Answer:
b
Explanation:
Answer:
D
Explanation:
Because it doesn't always lead to new species, it can still lead to evolution, it isn't necessarily a mechanism for evolution though.
How do keystone species shape communities?
Explanation:
A keystone species is an organism that helps define an entire ecosystem. By keeping populations of mussels and barnacles in check, this sea star helps ensure healthy populations of seaweeds and the communities that feed on them—sea urchins, sea snails, limpets, and bivalves.
Answer:
By keeping populations of mussels and barnacles in check
i’ll mark brainliest
Answer:
1) Different
2) Different
3) The same
4) The same
Please don't forget to mark me brainliest!!!
What makes up muscle tissue?
o organisms
O organ systems
O organs
Ocells
Answer:
cells
Explanation:
musscle tissue is made up of muscle cells
cells make up organs organs make up organs systems and organ systems make up organisms
Please do let me know if the image is too blurry to be read. Do also double click on the image as this sometimes resolves the issue.
Answer:
its too blurry
Explanation:
What are similarities and differences between the structures of DNA and RNA?
Answer:
The similarities and differences between DNA and RNA are given as follows:
Explanation:
Similarities:
Both are made up of nucleotides
Nucleotides are made up of nitrogenous bases, a pentose sugar, and the phosphate backbone.
Both DNA and RNA have four nitrogenous bases each - two purines two pyrimidines
Purine binds with pyrimidines
Differences
DNA uses the nitrogenous bases adenine, cytosine, thymine, and guanine whereas RNA uses adenine, cytosine, uracil, and guanine. Uracil lacks a methyl group on its ring
RNA contains the sugar ribose that has an extra -OH while DNA contains the deoxyribose sugar that has H at the 2 carbon.
DNA is double-stranded while RNA is a single-stranded
Under alkaline conditions, DNA is stable while RNA is not stable.
What is the role of DNA in hereditary ?
Answer:
DNA is the genetic information used to make proteins, and it contains the hereditary traits of organisms. There are two types of DNA: mitochondrial DNA, which you can only get from your mother, and nuclear DNA, which is a combination of both your ancestors' DNA.
Which of the following is NOT a natural resource???
A. Clothing
B. Cotton
C. Water
D. Rocks
Answer:
A. Clothing
Explanation:
I hope it helps
which substances are found on cells surfaces and respond to nerve and hormone signals
Answer:
receptor molecules.
Explanation:
Receptor molecules are the glycoproteins that binds specifically to a hormone or nerve signal and bring change in the cell activity and function.
:)
A pathogenic RNA molecule is called a...
capsid
Virion
Virold
prion
Please hurry!!!!!!What 2 criteria determine passive transport?
Answer:
The rate of passive transport depends on the permeability of the cell membrane, which, in turn, depends on the organization and characteristics of the membrane lipids and proteins. The four main kinds of passive transport are simple diffusion, facilitated diffusion, filtration, and/or osmosis.
Explanation:
I'm sorry if it is wrong
Which statement best describes the way vegetation affects slope stability?
Answer: vegetation protects against erosion from raindrops and helps been together soil and regolith
Explanation:
Purines are made up of a ___ ring
Answer:
double rings(two)
Explanation:
The purines(adenine and guanine) have a two-ringed structure consisting of a nine-member molecule with four nitrogen atoms.
Define Habitat Isolation
Answer:
Habitat isolation occurs when habitat preferences lower the probability of mating between individuals associated with differing habitats. While a potential barrier to gene flow during ecological speciation, the effect of habitat isolation on reproductive isolation has rarely been directly tested.
Explanation:
Habitat isolation occurs when habitat preferences lower the probability of mating between individuals associated with differing habitats. While a potential barrier to gene flow during ecological speciation, the effect of habitat isolation on reproductive isolation has rarely been directly tested.
PLEASE HELP I'll love you forever
This is a picture of step 1 of protein synthesis. What happens in this step?
