What cell synthesizes and secretes proteins? The endoplasmic reticulum is an organelle that is responsible for the synthesis of lipids and the modification of proteins. What cell makes ribosomes? Nucleolus What type of proteins are made by free ribosomes? Free and membrane-bound ribosomes produce different proteins. Whereas membrane-bound ribosomes produce proteins that are exported from […]
How do humans affect biodiversity negatively?
How do humans affect biodiversity negatively? The main threats facing biodiversity globally are: destruction, degradation and fragmentation of habitats. reduction of individual survival and reproductive rates through exploitation, pollution and introduction of alien species. What positive impacts do humans have on ecosystems? Humans affect the environment in positive and negative ways. Cutting down trees and […]
What are the three main characteristics of soil?
What are the three main characteristics of soil? The particles that make up soil are categorized into three groups by size – sand, silt, and clay. Sand particles are the largest and clay particles the smallest. Most soils are a combination of the three. The relative percentages of sand, silt, and clay are what give […]
What are the three age structure categories?
What are the three age structure categories? And while every population pyramid is unique, most can be categorized into three prototypical shapes: expansive (young and growing), constrictive (elderly and shrinking), and stationary (little or no population growth). Let’s take a deeper dive into the trends these three shapes reveal about a population and its needs. […]
What is the distance for 1 wavelength?
What is the distance for 1 wavelength? Wavelength is one way of measuring the size of waves. It is the distance between two corresponding points on adjacent waves, usually measured in meters. The wavelength of a transverse wave can be measured as the distance between two adjacent crests. Is a full wavelength antenna better? A […]
How do we keep our organ system healthy?
How do we keep our organ system healthy? Seven Ways to Keep Your Organs Healthy Stay hydrated. Water helps kidneys remove waste from blood, so it’s always a good idea to stay hydrated by drinking at least four to six glasses per day. Eat a balanced diet. Exercise consistently. Be careful with supplements and over-the-counter […]
What force must balance with the buoyant force in order for an object to float?
What force must balance with the buoyant force in order for an object to float? The buoyant force is always present whether the object floats, sinks, or is suspended in a fluid. Archimedes’ principle states that the buoyant force on an object equals the weight of the fluid it displaces. Specific gravity is the ratio […]
What are 2 ways that minerals form?
What are 2 ways that minerals form? The four main categories of mineral formation are: (1) igneous, or magmatic, in which minerals crystallize from a melt, (2) sedimentary, in which minerals are the result of sedimentation, a process whose raw materials are particles from other rocks that have undergone weathering or erosion, (3) metamorphic, in […]
How are tendons attached to bones?
How are tendons attached to bones? The tendon is attached to the bone by collagenous fibres (Sharpey fibres) that continue into the matrix of the bone. How long does it take for tendons to attach to bone? By 26 weeks, continuity between the collagen fibres of the tendon and the surrounding bone was observed throughout […]
What is the difference between a quantitative and qualitative study?
What is the difference between a quantitative and qualitative study? Quantitative research deals with numbers and statistics, while qualitative research deals with words and meanings. Quantitative methods allow you to test a hypothesis by systematically collecting and analyzing data, while qualitative methods allow you to explore ideas and experiences in depth. Is age a categorical? […]