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Answer: C that protists are single-celled organisms
Explanation:
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Related Questions
4. Which task in the a salon is an example of a chemical change?
A. Cutting hair
B. Dying hair a different color
C. Shaving hair
D. Washing a comb in disinfectant
HELP NOWWWWW
Answers
Answer:
B. Dying hair a different color
What is parturtion and lactation???
Answers
Answer:
It is the process of production of milk by the mammary glands at the end of pregnancy. The milk produced initially by the glands is called colostrum. This milk is crucial for the baby as it provides the child with the initial immunity. This was a brief explanation of pregnancy, parturition, and lactation.
Explanation:
i hope this helps.... I found these
In the DNA double helix, archaic pairs with thymine and cytosine pairs with
guanine.
True or false?
Answers
Answer:
False
Explanation:
'Adenine' pairs with thymine and cytosine pairs with guanine in a DNA double helix.
It is false that in the DNA double helix, archaic pairs with thymine and cytosine pairs with guanine.
What is DNA double helix?In molecular biology, the structure created by double-stranded molecules of nucleic acids like DNA is referred to as a "double helix."
A nucleic acid complex's double helical structure develops as a result of its secondary structure and plays a crucial role in establishing its tertiary structure.
One of the four bases—adenine (A), cytosine (C), guanine (G), or thymine—is joined to each sugar (T).
Adenine forms chemical bonds with thymine while cytosine forms chemical bonds with guanine to join the two strands together.
A broad head, prominent supraorbital ridges (brow ridges), and the absence of a prominent chin are characteristics of archaics that set them apart from anatomically modern humans.
Thus, the given statement is false.
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The University of Illinois has been conducting one of the longest selection experiments, begun in 1896 by C.G. Hopkins. Researchers have been selecting for high corn oil content (as measured in % dry mass). Researchers select those plants with the highest corn oil content, and use only those individuals to seed the next generation. Here is a portion of actual data from their experiment:
1899 mean oil content in entire population: 5.65% dry mass
mean oil content of selected plants: 6.30% dry mass
1900 mean of oil content in entire population: 6.10% dry mass
Calculate the heritability of corn oil content (% dry mass). For full credit, show your work, including any equations used.
Answers
Answer:
0.725
Explanation:
This type of question is a concept of Narrow-sense Heritability and Artificial selection used by plant breeds.
So, heritability = R/S
where;
R = response to selection
S = selection differential
S further implies the difference in mean oil content between base population & selected population.
S = 5.65 - 6.30 = 0.65% ( where the negative sign are not regarded)
R implies the difference in mean oil content between the offspring or population after implementation of selection and the base population.
R = 6.10 - 5.65 = 0.45%
∴
Heritability = R/S = 0.45% / 0.6%
= 0.725
Thus; the heritability in the oil content of corn in the given set of population = 0.725.
We have 13 different clotting factor proteins in our blood. Do you think hemophilia is controlled by one or multiple genes?
Answers
Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern . The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes . In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the condition. Basically it's whatever you believe it is.
PLEASE HELP ASAP
how does the ribosome read the mRNA?
Answers
Answer:
A ribosome is made up of two basic pieces: a large and a small subunit. During translation, the two subunits come together around a mRNA molecule, forming a complete ribosome. The ribosome moves forward on the mRNA, codon by codon, as it is read and translated into a polypeptide (protein chain).
Explanation:
See below, b represents
Options
water
glucose
oxygen
CO2
Answers
Answer:
CO2
Explanation:
CO2 is needed to produce glucose
BRAINLIEST: In dolphins, to have spots on the skin is a recessive trait. One spotted dolphin and one solid gray dolphin have a baby spotted dolphin. Go through the following steps to figure out the genotype of the parent dolphins.
1) what are the POSSIBLE genotypes of the solid grey dolphin?
2) what is the genotype of the baby spotted dolphin?
