Answer:
I can't definitively answer this because I don't know the experiment, but I can help.
Explanation:
The "control group" of an experiment is like a dry simulation, where there is no variables changed across all the different trials you do. This is different from a dependent variable or an independent variable. Using your newfound knowledge of what a control group is you can automatically cross off the last option.
Since I cannot see what your experiment was I can't give you which of the top 3 answers it is however. You need to look at which one has no change.
If I were to blindly guess I would say the top option seems like the most likely answer.
How would altering the ph of an ecosystem affect the organisms that live there? Relate to enzyme function.
In your response include why slight changes in pH are significant to living things.
Answer:
pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.
Hope this helps and if this is wrong sorry!!!
Q2: What are the three classes of mutations?
HIV is a
Multiple Choice
double-stranded DNA virus.
single-stranded RNA virus.
single-stranded DNA virus.
double-stranded RNA virus.
prion
Answer:
single strand RNA virus
Explanation:
HIV has pair of single strand of RNA
i have a question for you guys
Answer:
B. the birthrate of lions increases
Explanation:
What is the function of the seed (fertilized egg)?
Q#21 on pic
Answer: Seeds serve several functions for the plants that produce them. Key among these functions are nourishment of the embryo, dispersal to a new location, and dormancy during unfavorable conditions.
Explanation: i hope this answers your question nd have a nice day or night
process by which organisms with favorable variations survive and produce more offspring than well-adapted organisms
A. evolution
B. Natural Selection
C. Speciation
Answer:
B. Natural Selection
Explanation:
Any animal with the favorable qualities to survive is naturally able to produce more offspring than others. This is theory was first theorized by Charles Darwin with his Finch birds.
(P.S I don't know if thats the right kind of bird, but point is that it was a bird :D)
Hope this helps :)
Which of the following is not one of Mendel's Laws?
a) Law of Conservation of Mass
b) Law of Segregation
c) Law of Dominance
d) Law of Independent Assortment
Answer:
A
Explanation:
Law of conservation of mass was discovered by Lavoisier
Law of Conservation of Mass is not one of Mendel's Laws. Therefore, the correct option is A.
What are Mendel's Laws?Gregor Mendel's research with pea plants in the 19th century led him to reveal three fundamental laws of inheritance, known as Mendel's laws. There are three laws:
1. Law of Segregation: Each individual has two alleles for each trait, and this law indicates that these alleles separate (separate) during the development of gametes, or reproductive cells. This indicates that only one allele per trait is present in each gamete.
2. According to the law of independent assortment, the inheritance of one trait is independent of the inheritance of another. In other words, the segregation of alleles for one trait is independent of the segregation of alleles for the other trait.
3. The law of dominance states that when two different alleles are present in an individual, the dominant allele will dominate the recessive allele in terms of expression. Only when both alleles are recessive will the recessive allele be expressed.
Therefore, the correct option is A.
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Which of these places is an example of a freshwater ecosystem?
A. Lake
B. Coral reef
C. Rain forest
D. Desert
Answer:
Lakes (A)
Explanation:
I took the test
Which statements about the phylogenetic tree are true? select all that apply?
Answer: The question is not complete, here is the completed part gotten from other website.
Mammals and turtles are more closely related than are lungfishes and sharks. Hagfishes, lungfishes, and frogs have lobed fins.
Lancelets and coelacanths are more closely related than are chimaeras and coelacanths.
Organism (a) is a common ancestor of all chordates.
Descendants of organism (d) have limbs with digits. birds and ray-finned fishes have a notochord and jaws.
rays and frogs have vertebrae. organism (c) is a common ancestor of lampreys and lungfishes?
The correct options are;
Mammals and turtles are more closely related than are lungfishes and sharks.
Descendants of organism (d) have legs.
Rays and frogs have a vertebral column.
-Birds and ray-finned fishes have a notochord and jaws
Explanation:
This is because phylogenetic tree is a branching diagram that entails different evolutionary relationships that occur between organisms or biological species having common decent or ancestors and showing similar and differences in their genetic characteristics or traits. It shows how species evolved from their ancestors.
boild water is it convection radiation cunduction or convection
Answer: I think it’s Convection.
