Answer:
Which phase does not have a check point? S
Explanation:
Option C is correct.
Pine trees are part of the family Pinaceae. Sea urchins are from class <span>Echinoidea. These two organisms are very different in many ways. Pine trees have exposed seeds or sexually reproduce. They are coniferous. Sea urchins, well they don't produced seeds, they reproduce through external fertilization. Sea urchins are omnnivorous. </span>
Answer: A
Explanation:
Oxygen makes up another 20 to 21 percent of our atmosphere. It's essential for life on Earth, and interestingly enough, it is poisonous when highly concentrated. Our concentration of 20 to 21 percent seems just right.
Answer:
Hailey, a local registered dietitian, frequently joins Aaron during his cooking classes at the local community hospital. Hailey often points out the common food sources of soluble fiber during Aaron's one hour cooking class. When working with patients and their families in their hospital rooms, she often explains to how common foods containing soluble fiber can play a major role in reducing the risk of having another heart attack. For this evening's cooking class, Hailey set up a display of five common items on a table and asked for a volunteer to select the ones which provide soluble fiber. During the cooking class, Jeff offered to try his hand at choosing the items which provide soluble fiber. Jeff should select all of the following items except:
canola oil
Explanation:
Canola oil contains fatty acid rather than fiber which Jeff is looking for among the food staples presented to him
Answer:
5. The correct answer would be an option A. ova
Note: I assume that all the samples are of human origin.
DNA (deoxyribonucleic acid) content of somatic cells of humans consists of 46 chromosomes or 23 pairs of chromosomes. Gametes (sperm or ova) are haploid cells produced by the process of meiosis and contain half the number of chromosomes found in parent cell. Hence, they contain 23 chromosomes.
6. The correct answer would be an option J.
Sperm formation or spermatogenesis is the process by which spermatozoa (haploid gamete) is produced from germ cell with the help of meiotic division.
Meiosis results in the formation of four haploid (n) cells from single diploid (2n) parent cell. Here, 2n is given as 8 so, n would be equal to 4.
Meiosis I results in the formation of two secondary spermatocyte cells (both haploid or 4 chromosomes in this case) from single primary spermatocyte (diploid or 8 chromosome in this case).
Both the secondary spermatocytes undergo meiosis II to produce 4 spermatids (each haploid or 4 chromosome in this case). Spermatids differentiate and mature into spermatozoa.