Answers
Answer:
1) Ss
2) ss
Explanation:
Spots (recessive) - s
No spots (dominant) - S
So the possible combination to get a baby spotted dolphin may be: Ss and ss
Punnett Square:
| S | s |
s | Ss | ss |
s | Ss | ss |
So the genotype of the Solid gray dolphin might have been a dominant allele and a recessive allele, which is Ss.
Moreover the genotype of the spotted baby dolphin might me ss.
It is estimated that the world human population reached 3 billion people in 1959 and 6 billion in 1999. Assuming a carrying capacity of 16 billion humans, write and solve the differential equation for Gompertz growth, and determine what year the population reached 7 billion. Was logistic growth or Gompertz growth more accurate, considering world population reached 7 billion on October 31,2011
Answers
Answer:
i ) Gompertz equation :
[tex]\frac{dP(t)}{dt} = \alpha In ( \frac{K}{P(t)} )P(t)[/tex]
ii) The year that population reaches 7 billion is 2013
iii) The logistic growth was more accurate
Explanation:
i) write and solve the differential equation for Gompertz growth
Gompertz equation :
[tex]\frac{dP(t)}{dt} = \alpha In ( \frac{K}{P(t)} )P(t)[/tex]
∝ = growth rate
k ( carrying capacity ) = 16 * 10^9
P(t) = population at time t
ii) Determine what year the population reached 7 billion
The year that population reaches 7 billion is 2013
solution attached below
iii) Determine if logistic growth or Gompertz growth was more accurate considering world population reached 7 billion on October 31,2011
The logistic growth was more accurate because the when Logistic growth model was used, the year in which the population reached 7 billion was 2010 and this value is more closer to 7 billion on October 31 2011 ( given value )
Caenorhabditis elegans is a species of soil-dwelling nematode (roundworm) that feeds on soil bacteria, including Bacillus thuringiensis.
a. True
b. False
Answers
Answer:
b. False
Explanation:
Caenorhabditis elegans is a well-known species which is widely used in genetic experiments (i.e., it is a model organism). C. elegans is a soil nematode that eats bacteria, but its survival depends on the ability to distinguish toxic from non-toxic ones. C. elegans cannot feed Bacillus thuringiensis because this bacterium produces a toxin Bt protein that damages its gut, thereby producing the death of this nematode. Interestingly, it has been proposed that Bt toxin pathways might be exploited for the design of new generation nematicides.
how does the structure of simple squamous cells allow it does to its function?
Answers
Answer:
Structure of the simple squamous epithelium
The cells appear like scales that provide a smooth low-friction surface over which fluids can move quickly. Membrane carrier proteins are found in this layer that function to facilitate the movement of ions, gases, small molecules, or water through the cells.
Which circulation ensures proper levels of nutrients in the blood for newborns through adults?
а a
cardiac circulation
b
fetal circulation
С
hepatic portal circulation
d
pulmonic circulation
Answers
3. The power produced by an electric motor is 400W. How long will it take the motor to do 10,000 J of work?
Answers
Answer:
25 seconds
Explanation:
Energy = Power × Time
Rearrange the equation, since we have to find time.
Time = Energy ÷ Power
Time = 10000 ÷ 400
Time = 25 s
Leaves of a healthy potted plant were coated with Vaseline to block stomata. Will this plant remain healthy for long? State three reasons for your answer.
Answers
➜ If waxy coating is made on the surface of leaf, loss of water in the form of water vapour does not take place. Even the gaseous exchange will not take place. So, photosynthesis will either be reduced or will not take place.
The plant will not remain healthy for long because:
[i] Exchange of gases will not take place.
[ii] Photosynthesis will either be reduced or will not take place due to lack of CO2.
[iii] Transpiration will not take place, so there will be no mechanism of cooling in hot weather.
5. Most Sex-linked disorders like hemophilia and colorblindness are located on *
Answers
Answer:
Either the X or Y chromosome (the sex chromosomes)
Explanation:
Color blindness, hemophilia and muscular dystrophy are three x-linked phenotypes.
What is a pill bugs habitat
Answers
Answer:
The pillbug's main habitat is under mulch, fallen leaves, and rocks. Pillbugs are nocturnal and require humid conditions during the day. Pillbugs are generally found in soil with sowbugs, millipedes, and earthworms. Their preferred soil habitat is composed of organic matter and has a neutral to alkaline pH.