Answer:
Convection
Explanation:
Convection occurs in fluid, which means liquid or gas.
It is not Conduction as conduction occurs in solid through direct contact.
It is not Radiation because radiation is heat transferring through waves.
The chemical subunits called ________________ acids are joined together to form proteins.
HURRY DUE TODAY
The term for male and female reproductive structures found in separate flowers on the same plant is,
Group of answer choices
hermaphroditic
imperfect
monoecious
dioecious
Answer:
dioecious
Explanation:
The androecium is the sum of all the male reproductive organs, and the gynoecium is the sum of the female reproductive organs. If all four whorls are present, the flower is described as complete.
Identify In the Krebs cycle, what is pyruvate converted to?
Answer:
Breakdown of Pyruvate
After glycolysis, pyruvate is converted into acetyl CoA in order to enter the citric acid cycle.
Explanation:
The outer planets are also called the rock planets.
True
False
Answer:
false it is called gas giants or Jovian planets
Match the sensory characteristic with how it is coded by the nervous system. - Sensory modality - Location of the stimulus - Intensity of the stimulus - Duration of stimulus A. Which sensory neurons are activated B. Receptive fields C. Frequency of action potentials D. Duration of action potential train (i.e., continued firing of action potentials in sensory neurons) E. Size of action potential F. Duration of a single action potential
Answer:
a) Which sensory neurons are activated
b) Receptive fields
c) Frequency of the action potentials and size of action potential
d) Duration of action potential train and Duration of a single action potential
Explanation:
Sensory modality : The sensory modality is Which sensory neurons are activatedLocation of the stimulus : The location of the stimulus is in the Receptive fieldsIntensity of the stimulus : The Intensity of the stimulus represents the frequency of the action potentials and size of action potential Duration of stimulus : The duration of the stimulus is Duration of action potential train and Duration of a single action potentialWhat is NOT a function of the reticular formation?
a. sleep b. breathing c. memory d. pain transmission
Answer:
c. memory
Explanation:
Memory is not a function of the reticular formation. Sleeping, breathing, and pain transmission all are the functions of reticular formation. Thus, the correct option is C.
What is reticular formation?
Reticular formation is a part of the pons region of brain which controls the sleep-wake cycle and also filters stimuli to separate out relevant background stimuli from irrelevant ones.
Reticular formation is one of the phylogenetically earliest parts of the brain and it is crucial for controlling some fundamental processes such as sleeping, breathing, and pain transmission.
The reticular formation is an essential process for the numerous activities of the brainstem. It is located strategically amid the significant nuclei in the brain cells and the nerve fibers that traverse it. The reticular formation looks like an intricate web network.
Therefore, the correct option is C.
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Which of the following is not a function of stems?
Group of answer choices
anchorage
structural support
photosynthesis
water transport
Is water wet? Also does the straw have two or one whole?
Answer:
water is wet to the touch, and a straw has two holes
Who discovered that the planets revolved around the sun?
Copernicus
Lippershey
Gutenberg
da Vinci
Explanation:
it is COPERNICUS option A
Answer:
A
Explanation:
Which describes gyres in the northern hemisphere?
Answer:
In the Northern Hemisphere, the gyres rotate to the right (clockwise), while in the Southern Hemisphere the gyres rotate to the left (counterclockwise). There are five major gyres in the oceans; the North Atlantic, South Atlantic, North Pacific, South Pacific, and Indian (Figure 9.1.
Explanation:
Can someone help me fill them in that would be really helpful
Answer:
a - flower
b - ovule
c - fruit
d - embryo
e - seed
f - seedling
Explanation:
How will photosynthesis and respiration keep you alive, and what do you need to do?
