Lecture
... Care of Offspring • alternative to internal gestation and development: development of the amniotic egg – egg laying animals – monotremes – birds and reptiles – protection of the developing embryo by a protective layer of calcium and proteins in the form of the shell – eggs of fish and amphibians ar ...
... Care of Offspring • alternative to internal gestation and development: development of the amniotic egg – egg laying animals – monotremes – birds and reptiles – protection of the developing embryo by a protective layer of calcium and proteins in the form of the shell – eggs of fish and amphibians ar ...
2 December, 1998
... It is generally true that since there is less molecular motion at low temperatures, chemical reactions--and therefore metabolism--are slowed way down. In fact, for every 10 degree (C) drop in temperature, metabolic rate generally slows down by a factor of about 2.5. You have probably felt the effect ...
... It is generally true that since there is less molecular motion at low temperatures, chemical reactions--and therefore metabolism--are slowed way down. In fact, for every 10 degree (C) drop in temperature, metabolic rate generally slows down by a factor of about 2.5. You have probably felt the effect ...
4. Collecting duct
... concentrated due to passive flow of H2O out of the tube. As the filtrete moves up the loop of Henle, it becomes more dilute due to passive and active transport of salts out of the tubule. These salts move into the interstitial fluids, and as the tubule passes towards the renal pelvis, water passivel ...
... concentrated due to passive flow of H2O out of the tube. As the filtrete moves up the loop of Henle, it becomes more dilute due to passive and active transport of salts out of the tubule. These salts move into the interstitial fluids, and as the tubule passes towards the renal pelvis, water passivel ...
8.2 Cells and Energy
... A stem cell divides into two daughter cells. Each daughter cell is identical to the original parent cell. When mature, these cells also divide. This is how embryos get a supply of stem cells. A growing embryo needs a lot of stem cells to develop tissues and organs. In the laboratory, starting with a ...
... A stem cell divides into two daughter cells. Each daughter cell is identical to the original parent cell. When mature, these cells also divide. This is how embryos get a supply of stem cells. A growing embryo needs a lot of stem cells to develop tissues and organs. In the laboratory, starting with a ...
The Respiratory System Lecture 1 The Respiratory System The
... columnar epithelium that is composed of three types of cells which are: 1. Basal cells: are small cone shape cells rest on the basement membrane not in contact with the lumen their nuclei are close to the basement membrane, these cells are regarded as the stem cells from which new olfactory cells ca ...
... columnar epithelium that is composed of three types of cells which are: 1. Basal cells: are small cone shape cells rest on the basement membrane not in contact with the lumen their nuclei are close to the basement membrane, these cells are regarded as the stem cells from which new olfactory cells ca ...
Slide 1
... Most of the 75-100 trillion cells that make up the human body are specialized to do certain tasks. The three main factors that influence the differentiation of these cells are: ...
... Most of the 75-100 trillion cells that make up the human body are specialized to do certain tasks. The three main factors that influence the differentiation of these cells are: ...
Respiration
... Water enters the mouth of the fish, passes over the gills, and exits under the operculum. The gill rakers prevent food and other substances from clogging the gills. The gill lamellae provide a large surface area for exchange of gases. • The afferent vessel carries blood toward the gill (afferent an ...
... Water enters the mouth of the fish, passes over the gills, and exits under the operculum. The gill rakers prevent food and other substances from clogging the gills. The gill lamellae provide a large surface area for exchange of gases. • The afferent vessel carries blood toward the gill (afferent an ...
Unit 10 - OpenWetWare
... 4.4 Explain how the nervous system (brain, spinal cord, sensory neurons, motor neurons) mediates communication among different parts of the body and mediates the body’s interactions with the environment. Identify the basic unit of the nervous system, the neuron, and explain generally how it works. 4 ...
... 4.4 Explain how the nervous system (brain, spinal cord, sensory neurons, motor neurons) mediates communication among different parts of the body and mediates the body’s interactions with the environment. Identify the basic unit of the nervous system, the neuron, and explain generally how it works. 4 ...
EGYPTIAN AMERICAN INTERNATIONAL SCHOOL Elementary
... EGYPTIAN AMERICAN INTERNATIONAL SCHOOL Elementary Science Department Semester 1 GRADE 5 Name : Date : Homework sheet 3.4 Match each term in column B with its meaning in column A. Column A ______1. ...
... EGYPTIAN AMERICAN INTERNATIONAL SCHOOL Elementary Science Department Semester 1 GRADE 5 Name : Date : Homework sheet 3.4 Match each term in column B with its meaning in column A. Column A ______1. ...
Biology Term 2 - Pearson-Global
... • How are some specialised plant cells adapted to their function? • Why is cell differentiation important in plants? Guinness World Records has two entries for ‘the world's largest living tree’. El Árbol del Tule has the largest girth (the length around its trunk) and General Sherman has the greates ...
... • How are some specialised plant cells adapted to their function? • Why is cell differentiation important in plants? Guinness World Records has two entries for ‘the world's largest living tree’. El Árbol del Tule has the largest girth (the length around its trunk) and General Sherman has the greates ...
What is Physiology? The Chemical Level Cells Tissues Types of
... • Human body is composed of atoms organized into molecules • Atoms and molecules undergo chemical reactions ...
... • Human body is composed of atoms organized into molecules • Atoms and molecules undergo chemical reactions ...
