Answer:
An experiment where an antibiotic is tested against bacteria. The antibiotic can vary in its concentration for example, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.
Explanation:
An independent variable is a variable that represents a quantity that the scientist modifies in an experiment. A dependent variable represents a quantity whose value depends on how the independent variable is modified. This is the variable being studied and measured.
So, an example of this applied to bacteria or viruses could be:
An experiment where an antibiotic is tested against bacteria. The antibiotic can vary in its concentration, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.
To complete the experiment, an antibiotic whose effect is already known can be used as a positive control. That is, it is already known to kill the bacteria. And as a negative control you can simply use water, which has no effect and is known not to kill the bacteria. In this way, we validate the results and make sure that there is not something else that is affecting the bacteria and that only the antibiotic being studied has an influence.
The Milky Way galaxy was given its name because of what it looks like when viewed from Earth.
True False
Answer:
false. we cant see the whole galaxy from earth.
Answer:
the answer is false
Explanation:
we can't see the milky way (galaxy) from earth, its impossible since its so far away. unless we used a telescope maybe, not sure but for this question its false. I hope this helped!
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What do we call an organism that is not native to an environment, but is able to thrive anyway?
Answer:
An invasive species
Explanation:
Invasive species come from other environments, many times on accident, but usually thrive so much that they end up taking over and starving other native creatures by taking the resources. Hope this helps! (Brainliest appreciated :))
Suppose the phloem of a seed plant is damaged and does not function properly.
How will this most directly affect the plant?
Answer:
Food will not be carried away from the leaves
Explanation:
The relationship that occurs between an orchid attached on a narra tree could be
classified as Commensalism and Parasitism. True or false?
Answer:
Yes, it's True
Explanation:
A parasitic relationship helps one of the species involved in the relationship, but harms the other organism in the process of it growing. It is a symbiotic relationship and would be classified as Commensalism. Most of the orchids are epiphytes, so they tend to grow on other plants. hope you understand. Fighting!
The relationship that occurs between an orchid attached on a narra tree could be classified as Commensalism. Thus, the given statement is true.
What is Commensalism?Commensalism is a long-term biological interaction or symbiosis in which the members of one species gain benefits which help them in survival while those of the other species are neither benefitted nor are harmed from the association.
In contrast with mutualism, in which both the organisms benefit from each other and amensalism, where one species is harmed while the other species is unaffected and that of parasitism, where one species is harmed and the other species benefitted.
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Please help only 2 questions, multiple choice
Drag the tiles to the correct boxes to complete the pairs.
Match the mRNA sequences to their DNA sequences.
the frequency of a wave in a stretched string depends on the length L, tension T and linear density m with dimension ML-1 . deduce the formula for f in terms of L , T and M using dimensional analysis
Answer:
[tex]f = \frac{1 }{L}\sqrt{\frac{T}{m} }[/tex]
Explanation:
Let the frequency ,
[tex]f = L^{x}T^{y}m^{z}[/tex]
Now the unit of frequency is hertz = s⁻¹ = T⁻¹ where T is time, tension T = kgm/s² = MLT⁻¹ and linear density m = kg/m = ML⁻¹.
So,
[tex]T^{-1} = L^{x}[MLT^{-2} ]^{y}[ML^{-1} ]^{z}\\[/tex]
collecting the like bases, we have
[tex]T^{-1} = [L^{x + y -z}][M^{y + z} ][T^{-2y} ] \\L^{0} M^{0} T^{-1} = [L^{x + y -z}][M^{y + z} ][T^{-2y} ][/tex]
Equating powers on both sides, we have
x + y - z = 0 (1)
y + z = 0 (2)
-2y = -1 (3)
From (3), y = 1/2
From (2), z = -y = -1/2
Substituting y and z into (1), we have
x + y - z = 0
x + 1/2 - (-1/2) = 0
x + 1/2 + 1/2 = 0
x + 1 = 0
x = -1
So,
[tex]f = L^{x}T^{y}m^{z}\\f = L^{-1}T^{\frac{1}{2} }m^{\frac{-1}{2} }[/tex]
[tex]f = \frac{1 }{L}\sqrt{\frac{T}{m} }[/tex]
Brady took a cutting from a sweet potato vine in his family garden and placed the vine in a small vase filled with water. After about a week, tiny roots had begun to grow. What is this an example of
Answer:This is an example of asexual reproduction.
Explanation:
Reproduction is defined as the ability of living organisms to produce offspring, that is, new individuals of their type. Living organisms have developed many methods of reproducing. These can be either ASEXUAL or SEXUAL.
Asexual reproduction: In asexual reproduction, an individual produces an offspring by itself, that is, only one parent is present. This type of reproduction is common among flowering plants. Examples of asexual reproduction includes:
--> Fission
--> Budding
--> Spore formation
--> Fragmentation and
--> Vegetative propagation.
