1) Osmosis is the passive movement of water but it follows almost completely opposite laws of physics when compared to the diffusion of ions or other small particles. - FALSE
2) Dividing cells must pass through the phases of mitosis the following order: Prophase, Metaphase, Anaphase, and Telophase. - TRUE
3) DNA transcription is another word for DNA replication. - FALSE
4) The glycocalyx is composed of glycolipids, glycoproteins and cholesterol molecules that are displayed on the outside surface of the plasma membrane. TRUE
5) Interstitial fluid represents one type of extracellular material. - TRUE
6) The speed of individual particle diffusion is influenced by temperature and particle size. TRUE
7) Concentration differences cause ionic imbalances that polarize the cell membrane, and active transport processes. TRUE
8) A red blood cell placed in pure water would swell and burst.- TRUE
We review the current state of knowledge of quantified impacts of invasive alien plants on water quality, with a focus on South Africa. In South Africa, over 200 introduced plant species are regarded as invasive. Many of these species are particularly prominent in riparian ecosystems and their spread results in native species loss, increased biomass and fire intensity
and consequent erosion, as well as decreased river flows. Research on the impact of invasive alien plants on water resources has historically focused on water quantity. However, although invasive alien plants also affect the quality of water, this aspect has not been well documented. Alien invasive plants increase evaporation rates, and reduce stream flow and dilution
capacity. The biomass inputs of alien invasive plants, especially nitrogen fixers such as Acacia spp., alter nutrient cycles and can elevate nutrient concentrations in groundwater. Alien plant invasions alter the fire regimes in invaded areas by changing the size, distribution and plant chemistry of the biomass. More intense fires increase soil erosion and thereby decrease
<span>water quality. In contrast to riparian invasions, aquatic invasive plants have been more extensively studied in South Africa and their impacts on water quality have been relatively well monitored. Water quality in South Africa is rapidly deteriorating, and all factors that influence this deterioration need to be taken into account when formulating actions to address the problem. The changes in water quality brought about by alien plant invasions can exacerbate the already serious water quality problems.</span>
The correct answer is option 3, that is, the muscular system, to extend, flex, and rotate the muscles with smooth, and coordinated effort.
The musculoskeletal system provides support, form, movement, and stability to the body. It comprises the bone of the skeleton, cartilage, muscles, ligaments, tendons, joints, and other connective tissue, which holds and supports organs and tissues together.
The flexing, extension, and rotation of the muscles with smooth and coordinated effort makes sure the movement of fluid in the human body.
