jahanvirajpal2005

Sickle-cell anemia is caused by a recessive mutation in the hemoglobin gene. However, heterozygote Individuals also show a small percentage of sickled red blood cells. What type of inheritance pattern in this example of? a) Incomplete dominance b) Polygenic inheritance c) Sex linked d) Chromosomal nondisjunction

Nitrous Oxide (N2O) is also known as _________ .

Nervous system

Label the image of the neuron with the correct term

- Node of Ranvier                                                                   - Axon

- Schwann Cell                                                                       - Axon Terminals

- Myelin Sheath                                                                     - Dendrites

- Cell Body

 Aspirin is ______ .  

Defects in attachment of a chromosome to thespindle:

a. Decrease DNA polymerase processivity.

b. Activate sister chromatid separation.

c. Block activation of the anaphase promoting complex.

d. Activate exit from mitosis.

e. Promote transition from G1 to S phase.

Explain your answer.

Hemophilia is an X-linked recessive trait in humans. Consider amale with hemophilia, he has children with a female who does nothave hemophilia, but her father did have hemophilia. Create aPunnett square to show their genotypes, their gametes, and thepotential genotypes of their children. Since it is X-linked, youneed to show the alleles on the X and Y chromosomes, so useX^H for normal allele, X^h for hemophiliaallele, and Y.

Parents

Hemophilia A is an X-linked recessive mutation in humans. If a couple gives birth to a daughter with hemophilia A, which of the following may be the genotype of the parents? (2 points) a. XCXC and XCY b. XCXC and XcY c. XCXc and XcY d. XcXc and XCY

53. which process occurs during post-transcriptional modification of mRNA?

a. addition of a GTP cap

b. introns are cut out and removed

c. addition of poly-A tail

d. all of the above occur during post-trancriptional modification of mRNA

e. none of the above are correct

80. which of the following statements concerning propagation of action potential is incorrect?

a. saltatory conduction occurs in myelinated nerve fibers

b. during conduction by local current flow, there is a flow of current between the active and adjacent inactive area of the cell membrane, thereby decreasing the potential in the inactive area

c.the action potential jumps from one schwann cell to adjacent schwann cell in a myelinated fiber

d. saltatory conduction is faster than conduction by local current flow

e. conduction by local current flow is the method of propagation in unmyelinated fibers

The equations for free fall near the surfaces of Man and Jupiter Cs in meters, tin seconds) are: Mars, s = 1.86t/2; Jupiter, s = 11.44t/2• How long would it take a rock falling from rest to reach a velocity of 16.6 m/sec (about 60 km/h) on each planet?

Evaluate metabolism, anabolism, and catabolism. Then,distinguish them by providing an example for each of these and theend result for that reaction. Please include a credible referencefor this information.

1. An organism is described as 2n = 22.

a.

How many chromosomes are in one cell during G2 of interphase?

b.

How many chromatids per chromosome are in one meiotic cell during prophase 2?

c.

How many chromosomes are in one meiotic cell during telophase 2?

d.

How many chromatids per chromosome are in one mitotic cell during anaphase?