Cell Theory
Immunity
Scientific Method
General
Reproduction
100
Single-celled organisms are able to maintain internal stability because they

(1) have multiple organ systems

(2) work with other cells

(3) contain structures that perform life functions

(4) carry out photosynthesis to produce food

(3) contain structures that perform life functions
100
The immune system may respond to chemicals on the surface of an invading organism by

(1) releasing hormones that break down these chemicals

(2) synthesizing antibodies that mark these organisms to be destroyed

(3) secreting antibiotics that attach to these organisms

(4) altering DNA sequences in these organisms

(2) synthesizing antibodies that mark these organisms to be destroyed
100
Identify the dependent and independent variable:

If I drink a can of Mountain Dew directly before going to bed, then I will get less sleep.

Dependent: sleep

Independent: Mountain Dew

100
Which activity can occur without the use of energy?

(1) contraction of muscle tissue

(2) protein synthesis in a cell

(3) active transport of minerals

(4) movement of water across a membrane

4: diffusion from a high to low concentration doesn't require energy

Bonus Follow-up: What do we call the diffusion of water?

100
All the information necessary for growth, development, and eventual reproduction of sexually reproducing organisms is present in

(1) sperm cells, only

(2) egg cells, only

(3) zygotes

(4) either sperm cells or egg cells

(4) either sperm cells or egg cells
200
Cell membranes are said to be selectively permeable. Which statement best explains what selectively permeable means?

(1) The cell membrane prevents any harmful substance from entering the cell.

(2) The cell membrane lets certain substances enter the cell and keeps certain substances out of the cell.

(3) The cell membrane allows only large molecules to diffuse into the cell.

(4) The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out.

(2) The cell membrane lets certain substances enter the cell and keeps certain substances out of the cell.
200
Vaccinations help the body prepare to fight invasions of a specific pathogen by

(1) inhibiting antigen production

(2) stimulating antibody production

(3) inhibiting white blood cell production

(4) stimulating red blood cell production

(2) stimulating antibody production
200

Make a hypothesis for the observation:

Observation: The Art room has been stocking a lot of clay lately.

varies
200
A similarity between humans and many other multicellular animals is that they

(1) occupy the same niche in most food webs

(2) are composed of organ systems

(3) have the same DNA sequences

(4) carry out autotrophic nutrition

(2) are composed of organ systems
200
What are the proper names of the gametes found in adult humans?
spermatozoa and ova
300
The diagram below represents an incomplete sequence of levels of organization.

organelles → tissues → organs → organ systems → organism

This sequence can be completed correctly by inserting

(1) “cells →” between organelles and tissues

(2) “proteins →” between tissues and organs

(3) “populations →” between organs and organ systems

(4) “molecules →” between organ systems and organisms

(1) “cells →” between organelles and tissues
300
The list below includes three organ systems that are directly used when a human runs.

circulatory system

muscular system

skeletal system

Which system should also be included in the list?

(1) immune system

(2) reproductive system

(3) digestive system

(4) nervous system

(4) nervous system
300
Define the difference between an Independent and Dependent variable.
Dependent: the effect; changes due to the independent variable

Independent: the cause of the change; what the researcher sets.

300
As a result of human activity, a significant percentage of the coral reefs in the oceans have been damaged. One-third of marine fish species depend on coral reefs for survival. Many of these fish might die. The most direct cause of the death of these fish would be

(1) habitat destruction

(2) direct harvesting

(3) recycling of nutrients

(4) use of nuclear fuels

(1) habitat destruction
300
Explain why the brain stops producing FSH during a human female's menstrual cycle.
The estrogen produced by the ovaries has reached a level that is detectable by the brain, signaling it to stop secreting FSH.
400
Certain antibacterial soaps kill 99% of the bacteria present on hands. Constant use of these soaps could be harmful over time because

(1) more pathogens may be resistant to the soap

(2) microbes prevent viral diseases

(3) large populations of pathogens are beneficial to the hands

(4) the soap stimulates skin cell division

(1) more pathogens may be resistant to the soap
400
A new vaccine was developed and then tested on a large sample of individuals. This new vaccine will be considered effective if it helps prepare the body to fight future invasion by

(1) inhibiting the response of red blood cells

(2) stimulating the reproduction of microbes

(3) inhibiting the action of immune cells

(4) stimulating the production of antibodies

(4) stimulating the production of antibodies
400
Name 3 constants for the following experiment:

Darla wants to see if adding earthworms to soil will help plants grow faster.

varies

Bonus Follow-Up: What are the Independent and Dependent Variables?

400
A Native American saying states that, “We do not inherit the land we live on from our grandparents, we borrow it from our grandchildren.”

This saying is an attempt to make us understand that

(1) the impact we have on the environment lasts for many generations

(2) we must pay a lot of money to buy land from our parents

(3) what we do today to the environment has little impact on our children

(4) human actions only affect other humans

(1) the impact we have on the environment lasts for many generations
400
Fertilization of a viable zygote occurs in the

(1) ovary

(2) zygomatic arch

(3) fallopian tube

(4) uterus

(3) fallopian tube
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