4. During fertilization, what process allows steps 1-4 to occur, as shown here? Tail- Outer layers of egg Middle Неad piece Nucleus Acrosome Plasma mombrane Sperm nucleus Egg nucleus Fusion of sperm and egg nuclei A. O ovum travels through oviduct B. O lysosome strengthens the plasma membrane C.O hundreds of sperm penetrate the plasma membrane D. O acrosome enzymes weaken the plasma membrane

Q: In humans genital organs, one of the Following is not true? O a. One of the functions of the testis…

A: Human genital organs are also known as sex organs.

Q: 7. Female sex cells are produced in a. Ova c. Fallopian Tube b. Zygote d. Ovaries 8. The fertilized…

A: 7. Female sex cells are produced in - a) Ova. Explanation: Oogenesis is formation of female gametes.…

Q: 4. Some stages in the development of an individual are listed here. A = differentiation of cells…

A: When sperm fertilizes the ovum, then the formation of a zygote occurs. The zygote undergoes cleavage…

Q: What is a yolk? What is its role in fertilization and development?

A: Extraembryonic membrane: The blastoderm in different species like birds, mammals, and reptiles give…

Q: Consider the male and female reproductive systems. (a) Where does spermatogenesis occur in male?…

A: Reproduction is defined as the biological process of producing a new individual or an offspring…

Q: 11. At which stage does the embryo start to obtain nutrients through placental exchange? A.…

A: *Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 5. Do other organs or organ systems develop at the same time? Are they related to the function of…

A: Question number 5 is incomplete, Hence cannot be answered. Answer 6: If the nucleus of a non-motile…

Q: During oogenesis, oogenetic inhibitors must be deactivated after full growth to allow the

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The umbilical arteries do the following: A. take deoxygenated blood and waste away from the…

A: Introduction :- Blood that has a low oxygen saturation compared to blood exiting the lungs is…

Q: II. This type of cell division occurs during the formation of both sperm and ovum. The first meiotic…

A: Answer is option d.) one secondary oocyte and one polar body.

Q: SOME EVENTS IN THE PROCESS OF FERTILIZATION 1. A single sperm nucleus and an egg nucleus fuse to…

A: Fertilization is the process of combining two haploid cells, the egg and the sperm, to produce a…

Q: List the stages of embryonic development and what happens at each stage

A: Human fertilization occurs when the haploid sperm cells fertilize the haploid gamete. Embryonic…

Q: 5. In the Diagram to the left for each of the abeled ayer. (ectoderm, endoderm or mesoderm) organs…

A: During the process of gastrulation three embryonic layers are formed by which different organs and…

Q: 2. During which trimester do the following events occur? a) heart starts beating b) the body is…

A: Trimester is a group of 12 weeks this term used in case of pregnancy . Due to question answering…

Q: 5) The body symmetry that allows for the body to be bisected into equal halves in only one plane is…

A: 5) The body symmetry that allows for the body to be bisected into two equal halves in only one plane…

Q: 22. When glucose levels in the blood rise, your brain sends a signal to your pancreas. releases…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: 3) List the stages of development once the egg is fertilized. (When a woman and a man have sexual…

A: Human embryonic development, or human embryogenesis, refers to the development and formation of the…

Q: 4. What is the major control centers of oogenesis that secretes ecdysone? A. head B. fat bodies C.…

A: As per bartleby guideline we are allowed to answer only one question please post the other one…

Q: 15.The zone of the testicular follicle where the primary spermatocytes become secondary…

A: Spermatogenesis: Process of formation and maturation of sperms in testis. It includes 5 stages of…

Q: 9. It give some ideas on the developmental stages of certain animals * Chemical embryology…

A: It is related to developmental biology and embryology in which different stages of development of an…

Q: 1. What is the new structure that formed just after fertilization? (We are not referring to new…

A: Later stage embryo shows mitotic division . Prior to this , meiosis occur in gametes .

