the cytoplasm seems to swell up. One structure helps the plant cell keep its shape no matter how much force water is creating in the vacuole. This is the-
A) cell wall.
B) cytoplasm.
C) cytoskeleton.
D) cell membrane.
A) cell wall.

Out of the organisms listed, which are most closely related based on the characteristics listed.
A) Balantidium coliis and Stentor igneus because they are both multicellular.
B) Monodon monoceros and Canis familiaris because they are both mammals.
C) Ophiophagus hannah and Pinus Ponderosa because they both live on land.
D) Stentor sp. and Monodon monoceros because they are both found in the water.
B) Monodon monoceros and Canis familiaris because they are both mammals.

All of the above are members of the Kingdom Animalia. Why?
A) they are all producers
B) they all can detect light
C) they all perform photosynthesis
D) they all must eat in order to get nutrition
D) they all must eat in order to get nutrition
The acacia tree provides a number of benefits to the Pseudomyrmex ants that llive on or near the trees. The trees provide shelter, protein, and nectar. The ants provides several forms of protection. They attack and remove herbivorous insects. They also remove vines that might overgrow the acacia and kill the growing shoots of nearby plants that might become competitors.
The relationship between these ants and the acacia trees may best be described as
A) competitive.
B) mutualistic.
C) predatory.
D) symbiotic.
B) mutualistic.
In sexually reproducing animals, once fertilization of the egg takes place, the ___________ exists as a single cell until cell division begins.
A) egg
B) larva
C) sperm
D) zygote
D) zygote

Describe the movement of molecules in the illustration.
A) Molecules are moving from a lower concentration to a higher concentration.
B) Molecules are moving from a higher concentration to a lower concentration.
C) Molecules are moving from a higher concentration to a lower concentration and then from a lower to higher concentration.
D) Molecules are moving from a lower concentration to a higher concentration and then from a higher concentration to a lower concentration.
B) Molecules are moving from a higher concentration to a lower concentration.

We make observations with our five senses to help us identify things. Can you identify this living thing, using the key and the properties described there? The living things is a
A) beetle.
B) fly.
C) lobster.
D) spider.
B) fly.
Vertebrates that are cold blooded, breathe with gills, and spend their entire life in the water would be classified as
A) amphibian
B) bird
C) fish
D) reptile
C) fish
An example of mutualism would be
A) a tick living on a deer.
B) a leech living on a person.
C) two dogs competing for food.
D) bacteria living in human intestines.
D) bacteria living in human intestines.

Your skin is the largest organ of your body. The skin and its appendages, hair and nails, are known as the integumentary system. All BUT one of these are functions of your skin.
A) aids in the production of vitamin D
B) helps regulate your body temperature
C) first line of protection against invaders
D) semipermeable membrane to substances like glucose
D) semipermeable membrane to substances like glucose
A simplified model of a plant cell is shown here. The cell, as it is shown here, would be unable to perform which cellular process due to a missing organelle?
A) The cell would not be able to replicate its DNA without the nucleus, which is missing.
B) The cell would not be able to regulate water storage without the vacuole, which is missing.
C) The cell would not be able to perform photosynthesis without the chloroplast, which is missing.
D) The cell would not be able to perform cellular respiration without the mitochondria, which are missing.
C) The cell would not be able to perform photosynthesis without the chloroplast, which is missing.
Which animals are cold-blooded, breathe with lungs, most lay eggs, although in some the eggs hatch inside the female, and have scales or plates?
A) fish
B) reptiles
C) mammals
D) amphibians
B) reptiles

Stentor is classified in the kingdom Protista. What features, both internal and external, should be considered, when classifying this organism?
A) unicellular, microscopic organisms
B) presence of cells but lacking cellular organelles
C) presence of cells and unicellular or multicellular
D) presence of cells as well as chloroplasts containing chlorophyll
C) presence of cells and unicellular or multicellular

Imagine this! A female wasp stings the orbweaver spider, paralyzing the spider so the wasp can lay an egg on the spider. The spider resumes its normal activities, but now it is carrying the wasp egg. When the wasp larva hatches, it begins to suck fluids from the spider's body. Still the spider continues its normal activities. When the larva is ready to form its cocoon, the larva injects the spider with a chemical that causes the spider to build a modified web that is able to support the weight of the wasp cocoon. The normal web would not be able to do this. The wasp larva kills the spider and drains it of any remaining nutrients and forms its cocoon. The wasp then emerges from the cocoon and continues its life cycle. What kind of relationship exists between the wasp and the orbweaver spider?
A) consumer-decomposer
B) parasite-host
C) predator-prey
D) producer-consumer
B) parasite-host

The chart shows parts of the body at different levels of organization. Which picture can BEST be used to fill in box S?
A) ![]()
B)![]()
C) ![]()
D) ![]()
C) ![]()

Some molecules are too big to pass through the phospholipid bilayer of the cell membrane. These molecules need to pass through ________________ that are embedded in the cell membrane.
A) proteins
B) ribosome
C) cell wall
D) carbohydrates
A) proteins
Although animals share many common characteristics, there is also a great amount of diversity found in animals. Which animals are ectothermic, obtain dissolved oxygen in water through gills, have scales, have fins, and live in water?
A) fish
B) reptiles
C) mammals
D) amphibians
A) fish
Trey is looking at a cell under the microscope. It is attached to many other cells, and it has a nucleus and membrane bound organelles. It has no cell wall. In which kingdom should this organism be classified?
A) Animalia
B) Archaebacteria
C) Fungi Eliminate
D) Plantae
A) Animalia
No matter where you live, you can get a parasite. Whether or not you become infected with parasites depends on where you spend your time, what kind of work you do, what kinds of food you eat and how you prepare your food. Parasites live all over the world but they cannot live alone. Parasites must have a host. A host is another living thing that the parasite either lives inside of or on. For example, ticks live on hosts such as deer, rabbits and dogs. Parasitic worms live inside hosts such as fish, birds and mammals. As long as there are animals and plants in an environment to act as hosts, there will also be parasites. This is a diagram of the life cycle of a tapeworm. It is an endoparasite. That means it lives inside of its host.
Follow the life cycle of the tapeworm. Identify the host(s).
A) cow
B) grass
C) cow and grass
D) cow and human
D) cow and human

Which answer choice CORRECTLY describes each picture of the levels of organization of this green plant?
A) P: tissue, Q: organ, R: organ system, S: cell
B) P: organ system, Q: cell, R: organ, S: tissue
C) P: organ, Q: tissue, R: organ system, S: cell
D) P: cell, Q: organ, R: organ system, S: tissue
A) P: tissue, Q: organ, R: organ system, S: cell
The kidney filters blood to remove wastes, which are sent to the bladder to be eliminated from the body. A similar process happens on a smaller scale on a cellular level. Which organelles work together to perform similar functions to the kidney and bladder.
A) the cytoplasm and the vacuole
B) the lysosomes and the cell membrane
C) the mitochondria and the chloroplast
D) the nucleus and the endoplasmic reticulum
B) the lysosomes and the cell membrane