The sweet potato vine is reproduced by an asexual means known as vegetative propagation. Here, a new plant grows from any portion of an old one other than the seeds. When stem cutting are taken from the vine, new storage roots are formed within few days.
Brady took a cutting from a sweet potato vine in his family garden and placed the vine in a small vase filled with water. After about a week, tiny roots had begun to grow which is an example of - Asexual reproduction.
Asexual reproductionis a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes.Examples of asexual reproduction include: Fission Budding Spore formation Fragmentation and Vegetative propagation.In the given scenario sweet potato is cultivated by vegetative propagation.Brady takes stem cuttings from the vines, which then root and form new storage roots.Sweet potatoes are relatively easy to propagate by rooting vine cuttings directly in the ground or in a well-drained rooting mediaThus, The given case shows an example of - asexual reproductions.
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Neurons that respond to specific types of lines are examples of:
A. figure detectors.
B. top-down processors.
C. feature detectors.
D. figure processors.
Answer:
C
Explanation:
Neurons that respond to certain types of lines are examples of feature detectors found in Option C. Neurons are the monomeric units of the nervous system that play an important role in transmission.
What is the importance of the neuron?
The neuron is a unit in which the message is transmitted from the neuron to another neuron, and this can be done by either chemical signaling or by electric signaling. The neuron receives sensory stimuli from the sensory organ and transmits them to the spinal cord.
Later, the message from the spinal cord is sent to the motor organs, and the whole pathway of the neuron signaling from the sensory to the motor organ is called the reflex arc. The neuron takes part in the signaling process so that the muscle can function, regulate the contraction relaxation, and perform many other functions.
Hence, neurons that respond to certain types of lines are examples of feature detectors found in Option C.
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What's the role that oysters play in keeping the ratio of floating algae to sea floor algae levels of the bay healthy
Answer:
Oysters were keeping the nutrient levels relatively stable in the bay by filtering the nutrient sewage, animal waste, and fertilizer that was running into the bay.
Explanation:
Choose which statement best describes an element.
A. Anything that takes up space
B. A pure substance that cannot be broken down into other substances by chemical means.
C. Water
D. Atom has a nucleus with neutrons and protons in it.
Answer:
B
Explanation:
Elements are pure substances that cannot be broken down into other substances by chemical means .
Please help due in 10 minutes!
Explain how genetic drift of alleles in a small population- and- describe 2 real world examples of genetic drift (I.e. The Founder Effect and The Bottleneck Effect)
Answer:A small population is formed with a larger population.
Explanation:The population don’t represent the genetic diversity’s of the original
Population, and there smaller size mean they may experience strong drift of generations.
If you wanted to find an ant's stomach, where would
you look?
a. Inside its head
b. Inside its cephalothorax
c. Inside its thorax
d. Inside its abdomen
Answer:
d. Inside its abdomen
Explanation:
Hope this helps!
What does the brain stem do?
Answer:
It connects the rest of the brain to the spinal cord, which runs down your neck and back. The brain stem is in charge of all the functions your body needs to stay alive, like breathing air, digesting food, and circulating blood.
Explanation:
How can you determine the number of bonds an atom can make
Answer:
The number of bonds for a neutral atom is equal to the number of electrons in the full valence shell (2 or 8 electrons) minus the number of valence electrons. This method works because each covalent bond that an atom forms adds another electron to an atoms valence shell without changing its charge.
1. How many kinds of nitrogen bases does a DNA molecule have?
A. 2
B. 3
C. 4.
D. 1
Answer:
4.
Explanation:
Adenine, Thymine, Cytosine, and Guanine
(In RNA Thymine is replaced with Uracil)
There is the picture to the question
Answer:
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
Which amino acids are coded for from the DNA sequence TACCAGCCA?
methionine, valine, and glycine
methionine, glutamine, and alanine
methionine, valine, and aspartic acid
arginine, histidine, and cysteine
Where do the instructions for building a protein originally come from?
tRNA
rRNA
DNA
mRNA
A _______________ is composed of a series of amino acids.
Molecule
Protein
Nucleotide
Cell
Explanation:
DNA
The instructions for building a protein originally come from DNA, which is the store for all hereditary information.
A protein is composed of a series of amino acid.
Why would the atomic number be better to identify an element than the atomic mass?
Answer:
because the atomic number tells you how many protons and neutrons there are
Explanation:
Does mass alone determine whether an object will float or sink? Explain
Answer:
yes because if the mass is heavy it gonna sink, if its light its gonna float
Explanation:
What happens during the pathway of glycolysis?
A. Glucose is broken down into private
B. Carbon dioxide is produced
C. More ATP is consumed than is produced.
D. Lactic acid is produced
Answer:
the correct answer is A :Glucose is broken down into pyruvate
Answer:
If I'm correct, the glucose is broken down into pyruvate and energy.
