How will you eliminate the effect of extranous variable?
Answer:
An extraneous variable is eliminated, for example, if background noise that might reduce the audibility of speech is removed as Unknown extraneous variables can be controlled by randomization.
The hormones of the adrenal medulla are modified
(a) fatty acids. (b) amino acids. (c) monosaccharides. (d) nucleotides. (e) steroids.
Answer:
b
Explanation:
hormones of adrenal medulla are Adrenaline and non- Adrenaline. they are the derivatives of amino acids called Tyrosine( aromatic Amino acid)
The hormones of the adrenal medulla are modified versions of amino acids. Thus, the correct option is B.
What is the Adrenal medulla?The adrenal medulla may be defined as an internal part or region of the adrenal gland which is located at the region of the top of each kidney.
The adrenal gland is a small gland that comprises the adrenal cortex and adrenal medulla. The adrenal cortex synthesizes steroids hormones like mineralocorticoids, glucocorticoids, etc. While the adrenal medulla is responsible for the secretion of epinephrine and norepinephrine.
The hormone epinephrine is also known as adrenaline. It is often called catecholamine. This epinephrine is extracted from the derivatives of amino acids known as tyrosine.
Therefore, the hormones of the adrenal medulla are modified versions of amino acids. Thus, the correct option is B.
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PLEASE ANSWER QUICK!Which of these is least likely to show common ancestry?
O A. homologous structures
O B. analogous structures
O C. DNA
O D. vestigial structures
pls i need to pass this class
TRUE OR FALSE Ammonia, urea, and uric acid are nitrogenous wastes by different animals.
Explanation:
true
salamat sa points
pa brainliest
What is the location of point R on the number line?
Fourteen-fifths
Sixteen-fifths
Eighteen-fifths
Twenty-two-fifths
Answer:
14 over 5
Explanation:
Answer:
14/5
Explanation:
Please help!! This is Science
Which of the following will most likely happen if the pancreas does not produce sufficient insulin?
A)Blood sugar will decrease because insulin lowers blood sugar when it rises too high.
B) Blood sugar will increase because insulin increases blood sugar when it falls too low.
C) Blood sugar will increase because insulin lowers blood sugar when it rises too high.
D) Blood sugar will decrease because insulin increases blood sugar when it falls too low.
Answer:
number 1
Explanation
i took the test and got it right
Give two examples of something that could be found in the cryosphere.
Answer:
ice caps and glaciers
Explanation:
There were Monarch Butterflies, finches, and bumble bees in the field. What type of level of organization would this be? Organism, Population, Community, Ecosystem?
how many times does a child have to be vaccinated against tetanus?
Answer:
There are 5 doses to the tetanus shot for a child. That is what is reccommended.
Explanation:
If the island has a lot of trees going through photosynthesis, what is in the air we need for cellular respiration?
Answer:
Hello~
Llamalover here!
As you can see, cellular respiration begins with one molecule of glucose and some oxygen (the oxygen is in the air that we breathe and is required for cellular respiration), and the end product is energy, with carbon dioxide and water as byproducts.
Explanation:
I hope this helps!
17. What structure connects muscle to bone?
Explanation:
tendone connect muscle to bone
Answer:
Tendon connects muscle to bone.
hope it helps :)
Explanation:
Vascular Tissue is mostly likely to be found in the___of a plant’s shoot
- Center
- Between the center and outside
- None of these
- Outside
What does the suffix "-trophic" mean?
Group of answer choices
feeding
life
the study of
without
Answer:
it should be the study of
Explanation:
When a spring is compressed the energy changes from kinetic to potential which best describes what is causing the change
A. Work
B. power
C. Gravitational energy
D. Chemical energy
9. When we test for the effectiveness of disinfectants AKA disk diffusion method, we look for?
A. Type of hemolysis
B. Agglutination
C. Zone of inhibition
D. Fermentation
10. All the following factors affect the effectiveness of prescribed antibiotic except?
A. Dose of the drug
B. Intake duration
C. Other chronic medical condition the patient may have
D. Age of the patient
11. The enteric bacteria are group of microorganisms which commonly infect?
A. Respiratory system
B. Digestive system
C. Cardiovascular system
D. Reproductive system
12. The best plate to cultivate enteric bacteria is?
A. EMB
B. Blood agar
C. Mannitol salt
D. Sabouraud agar plate
13. The Ingredient in Hektoen plate which makes the agar selective is?
A. Salt
B. Glucose
C. Mannitol
D. Bile acids
Answer:
9.) Zone of Inhibition
10.) age of the patient
11.) enteric bacteria usually affect digestive system
12.)EMB
13.) Bile salts
Compare and contrast eukaryotic and prokaryotic cells. Give at least three examples for each.
