Homework Answers
Answer 1:correct option B:
Sperms and eggs are example of gametes.
Answer2:correct option B:
A normal sperm has 1 set of chromosome.(haploid)
Answer 3:correct option C:
fertilized egg contains 2 sets of chromosomes. (Diploid)
Answer 4: correct option A
Fertilization is the process which marks the beginning of new life.
Answer 5:correct option A
Blastula refers to the double layer developmental stage of sea urchin.
Answer6:correct option B
Morula is the solid mass of cells.
Answer 7:correct option C
Fertilization membrane prevents the entry of sperm in fertilized egg.
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FERTILIZATION AND DEILDU Chapter Review 1. Sperms and eggs are examples of C. blastomeres A. sex...
Draw and label each of the cell types indicated below, and answer the following questions. Sperm...
Draw and label each of the cell types indicated below, and answer the following questions. Sperm cells a) How does the size of the sperm cells compare with the size of the unfertilized egg cells (be as specific as possible: record the magnification that you used for each.) Unfertilized egg cells b) Are these cells haploid or diploid? Fertilized egg (zygote, fertilization membrane) c) Is this cell haploid or diploid? d) How does the appearance of this cell compare with...
no need explaination, I will give a thumb thanks. 16. Which of the following does NOT...
no need explaination, I will give a thumb thanks.
16. Which of the following does NOT have a gastrovascular cavity? a) earthworm b) flatworm c) hydra d) jellyfish 26. Sexual reproduction is the creation of a zygote by a) development of an unfertilised egg. b) fusion of male gamete (sperm) and female gamete (egg). c) fusion of a sperm from one species and an egg from another species. d) fusion of female gamete (sperm) and male gamete (egg). 22. The...
- The hollow-ball stage in the development of an invertebrate embryo is known as the A)...
- The hollow-ball stage in the development of an invertebrate embryo is known as the A) ectoderm c) blastula B) gastrula D) endoderm Questions 105 through 107 refer to the following: The diagram below represents selected steps occurring in human reproduction 0-9-9--0-C D) 7 2 3 105) Which number indicates a zygote? A) 5 B) 3 C) 2 106) Which number indicates the process that restores the 2n number of chromosomes? GA) 4 B) 8 C) 5 A D 1...
135. DEVELOLWENTAL BIOLOGY BIOL 4460 One of the following choices is in the correct order of...
135. DEVELOLWENTAL BIOLOGY BIOL 4460 One of the following choices is in the correct order of occurrence a. gastrulation, ovulation, organogenesis, cleavage b. ovulation, fertilization, cleavage, morula d. fertilization, ovulation, implantation, cleavage e implantation, cleavage, ovulation, fertilization c. cleavage, ovulation, gastrulation, implantation 136. DEVELOPMENTAL BIOLOGY BIOL 4460 The process that a mammalian sperm must undergo before it attains ability to fertilize an egg a. Mitosis b. Meiosis c. Capacitation d. Spermatogenesis e. Spermiogenesis Name: 137. DEVELOPMENTAL BIOLOGY BIOL 4460 Sperm...
no explaination is needed, I will give a thumb, thanks' 16. In close comparisons, external fertilization...
no explaination is needed, I will give a thumb, thanks'
16. In close comparisons, external fertilization often yields more offspring than does Internal fertilization, but Internal fertilization offers the advantage that a) It is the only way to ensure the survival of the species b) It requires less time and energy to be devoted to reproduction. d the smaller number of offspring produced often receive a greater amount of parental investment. d) It permits the most rapid population increase 17....
Choose the correct order of events in sea urchin fertilization. Select one: ОО a. Acrosomal reaction;...
Choose the correct order of events in sea urchin fertilization. Select one: ОО a. Acrosomal reaction; slow block to polyspermy; fast block to polyspermy b. Fast block to polyspermy; acrosomal reaction; slow block to polyspermy c. Acrosomal reaction; formation of the acrosomal process; fusion of egg and sperm plasma membranes; formation of the fertilization cone d. Formation of the acrosomal process; acrosomal reaction; fast block to polyspermy e. Acrosomal reaction; sperm organelles enter egg cytoplasm; fusion of egg and sperm...
A sea urchin egg is treated with an inhibitor that prevents the rise in intracellular Ca2+...
A sea urchin egg is treated with an inhibitor that prevents the rise in intracellular Ca2+ right before fertilization. Which of the following events would be blocked by addition of this inhibitor? Choose one or more: A. formation of vesicles under the plasma membrane B. exocytosis of hydrolytic enzymes C. fertilization envelope rising from the cell surface D. entry of multiple sperm into the cell
Match the following terms related to the human life cycle. Group of answer choices Haploid -...