Explanation:
I hope this helps! ^^
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A dichotomouys key is used to identify a plant. 1a. Leaves are spiny ......................Pinus taeda 1b. Leaves are broad..................... Go to 2 2a. Single leaf..........................Go to 3 2b. Many leaves....................... Go to 4 3a. Leaf edge is smooth..............Cornus florida 3b. Lead edge is rough...............Ulmus americana 4a. Leaflet edges are smooth........Albizia julibrissin 4b. Leaflet edges are rough.........Juglans nigra A plant has many broad leaves with rough edges. What type of plant is this? (1 point)
albizia julibrissin
pinus taeda
cornus florida
juglans nigra
Answer:
juglans nigra
Explanation:
I did my research and its correct I finished the quiz
1 B
2 C
3 D
4 C
5 A
The plant identified by the dichotomous key is juglans nigra.
What is a dichotomous key?A dichotomous key is a tool used to identify any plants and animals in the ecosystem.
They are identified by their morphological traits.
The key is made up of a set of paired assertions or clues about the qualities or attributes of the organisms.
It serves as a step-by-step guide to identifying each object.
Thus, the correct option is D, juglans nigra.
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what are the pros and cons of online school
Answer:
The Pros and Cons of Studying Online
Pro: Increased Flexibility. The biggest advantage to studying online is the increase in flexibility. ...
Con: Reputation. Many firms and institutions are quick to dismiss an online education. ...
Pro: Ease of Access. ...
Con: Lack of Social Interaction. ...
Pro: More Affordable. ...
Con: Fewer Courses.
Pros of Online Schools:
Time flexibility.
Availability.
24/7 access to course material..
Location flexibility.
Zero commute.
Self-Direction.
Multi-media presentations.
Variety of course options.
Cons of Online Schools:
Limited interaction with instructor.
Technology requirements.
Social interaction.
Campus environment.
Time management.
Stigma.
Credit transfer.
Financial aid.
Have a wonderful day!
7. Which of the following is not an example of an abiotic factor?
O Water
O Soil
O Disease
O Air
Please help
Answer:
Disease
Explanation:
Water, Soil and Air are all biotic except for disease.
What is true about the insanity defense?
It is defined in the Diagnostic and Statistical Manual of Mental Disorders.
It can be used only if a person is diagnosed with a specific disorder from the DSM.
It is a legal term used to determine if a person can be held accountable for a crime.
It is a legal term that helps to determine if a person committed a crime or not.
It cannot be used if a person was previously found to be responsible for a different crime.
It's a legal term used to determine if a person can be held accountable for a crime. Hope this helps; have a wonderful day.
Answer fast please. !!!!!!!!!!!!!!!!!!A geologist who needs to curricula to rock formations in different areas can match exposed rock layers
true or false
Answer:
A geologist who needed to correlate two rock formations in different areas could match exposed rock layers? A geologist who needed to correlate two rock formations in different areas could match exposed rock layers. TRUE.Explanation:
Answer:
true
Explanation:
what is combination reaction?
COMBINATION REACTION:
Combination reaction is a reaction where two or more elements or compounds combine to form a single compound. Such reactions are represented by equations of the following form: X + Y → XY. The combination of two or more elements to form one compound is called combination reaction
An example could be lithium reacting with sulfur to give lithium sulfide. When magnesium burns in air, the atoms of the metal combine with the gas oxygen to produce magnesium oxide.
If a strand of DNA has the nitrogen base sequence, GCTAGATGCG, what will be
the sequence of the complementary strand?
Answer:
CGATCTACGC
Explanation:
The complementary strand of DNA to GCTAGATGCG is CGATCTAGCT.
The nitrogen bases in DNA are complementary to each other. This means that adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C).
The strand of DNA GCTAGATGCG has the following sequence of nitrogen bases:
G - guanineC - cytosineT - thymineA - adenineG - guanineA - adenineC - cytosineG - guanineThe complementary strand of DNA will have the following sequence of nitrogen bases:
C - cytosineG - guanineA - adenineT - thymineC - cytosineT - thymineG - guanineC - cytosineThe complementary strand is created by pairing the nitrogen bases in the original strand with their complementary bases. So, the guanine in the original strand pairs with the cytosine in the complementary strand, the cytosine in the original strand pairs with the guanine in the complementary strand, and so on.
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How does an organism obtain CO2, H2O, and energy
to undergo photosynthesis?
Answer:
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight.
Explanation:
By taking in water (H2O) through the roots, carbon dioxide (CO2) from the air, and light energy from the Sun, plants can perform photosynthesis to make glucose (sugars) and oxygen (O2).
HELP ASAP PLS IF U ANSWER U GET 40 POINTS THANKS
Explanation:
The grass help feeds the baboon. This means the baboon will have to poop out the grass. Then the dung bettle feeds off of that poop.