Answer:
Prokaryotic cells are unicellular organisms, which reproduce through binary fission. In some cases few prokaryotic organisms also reproduce by budding. Prokaryotic cells have a cell envelope, which generally consists of a capsule, cell wall, cytoplasm, plasma membrane, cytoplasm region or nucleiod region, ribosome, plasmids, pili and flagella.
1. In what form is O2 transported from the lungs to the tissues
Answer:
Oxygen is transported from the lungs to the tissues in the form of reversibly bound to haemoglobin and dissolved in plasma (and intracellular fluid).
What characteristic could provide a species with a better chance of surviving a drastic environmental change?
(A) A small population size
(B) A highly diversified gene pool
(C) specialized cells within the body
(D) Many individuals with the recessive trait
A highly diversified gene pool could provide a species with a better chance of surviving a drastic environmental change. So, the correct option is B.
What is Diversified Gene pool?Greater genetic diversity within a population is made possible by a diverse gene pool, which raises the possibility that at least some members of the population will exhibit features that are more adapted to the new environment.
This variety can develop as a result of gene flow from other populations or mutations. The number of people having the recessive trait or a limited population size, however, would not always give an advantage in enduring environmental change. A species may have a better chance of surviving a severe environmental shift if its gene pool is extremely varied.
Therefore, the correct option is B.
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For all multicellular living things, new cells must be produced from the original single cell.
True
False
It's true...................
1.plants produce carbon dioxide and water in the process of photosynthesis(true or false?)
2.most organisms depend on plants for oxygen(true or false?)
3.glucose is produced in the mitochondria of plants(true or false?)
4.cellular respiration occurs only in animals(true or false?)
5.chloroplasts release energy when they break down glucose(true or false)
6.both plants and animals depend on the carbon dioxide oxygen cycle(true or false?)
Answer:
Explanation:
1. true
2. true
3. false
4. false
5. true
6. true
Rainbows, like the one shown below, form when sunlight passes through raindrops and is separated into different colors.
What happens to the sunlight when it passes through the raindrops that causes the rainbow to form?
A.
The sunlight travels in a straight line through the raindrops.
B. The sunlight is absorbed by the raindrops.
OC.
The sunlight is reflected off of the raindrops.
D.
The sunlight is bent and redirected by the raindrops.
Answer:
D. The sunlight is bent and redirected by the raindrops
Explanation:
This is refraction of light.Understand clearly the difference between reflection which is the bouncing back of light on shiny smooth surfaces and refraction is the bending of light therefore when the sun rays hit the raindrops it is bent and the light is split from a white colour to seven colours known as spectrum
Which statement describes how a biotic factor of the forest uses
an abiotic factor?
A Trees absorb water to serve as a product for photosynthesis.
B В
Insects eat and digest the leaves of trees.
Erosion of sedimentary rock adds phosphorous to the soil.
D Fungi release oxygen from trees back into the air.
Answer:
D
Explanation:
A pond has fish, crawfish, oysters, lilies, and algae. All these species represent the pond's __________.
Answer:
ecosystem i think
Explanation:
sorry if that didn't help
A pond has fish, crawfish, oysters, lilies, and algae. All these species represent the pond's ecosystem.
What is an ecosystem?All the organisms and the physical setting they interact with make up an ecosystem. The nutrition cycles and energy flows connect these biotic and abiotic elements. Photosynthesis is how energy enters the system and is absorbed by plant tissue.
Producers, consumers, and decomposers are the three groups of living things that make up an ecosystem. Each of them contributes significantly to the ecosystem. Forest, desert, rainforest, grassland, tundra, savanna, and mountain habitats are the main categories of ecosystems.
Hence, a pond has fish, crawfish, oysters, lilies, and algae. All these species represent the pond's ecosystem.
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69 points! Pls tell me where to put the star I will mark brainliest but If ur answer is unrelated I will report u. Place the STAR on the pioneer species.
Answer:
I believe it is the moss on the ground because moss can grow quickly and since a pioneer species is the first thing that came, it colonized first, like a pioneer. Have a nice day :)
Explanation:
What is the difference
between selective and cross breeding ?
Which of the following is a source of energy made from plant and animal remains?
Answer:
COAL
Explanation:
I GOT IT RIGHT
Can you please help me!!!
Which is not part of the basis of modern biological science?
anatomy
genetics
cell theory
evolution
Answer:
evolution is not part of modern biological science
What kind of weather are people living on the equator most likely to experience regularly
A. Cooler weather and less rain due to increased evaporation
B. Cooler weather and more rain due to decreased evaporation
C. Warmer weather and more rain due to increased evaporation
D. Warmer weather and drier conditions due to no evaporation
Answer:
D
Explanation: Think of africa.