Which of the following provides the specificity of the CRISPR/Cas gene editing system?
A. an antibody-like region of the Cas nuclease
B. the guide RNA (crRNA) carried by the Cas nuclease
C. the amino acids at the amino terminus of the Cas nuclease
D. the amino acids at the carboxyl terminus of the Cas nuclease
Answer: B
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Matching. Choose the one most appropriate answer
for each. 1. ___ nephron 2. ___ aldosterone 3. ___ tubular secretion 4. ___ ADH 5. ___ conduction 6. ___ convection 7. ___ pilomotor response 8. ___ ectothermic 9. ___ evaporation 10. ___ glomerular filtration 11. ___ hemodialysis 12. ___ hypothermia 13. ___ heterothermic 14. ___ radiation 15. ___ tubular reabsorption A. do not maintain the same body temperature at all times; are capable of internal heat production B. heat energy is released to the air when liquid water converts to gaseous form C. bulk flow of protein-free plasma from capillaries into Bowman’s capsule D. animals with more or less constant body temperature E. emission of heat from body surface when environmental temperature is lower than the body temperature F. movement of ions from peritubular capillaries into nephron tubules G. loss of too much body heat H. heat next to the body’s surface undergoes mass transport by air or water currents I. active and passive transport of solutes from peritubular capillaries into the glomerular capillaries J. a long, slender, tubular unit in the vertebrate kidney that forms urine K. body temperatures rise and fall with environmental changes L. secreted by adrenal glands; influences sodium reabsorption M. passive transport of water; active and passive transport of solutes out of the nephron into peritubular capillaries N. heat energy is transferred from high to low temperature regions due to collisions between adjacent molecules O. released from the posterior lobe of the pituitary in response to hypothalamic signals P. toxic substances are extracted from blood circulating in cellophane tubes suspended in a warm-water bath Q. erection of hairs and feathers by smooth muscles in the skin
Glyoxysomes play an important role in the germination of fat-storing seeds and are considered to be specialized
A) peroxisomes. B) lysosomes. C) vacuoles. D) centrioles. E) ribosomes.
Which of the following variables would support the "damage accumulation theory of aging"?
A. Poor diet and exposure to the sun lead to cellular damage. B. Protein fibers become cross-linked as we age. C. Harmful metabolites accumulate over our lifetime. D. None of these support the damage accumulation theory of aging. E. All of these support the damage accumulation theory of aging.
Some of the signs of scarlet fever (scarlatina) are due to the production of (pertussis/pneumolysin/pyrogenic) toxin
What will be an ideal response?