Sea urchin Study guides, Class notes & Summaries

Fertilization Correct Answer-joining of a sperm and an egg to form a diploid zygote Organisms that use external fertilization Correct Answer-most animals who participate in this live in aquatic environments like tadpoles -tend to produce large number of gametes How are gametes released for external fertilization Correct Answer--gametogenesis occurs in response to environmental cues( lengthening days and warmer water temperatures) that indicate a favorable season for breeding -gametes are...

Biology Praxis Questions and Answers with Verified Solutions Which of the following characteristics of a material found on the bark of a tree most likely prove that the material is a living thing? the material appears to reproduce on its own Given the DNA sequence 5' ATGCCCTCA 3', which of the following is the correct complementary sequence of messenger RNA? 3' UACGGGAGU 5' *RNA = uracil replaces thymine in DNA According to evolutionary theory, which of the following individ...

CMMB 403 Exam with 100% Correct Answers | Verified | Latest 2024 Version Mid-blastula transition (MBT) transition from synchronous to asynchronous cell division Blastocoel cavity during development around time of MBT, fluid-filled space; future anus (frog) and future mouth (sea urchin) Gastrulation rearrangement of cell layers during early embryo development; endoderm, mesoderm and ectoderm rearrangment Fate map used at specific stage of embryo development that can tell what cells will b...

Mid-blastula transition (MBT) transition from synchronous to asynchronous cell division Blastocoel cavity during development around time of MBT, fluid-filled space; future anus (frog) and future mouth (sea urchin) Gastrulation rearrangement of cell layers during early embryo development; endoderm, mesoderm and ectoderm rearrangment Fate map used at specific stage of embryo development that can tell what cells will become later in development Oocyte immature egg

Classes of membrane molecules is a marker for the phagocytosis of apoptotic cells Phosphatidylserine Pollen grains are treated with Colchicine in culture Resulting plants are dihaploid and fertile Nyctinasty closing of leaves or flowers at night Epinasty perplexing behavior seen during the flooding of roots of plants Food source of black bread mold (a zygomycete) has been depleted a zygosporangia forms Membranes responsible for respiration in developing bi...

Biology Praxis FORM 1 Questions and Answers Already Passed Which of the following characteristics of a material found on the bark of a tree will most likely prove that the material is a living thing? The material appears to reproduce on its own. Given the DNA sequence 5' ATGCCCTCA 3', which of the following is the correct complementary sequence of messenger RNA? 3' U A C G G G A G U 5' According to evolutionary theory, which of the following individuals has the greatest Darwini...

BIOS 1705: Lab Quiz 1 with Verified Solutions - **What part of the microscope moves the slide around the stage?** - Stage adjustment knobs - **Which lens is closest to the eye when using a microscope?** - Ocular - **What knob should you use to focus at low power only?** - Coarse adjustment knob - **What does the condenser do in a microscope?** - Concentrates the light on the specimen - **If you have a high power objective lens with a magnification of 40x, what would be the ...

Fertilization - joining of a sperm and an egg to form a diploid zygote Organisms that use external fertilization - most animals who participate in this live in aquatic environments like tadpoles -tend to produce large number of gametes How are gametes released for external fertilization - -gametogenesis occurs in response to environmental cues( lengthening days and warmer water temperatures) that indicate a favorable season for breeding -gametes are released in response to specific cues f...

In the Background section, it is noted that inhibition of protein synthesis blocks cell division in sea urchins. This observation implies that: - new proteins must be made for cell division to occur. Why did the researchers choose sea urchin embryos to study cell division? - Sea urchin embryo cells divide rapidly by mitosis. In the gel, the amount of protein can be determined by: - the intensity of the band. In the gel, proteins migrate different distances based on: - their size and charge....

cmmb midtermRTK pathway and FGFs - correct answer Ligand, RTK, GEF, RAS, RAF, MEK,ERK, TF, Transcription morula, blastula, gastrula blastomere - correct answer morula: cleavage stage embryo, no cavityblastula: cleavage stage, when there is a cavity in the embryogastrula: embryo undergoing gastrulationneurula: embryo as neural tube is formingblastomere: any cell of a cleavage stage embryo cleavage - correct answer rapid cell divisions divide the zygote cytoplasm into many smaller cells w...