Explanation:
While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere. The exchange of carbon dioxide and oxygen during photosynthesis (Figure below) and cellular respiration worldwide helps to keep atmospheric oxygen and carbon dioxide at stable levels. (hopefully this helps)
Many tree frog populations are threatened due to habitat loss. In an effort to promote conservation, tree frogs may be bred in captivity. A zoo acquired male and female tree frogs from two different populations. In the zoo, the tree frogs were able to successfully mate within their own population, but breeding attempts between the two populations were unsuccessful. Based on this information, which statement correctly describes the relationship between the two populations of tree frogs?
this is for biology test pleasee someone help
Answer: Same Genus but different species
Explanation: took the test and came back
The statement which correctly describes the relationship between the two populations of tree frogs is same genus but different species.
What are the characteristics of genus?A genus is a class or group of something. In biology, it's a taxonomic group covering more than one species. This is a term used by biologists to classify more than one species under a larger umbrella.
A species is defined as a group of organisms made up of similar individuals capable of interbreeding or exchanging genes. Genus: A genus is a taxonomic classification that includes closely related species.
Genus is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family.
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please anyone help me
Answer:
mutualism
hope it's right :)
GIVING 35 PTS AFTER U ANSWER IT MUST BE CORRECT A stalled front (not moving) that may bring many days of clouds and precipitation is a(n)____________.
Question 1 options:
cold front
warm front
occluded front
stationary front
Question 2 (1 point)
Saved
An air mass, shown in the image above, that forms over parts of Mexico, Texas, and Arizona will be a _______.
Question 2 options:
continental polar air mass
continental tropical air mass
maritime polar air mass
maritime tropical air mass
Question 3 (1 point)
Saved
Prevailing westerlies are global winds responsible for most weather in our region of the United States moving from west to east.
Question 3 options:
True
False
Question 4 (1 point)
What causes a land breeze at the beach?
Question 4 options:
At night, cooler air over land replaces rising warmer air over water.
At night cooler air over water replaces rising warmer air over land.
During the day, cooler air over land forces warmer air over water to rise.
Question 5 (1 point)
Based on the weather map above, which statement is true based on the weather map?
Question 5 options:
A warm front is moving toward South Carolina.
A warm front just passed through South Carolina.
It is currently raining in South Carolina.
The next few days in South Carolina should be colder.
Question 6 (1 point)
Saved
Which type of local wind is illustrated in the image above?
Question 6 options:
Global wind
warm wind
land breeze
sea breeze
it is a stationary front because the stationary fron does not move from one place.
Hox Genes:
A cow born in Russia has two tails. Which of the following most likely was the cause of this abnormality?
What other factors, besides distraction, might also decrease reaction times???? Good explanation…
Answer:
Lack of sleep.
Explanation:
Lack of sleep/tiredness is really bad for your reaction time.
Based on the information given, state ONE way the bag or its contents will have changed by the next day. Support your answer with an explanation. *
Answer:
The size of the bag will shrink due to movement of water molecules out of the bag into the beakerdue to osmosis.
Explanation:
The difference in concentration between two regions results in a phenomenon known as diffusion.
Diffusionnis the process by which molecules of a substance move from regions of higher concentration to regions of lower concentration until equilibrium concentration is reached by the two regions. Water molecules moves across regions of different concentration through a semipermeable membrane in a special form of diffusion known as osmosis.
Osmosis refers to the movement of water molecules from regions of high concentration (dilute solutions ) to regions of low concentration (concentrated solutions ) through a semipermeable membrane until equilibrium is attained.
The solution in the bag is less concentrated than the solution innthe beaker. The bag serves as a semipermeable membrane allowing water molecules to move out of it into the beaker due to the difference in concentration of the two solutions. As a result, the size of the bag shrinks while the level of the solution in the beaker rises as it becomes less concentrated.
What do you understand by membrane potential?
Answer: It is the difference in the electrical potential across a membrane
Explanation:
The pie chart shows us the annual diet of a typical black bear. The percentages are based on the approximate weight of the foods
eaten. How much more fish do bears eat compared to rodents?
A)
2x
B)
3x
10X
D)
30X
Answer:
B) 3X
Explanation:
3X Bears eat 3X more fish than rodents. Bears eat 5% rodents and 15% fish. That is a 1:3 ratio of rodents to fish or 3X more fish.