Unit 3.30 Biology

Which of the following shows the correct order for the levels of organization of living things?

• Tissue, organism, population, biosphere, biome

• Tissue, organisms, community, biome, biosphere

• Tissue, cell, community, population, biome

• Tissue, organ system, population, biosphere, ecosystem

The term ​ (a)   refers to animals whose body temperature varies with the environment, and ​ (b)   refers to animals who keep the same internal temperature in their bodies.

• Ectotherm
• endotherm
• mesotherm

To help animals maintain ​ (a)   (balance in the body), two feedback loops are used. A ​ (b)   feedback loop works by triggering a counteracting response in the body to come back to a set point; a ​ (c)   feedback loop works by intensifying the response.

• homeostasis
• regulation
• cellular respiration
• negative
• positive
• neutral

Which of the following are functions of the skeletal system? Select all that apply.

• Protect organs.

• Produce digestive enzymes.

• Stores calcium

• Produces bone marrow

Which is the largest organ system in the human body?

• Skeletal

• Muscular

• Immune

• Integumentary

What are the 3 types of muscles? Select all that apply.

• Cardiac

• Skeletal

• Smooth

• Rough

Match each term with the statements that pertain to it.

• Population

• many different populations in one area (only living things)
• Biome

• anywhere on the planet where life is supported.

• Biosphere

• all the different populations plus the abiotic factors in a community
• Ecosystem

• many different ecosystems located in one geographical area

• Community

• many of the same organisms in one area

Match each joint type with its description regarding movement.

• Fibrous joints

• Allows little movement

• Cartilaginous joints

• Allows for a large amount of movement.

• Synovial joints

• Allows limited movement

Match each part of the integumentary system with its description.

• Dermis

• Sensory cells in the skin, especially in the fingertips, that provide sensations.

• Merkel Cells

• Contains oil that lubricates the hair

• Epidermis

• Outermost layer of the skin

• Sebaceous gland

• Contains blood vessels, hair, nerves, and sweat glands

There are 3 types of muscle contractions. The first one is ​ (a)   where you shorten one muscle and another one relaxes to do the job. The second one is ​ (b)   , the opposite of the first, and is where one muscle is elongated, and another shortened to do the job. The third, ​ (c)   , does not require shortening or lengthening of the muscles, but instead keeps the muscle rigid.

• lifting
• lowering
• Stabilizing