Monday, August 31, 2009

Liz #13-22


13












This is a frond. A frond is a large leaf with many different divisions to it. Fronds have the structure of ferns and alga. Unlike the fern and the alga, fronds have spore-bearing reproductive structures.


14












This is my little brother and as a human, he is an example of a heterotroph. A heterotroph is an organism that cannot derive energy from photosynthesis or inorganic chemicals. Heterotrophs have to feed on other plants and animals to obtain chemical energy.




15













A flower is an example of an organism that goes through ATP. ATP is a process that takes place through respiration so that a plant can produce its own energy




16











The bark of a tree is an example of cambium. Cambium is a layer of delicate meristematic tissue between the inner bark and the wood. It is found on the outside and forms all secondary growth in plants and forms the annual rings of wood.




17












My little brothers little hand represents epithelial tissue. Epithelial tissue is a tissue that covers internal organs and other internal surfaces of the body.


18












The outer layer of the leaf is the cuticle layer of the plant. This layer protects and supports the plant.


19












The ear is an example of connective tissue. Connective tissue supports and surrounds other tissues and organs, cartliage is a common example.


20












The inside of a lemon represents radial symmetry. Each segment of the lemon is evenly distributed by the lines.


21













The cat represents an endotherm. An endotherm is an animal that is capable of maintaining a constant body temperature.


22












Fermentation is the process in which grape juice is joined with other ingredients resulting in a chemical reaction that produces wine.

Dinah post #4 45-50




45. endotherm- an endotherm is a warm-blooded organism. The dog is an example of an endotherm.












46. long-day plant- the peas are long-day plants because they need sunlight for more hours than other plants. Peas flower in the late spring early summer season as the days get longer.













47. heterotroph- a heterotroph is an organism that cannot produce its own food so it depends on an organic substance such as plants to receive nutrition. The goat is an example of a heterotroph because it feeds from the grass and other plants.









48. modified root of a plant- this plant has a horizontal root to it. Modified roots of a plant contain a horizontal shape to itself.










49. cuticle layer of a plant- the long leaves show their outer covering which is the cuticle layer. The cuticle layer protects and supports the plant. It also serves as the barrier for water transportation throughout the leaves.












50. gymnosperm leaf- a seed plant that has reproduced an exposed seed and are not inside an ovary contain leaves such as these needle-like leaves.





Liz #1-12...for some reason couldn't put in more picture so the rest will be on a different post







1















2










3








These are different types of carbohydrates. A carbohydrate is an organic compound consisting of a chain or ring of carbon atoms to which hydrogen and oxygen atoms are attached in a 2:1. Carbohydrates include sugars, starch, glycogen and cellulose.







4









A cucumber is a eukaryote. An eukaryote is a cell characterized by membrane-bounded organelles and one that possesses chromosomes whose DNA is associated with proteins; an organism composed of such cells.





5









Cheese and an apple are two different types of proteins. A protein is a chain of amino acids joined by peptide bonds.





6










These are amniotic eggs. They are isolated and protected from the environment by a shell during the period of their development. It is completely self-sufficient and it only requires oxygen.



7











Carrots are known as enzymes. An enzyme is a protein that is capable of speeding up specific chemical reactions by lowering the required activation energy.



8











Trees are known as autotrophs. An autotroph is an organism that is able to produce its own food source using only simple inorganic compounds.




9











Pollination is the transfer of pollen from an anther to a stigma. In this picture my pen is attempting to point to the pollinator which is the bee. The bee is in charge of the transfer.




10











Mushrooms are known as a type of spore. A spore is a reproductive cell, mostly unicellular, capable of developing into an adult without fusion with another cell.


11












Spiders have segmented bodies. A spiders body is divided into two easily recognized parts, the prosoma,composed of the fused head and thorax and the abdomen.


12













Flowers are known to reproduce through asexual reproduction. Asexual reproduction is the process by which an individual inherits all of its chromosomes from a single parent and is genetically identical to the parent by the process of meiosis.

Hot Zone questions

1. I thought the book was excellent. It was really interesting, and I couldn't put it down. What I like best is that while reading it, I was learning things I would've never known about ebola and marburg, and the other diseases involved with monkeys. I think we read it before AP biology to get an understanding of how biology works. It helped me understand how diseases work inside the body, and what they can do to you.

2. a) When someone has ebola, their cells are taken over by the disease forming crystalloids, and eventually explode. That causes the body to "bleed out" which means all of their organs bleed and don't stop until there is no blood left.

b) Ebola is a deadly disease, which can be transmitted through contact with infected blood. Once you are infected, there is no cure.

c) Biosafety level 4 procedure includes stages before you can actually enter the hot zone. Sharp objects are not normally used inside a hot zone becuase they can cause rips or tears in one's suit, which could cause that person to be infected. Someone in a level 4 hot zone must wear a biocontainment suit. The room is filled with negative air pressure so the disease cannot escape.

3. The article on malaria is relevant to the situation in the hot zone, because the disease originates in animals and can be passed on to humans. The animals starting with the disease are chimps, and in the hot zone monkeys are being tested for ebola. Both diseases have been around for many years. The diseases can last for a very long time, which is why they must take precautions so the disease doesn't inhabit humans. There are two different parasites, as there are different types of ebola. Also no one knows where malaria exactly came from, like ebola.

