The controlled variable is kept constant during the whole experiment in all the different study groups. In this experiment, Sodium bicarbonate solution is the controlled variable.
------------------------
During an experiment, the controlled variables are kept constant in the control groups and the experimental groups. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.
In this experiment,
The independent variable → presence/absence of light reaching the plant. The researcher regulates the amount of light by using different elements such as the bucket, lamp, flashlight, and natural light. The dependent variable → oxygen production through which the researcher measures the photosynthesis rate. The controlled variable → Sodium bicarbonate solution. It provides carbon dioxyde, and must be constant in the four scenarios to avoid an effect on the results.-----------------------
Related link: https://brainly.com/question/20511901?referrer=searchResults
explain what is meant by a ' reactant ' .
Explanation:
A substance that enters into and is altered in the course of a chemical reaction.
hope are you understand
what is biology definition in details
Answer:
Biology :[tex]<font color=green>[/tex]
the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.
[tex]<font color=pink>[/tex]
#Be Brainly
Answer:
The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.
Hope this helps! :D
Which best compares radiation and conduction?
Both transfer thermal energy from warm objects to cooler objects.
Both can transfer energy through empty space.
Both transfer thermal energy by electromagnetic waves.
Both involve the transfer of energy through direct contact.
Answer:
Both transfer thermal energy from warm objects to cooler objects.
Explanation:
Radiation involves the transfer of energy in the form of light, heat and electromagnetic waves such as x-rays while conduction involves the transfer of energy through direct contact of the two substances. The both of them involve involve the transfer of thermal energy from hotter objects to colder objects.
Radiation is involved in the transfer of energy through empty spaces while conduction involves transfer of energy through direct contact.
The statement which best compares radiation and conduction is both transfer thermal energy from warm objects to cooler objects.
To answer the question, we need to know what heat transfer is
What is heat transfer?This is the transfer of thermal energy from one body to the other.
Types of heat transferThere are 3 types of heat transfer namely
Conduction - This is the transfer of thermal energy from warms objects to cooler objects through direct contact. This usually occurs in solids.
Convection - This is transfer of thermal energy from warmer objects to cooler objects by movement of the whole object. This usually occurs in fluids.
Radiation - This is transfer of thermal energy from warm objects to cools objects through empty space by electromagnetic waves.
So, the similarity between conduction and radiation is that both transfer thermal energy from warm objects to cooler objects.
So, the statement which best compares radiation and conduction is both transfer thermal energy from warm objects to cooler objects.
Learn more about thermal energy here:
https://brainly.com/question/19666326
#SPJ2
Ergogenic aids can be useful in some circumstances, some are possibly useful but still under study, and still others are downright dangerous and illegal. 1. human growth hormone.
2. anabolic steroids
3. creatine
4. caffeine
5. beta-hydroxy-beta methylbutyric acid (HMB)
6. branched-chain amino acidsA. The use of_____may improve performance for those who undertake repeated bursts of activity, such as in sprinting or weightlifting.B. Consuming small amounts of_______can increase menta alertness. C. Consuming______may enhance muscle recovery after intense physical activity. D. An ergogenic aid that increases muscle mass but may also cause uncontrolled growth of the heart or other organs and is banned by the International Olympic Committee is______.
Answer:
Using beta-hydroxy-beta methylbutyric acid (HMB) can improve performance for those who perform explosive repetitions of activity, such as running or lifting weights. Consuming small amounts of caffeine can increase mint alertness. C. The consumption of branched-chain amino acids and creatine can improve muscle recovery after intense physical activity. D. An ergogenic aid that increases muscle mass but can also cause uncontrolled growth of the heart or other organs and is prohibited by the International Olympic Committee: anabolic steroids.
Explanation:
In the answer I leave you the text with the blanks completed ... It is also important that you know that amino acids are important for the formation of muscle mass and its recovery, in addition to creatinine.
On the other hand, these supplements are administered in people who have high performance in sports, and accompanied by a good diet and specific diet, otherwise they will not work.
