Morphology of the air‐breathing stomach of the catfish Hypostomus
... and waters which dry up seasonally are habitats characterized by low oxygen levels. In tropical waters there are no vertical currents, which are vital for the transport of dissolved oxygen to lower depths. In hypoxic (oxygen deficient) environments, gills are not sufficient for gaseous exchange and se ...
... and waters which dry up seasonally are habitats characterized by low oxygen levels. In tropical waters there are no vertical currents, which are vital for the transport of dissolved oxygen to lower depths. In hypoxic (oxygen deficient) environments, gills are not sufficient for gaseous exchange and se ...
tissues
... body depends for movement. Some movement may be so small that it can only be seen by the aid of a microscope. This movement is possible by the muscle cells ability to contract. ...
... body depends for movement. Some movement may be so small that it can only be seen by the aid of a microscope. This movement is possible by the muscle cells ability to contract. ...
Biology: Concepts and Connections, 6e (Campbell)
... 6) Tuna, sharks, and penguins have adapted to their environment by becoming fast swimmers. They are fast swimmers due to A) the oily secretion on their skins. B) their streamlined, tapered bodies. C) their oversized fins and flippers. D) their exceptional capacity for energy storage. E) the Frisbee- ...
... 6) Tuna, sharks, and penguins have adapted to their environment by becoming fast swimmers. They are fast swimmers due to A) the oily secretion on their skins. B) their streamlined, tapered bodies. C) their oversized fins and flippers. D) their exceptional capacity for energy storage. E) the Frisbee- ...
S 7.1 All living organisms are com- posed of cells, from just one to
... Schleiden concluded that all plants are made of cells. He based this conclusion on his own research and on the research of others before him. The next year, Theodor Schwann concluded that all animals are also made up of cells. Thus, stated Schwann, all living things are made up of cells. Schleiden a ...
... Schleiden concluded that all plants are made of cells. He based this conclusion on his own research and on the research of others before him. The next year, Theodor Schwann concluded that all animals are also made up of cells. Thus, stated Schwann, all living things are made up of cells. Schleiden a ...
Staying alive Department of Science
... 1. All known living things are made up of cells. 2. All cells come from pre-existing cells by division. (Spontaneous Generation does not occur). 3. The cell is the structural & functional unit of all living things. ...
... 1. All known living things are made up of cells. 2. All cells come from pre-existing cells by division. (Spontaneous Generation does not occur). 3. The cell is the structural & functional unit of all living things. ...
Embryo final study tips
... 7. Where is the primitive streak? What does it do? When does it form? The first thing to appear during gastrulation is the primitive streak. It forms at the caudal end of epiblast ( ~day 16 – beginning of the 3rd week) and is a thickened linear band of epiblast. It results from the proliferation and ...
... 7. Where is the primitive streak? What does it do? When does it form? The first thing to appear during gastrulation is the primitive streak. It forms at the caudal end of epiblast ( ~day 16 – beginning of the 3rd week) and is a thickened linear band of epiblast. It results from the proliferation and ...
Primary (central) lymphoid organs Thymus
... thymus by Jacques Miller • 1974 - John Caffey: – „most mistakes I’ve seen were not because one didn’t know some disease, but because he didn’t know he was looking at normal.“ ...
... thymus by Jacques Miller • 1974 - John Caffey: – „most mistakes I’ve seen were not because one didn’t know some disease, but because he didn’t know he was looking at normal.“ ...
Organs from the endoderm
... eircular blastopore is reduced to an elongated slit-like opening; but there seems to be some variation in the details of the method of its later reduction. The medullary folds arch over only the anterior end of the elongated blastopore, leaving free the posterior end. The anterior end becomes the ne ...
... eircular blastopore is reduced to an elongated slit-like opening; but there seems to be some variation in the details of the method of its later reduction. The medullary folds arch over only the anterior end of the elongated blastopore, leaving free the posterior end. The anterior end becomes the ne ...
The Basic Unit of Life
... Life cannot exist without water. Tt is the most plentiful chemical in living things. Water is found in each of the approximately 100 trillion cells in the adult human body. It makes up about two-thirds of the weight of the cell. Water is a useful chemical. Have you ever put sugar in a cup of tea? Wh ...
... Life cannot exist without water. Tt is the most plentiful chemical in living things. Water is found in each of the approximately 100 trillion cells in the adult human body. It makes up about two-thirds of the weight of the cell. Water is a useful chemical. Have you ever put sugar in a cup of tea? Wh ...
ANIMAL TISSUES
... Cells group together in the body to form tissues. A tissue is an ensemble of cells, not necessarily identical, but from the same origin, that together carry out a specific function. These are called tissues because of their identical functioning. There are only four types of tissues that are dispers ...
... Cells group together in the body to form tissues. A tissue is an ensemble of cells, not necessarily identical, but from the same origin, that together carry out a specific function. These are called tissues because of their identical functioning. There are only four types of tissues that are dispers ...
Ch_20_lecture_presentation
... • The B agglutinogen of the donor will not activate any agglutinins of the patient because the patient does not have any agglutinins; however: • The A agglutinogen of the patient will activate the a agglutinin from the donor • Agglutination will occur • This is not a safe donation ...
... • The B agglutinogen of the donor will not activate any agglutinins of the patient because the patient does not have any agglutinins; however: • The A agglutinogen of the patient will activate the a agglutinin from the donor • Agglutination will occur • This is not a safe donation ...
