Answer:
B. The rose bushes without the deer repellent
Explanation:
In an experiment, the control group is often the group that is not exposed to the independent variable.
The control group is usually used for comparison between it and the experimental groups.
In this experiment, the rose bushes without the deer repellent are the control group.
As the control group, these rose bushes will be compared to the ones that have deer repellent.
The correct answer is B. The rose bushes without the deer repellent
You have formulated a hypothesis. Pineapples contain more vitamin C. than oranges. to test this hypothesis you measure vitamin C levels in 20 oranges and 20 Pineapples from trees that were grown in the same orchard under the environmental conditions, ( temperatures, rain, sunlight) select all the statements that are true about this experiment
a. The independent variable is temperature
b. the control group in the experiment is the oranges
c. The type of fruit is a controlled variable
d. The dependent variable is the vitamin C levels in the pineapples and oranges
Answer:
d. The dependent variable is the vitamin C levels in the pineapples and oranges.
Explanation:
Select all the statements that are true about this experiment.
a. The independent variable is temperature. NO, temperature, as well as rain and sunlight are controlled variables and are not being evaluated in the experiment.
b. the control group in the experiment is the oranges. NO, there is no control group in this particular experiment.
c. The type of fruit is a controlled variable. NO, the type of fruit is the independent variable.
d. The dependent variable is the vitamin C levels in the pineapples and oranges. YES. According to your hypothesis, the vitamin C levels depend on the type of fruit.
this is an easy science question please help
Assume that a flood washed out all of the plants in a large area along the bank of a river. It left behind
nothing but soil. How will ecological succession occur in this area?
Answer:
ecological succession in this area will washout and more danger to many citizens on that area.
Is it a good idea for humans colonize mars pls real answers :)
Answer:
I believe yes and no at the same time
Explanation:
If we do end up colonizing Mars, Earth could slowly get better as time goes on, but when we do colonize Mars, wont we just do the same thing we did to Earth?
Answer:
Yes it could be, here are the pros.. Colonizing Mars is one of the most promising backup plans for humanity . Mars is relatively close to our Earth . Colonizing Mars may become possible in just a few decades . Many celebrities support those plans . Many scientists advocate for this kind of backup plan . Extraction of additional natural resources . May help with the search for other life forms . We could learn as global human species . Humanity needs challenges to progress . Knowledge is power . May help to mitigate the overpopulation problem on Earth . Colonizing Mars is an image project . Future generations would be able to adapt quite quickly on Mars . May be a good long-term investment for institutional investors
But there are also some cons.. Colonizing Mars is extremely expensive . It takes a while to travel to Mars ; Lack of water may become a serious problem . Plenty of insecurity involved in this plan . Completely different living conditions . Humans need protective equipment before going outside . It’s freezing cold on Mars . Some people have to make the beginning . May not be justifiable from an ethical standpoint . Colonizing Mars may conflict with religion . Money can be better used to solve our problems on planet Earth . Some scientists believe that efficient live on Mars will not be possible . Quality of life on Mars would be much lower . Rather insecure food supply . Radiation may become a problem . Still unclear if living on Mars is sustainable . We would alter the balance in our universe . Colonizing Mars can be dangerous . Space exploration implies significant pollution . Other life forms may not be welcoming towards us humans . Short-term costs vs. long-term gains
In conclusion, no it would not be a good idea.
You make two agar plates: one is a nutrient agar plate (plate A) that contains histidine and penicillin. The other is a glucose salts agar (plate B) that also contains penicillin. You inoculate a sample onto both plates using replica plating technique, incubate the plates, and compare the growth after 48 hours. There are 12 colonies on the nutrient agar plate and 11 colonies on the glucose salts medium. Which of the following statements is INCORRECT?
a. The colony that is missing from plate B is an auxotroph that cannot synthesize histidine.
b. The prototrophs are resistant to penicillin but the auxotrophs are sensitive to this antibiotic.
c. Prototrophs and auxotrophs in this experimeſit are resistant to penicillin.
d. Approximately 92% of the bacteria in the original sample are prototrophs.
e. This experiment describes indirect selection of a mutant.
