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The type of fracture that occurs in osteoporosis:
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Ch. 3 Cells: The Living Units
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732
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TOC.tableOfContents
- Ch. 1 The Human Body: An Orientation25
- Ch. 2 Chemistry Comes Alive24
- Ch. 3 Cells: The Living Units24
- Ch. 4 Tissue: The Living Fabric19
- Ch. 5 The Integumentary System12
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System25
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue23
- Ch. 12 The Central Nervous System25
- Ch. 13 The Peripheral Nervous System and Reflex Activity30
- Ch. 14 The Autonomic Nervous System16
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System26
- Ch. 17 Blood27
- Ch. 18 The Cardiovascular System: The Heart25
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues16
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Non è quello che usi tu?Cambia libro di testo
Capitolo 3, Problema 13
If DNA has a sequence of AAA, then a segment of mRNA synthesized on it will have a sequence of:
a. TTT
b. UUU
c. GGG
d. CCC
Guida verificata passo dopo passo1
Understand that during transcription, mRNA is synthesized using the DNA template strand by complementary base pairing, where adenine (A) in DNA pairs with uracil (U) in RNA, thymine (T) pairs with adenine (A), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C).
Identify the given DNA sequence: AAA. This means the DNA template strand has three adenine bases in a row.
Apply the base pairing rules to find the complementary mRNA sequence: each adenine (A) in DNA pairs with uracil (U) in mRNA.
Write the mRNA sequence by replacing each A in the DNA with U in the mRNA, resulting in UUU.
Compare the mRNA sequence to the answer choices and select the one that matches the sequence UUU.
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DNA to mRNA Transcription
Transcription is the process where an mRNA strand is synthesized from a DNA template. During this process, RNA polymerase reads the DNA sequence and creates a complementary RNA strand, replacing thymine (T) with uracil (U) in RNA.
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Percorso guidato
04:01
1) Elongation of Transcription
Base Pairing Rules in Transcription
In transcription, adenine (A) in DNA pairs with uracil (U) in mRNA, thymine (T) pairs with adenine (A), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C). This ensures the mRNA sequence is complementary to the DNA template.
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Percorso guidato
07:44Overview of Transcription
Role of Uracil in RNA
RNA contains uracil (U) instead of thymine (T), which is found in DNA. This difference is crucial because during transcription, uracil pairs with adenine, allowing mRNA to carry the genetic code from DNA to the ribosome for protein synthesis.
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Percorso guidato
04:191) RNA Processing
Pratica correlata
Domanda del libro di testo
A physiologist observes that the concentration of sodium inside a cell is decidedly lower than that outside the cell. She also observes that there is a small leakage of sodium into the cell. What cellular process prevents the sodium concentration gradient from disappearing?
a. Osmosis
b. Diffusion
c. Primary active transport
d. Secondary active transport
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Domanda del libro di testo
A nerve cell and a lymphocyte are presumed to differ in their:
a. Specialized structure
b. Suppressed genes and embryonic history
c. Genetic information
d. a and b, e. a and c
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Cells lining the trachea have whiplike motile extensions on their free surfaces. What are these extensions, what is their source, and what is their function?
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Domanda del libro di testo
The RNA species that travels from the nucleus to the cytoplasm carrying the coded message specifying the sequence of amino acids in the protein to be made is
a. mRNA
b. tRNA
c. rRNA
d. all of these
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Domanda del libro di testo
A pancreas cell makes proteins (enzymes) that it releases to the small intestine. Which of the following best describes the path of these proteins from synthesis to exocytosis at the pancreatic cell's plasma membrane (PM)? a. Golgi → rough ER → PM, b. smooth ER → Golgi → lysosome → PM, c. rough ER → Golgi → PM, d. nucleus → Golgi → PM.
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