Do you think humans would be
as dominant if the dinosaurs
were still present?
Answers
Answer:
Probably not, as we might have evolved to become prey instead of predator
Answer:
i dont think so.
Explanation:
the dinosaurs would've already ate us, and crushed the cities. dinosaurs are too dangerous for us. especially the T-rex.
Help me please!!!!!!!!!
Answers
Answer:i think its b
Answer:
B
Explanation:
What is an antiviral drug? Why is it different from an antibiotic?
Answers
Answer: Unlike most antibiotics, antiviral drugs do not destroy their target pathogen; instead they inhibit its development.
What is biomass burned to produce
Answers
Answer:
Burning either fossil fuels or biomass releases carbon dioxide (CO2), a greenhouse gas. However, the plants that are the source of biomass for energy capture almost the same amount of CO2 through photosynthesis while growing as is released when biomass is burned, which can make biomass a carbon-neutral energy source.
Which of the following is an example of how climate change has led to loss of biodiversity?
Select one:
A Lizard species are moving to higher elevations to seek cooler temperatures.
B Rising temperatures allow Arctic mosquitos to grow faster and emerge earlier.
C Populations of octopus, squid, and other cephalopods are increasing due to their adaptability to warmer ocean temperatures.
D Rising sea temperatures have led to a decline in phytoplankton populations.
Answers
Describe how hibernation has helped bear species to survive.
write your answer in form of a claim, evidence, and reasoning statement.
1.Make a claim to answer the question(restate your question).
2.Give evidence to support your claim(my evidence is).
3.Use reasoning to explain how your evidence supports you claim(this shows).
ty please no scams brainliest also to the first person who answers and at least 5 sentence answer ty.
Answers
During hibernation, the animal’s body temperature, heart rate and breathing rate all drop to significantly lower levels. Animals do this to survive the winter because the weather is cold and food is scarce. It is advantageous because these animals can quite literally shut themselves off for weeks at a time rather than try and survive through harsh weather conditions.
While many people think bears are hibernators, they actually participate in a similar, though not exact, practice. Instead of hibernating, bears fall into a deep sleep called torpor. During torpor, heart rate and breathing rate decreases, body temperature reduces slightly and bears do not eat or release bodily waste. Bears can sleep more than 100 days without eating, drinking, or passing waste!
Bears sleep in dens that they make themselves, as well as in hollow trees, caves and dens built by other bears. A den can be built in 3–7 days, however, the timing of den building varies from bear to bear. While some bears build their dens months before hibernation season, others choose to excavate their dens.
These animals can dramatically drop their body temperature to below freezing—salty body fluids work to prevent tissue crystallization in particularly cold temperatures.
So really, animals that are true hibernators don’t actually sleep through the entire winter.
The urea produced by their fat metabolism is broken down and the nitrogen is re-used by the bear to rebuild protein.
Answer:
Hibernation helps animals survive the changing seasons. Foods that bears eat, such as berries and flowers, are much less available during cold winter months. When they hibernate, bears enter a deep sleep. ... While they sleep, the bears can survive because their bodies live off of their stored fat or food.
During hibernation, the animal’s body temperature, heart rate and breathing rate all drop to significantly lower levels. Animals do this to survive the winter because the weather is cold and food is scarce. It is advantageous because these animals can quite literally shut themselves off for weeks at a time rather than try and survive through harsh weather conditions.
While many people think bears are hibernators, they actually participate in a similar, though not exact, practice. Instead of hibernating, bears fall into a deep sleep called torpor. During torpor, heart rate and breathing rate decreases, body temperature reduces slightly and bears do not eat or release bodily waste. Bears can sleep more than 100 days without eating, drinking, or passing waste!
Bears sleep in dens that they make themselves, as well as in hollow trees, caves and dens built by other bears. A den can be built in 3–7 days, however, the timing of den building varies from bear to bear. While some bears build their dens months before hibernation season, others choose to excavate their dens.