Will mark brainlist if answer is correct
Answer:
A. Magnetic field
Explanation:
Hope this helps
Which shows the correct order of processes for fungi to reproduce sexually
Answer:
C
Explanation:
What is one type of light that can be used for photosynthesis
Answer:
The majority of green light is useful in photosynthesis. The relative quantum efficiency curve (Photo 1) shows how efficiently plants use wavelengths between 300 and 800 nm. Green light is the least efficiently used color of light in the visible spectrum.
Explain how DNA supports the theory of evolution?
Answer:
Because there are tens of thousands of genes in humans and other organisms, DNA contains a tremendous amount of information about the evolutionary history of each organism. ... It determines evolutionary relationships among organisms, and it indicates the time in the past when species started to diverge from one another.
Maintaining high global biodiversity is important to provide ecosystem services to humans. Describe one cultural ecosystem service provided by diverse ecosystems.
Answer:
Ecosystem services of provision or supply
Explanation:
Ecosystem services
When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:
Provision or supply:These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials (such as salt), raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others. Provisioning service has an impact on the economy, as many of these products are used to commercialize.
Regulation:Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.
Cultural:Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, to learn, provide a spiritual/religious space, are a source of inspiration. Ecosystems are considered to be cultural patrimony. Ecosystems are the source of scientific knowledge.
Support:Involves ecological processes needed for the production of the other three previously mentioned services. There are five different support services:
→ Soil formation
→ Photosynthesis
→ Primary production
→ Nutrients cycles
→ Water cycle
Under certain circumstances, regulation services can also be considered support services.
Support service affects human beings indirectly, or direct but causing an effect in a long-term period.
g Cells called ________ influence development by controlling the fate of other cells in their local environment
Answer:
Neighboring Cells
Explanation:
Neighboring Cells are known to be the type of cells that influence development by controlling the fate of other cells in their local environment.
Typically Neighboring cells through the process often referred to as Induction simply influence the development of other cells nearby or in their local environment. This process of cell influence is either by direct cell-cell contact or through the release of practice chemical signals.
Hence, in this case, the correct answer is "Neighboring Cells."
Drag each label to the correct location.
Annie wants to study the effect of glucose on bacterial colonies. She grows two colonies of bacteria—one with glucose present in the environment and one in an environment without glucose. Categorize the statements about the experiment as either hypotheses or observations.
Glucose may cause
an increase in
bacterial growth.
The bacterial colonies grown
without glucose don’t have
capsules around their cells.
Bacterial growth in the
glucose environment
increased rapidly and
then stopped after
some time.
Increased glucose may
lead to capsule
formation in bacteria.
Reset Next
Answer:
* Glucose may cause an increase in bacterial growth - HYPOTHESIS
* The bacterial colonies grown without glucose don’t have capsules around their cells - OBSERVATION
* Bacterial growth in the glucose environment increased rapidly and then stopped after some time - OBSERVATION
* Increased glucose may lead to capsule formation in bacteria - HYPOTHESIS
Explanation:
In an experiment, a HYPOTHESIS is a predictive and testable statement that aims to answer a scientific question while an observation is made based on the results obtained.
According to this question, Annie wants to study the effect of glucose on bacterial colonies. She conducted the experiment by growing two colonies of bacteria - one with glucose present in the environment and one in an environment without glucose. Based on this experiment, the following statements are categorized as:
- Glucose may cause an increase in bacterial growth is a HYPOTHESIS
- The bacterial colonies grown without glucose don’t have capsules around their cells is an OBSERVATION
- Bacterial growth in the glucose environment increased rapidly and then stopped after some time is an OBSERVATION
- Increased glucose may lead to capsule formation in bacteria is a HYPOTHESIS
6. What regulatory processes would your body use if you were trapped by a blizzard in an unheated, uninsulated cabin in the woods (or in a heat wave with no air conditioning)
Answer:
Shivering and sweating.
Explanation:
A prolonged exposure to extreme cold environment would activate the brain's heat-gain center. Your brain's heat-gain center causes shivering in order to increase our muscle contraction which leads to warming of our body. Increase sweating is the regulatory processes our body use if it experience very high temperature. In order to regulate internal temperature of body, our body remove water which takes up heat with itself to lower th internal temperature.
naCI forms what when placed into water
Answer:
When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules.
