EASY 5 points
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Which type of molecular
movement requires energy?
A. active transport
B. diffusion
C. facilitated diffusion
Answer:
A. Active Transport
Explanation:
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The source of a sound moves away from the listener. Listener has the impression that the source is ________ in pitch and the frequency has_______.
A.) lower. Increased
B.) lower, decreased
C.) higher, decreased
D.) higher, increased
Doppler Effect is defined as the change of frequency of a sound or light wave produced by a moving source and a stationary observer. The waves when they move towards the object compresses.
The correct answer is:
Option B. lower, decreased
The Doppler effect can be explained as:
1. The listener will have the impression that the moving source is higher in the pitch as it moves away from the listener.
2. The frequency of the waves will be decreased because the time between the successive sound waves is lengthened or increased.
Therefore, the pitch will be lowered and the frequency will be decreased.
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Through what process can scientists artificially change the DNA code of organisms?
A) natural selection
B) gene pool
С) gene shuffling
D) genetic engineering
Answer:
D) Genetic engineering
Explanation:
It makes the DNA living organisms
Through the process of genetic engineering scientists can artificially change the DNA code of the organisms. Thus, the correct option is D.
What is Genetic engineering?Genetic engineering is also called as the genetic modification or genetic manipulation. Genetic engineering is the modification and manipulation of an organism's genes through the use of technology. It is a set of technologies which are used to change the genetic makeup of the cells, including the transfer of genes within the cells and across the species boundaries to produce improved or novel organisms.
Different types of genetic engineering include DNA extraction, through which DNA is extracted from an organism known to have the desired trait and sequence. Gene cloning includes the gene of interest which is located and copied in the DNA. Gene modification is the modification of the gene to express in a desired way through altering and replacing the gene regions.
Therefore, the correct option is D.
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Describe two ways in which the teeth of a sheep are different to those of a human.
Answer:
Sheep enamel hardness it weaker than human enamel, yet it is the same toughness.
Explanation:
Explain the difference between food-chain and ecosystem.Explain the difference between food-chain and ecosystem.
Answer:
A food chain shows the transfer of energy through a single chain of animals. For example, energy comes from the sun, a producer uses energy from the sun as food, a secondary consumer eats the primary consumer, a tertiary consumer eats the secondary consumer, and so on. An ecosystem contains many intertwining and interlocking food chains. Ecosystems contain both abiotic and biotic factors.
• Food chain is a chain of species and organisms where energy transferred from one trophic level to another.
• Level of energy transferred decreases as one move from one level to another.
• It is single directional transfer or flow of energy.
• All living species need energy for growth and survival
• Plants are consider producer since they make their food using sunlight, soil and other elements.
• Animals are consider consumers since they gain energy from eating other plants and animals.
Generally we have four Trophic level:
• Producers
• Primary consumers
• Secondary consumers
• Top consumers
Example:
• Vegetation→ Grasshoppers → Frog→ Snake → Eagle
• Plant → Frog → Snake → Peacock
• Interaction between living and non living component i.e. biotic and abiotic factor makes up an ecosystem.
• Biotic factor consists of plants, animals and decomposer.
• Abiotic factor consists of mountains, light, soil, air and water.
• Example: Forest is an terrestrial ecosystem it consist of plants and animal. A lake is an example of aquatic ecosystem aquatic plants and animals.
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The special ____________________________________ of the vegetation.
What are the 4 "agents" of weathering, erosion, and deposition?
Answer:
Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.
Explanation:
What are the two types of natural resources?
Answer:
the two types of natural resources are renewable natural resources and non renewable natural resources
In a multicellular organism, the lungs are responsible for exchanging gases with the organism’s environment. Which cellular structure performs the same task for a cell?
Answer:
This question lacks options; the options are:
A) chloroplast
B) mitochondrion
C) endoplasmic reticulum
D) plasma membrane
The answer is B. mitochondrion
Explanation:
The Lungs of multicellular organisms, as described in this question, is a respiratory organ that is involved with the INTAKE of oxygen needed for cellular respiration and EXPULSION of carbon dioxide out of the body, a process called GAS EXCHANGE.
This gaseous exchange function of lungs is carried out for the process of respiration which is carried out at the cellular level by MITOCHONDRION. Mitochondrion is an organelle in eukaryotic cells associated with the cellular respiration (release of energy).
The gaseous reactants (oxygen) and products (carbon dioxide) of cellular respiration is exchanged by the LUNGS.
The cellular structure performs the same task for a cell
B. mitochondrion
Mitochondria:The Lungs of multicellular organisms, as defined on this question, is a breathing organ this is concerned with the INTAKE of oxygen wanted for cell breathing and EXPULSION of carbon dioxide out of the body, a manner referred to as GAS EXCHANGE. This gaseous change feature of lungs is finished for the manner of breathing that is finished on the cell degree via way of means of MITOCHONDRION. Mitochondrion is an organelle in eukaryotic cells related to the cell breathing (launch of energy). The gaseous reactants (oxygen) and products (carbon dioxide) of cell breathing is exchanged via way of means of the LUNGS.
Thus correct option is B.
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The question is incomplete. The Complete question is:
In a multicellular organism, the lungs are responsible for exchanging gases with the organism’s environment. Which cellular structure performs the same task for a cell?
A) chloroplast
B) mitochondrion
C) endoplasmic reticulum
D) plasma membrane
(2,-2) and (0, -1)
linear equation
Answer:
y = -1/2x - 1
Explanation:
Slope-Intercept Form: y = mx + b
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Step 1: Define
(2, -2) random points
(0, -1) y-intercept
Step 2: Find slope m
[tex]m=\frac{-1-(-2)}{0-2}[/tex]
[tex]m=\frac{-1+2}{-2}[/tex]
[tex]m=\frac{1}{-2}[/tex]
[tex]m=\frac{-1}{2}[/tex]
y = -1/2x + b
Step 3: Write linear equation
y = -1/2x - 1
What is the main reason for using a data table collect data?
Answer:
Data tables help you keep information organized. If you're collecting data from an experiment or scientific research, saving it in a data table will make it easier to look up later. Data tables can also help you make graphs and other charts based on your information.
Explanation:
Explain what caused the existence of the dark-colored peppered MOTHS:)
Answer:
The moths adapted to the environment they were in which was heavily polluted and the spots helped it blend into the environment. It was in the UK somewhere I don't remember where though.
Explanation:
The peppered moth's evolution is an example of how air pollution during the Industrial Revolution caused directional color changes in the moth population.
What are the adaptation of dark-colored peppered moths?The genetic basis for color was eventually discovered. Moths inherited their color from their ancestors. Eggs from light moths became light moths, whereas eggs from dark moths became dark adults.
At that time, a manifestation of industrial melanism was the rise in the number of dark-colored moths.
The moths blended in with the severely contaminated environment they were in thanks to their markings, which helped them adapt to it. Although I can't recall where, it was in the UK.
Therefore, A mutation in one moth's DNA resulted in the dark color, and the mutant gene was passed on to all the moth's progeny.
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Which organ system collects, transfers, and processes
information?
Answer:
Its your nervous system. I searched it up because I was pretty sure it wasn't the Brain
Muscular- Provides movement, support, and heat production
Nervous- Collects, transfers, and processes information and directs short-term change in other organ systems
what is one treatment for cancer
Answer:
Some people with cancer will have only one treatment. But most people have a combination of treatments, such as surgery with chemotherapy and/or radiation therapy. You may also have immunotherapy, targeted therapy, or hormone therapy.
How do sink holes form
Sinkholes are formed when land collapses into cavities underground. A few causes of sinkholes are disturbance of soil (digging for example), water impoundment (dams and basins), and decline of water level (groundwater pumping and droughts).
Use your understanding of the phosphorus cycle to answer the questions provided.
Phosphorus cycles between living things and the
.
Answer:
soil
Explanation:
trust me
Answer:
Soil
Explanation:
I got it right
A harmful substance increases in concentration in organisms as it moves up trophic levels. This is called____. *
Sustainability
Ecological Succession
Biomagnification
Transpiration
what is primary function of fat
Answer:
Dietary fats are essential to give your body energy and to support cell growth. They also help protect your organs and help keep your body warm. Fats help your body absorb some nutrients and produce important hormones, too.
Explanation:
Answer:
to give the body energy
Explanation:
Which of the following is most likely to form when tectonic plates move away from each other?
Answer:
When two plates are moving away from each other, we call this a divergent plate boundary.
Answer:
fault
Explanation:
Which correctly lists the three types of rock particles that make up soil?
air, clay, and sand
clay, water, and silt
sand, clay, and silt
silt, water, and air
Answer:
Based on ur question the answer is C. Sand, clay and slit.
The answer based on others is D) Sand, clay and slit
Explanation:
Did the test and got a 100%
The rock particles that make up the soil are sand, clay, and silt.
What is soil?Soil is the topmost layer of the earth on which plants grow.
Soil is formed when large rock are broken down into smaller particles by human or natural agents such as wind, water and ice.
The types of soil include:
loamy soil sandy soil clayey soilThe most important soil for plant growth is loamy soil.
The rock particles that make up the soil are sand, clay, and silt.
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what does photosynthesis form in a leaf first
Explanation:
The first stage of photosynthesis is the light dependent reactions. These reactions take place on the thylakoid membrane inside the chloroplast. During this stage light energy is converted to ATP (chemical energy) and NADPH (reducing power).
The light-dependent processes make up the initial phase of photosynthesis. On the thylakoid membrane inside the chloroplast, several processes take occur. In this phase, light energy is transformed to ATP and NADPH, two chemical energies (reducing power).
What is thylakoid membrane inside the chloroplast?The light processes of photosynthesis are carried out by a system of connected internal membranes called thylakoid membranes in a chloroplast.
Numerous proteins and chlorophyll molecules can be found in each thylakoid membrane. Clusters of chlorophyll molecules are called photosystem.
Plants use chlorophyll pigments to absorb light energy and convert it to electrons, which are subsequently transmitted down a protein chain in the thylakoid membrane.
Therefore, thylakoid membrane inside the chloroplast in which photosynthesis form in a leaf first.
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A man digging the ground near a water body found that the soil was moist. As he
kept digging deeper and deeper he reached a level where all the space between
particles of soil and gaps between rocks were filled with water. The upper limit of
this layer is called ___________
(a) water level (b) water table (c) ground water (d) water limit
Answer:
the answer for this question is c
Long bones are filled with :
A.Sponge
B.Simple Tissue
C.Bone Marrow
D.Tendon
Answer:
ans is bone marrow anf that is c
What are the statements below describing?
1. Cells are the basic unit of life.
2. Cells come from other living cells.
3. All living things are made up of one
or more cells.
Answer:
all living organisms are made up cells
About how much DNA is inside every cells nucleus?
Explanation:
The haploid human genome contains approximately 3 billion base pairs of DNA packaged into 23 chromosomes. Of course, most cells in the body (except for female ova and male sperm) are diploid, with 23 pairs of chromosomes. That makes a total of 6 billion base pairs of DNA per cell.
Answer:
roughly 2 meters
Explanation:
what is an membrane carbohydrate chain?
Answer:
Carbohydrate Chains, or glycolipids/ glycoproteins, are chains found on the surface of the cell membrane that are made of carbohydrates + lipid (or) protein. The primary function of these chains is to recognize harmful cell.
Explanation:
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Carbohydrates are covalent linked to proteins (glycoproteins) or lipids (glycolipids) and also and important part of sell membranes , and function as adhesion and address loci for cells. The Fluid Mosaic Model describes membranes as a fluid lipid bilateral with floating proteins and carbohydrates.
Pea plant clones are giving different amounts of water for a three-week period. First pea plant receives 400 milliliters a day. The second pea plant receives 200 milliliters a day. The third pea plant receives 100 milliliters a day. The fourth pea plant does not receive any extra water; the plant only receives natural ways of receiving water. The height of pea plants is recorded daily. Control group
Answer:
The correct answer is -
Control group - the group of plants is not received an extra amount of water.
Control variable - the type of plant (pea plant)
Explanation:
It is asked that what is the control group in this research or study, a control group is the group of subjects that did not receive treatment in the study that is given to the experiment subjects.
Where is the control variable is a variable that remains unchanged during an experiment so it does not affect the experiment in the study.
Thus, the correct answer is -
Control group - the group of plants is not received an extra amount of water.
Control variable - the type of plant (pea plant)
will give brainlist to first person with right answer
Answer:
b!
Explanation:
Dr. Wagner is investigating a newly discovered, disease causing agent. She
determines that one structure in the agent is double-stranded RNA. What kind of
agent is Dr. Wagner studying?
A.virus
B. Protist
C. Fungus
D. Bacterium
You have heard that chewing gum during a test can help a student get a higher score. Your spiffy teacher has said that you can test your hypothesis during the next exam. what is Hypothesis: b. Experiment (what are you going to do?): c. What is the control group? d. What is the experimental group? e. The manipulated/independent variable: f. The responding/dependent variable:
Answer:
Explanation:
✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽
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The answer is F!
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