Answer:
This question is incomplete. It is asking to identify the following in the experiment:
Independent variable: CAFFEINE
Dependent variable: HEARTBEAT
Experimental group: POPULATION A, which were given 0.5g of caffeine
Control group: POPULATION B, which were not given caffeine
Constants: SAME TEMPERATURE, SAME AMOUNT OF FOOD, SAME TIME BEFORE CHECKING
Explanation:
Independent variable in an experiment is the variable which is changed or manipulated by the experiment. In this experiment, the independent variable is the CAFFEINE.
Dependent variable is the variable that is measured by the experiment or in other words, the variable that responds to changes made to the independent variable. In this experiment, the dependent variable is the HEARTBEAT measured.
The experimental group of an experiment is the group that receives the experimental treatment (caffeine). In this experiment, the POPULATION A of Daphnia magna, or water fleas are the experimental group because they received 0.5g of caffeine.
On the other hand, the control group is the group that does not receive the experimental treatment. In this experiment, POPULATION B did not receive any caffeine, hence, it is the CONTROL GROUP.
Constant or controlled variable are those variables that the experimenter must keep unchanged for all groups throughout the experiment, in order not to influence the experiment's outcome. In this experiment, the constants are: SAME TEMPERATURE, SAME AMOUNT OF FOOD, SAME TIME BEFORE CHECKING (2hrs)
Which organelle lines up and guides the chromosomes inside the cell during cell division in an animal cell? A. Cytoskeleton B. Ribosomes C. Centrioles D. Vacuole
Answer:
It would be C!
Explanation:
The function of Centrioles is to help organize the chromosomes before cell division occurs so that each daughter cell has the correct number of chromosomes after the cell divides! hope this helps!
Ill give brainless if correct
Answer:
B
Explanation: The mass, volume, and density would stay the same
Plants have both mitochondria and chloroplasts.
True
False
Answer:
Plants have both mitochondria and chloroplasts.
True
False
This is True.
Which part of Earth is included in the hydrosphere?
Answer:
air
Explanation:
Water, surface ground and air.
Explanation:
Discuss why liquid water can exist on Earth.
What would be the most likely effect of a wildfire that burned a large area of a forest?
In a cell, all the organelles work together to carry out
A) diffusion
B) active transport
C) information storage
D) the life processes for the cell
All the organelles in a cell work together to carry out the life processes for the cell.
ORGANELLES:
Organelles are organ-like structures found within a cell. They perform specific functions in the cell.For example;
Mitochondria is the site of energy productionRibosomes are site of protein synthesisVacuoles aids in water regulation in a cell. Nucleus store the genetic material of a cellCell membrane gives the cell a definite structure and protects its content. Although, each organelle is function-specific but they all work hand in hand to fulfill all the life processes of that cell.Learn more at: https://brainly.com/question/3282684?referrer=searchResults
Trees produce energy from sunlight. Animals eat tree leaves for energy. This is an example of ____________ . *
A.) Food web
B.) Food chain
Answer: A
Explanation:because i said so
Why should you never smell a chemical directly?
A. Many chemicals have no smell.
O B. All chemicals smell the same.
C. You cannot learn anything by smelling.
D. Some chemicals can hurt your windpipe.
Answer:
D
Explanation:
Some chemicals can hurt your windpipe
Answer:
D
Explanation:
by directly smelling something you are ingesting tiny particles of it, which is why directly smelling a chemical is a bad idea.
Which is more important: species richness or species evenness?
Answer:
Honestly i think that its Richness because its good to have a good amount of different species so that there is a good number of animals to create a food chain. The amount of animals in a population is important but its more important to have a variety of different animals so that all the populations have other animals to eat or survive off of.
Explanation:
What units can be used to measure density?
Answer:
Kilogram per cubic meter
Explanation:
Hope this helps<3 i hope u have an amazing day luv
What are the possible genotypes of the gametes?
Answer:
There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.
Explanation:
Please help on number 15 I’ll make brain list of you do it for me please.
Answer:
A
Explanation:
I'm not 100% the reason that I think it's a is because I remember something about climate.
A bacterium, containing one circular DNA chromosome, undergoes four rounds of replication. How many new strands of DNA would result?
Answer:
The correct answer is 32 strands.
Explanation:
In bacterium, DNA replication is bidirectional which means it takes place in both directions. The origin of replication starts the replication, it is a specific sequence of nucleotides. Each strand of circular DNA acts as a parent strand to replicate its complementary new strand, resulting in two new DNA strands, one parent strand, and one new synthesized strand. So after the first round of replication, there are 4 strands formed.
Similarly, during the second round of replication each of the four strands will be synthesized lead to a total of 8 strands in the same manner. So by the same process in 3rd round will lead to 16 new strands and by the fourth round of replication 32 strands will be synthesized.
Thus, the correct answer is 32 strands.
How does water rise from the roots of a tree to the very top?
Answer:
Explanation:
" Water travels from a tree's roots to its canopy by way of this conductive tissue. In hardwoods, water moves throughout the tree in xylem cells called vessels, which are lined up end-to-end and have large openings in their ends. In contrast, the xylem of conifers consists of enclosed cells called tracheids."
Tyrone slipped and fell on his gluteal region. Which area of his body did he injure?
