Exam (elaborations)
Bio 251 Exam 1 Questions and Correct Answers
- Course
- Institution
Bio 251 Exam 1 Questions and Correct Answers
[Show more]
Seller
Follow
Content preview
Bio 251 Exam 1list the organizational levels of biology starting with the most basic - Answer-chemical, cellular, tissue,
organ, organ system, organismal
integumentary system - Answer-Forms the body's external covering; protects deeper tissue from injury;
helps regulate body temperature
skeletal system - Answer-Protects and supports body organs and provides a framework the muscles use
to support the movement. Made up of bones and joints
Muscular System - Answer-Allows manipulation of the environment, locomotion, and facial expression.
Maintains posture, and produces heat.
nervous system - Answer-the body's speedy, electrochemical communication network, consisting of all
the nerve cells of the peripheral and central nervous systems
endocrine system - Answer-Glands secrete hormones that regulate processes such as growth,
reproduction, and nutrient use (metabolism) by body cells.
, lymphatic system - Answer-Composed of a network of vessels, ducts, nodes, and organs. Provides
defense against infection.
respiratory system - Answer-Brings oxygen into the body. Gets rid of carbon dioxide.
digestive system - Answer-Breaks down food into absorbable units that enter the blood for distribution
to body cells.
urinary system - Answer-Eliminates nitrogenous wastes from the body. Regulates water, electrolyte and
acid-base balance of the blood.
reproductive system - Answer-Reproduce offspring- produce male sex cells (sperm) and female sex cells
(oocytes)
cardiovascular system - Answer-Blood vessels transport blood, which carries oxygen, carbon dioxide,
nutrients, wastes, etc. The heart pumps blood.
Define homeostasis - Answer-maintenance of a stable internal environment
Define negative feedback - Answer-Feedback in which the response is the opposite of the stimulus.
example of negative feedback - Answer-body temperature regulation
Define positive feedback - Answer-Feedback in which the response is the same as the stimulus.
example of positive feedback - Answer-childbirth
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Rosetopgrader. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now