Aweightlifter is using heavy weights in short bursts for a competition. because his muscle cells are not able to take in enough oxygen to make very much atp the weightlifter begins to get fatigue in his muscles. which of the following processes is most likely going on in the muscles of the weightlifter as he competes in his event?

a. as the cells run out of oxygen they switch to anaerobic respiration, which allows the cell to make small amounts of atp in the absence of oxygen.

b. the cells will never run out of oxygen if the weightlifter is breathing.

c. as the cells run out of oxygen, they die off gradually and the weightlifter's muscles have fewer contracting muscle cells.

d. as the cells run out of oxygen, they will continue to make the same amount of atp, since oxygen is not required to make atp.

Which of the following is not a defining characteristic of plants?

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.

In pea plants, the allele for inflated pod seed, i, is dominant over the allele for constricted pod seed, i. the punnett square shows a cross for this trait. which offspring will be homozygous dominant