Anabolics are chemical structures that promote energy reserves and anabolism for muscle tissue hypertrophy, but they do not have a selective effect on the skeletal muscle, but rather affect other parts of the body, that is why they are risky, cause heart failure, cardiovascular, liver, kidney, and even possible alterations of the gallbladder.
define atomic number in your own words
state three effects of
crop disease
Answer:
Reduce yeild
Effects the production quality
Cost of productions increased
Explanation:
11. Sensory receptors throughout the body monitor stimuli and communicate with the central nervous system to allow you to respc
in your environment or internal conditions. What component of feedback loops do sensory receptors fulfill?
O A. Controller
B. Hormones
C. Sensor
D. Effector
Answer:hormones
Explanation:
Answer:
C. Sensor
Explanation:
According to https://open.oregonstate.education/aandp/chapter/13-1-sensory-receptors/
- "A major role of sensory receptors is to help us learn about the environment around us, or about the state of our internal environment. Different types of stimuli from varying sources are received and changed into the electrochemical signals of the nervous system. This process is called sensory transduction."
Hope this Helps :)
All enzymes which catalyze the chemical reactions of a cell are
a. carbohydrates b. lipids c. long-chain fatty acids d. proteins e. ribonucleic acids no another by differences in
Answer:
I think the answer will be protein.
Answer:
the answer is carbohydrates
Why does the DNA that makes up the chromosomes need to replicate before the start of meiosis?
Explanation:
DNA replication needs to occur because existing cells divide to produce new cells. ... So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
Which of the only four available pints of blood (A+, AB–, B–, and O+) should the patient receive for a transfusion?
1. B-
2. AB-
3. A+
4. O+
You need to include more of which nutrient in your diet as compared to your
grandmother and why ?
what is mean by combution
Answer: Burning
Combustion is the scientific word for burning.
Research has proven that ;
During combustion(burning) a substance reacts with oxygen from the air and these reactions happen at high temperatures, and transfer energy to the surroundings as light and heat.
This is why you see flames when things burn.
Explanation:
State one reason why soil organisms need air
Answer:
Soil organisms need air because to release plants nutrition to soil .
Please choose the answer that best fills in the blanks of this statement in the correct order. Photosynthesis proceeds in two phases: the light-_______ reactions which proceed only in the presence of sunlight, and the light-________ reactions which proceed regardless of the lighting conditions.
Answer:
first blank dependent
second blank independent
Explanation:
Light Dependent reactions depend on light and right independent reactions don't
Which organelle is the primary site of protein production? A) nucleus B) ribosomes C) cytoplasm C) cell membrane
Answer: b
Explanation:
Just trust
Answer:
B, ribosomes :)))))
Explanation:
describe environment and its causes
Answer:
The definition including its particular circumstance is outlined in the subsection below on clarification.
Explanation:
The environment seems to be the reason why things like waterlogged as well as the warm environment are dissimilar. It can sometimes be aspects that are alive or nonalive.
Some causes related to the given topic are as follows:
This comprises all the usual physical, biological, and perhaps other causes.They deal with that as well constantly and therefore are adjusting to just the circumstances in their world.
Which statements accurately describe the roles of water on earth
Answer:
C.
Explanation:
It carries cold water from the equator to the poles
what are the problems and the challenges in classifying living things
Answer:
below
Explanation:
there are so many different kinds of living things that its so difficult to classify them as there would be too many classifications that it would become absurd to have only a few organsims in a single group. the role of classification is to organize as well as simplify so it proves to be a challenge when the subgroups branching from eukoryotes vs prokaryotes become too small and therefore it becomes a giant mess. even the current classification system (taxonomy) is flawed.
The problems/challenges associated with classifying living things is : The challenge of having a very small number of living thing classified into a subgroup and having an enormous amount of subgroups.
Although the main reason of classification of organism is to organize/categorize every living thing into a suitable group as well as simplify the subgroups( this leads to having a lot of subgroups ). there is also a challenge whereby the subgroups become so small when trying to categorize every organisms following all the rules of taxonomy. while
Taxonomy is the science of classifying living things into different groups and subgroups following certain similar characteristics exhibited by the organism.
An example is : The subgroups of eukaryotes vs prokaryotes becoming too small. because the rules of Taxonomy been followed.
hence the challenges are: very small number of living thing classified into a subgroup and having an enormous amount of subgroups.
learn more : https://brainly.com/question/1845332
Does anyone know the answer for 1?
Question 17 of 25
Why do plants produce more carbon dioxide than oxygen during the night?
O A. Respiration produces oxygen during the day and carbon dioxide at
night.
B. Respiration can happen without sunlight, but photosynthesis
cannot.
O C. Respiration can only occur when there is no available sunlight.
O D. Photosynthesis only produces carbon dioxide during the night.
SUBMIT
Answer:
B
Explanation:
Respiration can happen without sunlight,but photosynthesis cannot.and photosynthesis doesn't take place at night,so less carbon dioxide is used up than it is produced.
I hope this helps
Which of the following is a testable hypothesis?
a. Roses are more beautiful than violets.
b. A plant needs at least five hours of sunlight per day to grow.
c. I've cream is delicious.
d. Humans will someday land on Mars.
Answer:
B. because it's something u can actually do it, and it's more reasonable
Explanation:
an example for a hypothesis could be, If a gets at least 5 hours of sunlight per day, then it will grow. I hope this helps you :)
What is a macromolecule? Question 6 options: a) a molecule that contains carbon b) a very large molecule c) a molecule that has two hydrogen atoms and one oxygen atom d) a molecule you can see with the naked eye
Answer:
b)a very large molecule
Explanation:
A macromolecule is a very large molecule, such as a protein. They are composed of thousands of covalently bonded atoms. Many macromolecules are polymers of smaller molecules called monomers. The most common macromolecules in biochemistry are biopolymers and large non-polymeric molecules such as lipids and macrocycles.
It can be inferred from the passage that the time required to replenish muscle glycogen following anaerobic glycolysis is determined by which of the following factors? I. Rate of oxidative metabolism II. Quantity of lactic acid in the body fluids III. Percentage of glucose that is returned to the muscles
Answer:
Percentage of glucose that is returned to the muscles.
Explanation:
After intense physical activity, where glycogen reserves are consumed, the muscle acquires its resting and reactivation position, is where the organism that feeds the new reserves for the next physical activity is located.
Foods rich in carbohydrates identified as ATP or glucose in good quantities, but this depends on the amount of intake and the quality of the food, that is how when consuming these sources, the serum glucose values are metabolized, that is, increases glycemia and this promotes the release of insulin that is responsible for generating energy reserves with more complex chemical bonds such as glycogen.
An organism is _______ for a gene if it has two copies of the same allele for the gene.
The genotype of an organism and the interaction of the genotype with the environment determine the organism’s _______, or observable characteristics.
The law of independent assortment states that the separation of alleles for one gene are independent of that of other genes, unless the genes are _______.
Mendel’s law of _______ governs which allele is expressed in an individual.
Respond to the following based on your reading.
In the previous section, you learned that the allele for brown eyes (B) is dominant, and blue (b) and green eyes (g) are recessive, while green eyes are dominant over blue eyes. What eye color would someone with the following genotypes exhibit? (a) BB, (b) Bb, (c) gb, (d) Bg, (e) bb.
Discuss the law of segregation and explain why each organism has two copies of the gene for each trait expressed.
What type of experiments did Mendel conduct, and what did he want to find out about the heritability of the seven traits he chose to study?
Answer:
1. Purebred (N.B: the exact word is considered a foul word)
2. Phenotype
3. Linked
4. Segregation
5) (a) BB- Brown eyes
(b) Bb- brown eyes
(c) gb- green eyes
(d) Bg- brown eyes
(e) bb- blue eyes
The other questions are explained below
Explanation:
1. A purebred organism is that which possess two copies of the same alleles in its genotype. An allele is a contrasting form of a gene. If the two alleles are the same, the organism is said to be purebred.
