Which term refers to early embryonic cell divisions that do not create differentiated cells? Select one:...
Which term refers to early embryonic cell divisions that do not create differentiated cells? Select one: a. Indeterminate cleavage b. Determinate cleavage c. Radial cleavage d. Spiral cleavage
Homework Answers
a. indeterminate cleavage is the point where cell are not differentiated they are totipotent before this cleavage.After Determinate cleavage cells starts differentiating to form different tissues.
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Which term refers to early embryonic cell divisions that do not
create differentiated cells? Select one:...
which cells feature is common to normal human differentiated cells and to early embryonic human cells?...
which cells feature is common to normal human differentiated cells and to early embryonic human cells? how are gametes different from zygotes ?
no explaination is needed, I will give a thumb, thanks! 5. Which of the following is...
no explaination is needed, I will give a thumb, thanks!
5. Which of the following is descriptive of protostomes? a) spiral and indeterminate cleavage, blastopore becomes mouth b) spiral and determinate cleavage, blastopore becomes mouth c) spiral and determinate cleavage, blastopore becomes anus d) radial and determinate cleavage, blastopore becomes anus Which of the following is a diploblastic phylum of aquatic predators? a) Cnidaria b) Annelida c) Mollusca d) Arthropoda 7. Chordate pharyngeal slits appear to have functioned first as...
9. Cleavage refers to: (a) mitotic divisions that occur in the first 3 days of embryonic...
9. Cleavage refers to: (a) mitotic divisions that occur in the first 3 days of embryonic life (b) meiotic divisions that occur in the ovary (c) implantation of the blastocyst into the uterine wal (d) fertilization of an egg with a spernm 10. The following is true for dizygotic twins: (a) they are produced when a single egg is fertilized and later divides into two (b) they are genetically identical (c) they always have the same sex (d) they are...
A CD133+ cell indicates Select one: a. The cell is fully differentiated b. The cell is...
A CD133+ cell indicates Select one: a. The cell is fully differentiated b. The cell is cancerous c. The cell is a progenitor or stem cell d. The cell is undergoing mitosis This is all the information I have
Which of the ONE following characteristic is usually NOT TRUE of cancer cells and the tumors...
Which of the ONE following characteristic is usually NOT TRUE of cancer cells and the tumors that result? (i.e. all of the answers below are correct except for one-- select the incorrect answer!) Cancer cells do not migrate within the body. Cancer is usually caused by multiple acquired mutations. Cancer cells evolve over time--becoming more potent and more deadly. Cancer cells have dysregulated (uncontrolled) cell division activity. Some cancers are preventable. Question 9 (4 points) Which of the following of...
Examine the frog models 2-5 which represent the 2-cell, 4-cell,.. morula stages. During cleavage, the large...
Examine the frog models 2-5 which represent the 2-cell, 4-cell,.. morula stages. During cleavage, the large zygote (fertilized egg), a single cell, divides (by mitosis) into two cells (2-cell stage); these two cells divide again yielding four (4-cell stage); these four cells divide again yielding eight (8-cell stage); and so on. After dividing a number of times, the embryo is a solid ball of cells, the morula. Just like in the starfish, a cavity (the blastocoel) then becomes visible in...
which of the following is not part of a early cell theory? a) all organisms are...
which of the following is not part of a early cell theory? a) all organisms are multicellular. b) All organisms are made of one or more cells c) The sale is a fundamental unit of life d) all cells come from pre-existing cells part 2 which of the following features is not common in all cells ? a) cell walls b) ribosomes c) RNA abd DNA b) cytoplasm
Which of the following statements regarding embryonic stem (ES) cells are true? A. They can only...
Which of the following statements regarding embryonic stem (ES) cells are true? A. They can only generate a very limited number of cell types. B. They can theoretically give rise to all types of cells in an organism. C. They are highly specialized. D. They are pluripotent. E. Harvesting them from human embryos raises ethical and political issues.
A product that is differentiated with quality or reliability does which of the following: Select one:...
A product that is differentiated with quality or reliability does which of the following: Select one: a. Lasts longer b. A better “job” c. Looks better than other products d. Easy to find
Which of the following is true of B cells? Select one: a. They differentiate into macrophage...
Which of the following is true of B cells? Select one: a. They differentiate into macrophage b. They present antigens c. They are responsible for cell mediated immunity d. They secrete cytokines Suppose an individual has impaired histamine release from mast cells. This individual may have lower levels of which antibody class? Select one: a. IgA X c. IgE d. IgM Identify the component that is NOT part of innate immune defenses. Select one: a. skin b. cytotoxic T cells...
no explaination is needed, I will give a thumb, thanks!
5. Which of the following is descriptive of protostomes? a) spiral and indeterminate cleavage, blastopore becomes mouth b) spiral and determinate cleavage, blastopore becomes mouth c) spiral and determinate cleavage, blastopore becomes anus d) radial and determinate cleavage, blastopore becomes anus Which of the following is a diploblastic phylum of aquatic predators? a) Cnidaria b) Annelida c) Mollusca d) Arthropoda 7. Chordate pharyngeal slits appear to have functioned first as...
9. Cleavage refers to: (a) mitotic divisions that occur in the first 3 days of embryonic life (b) meiotic divisions that occur in the ovary (c) implantation of the blastocyst into the uterine wal (d) fertilization of an egg with a spernm 10. The following is true for dizygotic twins: (a) they are produced when a single egg is fertilized and later divides into two (b) they are genetically identical (c) they always have the same sex (d) they are...
Which of the ONE following characteristic is usually NOT TRUE of cancer cells and the tumors that result? (i.e. all of the answers below are correct except for one-- select the incorrect answer!) Cancer cells do not migrate within the body. Cancer is usually caused by multiple acquired mutations. Cancer cells evolve over time--becoming more potent and more deadly. Cancer cells have dysregulated (uncontrolled) cell division activity. Some cancers are preventable. Question 9 (4 points) Which of the following of...
Examine the frog models 2-5 which represent the 2-cell, 4-cell,.. morula stages. During cleavage, the large zygote (fertilized egg), a single cell, divides (by mitosis) into two cells (2-cell stage); these two cells divide again yielding four (4-cell stage); these four cells divide again yielding eight (8-cell stage); and so on. After dividing a number of times, the embryo is a solid ball of cells, the morula. Just like in the starfish, a cavity (the blastocoel) then becomes visible in...
Which of the following is true of B cells? Select one: a. They differentiate into macrophage b. They present antigens c. They are responsible for cell mediated immunity d. They secrete cytokines Suppose an individual has impaired histamine release from mast cells. This individual may have lower levels of which antibody class? Select one: a. IgA X c. IgE d. IgM Identify the component that is NOT part of innate immune defenses. Select one: a. skin b. cytotoxic T cells...
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