Blood - Everglades High School
... Why is blood red? • Blood is red because it contains hemoglobin and iron rich pigment. ...
... Why is blood red? • Blood is red because it contains hemoglobin and iron rich pigment. ...
Grade 9 Biology-Term-2
... • How are some specialised plant cells adapted to their function? • Why is cell differentiation important in plants? Guinness World Records has two entries for ‘the world's largest living tree’. El Árbol del Tule has the largest girth (the length around its trunk) and General Sherman has the greates ...
... • How are some specialised plant cells adapted to their function? • Why is cell differentiation important in plants? Guinness World Records has two entries for ‘the world's largest living tree’. El Árbol del Tule has the largest girth (the length around its trunk) and General Sherman has the greates ...
Answers to examination questions in Chapters 1
... 5 Ferns are in the phylum Filicinophyta; a sea star is an echinoderm (phylum not included in the syllabus); an ant is in phylum Arthropoda; a sunflower belongs to the phylum Angiospermophyta; a crab is in phylum Arthropoda; a snail is in the phylum Mollusca. 6 a Antibiotics are used by doctors to ...
... 5 Ferns are in the phylum Filicinophyta; a sea star is an echinoderm (phylum not included in the syllabus); an ant is in phylum Arthropoda; a sunflower belongs to the phylum Angiospermophyta; a crab is in phylum Arthropoda; a snail is in the phylum Mollusca. 6 a Antibiotics are used by doctors to ...
Stratified epithelium contains more than one layer named by shape
... • forms epidermis and nervous system ...
... • forms epidermis and nervous system ...
doc Vocabulary challenge A list of all the definitions from
... A distinct part of an organism that has a particular function, made of many different tissues Control of water content in the body Movement of water from dilute to concentrated solution across a partially permeable membrane Oestrogen and progesterone are produced here Release of an egg (ovum) from a ...
... A distinct part of an organism that has a particular function, made of many different tissues Control of water content in the body Movement of water from dilute to concentrated solution across a partially permeable membrane Oestrogen and progesterone are produced here Release of an egg (ovum) from a ...
Human Body study guide
... These questions/concepts serve as a guide to summarize all of the concepts we learned in Unit 3. Some of the concepts will be more prevalent (seen more) throughout the test compared to others. 1. The human body systems all focus on the concept of maintaining homeostasis. Explain, in your own words, ...
... These questions/concepts serve as a guide to summarize all of the concepts we learned in Unit 3. Some of the concepts will be more prevalent (seen more) throughout the test compared to others. 1. The human body systems all focus on the concept of maintaining homeostasis. Explain, in your own words, ...
2 The Necessities of Life
... ATP adenosine triphosphate, a molecule that acts as the main energy source for cell processes. carbohydrate a class of molecules that includes sugars, starches, and fiber consumer an organism that eats other organisms or organic matter decomposer an organism that gets energy by breaking down the rema ...
... ATP adenosine triphosphate, a molecule that acts as the main energy source for cell processes. carbohydrate a class of molecules that includes sugars, starches, and fiber consumer an organism that eats other organisms or organic matter decomposer an organism that gets energy by breaking down the rema ...
respiratory system
... of cells called a respiratory surface must exist. • This surface must be thin enough to allow gases to diffuse in and out easily. • This surface must be moist to allow gases to be able to dissolve into the liquid to be absorbed. • Respiratory surfaces come in a variety of forms: ...
... of cells called a respiratory surface must exist. • This surface must be thin enough to allow gases to diffuse in and out easily. • This surface must be moist to allow gases to be able to dissolve into the liquid to be absorbed. • Respiratory surfaces come in a variety of forms: ...
Body systemspart 1
... --The study of the human body and how it works is a branch of Biology called ____________. --Anatomy is used by __________, nurses, ____________, and _______________________. --Despite studying the body for centuries, ______________________ about it. --Like a business, your body is divided into sect ...
... --The study of the human body and how it works is a branch of Biology called ____________. --Anatomy is used by __________, nurses, ____________, and _______________________. --Despite studying the body for centuries, ______________________ about it. --Like a business, your body is divided into sect ...
What is an organism?
... = groups of many different populations living in one area. ( all the different types of frogs, fish, turtles and cat tails in Mrs. ...
... = groups of many different populations living in one area. ( all the different types of frogs, fish, turtles and cat tails in Mrs. ...
Multicellular organisms meet their needs in different ways.
... asexually can reproduce more often. Asexual reproduction limits genetic diversity within a group because offspring have the same genetic material as the parent. Check Your Reading ...
... asexually can reproduce more often. Asexual reproduction limits genetic diversity within a group because offspring have the same genetic material as the parent. Check Your Reading ...
Cell theory
In biology, cell theory is a scientific theory which describes the properties of cells. These cells are the basic unit of structure in all organisms and also the basic unit of reproduction. With continual improvements made to microscopes over time, magnification technology advanced enough to discover cells in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology. Over a century later, many debates about cells began amongst scientists. Most of these debates involved the nature of cellular regeneration, and the idea of cells as a fundamental unit of life. Cell theory was eventually formulated in 1838. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchow contributed to the theory. Cell theory has become the foundation of biology and is the most widely accepted explanation of the function of cells.The three tenets to the cell theory are as described below: All living organisms are composed of one or more cells. The cell is the most basic unit of life. All cells arise from pre-existing, living cells, by biogenesis.