The second option is correct. Carbohydrate digestion initiates in the mouth, while protein digestion begins in the stomach. Specifically, carbohydrate breakdown starts in the mouth through mechanical chewing and the enzyme salivary amylase present in saliva. In contrast, protein digestion takes place in the stomach where enzymes such as pepsin (from the stomach), trypsin, and chymotrypsin (from the pancreas) act to decompose the food proteins into polypeptides and progressively into amino acids.
Tissue refers to a collection of cells that work together to fulfill a shared function. I hope this information is helpful!
During the reproductive cycle of a female pig, a larger quantity of eggs are released in one ovulation cycle, which explains why they typically have more offspring. The sire of the litter will always be the same animal, since fertilization occurs within a few hours of egg release.
This concept also applies to humans, where typically only one egg is released, except in the case of fraternal twins, which involve two eggs that are fertilized by two separate sperms from the same father.
Answer:
Edmentum's sample answers
Explanation:
- Part A: The illustration of Archaea bacteria shown in the video indicated that this organism consists of one cell with a defined boundary. Scientists are aware that it reproduces by transferring genetic material, as evidenced by the presence of Archaea's genes in our modern DNA.
- Part B: Both cell types exhibited a distinct boundary. However, bacterial cells were shaped like rods, while human cells appeared round. Human cells contained a clearly defined nucleus along with other cellular structures. Conversely, bacteria had a darkened region at the center that did not constitute a true nucleus. Furthermore, bacteria are single-celled, whereas humans are multicellular organisms. Bacteria belong to the prokaryote category; human cells fall under the eukaryote classification.
- Part C: They thrive in extremely hot conditions, necessitating mechanisms to regulate their internal temperatures.
- Part D: Does the gene EEF1 ALPHA1 lend support to cell theory? Justify your answer
The EEF1 ALPHA1 gene does support cell theory, which asserts that all living organisms consist of cells. As all living beings carry this gene that traces back to an organism existing billions of years ago, it seems logical to conclude that life on Earth emerged from the earliest life forms. This perspective explains the universal cellular composition of all life forms on our planet.