1. the shoulder blade
2. the lower back
3. the buttocks
4. the groin
Answer:
the buttocks
Explanation:
the glutes are your behind.
C. The Buttocks
Gluteal=Buttocks
6Both plant and animal cells have a cell wall.
A.
True
B.
False
Help please thank you
Answer:
False the answer is actually false
Which is one piece of evidence of seafloor spreading?
fossil material
continent material
drilled core samples
ocean water samples
One of the evidence of seafloor spreading is continent material.
Seafloor spreading can be regarded as geologic process which involves the splitting apart of tectonic plates.
This plates serves as large slabs of Earth's lithosphere and this spreading as well as some activities is been done by mantle convection.
One of the evidence of this spreading is continent material which could be any Continental mass that can rise.
We can conclude that one of evidence of seafloor spreading is
continent material.
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Answer:b
Explanation:
The statement. "Sounds that last from 1 to 3 seconds will be considered a
single chirp," is an example of
1) a controlled experiment
2) an operational definition
3) a manipulated variable
4) a responding variable
Answer:
an operational definition
Explanation:
Answer:
operational definition
Explanation:
An operational definition is a statement that describes how to measure a particular variable or define a particular term. For example, in this experiment you would need to determine what sounds will count as a single “chirp.”
Why do we rely on lactic acid fermentation only as a temporary energy source?
Answer:
This usually happens when there is not enough oxygen in the body, so lactic acid fermentation provides a way to get ATP without it. The process relies on stored energy sources such as sugars or starches, which it can break down to make simpler molecules and energy. ... Lactic acidosis usually occurs because of exercise.
The process relies on stored energy sources such as sugars or starches, which it can break down to make simpler molecules and energy. Lactic acidosis usually occurs because of exercise.
What is lactic acidosis?Lactic acidosis refers to lactic acid build up in the bloodstream. Lactic acid is produced when oxygen levels become low in cells within the areas of the body where metabolism takes place.
The symptoms of lactic acidosis include abdominal or stomach discomfort, decreased appetite, diarrhea, fast, shallow breathing, a general feeling of discomfort, muscle pain or cramping.
Lactic acidosis occurs when lactic acid production exceeds lactic acid clearance. The increase in lactate production is usually caused by impaired tissue oxygenation, either from decreased oxygen delivery or a defect in mitochondrial oxygen utilization.
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1 point
3. When gametes (sex cells) are produced from a body cell during normal
meiosis, which of the following describes the number of chromosomes in
each new sex cell? *
A. Each resulting cell has the same number of chromosomes as the original body cell.
B. Each resulting cell has twice the number of chromosomes as the original body cell.
C. Each resulting cell has one-half the number of chromosomes as the original body
cell
D. Each resulting cell has one-fourth the number of chromosomes as the original body
cell.
Answer:
B
Explanation:
Where are electrons found in Atoms
Answer:
Explanation:
The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.
Explanation:
Issun Shingeki... Messatsu!
In short, electrons are the negative charge in Atoms.
what of the following are functions of lipids? choose three correct answers
You didn't give any of the options so i'm gonna assume
forming waxy leaf coverings
storing energy in fat cells
forming cell membranes
As ecosystems move through the states of succession, the populations of organisms in them change. Which of the following describes the stage of succession likely to have the most species diversity?
how does the amount of precipitation affect the tundra and tropical rain forest species?
The amount of precipitation affects the number of species due to water being a primary resource for survival of all living organisms.
Round to the nearest tenth. 7.514
Answer:7.5
Explanation: The 5 is in the tenths place and the number in the hundredths place is less than 5 which means you drop it and you’re left with 7.5
Blood pressure can be taken by using the carotid artery. This artery is found on the side of the neck. Which region best describes the location of the carotid artery?
1. facial
2. cervical
3. buccal
4. cephalic
Describe the path that air takes as it enters and passes through the human respiratory system
Answer: The pathway of air in the respiratory system starts with the external organs of the nose and mouth. Nose: Air is inhaled through the nostrils (and sometimes through the mouth) where it is filtered by the hairs and cilia to remove dust particles and moistened. The nasal cavity also moderates the temperature of the inhaled air.
Explanation:
the single main root is called the...
Answer:The first root that germinates from the seed is called‘radical’ The radical develops into single prominent root called as ‘primary or main root’ It is the strongest and grows vertically downwards due to gravitation and deep into the soil Several branches arise from the main tap root known as lateral or secondary roots
Explanation:
Answer:
the taproot
Explanation:
Which of the following would be a function of the nucleic acids?
A.
They are used to store and transmit genetic information
B.
They are used to store energy
C.
They are used for structural purposes
D.
They are used to insulate the body
Nucleic acids include DNA and RNA, are the genetic material in living things. The main function of the nucleic acids is to store and transmit the genetic information. Thus, the correct option is A.
What are Nucleic acids?Nucleic acids are biopolymers, which are essential to all known forms of life. They are composed of nucleotide polymers. Nucleotides are the monomers of nucleic acids which are made up of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base. The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Nucleic acids play essential roles in all cells and viruses. The main function of nucleic acids involves storage and expression of genetic information in organisms. Deoxyribonucleic acid (DNA), encodes the information cells need to make proteins.
Therefore, the correct option is A.
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