Insulin that is released by pancreatic cells plays a role in regulating blood gl
ID: 98069 • Letter: I
Question
Insulin that is released by pancreatic cells plays a role in regulating blood glucose by a) binding to glucose and breaking them down b) blocking cells from absorbing glucose c) by breaking down long polymers of carbohydrates into single glucose molecules d) acting as a ligand and stimulating receptors on the cell membrane that turns on a cascade of events and trigger synthesis of GLUT proteins which then takes glucose into cells Dominant alleles (of a gene) are always more common than recessive alleles in a population. a) true b) false Two pea plants are crossed. One plant has purple flowers and the other has white flowers. ALL of the offspring have purple flowers in F1. Which of the following conclusions is likely to be incorrect? a. both parents are homozygous b. purple is dominant over wrinkled c. one parent is homozygous, the other is heterozygous d. all of the offspring are heterozygous A color blind man is soon to be a father and the mother of the child is normal for this trait and for this trait either. What is the probability if the child is a male inheriting this trait from the father a) The probability is 25% b) The probability is 50% c) The probability d) The probability is 100% e) The probability is zeroExplanation / Answer
45. d) cholesterol
A ribose is an example of pentose sugar. It is a monosaccharide with five carbon atoms. Glucose (C6H12O6) is a monosaccharide with six carbon atoms.
Cholesterol (C27H46O) is a type of sterol which contains four steroid rings with a hydroxyl group, two methyl groups, and a hydrogen tail.
46. Nucleus - C) contains DNA (genetic material)
47. Ribosomes- E) translation (protein synthesis)
48. Golgi body- B) packages protein for release
49. Endoplasmic reticulum- A) functions as a transport system in a cell
50. G proteins- D) composed of receptors in cell membranes
51. a) True
Splenda is synthesized by the selective chlorination of sucrose in a multistep process. During chlorination, the three hydroxyl groups of sugar are substituted by chlorine atoms.
52) a) disrupt normal gut microflora (bacteria).
Artificial sweeteners increase the production of those gut bacteria that are more efficient in converting the digested food into fat which may cause diabetes II and obesity.
55) a. purple is dominant over wrinkled.
Here, we are considering only one character i.e flower color which can be either purple (dominant character) or purple (recessive character).
Both the parents, purple flowers and white flowers, must be homozygous dominant to produce only purple flowers in F1 generation.
Parents: Purple flowers X white flowers
PP pp
Gametes: P p
Offspring: Pp - heterozygous F1 generation
( all purple as dominant gene P masks the effect of recessive gene p)
If one parent is homozygous, say plant with purple flowers has PP genotype and other is heterozygous, say plant with white flowers has Pp genotype, then offsprings produced have Pp and PP genotype i.e offsprings have purple color flowers.
Hence, all the other options are correct.
56) e. The probability is zero.
Let us suppose, the XC allele is the diseased gene responsible for causing the trait.
Then, according to the information given
Parents: Color blind father X normal mother
Genotype: XCY XX
Gametes: XC and Y X
Offsprings: XCX (color blind daughter) and XY (normal son)
From the above cross, it is cleared that all the sons will be normal and all the daughter will be carriers of the trait. The son will inherit a normal gene from his father and thus, the probability is zero.
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