What is gastrulation Study guides, Class notes & Summaries
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bio 116 exam 4 | questions and answers 2023/24
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bio 116 exam 4 | questions and answers 2023/24 
 
In animal development, which of the following best describes the process of cleavage? - Mitosis 
What are the cells created by cleavage called? - Blastomeres 
Which of the following are the three germ layers contained in the gastrula? - Ectoderm, mesoderm, endoderm 
Which of the following stages of development is defined by the three embryonic tissue layers (ectoderm, mesoderm, and endoderm)? - Gastrula 
What happens to a cell during the ...
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ANAT0001: Introduction to Anatomy and Development (A+ Guaranteed) 2024.
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what is oviparity? correct answers eggs are laid, with little or no embryonic development in the mother with either internal/external fertilisation 
- found in invertebrates, fish amphibians, reptiles, birts and monotreme animals 
 
what is ovoviviparity? correct answers eggs retained in mother's body until ready to hatch, with internal fertilisation and young are born lice 
- no placental connection to mother 
- found in invertebrates, fish, amphibians and reptiles 
 
what is viviparity? corre...
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USABO Practice Correctly Answered Questions | UpToDate | Already Graded A+
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What enzyme does HIV use to convert RNA to DNA? 
: Reverse Transcriptase 
The promoter region of a prokaryotic gene is located ______ to the gene and is the 
binding site for ______. 
: 5'...RNA polymerase 
Which of the following is TRUE of prokaryotes? 
I. Simultaneous transcription and translation 
II. Presence of intron sequences 
III. Circular DNA 
: I and III only 
Integral transmembrane proteins are proteins imbedded in the cell membrane. Which of 
the following amino acids would you...
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ANAT0001: Introduction to Anatomy and Development (A+ Guaranteed) 2024.
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what is oviparity? correct answers eggs are laid, with little or no embryonic development in the 
mother with either internal/external fertilisation 
- found in invertebrates, fish amphibians, reptiles, birts and monotreme animals 
what is ovoviviparity? correct answers eggs retained in mother's body until ready to hatch, with 
internal fertilisation and young are born lice 
- no placental connection to mother 
- found in invertebrates, fish, amphibians and reptiles 
what is viviparity? correct...
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MY BIOL 204 EMBRYOLOGY DEVELOPMENT TEST QUESTIONS AND ANSWERS
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comparative morphology 
looking at anatomical characters (for example eyes, lungs, bones, etc) and seeing what is shared and what differs 
 
 
 
in what ways can anatomical characters differ? 
1) function 
2) form 
3) genetic aspects (evolutionary history) 
 
 
 
 
homologous structures 
structures that share a common ancestry (ex: forelimbs in tetrapods) 
 
 
 
analogous structures 
structures that share a similar (and precise) function (ex: bat wings + bird wings, woodpecker tongue + aye aye f...
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ABCP BOARD REVIEW QUESTIONS & ANSWER SOLVED 100%
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What good substances cross the placental membrane? - Answer O2, CO2, H2O, bilirubin, maternal serum proteins, RBc, IgG, IgA 
 
What harmful substances cross the placental membrane? - Answer 1) viruses: rubella, HIV, measles, oral conraception, WARFARIN, DILANTIN, Xanax, cocaine, heroin, RH-antibodies 
 
What does not cross the placental membrane? - Answer maternal chplesterol, Insulin, Succinylcholine, HEPARIN, bacteria 
 
Which vessel supplies blood to the fetus? - Answer umbilical vein 
 
Whic...
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USABO PRACTICE EXAM WITH GUARANTEED ACCURATE ANSWERS
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What enzyme does HIV use to convert RNA to DNA? - ACCURATE ANSWERS Reverse Transcriptase 
 
The promoter region of a prokaryotic gene is located ______ to the gene and is the binding site for ______. - ACCURATE ANSWERS 5'...RNA polymerase 
 
Which of the following is TRUE of prokaryotes? 
I. Simultaneous transcription and translation 
II. Presence of intron sequences 
III. Circular DNA - ACCURATE ANSWERS I and III only 
 
Integral transmembrane proteins are proteins imbedded in the cell memb...
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CMMB 403 Midterm questions and answers rated A+ 2024/2025
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CMMB 403 Midterm 
Two major changes of the mid-blastula transition - correct answer 1. Changes in the length of the cell cycle 
2. Activation of zygotic genes 
 
Key aspects of gastrulation (3) - correct answer 1. Blastula turns into gastrula 
2. Formation of blastopore 
3. Germ layers move into their final positions 
 
What is a blastopore - correct answer Opening of central cavity in embryos 
 
Key aspects of organogenesis (3) - correct answer 1. Gastrula turns into neurula (once you see ...
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BIO 172 Pre-Questions and Answers with Certified Solutions
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BIO 172 Pre-Questions and Answers 
 
with Certified Solutions 
 
A spermatheca 
A. Is a component of the male reproductive system used to create male gametes 
B. Is a component of the male reproductive system used to store male gametes 
 
C. Is a component of the male reproductive system used to sort viable male gametes from non- 
viable male gametes 
 
D. Is a component of the male reproductive system used to deliver male gametes to females 
E. Is a component of the female reproductive system u...
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BIO 172 Pre- Questions with Complete Correct Answers | Grade A+
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A spermatheca 
A. Is a component of the male reproductive system used to create male gametes 
B. Is a component of the male reproductive system used to store male gametes 
C. Is a component of the male reproductive system used to sort viable male gametes from 
non-viable male gametes 
D. Is a component of the male reproductive system used to deliver male gametes to females 
E. Is a component of the female reproductive system used to store male gametes 
Ans: E. Is a component of the female repr...
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