Symbiosis, Levels, Human Body, Enzymes, Did you get it 1

Gobies are a type of small fish that live in small burrows.  Sometimes these burrows are created and maintained by burrowing shrimp.  The goby shares the burrow with the shrimp and uses it to protect its eggs.  The shrimp has poor eyesight, but monitors the behavior of the goby with its antennae.  When it feels the shrimp retreat into the burrow away from danger it quickly follows.  This relationship demonstrates which of the following?

• parasitism
• mutualism
• commensalism
• predation

A native species and a non-native species are competing for resources within the same ecosystem. The non-native species is more likely to survive than the native species in which of the following situations?

• Both the native species and the non-native species thrive on the same food source.
• The native species is immune to certain pathogens in the ecosystem.
• Predators prey on both native and non-native species.
• The non-native species has no natural enemies in the ecosystem.

The human body is composed of organ systems. Which list represents a system organized from least to most complex?

• Heart, cardiac muscle, muscle tissue, muscle cell

• Lung tissue, trachea, nostrils, circulatory system

• Muscle cell, muscle tissue, biceps muscle, muscular system

• Integumentary system, skin cell, hair, sweat glands

Recent studies in bone research indicate that using ultrasound on a broken bone can decrease the healing time by 25%. Which of these are the most basic levels of organization involved when a bone heals?

• Cells and tissue

• Cells and organ system

• Organ system and organism

• Tissue and organ system

Which two body systems work together to break down food into energy and rid the body of the waste produced during this process?

• Skeletal and endocrine
• Digestive and excretory
• Nervous and immune
• Muscular and skeletal

Which body systems work together to supply the body's cells with oxygen?

• Respiratory and immune
• Nervous and reproductive
• Circulatory and respiratory
• Endocrine and muscular

What is the primary role of enzymes inside of living cells? 

• organizing the translation of proteins
• allowing cells to be motile
• absorbing ultraviolet rays
• speeding up chemical reactions 

Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?
 

• Enzymes are specific to a substrate.
• Enzymes can operate in a wide range of conditions.
• Enzymes are activated by neighboring molecules.
•  Enzymes can be found in all life-forms.