These animals can dramatically drop their body temperature to below freezing—salty body fluids work to prevent tissue crystallization in particularly cold temperatures.
So really, animals that are true hibernators don’t actually sleep through the entire winter.
The urea produced by their fat metabolism is broken down and the nitrogen is re-used by the bear to rebuild protein.
Explanation:
In the fantastic Jillalope, the offspring of a true-breeding black parent and a true-breeding white parent all appear gray. When these gray offspring are crossed among themselves, their offspring always appear in a ratio of 1 black : 2 gray : 1 white. Upon close examination of the coats with a magnifier, each hair of a gray animal has closely-spaced alternating black spots and white spots, but no gray spots. What is the mode of inheritance
Answers
Answer:
Co-dominance
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
What can result when winds blow across ocean water
Answers
10. What is an entomologist?
Answers
Answer:
An entomologist is a person who studies, or is an expert in the branch of zoology. (A branch in zoology concerned with insects.)
Explanation:
What are some inherent traits of a lion
Answers
There are thirteen species of finch found on the Galapagos Islands. These finches are commonly referred to as “Darwin’s Finches” and are a common example of natural selection and adaptive radiation.
Which question would MOST help a scientist determine the level of biodiversity, that exists among the thirteen species of finch on the Galapagos Islands?
Question 6 options:
What is the most common beak color among the finches?
How many finches are more than five years old?
Which species of finch has the greatest average mass?
What variation exists between the species for traits like beak size and shape?
Answers
Answer:
What variation exists between the species for traits like beak size and shape?
Explanation:
If the question is looking for biodiversity, the answer would include variation.
Action Potential: Relative refractory period
In a neuron, there is a period of time called the absolute refractory period where it is impossible for an action potential to
begin. This corresponds to the change in membrane potential from +30 to -70 mV, or the repolarization phase. Towards the
end of the repolarizing phase, there is a relative refractory period where it is difficult, but not impossible, for another action
potential to begin. Using the time slider function, which of the following segments in the neuron would correspond to a
relative refractory period?
Answers
A second action potential can be triggered during the relative refractory phase, but it will need a stronger stimulus to do so than the first time. Refractory times are brought on by the inactivation gate of the Na+ channel.
What Action Potential related to Relative refractory period?The axon has a tougher time producing successive action potentials during this time period, which is referred to as the refractory period, as a result of these transient alterations.
As a result, the refractory period restricts the quantity of action potentials that a certain nerve cell can generate in a given amount of action potentials time.
If enough powerful stimuli are applied to the neuron after the absolute refractory time, Na+ channels start to recover from inactivation and the neuron may respond once again by generating action potentials.
Therefore, A stimulus that is stronger than usual is required to generate neuronal activation during the relative refractory period.
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Check all of the following statements that represent an example of predation. Check All That Apply A deer eats the leaves of a tree.A deer eats the leaves of a tree. Barnacles grow on various marine animals.Barnacles grow on various marine animals. A snail eats a clam.A snail eats a clam. A fungus decomposes dead organic matter.A fungus decomposes dead organic matter. A tree absorbs inorganic nutrients from the soil.A tree absorbs inorganic nutrients from the soil.
Answers
Answer:
- A deer eats the leaves of a tree.
- A snail eats a clam
Explanation:
Predation is one of the mode of feedings used by certain organisms. It is a relationship between two organisms in which one of the organisms called PREDATOR kills/harms and feed on the other organism called PREY.
According to this question, the two examples that represent predation are as follows:
- A deer eats the leaves of a tree; the deer, which is the PREDATOR feeds on a tree plant, which is the PREY.
- A snail eats a clam; the snail is the PREDATOR in this case and it harms the clam (PREY) by killing and feeding on it.
Answer:
A deer eats the leaves of a tree.
A snail eats a clam
Explanation:
E2023
Which of the following is defined as the assurance of nutritional quality to ensure productie oliopinda
fetal programming
prenatal growth process
differentiation
genetic reassortment
Answers
Answer:
prenatal growth process