The Lymphatic System
... tissue fibres, along with stem cells that can divide and produce blood cells • Lymphocytes begin development in the • bone marrow o B lymphocytes (B cells) begin in bone marrow and then migrate to secondary lymphoid organs to mature o T lymphocytes (T cells) in bone marrow and then migrate to the th ...
... tissue fibres, along with stem cells that can divide and produce blood cells • Lymphocytes begin development in the • bone marrow o B lymphocytes (B cells) begin in bone marrow and then migrate to secondary lymphoid organs to mature o T lymphocytes (T cells) in bone marrow and then migrate to the th ...
bluebird bio, Inc. - corporate
... This release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding bluebird bio’s existing product candidates and research programs. Any forward-looking statements are based on management’s current expectation ...
... This release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding bluebird bio’s existing product candidates and research programs. Any forward-looking statements are based on management’s current expectation ...
Female Anatomy & Physiology
... 3. Secondary Follicles: 1 or 2 primary follicles progress to this stage each cycle Primary oocyte larger, finishes first division of meiosis to become a secondary oocyte, also forming a polar body. Follicle grows larger as follicular cells divide to form many layers; spaces begin to develop in cente ...
... 3. Secondary Follicles: 1 or 2 primary follicles progress to this stage each cycle Primary oocyte larger, finishes first division of meiosis to become a secondary oocyte, also forming a polar body. Follicle grows larger as follicular cells divide to form many layers; spaces begin to develop in cente ...
Cnidarians (Phylum Cnidaria)
... lined with cells containing small, fluid-filled capsules containing a thread able to be quickly ejected. The thread can be sticky or armed with spines or consist of a long tube that wraps around parts of the prey. ...
... lined with cells containing small, fluid-filled capsules containing a thread able to be quickly ejected. The thread can be sticky or armed with spines or consist of a long tube that wraps around parts of the prey. ...
Platyhelminthes
... germ layers, bilateral symmetry, and cephalization. The three embryonic germ layers include ectoderm, endoderm, and mesoderm. ...
... germ layers, bilateral symmetry, and cephalization. The three embryonic germ layers include ectoderm, endoderm, and mesoderm. ...
Tissues PowerPoint
... • Connective tissue remains mitotic and forms repair (scar) tissue • With some exceptions, muscle tissue becomes amitotic by the end of puberty • Nervous tissue becomes amitotic shortly after birth. © 2015 Pearson Education, Inc. ...
... • Connective tissue remains mitotic and forms repair (scar) tissue • With some exceptions, muscle tissue becomes amitotic by the end of puberty • Nervous tissue becomes amitotic shortly after birth. © 2015 Pearson Education, Inc. ...
B3 Homework and answers
... wound around one another in the form of a double _______________. Four chemical bases, represented by the letters A, _______________, C and T, make up the code. In groups of _______________, these bases determine the order in which amino acids are joined together to form the many tens of thousands o ...
... wound around one another in the form of a double _______________. Four chemical bases, represented by the letters A, _______________, C and T, make up the code. In groups of _______________, these bases determine the order in which amino acids are joined together to form the many tens of thousands o ...
Embryological Development of Skeletal Structures of Head and
... grooves that at this stage are in continuity with the developing oral cavity. The maxillary processes continue to enlarge, encroaching on the stomadeum, to form a primitive oral cavity The first branchial arch gives rise to muscles of mastication (temporalis, masseter, lateral pterygoid, medial pter ...
... grooves that at this stage are in continuity with the developing oral cavity. The maxillary processes continue to enlarge, encroaching on the stomadeum, to form a primitive oral cavity The first branchial arch gives rise to muscles of mastication (temporalis, masseter, lateral pterygoid, medial pter ...
1 - Wsfcs
... A. The cells of a growing child divide to make more cells, and those cells are each half the size as the cells were before they divided. The cells do not grow before they divide again. B. The cells of a growing child divide to make more cells, and those cells grow to become the same size as the cell ...
... A. The cells of a growing child divide to make more cells, and those cells are each half the size as the cells were before they divided. The cells do not grow before they divide again. B. The cells of a growing child divide to make more cells, and those cells grow to become the same size as the cell ...
Human Systems and Homeostasis
... Humans, like almost all multicellular organisms, are collections of specialized cells that work together. These cells arise from a single cell, the zygote, which is formed by the union of an egg and sperm. The zygote divides and differentiates into more than 200 different types of human cells. The ...
... Humans, like almost all multicellular organisms, are collections of specialized cells that work together. These cells arise from a single cell, the zygote, which is formed by the union of an egg and sperm. The zygote divides and differentiates into more than 200 different types of human cells. The ...
Cells: The Basic Units of Life
... one kind of methane-making archaebacteria that lives deep in the ocean near volcanic vents. The temperature of the water from those vents is extreme: it is above the boiling point of ...
... one kind of methane-making archaebacteria that lives deep in the ocean near volcanic vents. The temperature of the water from those vents is extreme: it is above the boiling point of ...
Embryonic stem cell
Embryonic stem cells (ES cells) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage preimplantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells. Isolating the embryoblast or inner cell mass (ICM) results in destruction of the blastocyst, which raises ethical issues, including whether or not embryos at the pre-implantation stage should be considered to have the same moral or legal status as more developed human beings.Human ES cells measure approximately 14 μm while mouse ES cells are closer to 8 μm.