A. DNA is copied and then the new DNA strand leaves the nucleus and goes to the ribosome
B. DNA is copied to mRNA. The mRNA then leaves the nucleus and goes to the ribosome
C. RNA is copied and then goes to the nucleus tobring the code to the DNA
R. Scientific errors are factors that could have contributed to the uncertainty in the outcome of your experiment. Could measurements have been more accurate? Could you have performed more trials? Could environmental factors, such as the lab's lighting or temperature, have had an effect? State these possible sources of error and analyze or estimate how much they may have affected your results.
Answer:
Yes.
Explanation:
Yes, measurements should be more accurate if these scientific error are removed. Yes, we must perform more trials in order to verify the experiment. Environmental factors, such as the laboratory's lighting or temperature, has a great effect on the experiment and can cause error. In this experiment the errors occur such as instrumental, environmental, procedural, and human. All these error causes inaccurate readings of experiment so greatly affect the experiment.
Red blood cells carry oxygen to all cells and carbon dioxide away from all cells.
They travel through all the blood vessels of the circulatory system, including the
microscopic capillaries which connect arteries to veins. How does the design of a
human red blood cell fit its function?
The shape or design of a blood cell matches its function by...
Answer:
Biconcave shape
Explanation:
A red blood cell has what is known as a biconcave shape. Both sides of the cell's surface curve inward like the interior of a sphere. This shape aids in a red blood cell's ability to maneuver through tiny blood vessels to deliver oxygen to organs and tissues.
10. Deafness in cocker spaniels is inherited. The allele for deafness (d) is recessive to the allele for hearing (D). Two cocker spaniels that are heterozygous for hearing are mated together. What is the chance that a puppy will be deaf?
Question 10 options:
0%
25%
50%
100%
Answer:
25%
Explanation:
If they are both heterozygous, it means they both have a Dd genotype. If you draw out a punnet square Dd x Dd you end up with the following possible genotypes for the puppy:
DD, Dd, Dd, dd
In order for the puppy to be deaf, it must be dd since deafness is recessive, which is 1/4 (25%)
The chance that the puppy will be deaf is 25%. The correct option is B.
What is allele?The term "allele" refers to the alternative form or versions of a gene. People inherit one allele for each autosomal gene from each parent, and we tend to categorize the alleles.
We usually refer to them as normal or wild-type alleles, or abnormal or mutant alleles.
If they are both heterozygous, they have the Dd genotype. As per the Punnett square Dd x Dd, one can see the the following genotypes for the puppy:
DD, Dd, dD, dd
Because deafness is recessive, the puppy must be dd, which is 1/4 of the population.
Thus, the correct option is B.
For more details regarding alleles, visit:
https://brainly.com/question/14206531
#SPJ2
Which process do cells use to release energy without using oxygen?
•anaerobic respiration
•aerobic respiration
•mitosis
•photosynthesis
Answer:
The answer is anaerobic respiration
Explanation:
This process doesn't need any oxygen and produces 2 ATP.
Can you make this longer. The cause of the bee population to decline.
Answer:
Explanation of previously stated factors resulting in a declining bee population.
Explanation:
The user should submit further information on why the bee population is declining. My personal recommendation would be to introduce a reason and then explain it.
In response to your stated reasoning(s), assuming they are correct, this would be giving information such as: What can pesticides do to bees? What are some statistics showing habitat destruction. What do bees need to be nourished?
I would not recommend ending your answer with "and more".
By submitting this answer and referring to the work and resources given I trust you're in accordance with the Brainly Honor Code and I take no responsibility for any laws or rules broken with you using this platform.
Waste in water can be broken down but not recycled.
True or false ?
Answer:
true
Explanation:
What three things are needed for a plant to
carry out photosynthesis?
Glucose, Oxygen, Sunlight
CO2, Oxygen, Sunlight
CO2, Water, Sunlight
Oxygen, Water, Sunlight
What conclusion can you draw from the information in the chart?