Q: What are the different mechanisms the egg employed to ensure that only one sperm cell will fertilize…

A: Polyspermy refers to fertilization of an egg cell by numerous sperms. It is avoided during…

Q: 2: No: 03: - In living the most certaih A. Gonads B. Hairs C. Distribution of subcutaneous fat D.…

A: Gonads are the male and female sex organs i.e. testis and ovaries respectively. These lie inside the…

Q: 3. Which is TRUE about asexual reproduction? A presence of zygote B. does not involve gametes C.…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: 1. release of a mature egg from the ovary a. oviduct 2. term used to describe an embryo 8 weeks…

A: Reproductive Biology  Reproductive biology is the branch of biology which deals with the sexual and…

Q: 4. As the embryo develops, what do the amnion and the yolk sac become, respectively? a. A sac that…

A: The amnion is filled with the amniotic fluid due to which the amnion expand and provides protection…

Q: 11, The following is correct regarding embryonic development

A: Digestion is the process in which complex substances are broken down into simple substances.

Q: 4. Look at the structures that the arrows point to below. What do these structures become once…

A: The structure shown in the above picture is termed as ovules.

Q: 1. Embryonic development occurs during this period. A. from the ninth week of gestation to birth…

A: Here I discuss about embryonic development and gastrulation.

Q: 2. Name the two ways fertilization can occur. a. Give an example animal that practices each. b.…

A: WHAT IS FERTILIZATION ? Fertilization is a process of combining of male gamete or sperm with female…

Q: 1. Which of the following layers protect the mammalian oocyte during ovulation? * a. cortical and…

A: Structure of mammalian Oocyte:  mature mammalian Oocytes have many layers before ovulation- Follicle…

Q: 22. When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancre…

A: (You have posted multiple questions; I have solved first question bekow. Please post each question…

Q: Outline the events for spermatogenesis. Why is spermatogenesis a significant process for sperm…

A: The male germinal cells which produce the sperms are known as the primary germinal cells or…

Q: 5. Describe/draw the journey that the sperm cells go through to exit the O male body. Include the…

A: The process of sperm ejaculation during the intercourse involves series of steps that the sperms…

Q: 20. The structure that attaches the mammalian embryo to the placenta is a. hypothalamus. b.…

A: Reproduction is the process of producing young ones from the parent.

Q: 9. Some biologists contend that the term double fertilization is a misnomer and that the process…

A: Fertlizatiion is the process of the male gamete, sperm, fusing with the female gamete, the ovum,…

Q: D E Figure 42.11 Use the figure above showing human embryonic developmental day 14 to ans The…

A: Embryo is pre birth stage. It is formed just after fertilization and is followed by fetal stage. It…

Q: 5. What are the four extraembryonic membranes in fetal development? A. O acrosome, placenta, plasma…

A: During the development of chick and other vertebrates, certain specialised embryonic tissue or…

Q: 1. Spermatogenesis is the process in which an animal produces 2. Oogenesis is the process in which…

A: *NOTE: Kindly repost for other questions Dear Student as per the guidelines we are supposed to…

Q: What is the primary purpose of the fertilization membrane? a)Provide the growing embryo with food…

A: Sperm and egg (ova) are male and female gametes respectively. Fertilization is key process in sexual…

Q: 17. A researcher discovers a certain genetic disorder is appearing more often in males than in…

A: Genetics is the study of genes, their interactions, and the effect of environment on genes. Broadly…

Q: 3. List the stages of development once the egg is fertilized.

A: Animal development is the process in which a fertilized egg undergoes cell division and cellular…

Q: Your cousin just had twins. She tells you that twinning occurs when two sperm fertilize the same…

A: Proliferation (or multiplication or rearing) is the natural cycle by which new individual life forms…

Q: If there are 400M ovum/egg cells in a 1point woman's body, how many primary oocytes are there during…

A: An oocyte is essentially an immature egg. Oocytes becomes mature within follicle. These follicles…

Q: 1.Define a life cycle. 2. Explain briefly the difference between asexual and sexual reproduction. 3.…

A: Cells are the elemental unit in level of body organization . Numerous cell combine to form tissue…

Q: Outline the events of oogenesis. Why is oogenesis a significant process for egg production

A: A small group of cells in the outer region of the cortex are developed into millions of primordial…

Q: 1. Shortly after implantation, tissue from the embryo normally grows into the wall of D с. C B d. A…

A: The given figure is that of female human reproductive system .

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.