GED Science Test #4
The type of light used in a lab experiment to measure the rate at which plants grow under artificial light is which type of variable?
An independent variable is a factor that the scientists have control over in an experiment. The output or effect is represented by a dependent variable. The light is an independent variable because it is controlled by the experimenters.
How much percentage of the total energy is produced by biofuels?
According to the pie chart, 9% of all energy is produced from renewable resources. The remaining 9% is then split up into distinct categories. 21% of all renewable energy is made up of biofuels. The graph demonstrates that 21% of the 9% overall usage is made up of biofuels. Find 21% of 9% by multiplying them together to determine the proportion of total energy consumption that biofuels represent:
21% * 9%
= 0.21 * 0.09
= 0.0189
= 1.89%.
A group of computers that are linked together in order to share resources is known as a computer network. The amount of time it takes for a packet of data to go from one specified place to another is referred to as network latency. Minimizing network latency is crucial for computer networks to function properly. Which of the subsequent modifications would reduce network latency? To determine latency, apply the following equations:
As stated in the first equation, propagation delay and serialization delay together makeup network latency; therefore, if you wish to reduce network latency, you must reduce one of these delays. In a fraction, the numerator is the number above the line, and the denominator is the number below the line; increasing the numerator will increase the value of the fraction while increasing the latter will decrease it. Only a reduction in packet size will result in a reduction in a numerator, so to reduce network latency, you must either increase a denominator or decrease a numerator.
In what process is the diagram depicted?
Cells produced during meiosis are different from their parent cells. The created cells in the diagram do not correspond to the starting cell. The meiosis process is seen in the diagram.
Which of the following best describes an organelle's role in a eukaryotic cell?
The only organelle that is correctly defined is the mitochondria. The electron transport chain, one of the primary cell respiration processes, takes place in the mitochondria to create ATP, which is a type of energy. Mitochondria are referred to as the "powerhouses" of the cell as a result.
In the solar system, there are two different kinds of planets: terrestrial and jovian. Rocky planets or inner planets are other names for terrestrial planets. They are closer to the sun, smaller in size, denser, largely made of rock and metal, have fewer moons, and no rings. The outer gas giants are another name for jovian planets. They are farther from the sun, greater in size, less dense, largely formed of gases, and frequently contain ring systems and numerous moons. The term "ice giants" also refers to a subcategory of outer gas giants. Ice giants have a smaller size, less mass, less gas, and more rock and ice than other types of giants. Ice giants are Neptune and Uranus. What can be concluded about the distinctions between Neptune and Saturn from this passage?
Note that Saturn has rings and is the sixth planet from the sun. It is obvious from the description that Saturn would be categorized as a Jovian planet. Also mentioned in the paragraph is the fact that Neptune is an ice giant, a sort of Jovian planet. According to the passage, ice giants are similar to Jovian planets in every way except for their smaller size, lower mass, lack of gas, higher concentration of rocks, and increased amounts of ice. Therefore, it can be concluded that Neptune is smaller, rockier, and icier than Saturn.
When two or more atoms form an ionic bond, which of the following is exchanged?
When one atom donates an electron from its outer shell, known as a valence electron, to another atom, two oppositely charged atoms are formed.
Animals that only eat plants are referred to as:
Primary producers in an ecological food chain are those that photosynthesize and use sunlight as an energy source; they are nearly entirely plants. Primary producers provide energy to primary consumers. Primary consumers feed secondary consumers, and secondary and secondary consumers feed tertiary consumers.
In the table, there is information regarding the makeup of ocean water. What claim is backed up by the information in this table?
Magnesium is present in the ocean at a higher concentration than potassium (0.038% vs. 0.135%), as demonstrated by this direct comparison. The data reported have nothing to do with the use of bromine as a disinfectant. The significance of Carbon's involvement in the ocean is also unrelated to the information provided. Chlorine's concentration (1.9%) is higher than sodium's and sulfur's combined concentrations (0.0885% + 1.05% = 1.1385%).
Which of the following is a conclusion about amphibians?
Since the triangle is enclosed by the circle, all vertebrates are also amphibians, but not all vertebrates are amphibians since the triangle is not enclosed by the circle.
The location of protein synthesis within a cell is an RNA-based organelle, which one is it?
The cytoplasm of the cell and the rough endoplasmic reticulum surface are where ribosomes, which are made of a special type of RNA called rRNA, are found. Here, proteins are constructed from amino acids piecemeal using DNA-copied instructions.
Pea plants are known for their purple flowers, yellow seeds, and inflated seed pods. White blooms, green seeds, and restricted seed pods are recessive features. What percentage of the progeny will have yellow flowers if a plant that is homozygous dominant for flower color is crossed with a plant that is heterozygous for flower color?
According to the question, one plant is homozygous dominant for all three features, which means it has two dominant alleles for each character. This plant's genotype can be written as AABBCC. For flower color, the other parent is heterozygous, which means it has one dominant and one recessive allele; this genotype is written as Aa. There are two genotype results when an AA plant crosses with an Aa plant: AA and Aa. No progeny would be expected to display the recessive flower color because the kids will always get at least one dominant allele.
In 1957, which country launched the first satellite into space?
Germany pioneered rocket technology, and the United States became the first country to land a man on the moon in 1969.
The birds in the image can distinguish food from the deer's fur. The birds won't be attacked by the deer. In actuality, the deer willingly permits the birds to roost there. What name best describes the interaction between the deer and the birds?
A tight interaction between creatures of various species in which at least one of the organisms benefits is referred to as symbiosis. The association may be advantageous to the other organism as well, or it may have no effect on it or hurt it.
Which statement regarding the frog is accurate?
Since the frog is outside of the rectangle, it is not a member of the Salamandridae family. The frog is not a non-vertebrate because it falls within the circle of vertebrates. Given the way the information is presented, it is impossible to draw the conclusion that it is more similar to most tetrapods than to most newts. Due to its location within the amphibian triangle, the frog is a particular species of amphibian.
Plants and animals can be breed to have useful characteristics. Humans can alter an organism's genotype by choosing which animals are permitted to breed. What did Dave call this type of evolution in organisms?
To distinguish this process from natural selection, Dave coined artificial selection. Natural selection is how desirable features in living organisms create the most offspring. Natural selection causes changes in the features of living things over time, as creatures that are best suited for reproduction are more likely to pass on their genes than organisms that are less well suited. On the other hand, Artificial selection is the reproduction of organisms with advantageous characteristics as a result of human influence. Natural selection is described by the phrase "survival of the fittest," while hybridism refers to a creature of mixed origin that isn't necessarily bred to have desirable qualities.
Which of the following organelles is absent from the cells of animals but present in those of plants?
The requirement for photosynthesis in plant cells makes this one of the key distinctions between animal and plant cells. The chloroplasts, which contain the pigment chlorophyll, are where photosynthesis occurs. Plant cells have chloroplasts, which are absent from animal cells.
In a chemical experiment, 1025 milliliters of water are combined with 175 milliliters of motor oil in a beaker.
1000 milliliters Equals 1 liter
How many liters of liquid remains in the beaker after adding the water?
To begin, combine the two liquids:
1200 mL = 1025 + 175 mL
Divide by 1000 to convert milliliters to liters:
1200 ÷ 1000 = 1.2 L
Except for one, the rate of a chemical reaction is determined by all of the following factors.
The rule of conservation of mass (or matter) specifies that no mass is lost in a chemical reaction, the pace at which it happens is unaffected by the quantity of mass lost.
A student hypothesizes that ingesting a teaspoon of raw honey will keep pollen-allergic people from sneezing. She conducts an experiment to verify her theory. What's the name of the dependent variable?
In a scientific experiment, an independent variable is a variable that is altered or manipulated in order to assess the effects on the dependent variable. In this scenario, the student is in charge of the honey to see how it affects sneezing. Because it "depends" on the independent variable, it is called dependent.