Brianna Scavenger Hunt: 26-50

50. Endosperm
Endosperm is the tissue produced in the seeds of most flowering plants. It is the tissue containing stored food in a seed that surrounds the embryo and is eventually digested by the embryo as it grows at the time of fertilization.
49. Xylem
Xylem is the wood of a tree, made up of strong fibers, tracheids and vessels. It is vascular tissue designed to help transport water and minerals from the root to the leaves. This is a picture of the bottom of a tree. Xylem helps this tree's leaves recieve enough water.
48. Rhizome
A rhizome is a horizontal underground stem, with leaves and buds, that serves as a storage organ and a means of vegetative propagation. It is a horizontal underground stem of some plants that sends out roots and shoots from its nodes.

47. Biome
This is a picture from Shelter Island. Beyond the water is a forest, which is an example of a biome. A biome is aliving community characterized by distinctive plant and animal species and maintained under the climatic conditions of the region. Biomes include: permanent ice, mountain, desert, grassland, scrub forest, chaparral deciduous forest, taiga, and tundra.

46. Radial Symmetry

This lemon is a picture of radial symmetry. Radial symmetry is a form of symmetry in which the parts of an organism are arranged concentrically around a central oral/aboral axis and more than one imaginary plane through this axis results in halves that are mirror-images of each other.

45. Dominant vs. Recessive
This picture shows a dominant gene vs. a recessive gene. Brown hair is dominant (D) over blonde hair (d).
44. Endotherm
This is a picture I took on a fishing trip this summer. It is a seagull which is also and endotherm. An endotherm is a warm-blooded animal species is one whose members maintain a constant body temperature or thermal homeostasis.
43. Cambium
Cambium is a layer of active cells that separates the xylem and the phloem. These cells produce the new xylem and phloem that are represented by the annual rings of trees. This picture is part of a tree stump.
42. Evidence of different alleles for the same trait

Alleles are either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character. Some alleles are dominant over others. My mom's eye is brown and my sister's eye is blue/gray.

41. Adaptation of a Plant
Plants have adaptations to help them survive (live and grow) in different areas. In this picture, this plant adapted to conditions of growing in between concrete.

40. Auxin Producing Area of a Plant
Auxin is a plant harmone that stimulates growth. Auxin moves only downward but gravity does not cause its movement. It is generally produced by apical shoot meristems and developing leaves.

39. Mating Behaivor
I was being "very careful" when I took this picture of "mating behaivor." Mating is a very essential process for all living organisms on this earth. In order to keep a species alive, mating is necessary. Many animals exhibit different mating behaivors.

38. Pollinator
Although it is hard to see the bee in this picture, it is an example of a pollinator. The bee is an insect that carries pollen from one flower to another.
37. Modified Root of a Plant

This carrot is considered to have a modified root. A modified root is the usual underground portion of a plant that lacks buds, leaves, etc. These include carrots, turnips, and beets.

36. Modified Stem of a Plant
Modified stems located below ground are bulbs, corms, rhizomes, and tubers. This picture is an onion which is considered to be a bulb.

35. Genetic Variations within a Population
In this picture, you can see the same species of flowers. However, the physical colors of them are different. This shows a genetic variation.

34. Difference between Monocots and Dicots
In this picture, the grass is a monocot while the carrot is the dicot. A monocot is any of various flowering plants, such as grasses, orchids, and lilies, having a single cotyledon in the seed. A dicot has two cotyledons and the stem grows by deposit on its outside
33. Gymnosperm Cone
This is a picture of a gymnosperm cone. Their female sex germs reside in ovules, as in regular flowers, but the ovules themselves are not enclosed within the flower's ovaries, as they are among flowering plants

32. Flower Ovary
A flower ovary is an ovary in a part of the female reproductive organ of the flower or gynoecium. In this picture, I zoomed in so the inside of this flower's reproductive organs are visible.

31. Cuticle Layer of a Plant
This is a cuticle layer of a plant. The cuticle layer is a protective layer covering the outer cell layer (epidermis) of the green, aerial parts of land plants. Cuticles protect plants against various kinds of physical and chemical hazzards.

30. Spore
A spore is a haploid reproductive cell, usually unicellular, capable of developing into an adult without fusion of another cell. In this picture, the middle part of the flower contains the spores used for asexual reproduction.

29. Calvin Cycle
The Calvin cycle (or Calvin-Benson-Bassham cycle) is a series of biochemical reactions that take place in the stroma of chloroplasts in photosynthetic organisms. In this picture, you can see the dark spots or dark reactions of C3 photsynthesis on these leaves.
28. Parasitism
Parasitism is a living arrangement in which an organism lives on or in an organism of a different species and derives nutrients from it. In this picture, a fly feeds off of the microorganisms on this piece of dog feces.

27. Tropism
Tropism is a response to an external stimulus. This plant has the tendency to move towards a specific target (the sun). You can tell that it is growing more towards the left where the sun shines through the window.
26. Lipids for Storing Energy
Lipids are any group of organic compounds including the fats, oils, waxes, sterols, nucleic acids, and triglycerides. Lipids are characterized by being insoluble in water, and account for most of the fat present in the human body. This picture displays a person and one of the "fatty" parts of the body.