2. Phenotype of an organism is the observable characteristics of the organism. It is determined by the organism's genotype in interaction with its environment.
3. Mendel's law of independent assortment states that the alleles of a gene will separate into gametes independently of another gene unless the genes are linked. Linked genes are genes that are too close to each other on a chromosome and hence, do not sort independently. They're rather inherited together.
4. Mendel’s law of Segregation governs which allele is expressed in an individual. According to this law, an organism will express the allele it randomly receives from each parent. If an organism receives two different alleles, it will express the allele that is dominant. In other words, an organism will only express the recessive trait if it receives two recessive alleles from both parents.
5. a) BB- Brown eyes because the organism is purebred for the dominant (brown) allele
(b) Bb- brown eyes because the brown allele (B) will mask the expression of blue allele (b) and express itself.
(c) gb- green eyes because the allele for green eyes (g) is dominant over the allele for blue eyes.
(d) Bg- brown eyes because the brown allele (B) is dominant over the allele for green eyes (g), hence, it will mask its expression
(e) bb- blue eyes because the organism is purebred for the blue allele i.e. same recessive (blue) alleles in the gene.
6. The law of segregation as proposed by Mendel states that the alleles of a gene will separate into gametes during gamete formation (meiosis). This is done in such a way that each gamete contains only one allele of each gene. Hence, an organisms will contain two copies of a gene because they receive each copy (allele) from each parent during fusion of their gametes.
7. Mendel conducted an hybridization experiment i.e. a cross involving two individuals that possess different traits. He did this in order to find out how different traits/characteristics in organisms were transferred from one generation to another. Mendel chose the pea plant for his experiment because they could easily be manipulated for self and cross pollination. Mendel studied seven (7) different traits or characteristics in pea plants including height, seed shape, seed color, flower color etc.
Pls help the picture above .i will surely mark the first person as the brainliest
Answer:
Wilting occurs due to excess removal of water from plant body.
Crop rotation.
Explanation:
The main use of blue green algae is that it has the ability of fixing atmospheric nitrogen for the plants. Oil is extracted from Neem leaves which is used as fungicide and pesticide for plants. Turmeric is used as healing of wounds for both plants and animals. It also prevent fungal and bacterial disease in plants. Plants will wilt if not watered because water is removed from the body of plants in order to cool down the inner temperature so due to removal of excess water from plant body it will dry and start wilting. Crop rotation is used in these cropping system. Crop rotation is a practice of growing more than one crop on the same piece of land in a year.
What is the fitness of an organism?
O A. The environment the organism lives in
O B. The ability to survive and reproduce
O C. The total population of a species
O D. The number of resources an organism uses
Answer:
B the ability to survive and reproduce.
Which part of the brain is indicated by the arrow below?
Pons
Cerebellum
Cerebrum
Medulla oblongata
Answer:
the correct answer is option ( A ) pons
Explanation:
hope it helps you
Mark my answer as brainlist
have a nice day
Answer:
A. Pons
Explanation:
I got it right on my quiz :)
In terms of pedogenic regimes, the process that results in an accumulation of humus overlaying a thick, water saturated layer of clay in cold, wet climates with poor drainage conditions is
Answer:
https://onlinelibrary.wiley.com/doi/full/10.1111/j.1936-704X.2015.03186.x the ans is more than 5000 lines so I cont lell it so it is the link of the ans
hey guys
Pls answer ⤵️
write short note on IVF
Answer:
In vitro fertilization (IVF) is a type of assistive reproductive technology (ART). It involves retrieving eggs from a woman's ovaries and fertilizing them with sperm. This fertilized egg is known as an embryo. The embryo can then be frozen for storage or transferred to a woman's uterus.
Answer:
IVF YOU MEAN 4 F?????????
answer these two please