Answer: c. nephron
Explanation: The nephron is the functional unit of the kidney, which actively filters blood and generates urine. The nephron is made of the renal corpuscle and renal tubule. Cortical nephrons are located within the renal cortex, whilst juxtamedullary nephrons are observed inside the renal cortex near the renal medulla.
Answer:
The organism is able to ferment mannitol.
Explanation:
Covelent
<span>When electrons are transferred then ionic bond is formed and when electrons are shared then covalent bond is formed.</span>
Answer:
(Cells in metaphase/total number of cells) x 24 hours = hours in metaphase
Explanation:
You need to find the proportion of the cells in metaphase to the total number of cells, and multiplying by 24 hours will then give you the number of hours spent in metaphase.
For a more concrete example:
11 metaphase/200 total = .055
.055 x 24 hours = 1.32 hours in metaphase
Answer:
Evidence for evolution comes from many different areas of biology:
Anatomy. Species may share similar physical features because the feature was present in a common ancestor (homologous structures).
Molecular biology. DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.
Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.
Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).