Explanation:
na+ plus cl- plus heat
salt stays the same but adds some heat
In a eukaryotic cell in mitotic S-phase, a spontaneous DNA double-strand break occurred due to replication fork collapse. Genetic analysis indicates that the break was repaired by a non-crossover mechanism resulting in a stable genome. The DNA repair process responsible for this outcome was:
Answer: The DNA repair process was called recombination repair.
Explanation: A sister or homologous chromatide is used to generate recombination and be repaired in this sort of cases.
Fast environmental change can be caused by and
I mean global warming is pretty fast ngl
Stacy has two fruits one is scaly with a few buds and the other has a hairy structure. Which parts of the vegetable plant did she buy?
Answer:
So, the first part of Stacy's vegetable is definitely turbous stem. The other part must be root, because it has hairy structures. These hair-like structures have function in the absorption of water and minerals from the soil.
7. Scrie metoda corectă de separare a substanțelor corespunzătoare următoarelor
amestecuri:
Amestecuri
Metode de separare a amestecurilor
Boabe de fasole și apă
Plante medicinale în ceai
Resturi menajere din chiuvetă TE ROG REPEDE DAU COROANA LA PRIMUL CARE RASPUNDE‼️‼️‼️
Answer:
por favor, ingles para bio
Explanation:
can increase biodiversity. (1 point)
O Changes in temperature
O Decreasing the food supply
O Limiting mates
O Protecting land
Biodiversity is the variety of life habiting the earth's ecosystem with numerous genetics and ecosystem levels. Protecting lands will increase biodiversity.
What is biodiversity?Biodiversity is the variety of living organisms living together in an area, that works together in an ecosystem to support life and maintain the population.
Biodiversity is affected by the temperature, food, reproduction rate, and habitat. Protecting the habitats will increase biodiversity.
Changes in temperature will affect biodiversity negatively, and decreasing food and reproduction ability will decrease the population of the biodiversity.
Therefore, option D. protecting lands can increase biodiversity.
Learn more about biodiversity here:
https://brainly.com/question/23037354
what is evolution?...
Answer:
Evolution is an adjustment of the heritable attributes of natural populaces over progressive ages. These attributes are the outflows of qualities that are given from parent to posterity during generation. There are also three main types of evolution: divergent, convergent, and parallel evolution.
Explanation:
A group of researchers wants to determine the most effective antibiotic for killing the disease causing bacteria E. coli. They select 5 different antibiotics and determine how many cells were killed at the end of the experiment. The dependent variable in this experiment would be
Answer:
Number of cells killed at the end of the experiment
Explanation:
In research, the dependent variable is one whose value is dependent on another variable - a variable that is supplied by the researcher during the course of the experiment which is also known as the independent variable.
In this case, since the main objective of the research was to determine the most effective antibiotic against the E. coli, the variable that is supplied by the researcher (the independent variable) is, therefore, the different antibiotics while the variable whose value varies based on which of the antibiotics is introduced is the number of dead bacterial cells.
Therefore, the dependent variable is the number of cells killed by each antibiotic.
What's one nonmedical way that a society can slow down the spread of influenza?
antibiotics
quarantines
vaccines
antivirals
Answer:
C
Explanation:
Some tRNAs contain inosine, which can base pair with A, C, and U. Why might this be advantageous with regards to the genetic code
The tRNAs contain I sound that base pair A C U advantageous to the species rabbit.
What is tRNA?A form of RNA molecule called transfer ribonucleic acid (tRNA) aids in the translation of a messenger RNA (mRNA) sequence into a protein.
Translation, which creates a protein from an mRNA molecule, uses tRNAs at particular locations on the ribosome. A protein's amino acid composition is determined by codons, which are three-nucleotide mRNA sequences.
Every codon corresponds to a distinct amino acid, and every codon is accepted by a particular tRNA. The three hairpin loops that make up the tRNA molecule's characteristic folded structure give it the appearance of a three-leafed clover.
Therefore, The tRNAs contain I sound that base pair A C U advantageous to the species rabbit.