O The gorilla and human are the most closely related organisms with the fewest differences in their amino acid sequences.
O The chimp and human are the most closely related organisms with the fewest differences in their amino acid sequences.
O The human and horse are the most closely related organisms with the fewest differences in their amino acid sequences.
O The monkey and gorilla are the most closely related organisms with the fewest differences in their amino acid sequences.
Answer:
d
Explanation:
d
The monkey and gorilla are the most closely related organisms with the fewest differences in their amino acid sequences. Hence option d is correct.
What are amino acid?Amino acid is defined as any of the elements present in both plants and animals that come together to produce a substance (protein), which is essential for a healthy body and for growth. The metabolism of amino acids plays a crucial role in many biological processes that take place inside the human body.
An examination of the first complete sequence of the gorilla genome suggests that humans and gorillas last coexisted 10 million years ago. The gorilla is the last of the surviving great apes, including humans, chimpanzees, orangutans, and gorillas, whose entire genetic sequence has been compiled.
Thus, the monkey and gorilla are the most closely related organisms with the fewest differences in their amino acid sequences. Hence option d is correct.
To learn more about amino acid, refer to the link below:
https://brainly.com/question/14583479
#SPJ2
Annie wants to have children, but she and her husband have been unsuccessful so far.
Do her cells in her ovaries need to go through mitosis or meiosis? Choose one, and
explain why.
Answer:
meiosis
Explanation:
The germ cells that enter meiosis become oocytes, the source of future eggs. Consequently, females are born with a finite number of oocytes arrested in the first meiotic prophase. Within the ovary, these oocytes grow within follicle structures containing large numbers of support cells. (i don't know if the explanation is correct but i know that it is meiosis)
What animals in the phylogenetic tree has a body cavity?
Answer:
Earth worms,Snails ,starfish I think
What would be the name for a disturbance that harms some organisms, but does not
hurt the ecosystem?
A. Primary disturbance
B. Small disturbance
C. Secondary disturbance
D. Cyclical disturbance
Answer:
B. small disturbance (a p e x)
Answer:
B. Small disturbance
Explanation:
I'm just trying to make this question easier to find than the other ones that have incorrect answers. Alright, hope this helps someone! Have a nice day :)
Is electricity a "green " energy resource ? Explain why or why not.
Answer:
The U.S. voluntary market defines green power as electricity produced from solar, wind, geothermal, biogas, eligible biomass, and low-impact small hydroelectric sources. ... Such fuel sources include the sun, wind, moving water, organic plant and waste material (eligible biomass), and the earth's heat (geothermal).
Explanation:
PLEASE MARK ME AS BRAINLIEST
what is the importance of the sense of smell when we are in the science loboratory
Answer:
because some chemical reactions release gases which may be odourless or may have smell, in order to identify it it is necessary to have a good sense of smell.
stars with greater overall mass are ___ and ___, and they consume their nuclear fuel
1. brighter/dimmer
2. cooler/hotter
3. faster/slower
Answer:
Stars with a greater overall mass are
1. (brighter)
and
2. (hotter)
, and they consume their nuclear fuel
3. (faster)
.
Explanation:
Answer:
Brighter, hotter, faster
Explanation:
Answer for edmentum test
(GIVING BRAINLIEST!!)
Which water reservoir contains frozen fresh water?
A) Rivers
B) Glaciers
C) Lakes
D) Oceans
Answer:
Glaciers
Explanation:
About three-quarters of Earth's freshwater is stored in glaciers. Therefore, glacier ice is the second largest reservoir of water on Earth and the largest reservoir of freshwater on Earth.
hope it helps!
What is the role of the nervous system in the body?
A. To gather and respond to information
B. To protect other organs and tissues
C. To send messages using blood cells
D. To transport oxygen and carbon dioxide
Answer:
A. To gather and respond to information
Explanation: