James wants to know which brand of shoe will help him run faster. He thinks the more expensive shoe should be the one that helps him run faster. He tries three different types of running shoes. He runs one lap on the track with pair of shoes ( shoe A) and times how long it takes. He rests for 15 minutes. Then, he tries on another of shoes (shoe B) and runs a lap around the track, while timing how long it takes. He rests for 15 minutes before repeating the lap with the last brand of shoes (shoe C).
Which type of investigation did he complete ?
a.)experimental
b.)descriptive
c.)observational
Answer:
C.) Experimental
Explanation:
He conducts test to see which shoe helps him better, in so doing a experimental investigation
Crossing over and fertilization both result in which of the following
A.transcription
B.increase in genetic variation
C.an increase in the chromosome number
D. horizontal gene transfer
Answer: increase in genetic variation
Explanation:
In general, why might ecologists be concerned when new invasion species arrive in an ecosystem?
Answer:
In general, why might ecologists be concerned when new invasive species arrive in an ecosystem? Like terrestrial environments, coral reefs can be damaged by invasive species. Reefs are also impacted by disease-causing bacteria, humans, and other biotic factors, or living parts of the ecosystem.
Explanation:
.
The light dependent reaction takes place in the
Answer:
Thylakoid
Explanation:
each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.
What percent of America's original forest remains today?
Less than 4% or under 40 million acres of America's original forests remain in existence.
(hope this helps ^^)
Answer:
Less than 4% or under 40 million acres of America's original forests remain in existence. According to the World Resources Institute, less than 1% of "Frontier Forests"--large, contiguous virgin forests with all the species intact--still exist in the lower 48 states.
Explanation:
In the picture how does the thermal energy definitely flow?
Answer:
from the bears to the snow
I did my test and I got 100%
7. Which of the following is a physical change in matter that takes
place in the digestive system?
Answer:Mechanical digestion physically breaks down food, like when teeth macerate food into a bolus. The stomach contracts and relaxes in a churning motion. ... Chemical digestion occurs when the bonds within larger food molecules are broken, creating smaller molecules that the body can use.May 30, 2017
Explanation:
Describe the interaction between an enzyme and it’s substrate
Answer: The enzyme 's active site binds to the substrate. ... When an enzyme binds its substrate it forms an enzyme-substrate complex. Enzymes promote chemical reactions by bringing substrates together in an optimal orientation, thus creating an ideal chemical environment for the reaction to occur.
All of the following are methods for non-native species to move into a new community EXCEPT:
Migration
Ballast water of ships
Pet trade
evolution
Why is oxygen important to humans? *
A. It is the only gas in Earth's atmosphere.
B. Our cells require oxygen gas to break down the food we consume and provide the
energy we need to live.
C. It's not important - humans can breathe in multiple gasses for energy.
Answer:
b is the answer
Explanation:
b is the answer
A____needs a host to survive
Answer:
virus................
Which of the following accurately describes the process of crossing over?
А
Crossing over occurs before replication and non-sister chromatids exchange gene segments to make new combinations of genes.
B
Crossing over occurs after replication and non-sister chromatids exchange gene segments to make new combinations of genes.
с
Crossing over occurs before replication and only sister chromatids exchange gene segments to make new combinations of genes.
D
Crossing over occurs after replication and only sister chromatids exchange gene segments to make new combinations of genes.
The statement that accurately describes the process of crossing over is that crossing over occurs after replication and non-sister chromatids exchange gene segments to make new combinations of genes. So, the correct option is B.
What is Crossing over?Crossing over is a process through which there is an exchange of genetic material between non-sister chromatids of a homologous chromosome.
After the replication process, the amount of genetic content gets doubled and arranged in the form of chromatids. Two chromatids of the same chromosomes are known as sister chromatids. And those two chromatids of homologous chromosomes are known as non-sister chromatids.
Therefore, crossing overs occurs after replication, and non-sister chromatids exchange gene segments to make new combinations of genes.
To learn more about Crossing over, refer to the link:
https://brainly.com/question/927405
Which of these cars do you think is not accelerating?
A car stopped at a curb
A car slowing down at a stop sign
A car speeding up to pass another car
A car turning a corner
The cell wall gives the cells...
-Structure
-Energy
-Protein
-Photosynthesis
what route does oxygen take as it enters the body?
Answer:
D
Explanation:
Plsss anyone wanna help?
Answer:
I believe E is the correct answer..
Explanation:
Look at a cell model online. What does it show you? It's organelles and it's shape.
what activity makes water came to the surface?
Answer: Surface water is water located on top of the Earth's surface such as rivers, creeks, and wetlands. This may also be referred to as blue water. The vast majority is produced by precipitation and water runoff from nearby areas.
Explanation:
What is the answer? Please
Answer:
1. nucleus
2. nucleolus
3. cell membrane
4. cytoplasm
Explanation:
What organisms would be found in this biome?
A) vines, ferns, and sloths
B) sedge, arctic hares, and arctic foxes
C) cacti, lizards, and bats
D) cedars, pine trees, and warblers
Answer:
im thinking its C
Explanation:
Answer:
The answer is B, sedge, arctic hares, and arctic foxes
Explanation:
Energy-storing sugars are made during the __________ in photosynthesis.
Answer:
Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
Explanation:
please make me as brainlelist
Plants and other living things use photosynthesis to convert light energy into chemical energy, which is then released via cellular respiration to power the organism's activities.
How does sugar get its energy from photosynthesis?Plants use their leaves to capture light energy during photosynthesis. Water and carbon dioxide are converted by plants into a sugar called glucose using the power of the sun. Plants use glucose as a source of energy and to create other compounds like cellulose and starch.
Light, water, and carbon dioxide (CO2) are converted into energy and sugar inside the chloroplasts of leaves (glucose). Sunlight is transformed into energy-storing molecules in the plant cells using water. These molecules' energy is subsequently utilised to convert CO2 into glucose.
To learn more about Photosynthesis refer to:
https://brainly.com/question/19160081
#SPJ2
the soil matter formed by decade organic matter is called
Answer:
the soil matter formed by decade organic matter is called humus.
The process of ecological change in a community over time
Answer:
Ecological succession is the process of change in the species structure of an ecological community over time. ... It is a phenomenon or process by which an ecological community undergoes more or less orderly and predictable changes following a disturbance or the initial colonization of a new habitat.
Explanation:
Could I pls get help??
Answer:
The answer is E
Explanation:
A cell model demonstrates it's organelles and shape.
When you breathe out, carbon dioxide passes from the what
into the air.
Answer:
Lungs
Explanation:
This is when oxygen has been taken into the blood carbondioxide is then exchanged
Answer:
blood
When you _________, carbon dioxide and water pass from the blood out into the air.
Explanation:
Which of these is most likely to be true of an urban community ?
Answer:
An urban community has buildings. An urban community has more air pollution than other types of communities.
The high-energy batteries from the question above are used to power another very important reaction in photosynthesis. What is the reaction?
Answer:
This question is incomplete but it can be answered based on general understanding.
The reaction is CALVIN CYCLE OR LIGHT-INDEPENDENT REACTION
Explanation:
The high energy batteries being referred to in this question IS ATP. ATP is an energy-storing molecule produced in the first stage or reaction of photosynthesis called LIGHT DEPENDENT REACTION. Photosynthesis, which occurs in two stages, produces ATP molecule in the first stage as a result of the charging of ADP into ATP.
The ATP molecule, which serves as a high energy battery, is used to power the second stage of photosynthesis called LIGHT INDEPENDENT REACTION OR CALVIN CYCLE in order to yield sugars.
A student does an experiment for a science fair to study whether temperature affects the timing of a cricket's chirps. The student keeps a cricket in an enclosed box that is heated to different temperatures each day for twelve days. The student records the cricket's chirps by using a sound-activated microphone so the timing of the chirps can be measured. Which is the dependent variable in this experiment? O size of the box O temperature of the box O timing of the cricket's chirps O volume of the cricket's chirps Save and Exit Next Submit Mark this and return
Answer:
the timing of the cricket's chirps
Explanation:
!Urgent!
If you were to examine a plant or animal cell under a microscope, what phase of the cell cycle would you most likely see? Explain your reasoning.
Answer:
Explanation:
During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).
If you were to examine a plant or animal cell under a microscope, you would most likely see the interphase of the cell cycle. This is the resting phase.
What is the cell cycle?The cell cycle may be defined as the entire sequence of events happening from the end of one nuclear division to the beginning of the next. The cell cycle can be divided into two phases. They are as follows:
InterphaseM-phase (Division phase).During the interphase of the cell cycle, the cell undergoes normal growth processes with the replication of DNA in the synthesis phase. Chromosomes are observed in a little bit condensed state during the mitotic division.
Apart from this, cells do not undergo many series of alterations. It follows the path of rest, and hence it is known as the resting phase. Chromatin is somehow observed in a condensed state loosely distributed throughout the nucleus of the cell.
Therefore, the interphase of the cell cycle would you most likely see, when you were to examine a plant or animal cell under a microscope.
To learn more about the interphase of the cell cycle, refer to the link:
https://brainly.com/question/1509916
#SPJ2
A person has trouble coordinating muscle movements. Which two tissues could be injured?
O Connective; epithelial
O Epithelial; muscle
Nervous, muscle
O Cardiac; epithelial
Answer:
connective; epithelial
Explanation:
Which structures are part of the body's first line of defense against pathogens?
Answer:
Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens.
Explanation:
can I have brainliest