Match the following terms related to the human life cycle. Group of answer choices Haploid - Diploid- Gamete- Mitosis- Meiosis- Fertilization- Zygote- Crossing over- Synapsis- Somatic cells- Gonad cell- Karyotype- Matching choices a. ordered display of an organisms chromosomes. b. cell with pairs of homologous chromosomes, 2n c. division of nuclei, ending with two 2n cells d. fusing of egg and sperm e. non-sex cells f.pairing of homologous chromosomes during prophase I g. cell with a single set...
Developmental Biology 1. The of the amphibian embryo is the “organizer”. is localized to the dorsal...
Developmental Biology
1. The of the amphibian embryo is the “organizer”. is localized to the dorsal region of the amphibian and fish embryo and is a transcription factor that helps define that region. 3. In amphibians the pattern of cleavage is - 4. In fish the pattern of cleavage is 5. In amphibians the cortical cytoplasm of a newly fertilized egg rotates about 30° resulting in the appearance of a visible zone (in many species) between the animal and vegetal...
Haplodiploidy 9. Males bees are known to develop parthenogenically from unfertilized eggs and are therefore haploid....
Haplodiploidy 9. Males bees are known to develop parthenogenically from unfertilized eggs and are therefore haploid. Females (both workers and queens) originate from fertilized (diploid) eggs. Sex chromosomes are not involed in this mechanism of sex determination which is characteristic of the insect order Hymenoptera. The quantity and quality of food available to the diploid larvae determine whether that female will become a sterile worker or a fertile queen. Thus environment here determines sterility or fertility but does not alter...
Draw and label each of the cell types indicated below, and answer the following questions. Sperm cells a) How does the size of the sperm cells compare with the size of the unfertilized egg cells (be as specific as possible: record the magnification that you used for each.) Unfertilized egg cells b) Are these cells haploid or diploid? Fertilized egg (zygote, fertilization membrane) c) Is this cell haploid or diploid? d) How does the appearance of this cell compare with...
no need explaination, I will give a thumb thanks.
16. Which of the following does NOT have a gastrovascular cavity? a) earthworm b) flatworm c) hydra d) jellyfish 26. Sexual reproduction is the creation of a zygote by a) development of an unfertilised egg. b) fusion of male gamete (sperm) and female gamete (egg). c) fusion of a sperm from one species and an egg from another species. d) fusion of female gamete (sperm) and male gamete (egg). 22. The...
- The hollow-ball stage in the development of an invertebrate embryo is known as the A) ectoderm c) blastula B) gastrula D) endoderm Questions 105 through 107 refer to the following: The diagram below represents selected steps occurring in human reproduction 0-9-9--0-C D) 7 2 3 105) Which number indicates a zygote? A) 5 B) 3 C) 2 106) Which number indicates the process that restores the 2n number of chromosomes? GA) 4 B) 8 C) 5 A D 1...
135. DEVELOLWENTAL BIOLOGY BIOL 4460 One of the following choices is in the correct order of occurrence a. gastrulation, ovulation, organogenesis, cleavage b. ovulation, fertilization, cleavage, morula d. fertilization, ovulation, implantation, cleavage e implantation, cleavage, ovulation, fertilization c. cleavage, ovulation, gastrulation, implantation 136. DEVELOPMENTAL BIOLOGY BIOL 4460 The process that a mammalian sperm must undergo before it attains ability to fertilize an egg a. Mitosis b. Meiosis c. Capacitation d. Spermatogenesis e. Spermiogenesis Name: 137. DEVELOPMENTAL BIOLOGY BIOL 4460 Sperm...
no explaination is needed, I will give a thumb, thanks'
16. In close comparisons, external fertilization often yields more offspring than does Internal fertilization, but Internal fertilization offers the advantage that a) It is the only way to ensure the survival of the species b) It requires less time and energy to be devoted to reproduction. d the smaller number of offspring produced often receive a greater amount of parental investment. d) It permits the most rapid population increase 17....
Choose the correct order of events in sea urchin fertilization. Select one: ОО a. Acrosomal reaction; slow block to polyspermy; fast block to polyspermy b. Fast block to polyspermy; acrosomal reaction; slow block to polyspermy c. Acrosomal reaction; formation of the acrosomal process; fusion of egg and sperm plasma membranes; formation of the fertilization cone d. Formation of the acrosomal process; acrosomal reaction; fast block to polyspermy e. Acrosomal reaction; sperm organelles enter egg cytoplasm; fusion of egg and sperm...
Developmental Biology
1. The of the amphibian embryo is the “organizer”. is localized to the dorsal region of the amphibian and fish embryo and is a transcription factor that helps define that region. 3. In amphibians the pattern of cleavage is - 4. In fish the pattern of cleavage is 5. In amphibians the cortical cytoplasm of a newly fertilized egg rotates about 30° resulting in the appearance of a visible zone (in many species) between the animal and vegetal...
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