To learn more about tRNA, refer to the link:
https://brainly.com/question/29775087
#SPJ6
Suppose a new species of shark is discovered, and the dorsal fin length is found to be determined by additive alleles at three independently assorting loci (A, B, and C). The dorsal fin length of aabbcc sharks is 12 cm, and the dorsal fin length of AABBCC sharks is 30 cm. Assuming that the alleles contribute equally, what will be the length (in cm) of the dorsal fin of an animal with genotype AAbbcc
Answer:
The length of the dorsal fin of an animal with genotype AAbbcc is 18 cm
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
Which of the following species would have the greatest chance of going extinct?(1 point)
a species with a fast reproduction rate and lots of genetic variation living in a changing environment
a species with a fast reproduction rate and lots of genetic variation living in a stable environment
a species with a slow reproduction rate and very little genetic variation living in a changing environment
a species with a slow reproduction rate and very little genetic variation living in a stable environment
Extinction of the species refers to the death of the total species from the planet. The species with a slow reproduction rate and little hereditable variability habiting changing conditions will extinct first.
What factors influences the extinction rate?Many biological factors affect the survival of the organism as they play the most crucial role in the life and death of the species. The organism's reproduction rate, genetic modification and variability affect the survival of the organism.
The species that have a high rate of reproduction and high genetic variation can survive and continue their lineage when the surrounding habitat or the environment is altered or modified as they have better traits and characters.
The species in a changing environment with slow reproducing capability and very less genetic modification and variation will reduce the survival and adaptation chances of the organism and are more likely to go extinct first compared to the other organisms.
Therefore, option c, slow reproduction and less genetic variation in the species will go extinct first.
Learn more about extinction and genetic variability here:
https://brainly.com/question/23425661
a substance has a volume of 20 mL and a destiny of 2.5 g/mL what is its mass
A biologist grows bacterial cultures to see if there is a relationship between time and growth rate. Here are the data. Which hypothesis test would you use to see if there a relationship between growth rates and time
Answer:
Direct relationship.
Explanation:
There is direct relationship between growth rates and time which means growth rate of organism increases with the passage of time. Direct relationship means if one increases the other automatically increases and if one decreases, the other also decreases. The growth of bacteria becomes double when more time passes and vice versa. After every 20 minutes, the population of bacteria becomes double.
_The endplate potential (EPP) at the frog neuromuscular junction occurs because ACh simultaneously increases the conductance of the postsynaptic membrane to Na and K
Complete question:
The endplate potential (EPP) at the frog neuromuscular junction occurs because ACh simultaneously increases the conductance of the postsynaptic membrane to Na and K
TrueFalseAnswer:
TRUE
Explanation:
The Acetylcholine neurotransmitter is released from the presynaptic cell by the process of exocytosis.
Once the molecule is in the intercellular space, it moves forward the postsynaptic membrane to join its receptor in the motor plate.
Once the joining has occurred, the receptor acquires a channel shape allowing the ion transference that will make possible the modification of the action potential. Ions traffic will consist of the pass of sodium and calcium to the interior of the cell and potassium to the exterior. Quantitatively, the interchange Na-K is the most significant.
K+ follows a concentration gradient, while Na+ follows an electrochemical gradient. The interchange results in an increase of positive charges in the interior of the muscular cell.
Whenever there is a sufficient number of Acetylcholine receptors are active, the depolarization threshold of the motor endplate is exceeded. This activates an action potential that extends to the rest of the muscle membrane.
formula to calculate marginal rate of substitution
Answer:
(MRSxy) = ∆Y/ ∆X
Explanation:
In fruit Flies a white eyed female is crossed with a red eyed male. What are the changes the offspring will be a white eyed male?
Answer:
the chances of the offspring having white eyes is 50%
Explanation:
i used a punnet square to calculate the output:)
Answer:
25%
Explanation:
There's a 50% chance of the offspring being male & 50% chance female. The genotypes must be co-dominant otherwise their question doesn't give enough information to get an anwser. Also a 50/50 chance of red/white, so added together a 25% chance.
Also, the funny thing is that remember this from 7th grade so you must be reviewing things that evreyone learned a long time ago but forgot.
About how long did it take to grow the last 20 cells?