Answer:
The elephants are the keystone species in this ecosystem.
Explanation:
The elephants' job is to knock down trees from time to time to get food from tall stock. This prevents the trees from overpopulating and allows shrub lands to stay in place. This is important as herbivores can continue to graze in large herds and carnivores can continue using the same hunting strategies with little to no push backs by trees.
This makes to elephants a keystone species as without them, the foundation species will decrease in population and create a whole different ecosystem with the trees as the new foundation species.
What type of mutation is caused when a codon that corresponds to one of the twenty
amino acids specified by the genetic code is changed to a chain-terminating codon?
A nonsense mutation
B silent mutation
C chromosomal mutation
D missense mutation
What is a hominid? A)a family of tree-swinging monkeys B)a family of baboons C) a family of primates that include humans D) a family of bipedal apes
Answer:
a family of primates that include humans
Explanation:
activity
piz help me lpiz
Answer:
biotic --> trees,plants,fish,humans,dog,cat,hen.....
abotic --> vehicles,stone,rock,wood, chappal,pen.........
Explanation:
biotic is living things....
abotic is non living things
The human heart weighs how many pounds
After careful consideration your answer is...
Just about 1 pound
*Hope I helped*
~Alanna~
1 lb (pound)
Explanation:
it is the answer.
A scientist wishes to create bacterial colonies on an agar plate for observation of growth. Unfortunately, directly adding bacteria from the original culture results in too many bacterial colonies to count. In order to create a solution of proper bacterial concentration for observation, the scientist performs a three-step 1:100 serial dilution of the original bacterial culture. What is the dilution factor of the final solution
Answer:
10⁶
Explanation:
A 1:100 serial dilution is a dilution in which the concentration decreases 100 fold (i.e., in each dilution the concentration of the culture must be multiplied by 10⁻²). The question above indicates that a three-step 1:100 dilution was applied, which means >> 10⁻² x 10⁻² x 10⁻² = 10⁻⁶. Moreover, the dilution factor can be calculated by dividing the volume of the diluted solution by the volume of the concentrated solution. The dilution factor is the inverse of dilution, thereby in this case this value is equal to 10⁶ (dilution = 10⁻⁶ >> dilution factor = 10⁶).
Is Brewer's yeast a type of bacteria
Explanation:
Brewer's yeast is an ingredient used in the production of beer and bread. It is made from Saccharomyces cerevisiae, a one-celled fungus. ... Brewer's yeast is considered a probiotic and is used to aid digestion.
Answer:
Well Brewers Yeast is actually a Probiotic, and well a bacteria as well,
but its a good bacteria.
Explanation:
name the importance of cohesive and adhesive forces in transpiration
Answer:
Cohesion and adhesion draw water up the xylem. Transpiration draws water from the leaf. