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BIOLOGY EOC REVIEW - G. Holmes Braddock High School
... • You should know that mitosis describes the division of the nucleus in four stages. PMAT prophase, metaphase and telophase. Once thought to be a resting period, Interphase which has 3 stages the G1 or gap 1, the S stage, and the G2 or gap 2 stage; is now known to be an important prepatory phase. • ...
... • You should know that mitosis describes the division of the nucleus in four stages. PMAT prophase, metaphase and telophase. Once thought to be a resting period, Interphase which has 3 stages the G1 or gap 1, the S stage, and the G2 or gap 2 stage; is now known to be an important prepatory phase. • ...
Animal Development
... egg’s ER causes cortical granules to release enzymes The enzymes in effect harden the egg’s membrane (fertilization membrane) This hard membrane is not penetrable by any more sperm, so only 1 sperm fertilizes the egg ...
... egg’s ER causes cortical granules to release enzymes The enzymes in effect harden the egg’s membrane (fertilization membrane) This hard membrane is not penetrable by any more sperm, so only 1 sperm fertilizes the egg ...
7th Grade Science Standards—Life Science (one semester)
... and muscle cells) to the function that the cell performs. Explain the relationship between tissues that make up individual organs and the functions the organ performs (e.g., valves in the heart control blood flow, air sacs in the lungs maximize surface area for transfer of gases). Describe the compo ...
... and muscle cells) to the function that the cell performs. Explain the relationship between tissues that make up individual organs and the functions the organ performs (e.g., valves in the heart control blood flow, air sacs in the lungs maximize surface area for transfer of gases). Describe the compo ...
ANSWERS on Inheritance File
... 2. named good feature of other variety / larger seeds / more seeds / more yellow / more white / sweeter / eq; 3. collect seeds / seeds produced / eq; 4. grow seeds / eq; 5. test new sweet corn / eq; 6. continue process / repeat / further selective breeding / eq ; ...
... 2. named good feature of other variety / larger seeds / more seeds / more yellow / more white / sweeter / eq; 3. collect seeds / seeds produced / eq; 4. grow seeds / eq; 5. test new sweet corn / eq; 6. continue process / repeat / further selective breeding / eq ; ...
Marjorie Ferguson
... barely visible; full/three-quarters of the face to the camera. Projected mood: blandly pleasing, warm bath warmth, where uniformity of features in their smooth – Invitational – Emphasis on the eyes; Mouth shut with hint of a smile; head to one side or looking back to the camera. Projected mood: sugg ...
... barely visible; full/three-quarters of the face to the camera. Projected mood: blandly pleasing, warm bath warmth, where uniformity of features in their smooth – Invitational – Emphasis on the eyes; Mouth shut with hint of a smile; head to one side or looking back to the camera. Projected mood: sugg ...
Life science semester 2 final review
... 9. A Membrane around the developing baby, filled with fluid to protect the baby. 10. Transports nutrients and oxygen to the baby. 11. The point at which menstruation ends in middle age ...
... 9. A Membrane around the developing baby, filled with fluid to protect the baby. 10. Transports nutrients and oxygen to the baby. 11. The point at which menstruation ends in middle age ...
Evolution - the progressive change in the characteristics
... presence of the genes necessary for survival before or as the change occurs, not after. Organisms are not able to consciously alter their genome. Given enough time, response of a population to changes in it’s genome leads to speciation, or the development of a new species from past & related popula ...
... presence of the genes necessary for survival before or as the change occurs, not after. Organisms are not able to consciously alter their genome. Given enough time, response of a population to changes in it’s genome leads to speciation, or the development of a new species from past & related popula ...
Phylum Platyhelminthes - Flatworms Dorsoventrally flattened bodies
... Lack sensory and locomotive adaptations of free-living forms feed on host tissue, food taken in through mouth, resistant to host defenses ...
... Lack sensory and locomotive adaptations of free-living forms feed on host tissue, food taken in through mouth, resistant to host defenses ...
Phylum Platyhelminthes - Flatworms Dorsoventrally flattened bodies
... Lack sensory and locomotive adaptations of free-living forms feed on host tissue, food taken in through mouth, resistant to host defenses ...
... Lack sensory and locomotive adaptations of free-living forms feed on host tissue, food taken in through mouth, resistant to host defenses ...
Biology-CST Test 1 Two students were testing the amount of
... 66 A species of finch has been studied on one of the geographically isolated Galapagos Islands for many years. Since the island is small, the lineage of every bird for several generations is known. This allows a family tree of each bird to be developed. Some family groups have survived and others ha ...
... 66 A species of finch has been studied on one of the geographically isolated Galapagos Islands for many years. Since the island is small, the lineage of every bird for several generations is known. This allows a family tree of each bird to be developed. Some family groups have survived and others ha ...
Solutions - Vanier College
... gamete-producing organism. Which of the following statements about alternation of generations is FALSE? a. The haploid and diploid organisms may or may not differ morphologically. b. The haploid and diploid organisms differ genetically. c. Only the haploid organism may also reproduce asexually. d. H ...
... gamete-producing organism. Which of the following statements about alternation of generations is FALSE? a. The haploid and diploid organisms may or may not differ morphologically. b. The haploid and diploid organisms differ genetically. c. Only the haploid organism may also reproduce asexually. d. H ...
Document
... favorable variations on to their offspring. If the result of crossing over causes the offspring to be less suited for its environment, it may not survive. Or, if the offspring does survive, it may not be reproductively competitive. This means that it may not be able to secure a mate. These “unfavora ...
... favorable variations on to their offspring. If the result of crossing over causes the offspring to be less suited for its environment, it may not survive. Or, if the offspring does survive, it may not be reproductively competitive. This means that it may not be able to secure a mate. These “unfavora ...
Vertebrates - Har
... Excrete ammonia (water inhabitants) or urea (land inhabitants) Urea is stored in urinary bladder ...
... Excrete ammonia (water inhabitants) or urea (land inhabitants) Urea is stored in urinary bladder ...
Embryology Notes
... Bacteria double their DNA and then split in two, with one complete set of DNA in each cell ...
... Bacteria double their DNA and then split in two, with one complete set of DNA in each cell ...
1. Jointed appendages have a variety of specialized functions 2. The
... 4. Meroplanktonic larvae don’t compete with adults for food; metamorphosis provides a gradual change to adult life. 5. An open circulatory system contains a blue pigment called hemocyanin to transport oxygen from the gills to the body. ...
... 4. Meroplanktonic larvae don’t compete with adults for food; metamorphosis provides a gradual change to adult life. 5. An open circulatory system contains a blue pigment called hemocyanin to transport oxygen from the gills to the body. ...
Review for structures
... Zygote -- a cell formed by the union of EGG and SPERM at fertilization. EMBRYO -- organism in early stages of development. PREGNANCY -- carrying a fetus Fertilization -- the union of the EGG and SPERM nuclei Reproductive Terms CONCEPTION - occurrence of fertilization Ovulation - release of an OVULE ...
... Zygote -- a cell formed by the union of EGG and SPERM at fertilization. EMBRYO -- organism in early stages of development. PREGNANCY -- carrying a fetus Fertilization -- the union of the EGG and SPERM nuclei Reproductive Terms CONCEPTION - occurrence of fertilization Ovulation - release of an OVULE ...
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... 76) With the exception of identical twins, siblings who have the same two biological parents are likely to look similar, but not identical, to each other because they have E) a similar but not identical combination of genes. 77) Which of the following statements regarding prokaryotes is false? A) Pr ...
... 76) With the exception of identical twins, siblings who have the same two biological parents are likely to look similar, but not identical, to each other because they have E) a similar but not identical combination of genes. 77) Which of the following statements regarding prokaryotes is false? A) Pr ...
"A flower is a leaf, mad with love"
... About 95% of the species of flowering plants on Earth are hermaphroditic. This means that each individual plant is both male and female. In many cases, each individual flower contains both male and female organs, side-byside. This has the obvious advantage of doubling the chance of successful insemi ...
... About 95% of the species of flowering plants on Earth are hermaphroditic. This means that each individual plant is both male and female. In many cases, each individual flower contains both male and female organs, side-byside. This has the obvious advantage of doubling the chance of successful insemi ...
Linkage Groups - Greater Latrobe School District
... (ggLl) – found that this occurred because of crossing over of the homologous chromosomes • Crossing over does not create delete genes – it does change location on chromosomes leads to new gene combinations (genetic recombination) ...
... (ggLl) – found that this occurred because of crossing over of the homologous chromosomes • Crossing over does not create delete genes – it does change location on chromosomes leads to new gene combinations (genetic recombination) ...
Unit#3 Animal Invertebrate Notes Part 3 Phylum Mollusca What is a
... o Octopi have a higher developed nervous system to remember things for long periods of time ...
... o Octopi have a higher developed nervous system to remember things for long periods of time ...
Animal Kingdom Test Study Guide
... Starfish, mammals, fish, sharks, amphibians, birds Sexual Reproduction Process by which two cells from different parents unite to produce the first cell of the new organism Chordates, earthworms, mammals, some worms, clams, squid, insects ...
... Starfish, mammals, fish, sharks, amphibians, birds Sexual Reproduction Process by which two cells from different parents unite to produce the first cell of the new organism Chordates, earthworms, mammals, some worms, clams, squid, insects ...
Chromosomes
... What kind of chromosome is this? Chromosomes contain genes which are areas of DNA that code for particular proteins. ...
... What kind of chromosome is this? Chromosomes contain genes which are areas of DNA that code for particular proteins. ...
Types of Asexual Reproduction
... Copyright © 2007, McGraw-Hill Ryerson Limited, a subsidiary of the McGraw-Hill Companies. All rights reserved. This page may be reproduced for classroom use by the purchaser of this book without the written permission of the publisher. ...
... Copyright © 2007, McGraw-Hill Ryerson Limited, a subsidiary of the McGraw-Hill Companies. All rights reserved. This page may be reproduced for classroom use by the purchaser of this book without the written permission of the publisher. ...
Sexual reproduction
Sexual reproduction is a form of reproduction where two morphologically distinct types of specialized reproductive cells called gametes fuse together, involving a female's large ovum (or egg) and a male's smaller sperm. Each gamete contains half the number of chromosomes of normal cells. They are created by a specialized type of cell division, which only occurs in eukaryotic cells, known as meiosis. The two gametes fuse during fertilization to produce DNA replication and the creation of a single-celled zygote which includes genetic material from both gametes. In a process called genetic recombination, genetic material (DNA) joins up so that homologous chromosome sequences are aligned with each other, and this is followed by exchange of genetic information. Two rounds of cell division then produce four daughter cells with half the number of chromosomes from each original parent cell, and the same number of chromosomes as both parents, though self-fertilization can occur. For instance, in human reproduction each human cell contains 46 chromosomes, 23 pairs, except gamete cells, which only contain 23 chromosomes, so the child will have 23 chromosomes from each parent genetically recombined into 23 pairs. Cell division initiates the development of a new individual organism in multicellular organisms, including animals and plants, for the vast majority of whom this is the primary method of reproduction. A species is defined as a taxonomic rank. A species is often defined as the largest group of organisms where two hybrids are capable of reproducing fertile offspring, typically using sexual reproduction, although the species problem encompasses a series of difficult related questions that often come up when biologists define the word species. The evolution of sexual reproduction is a major puzzle because asexual reproduction should be able to outcompete it as every young organism created can bear its own young. This implies that an asexual population has an intrinsic capacity to grow more rapidly with each generation. This 50% cost is a fitness disadvantage of sexual reproduction. The two-fold cost of sex includes this cost and the fact that any organism can only pass on 50% of its own genes to its offspring. One definite advantage of sexual reproduction is that it prevents the accumulation of genetic mutations.Sexual selection is a mode of natural selection in which some individuals out-reproduce others of a population because they are better at securing mates for sexual reproduction. It has been described as ""a powerful evolutionary force that does not exist in asexual populations""Prokaryotes reproduce through asexual reproduction but may display processes similar to sexual reproduction (mechanisms for lateral gene transfer such as bacterial conjugation, transformation and transduction), but they do not lead to reproduction. In prokaryotes, the initial cell has additional or transformed genetic material.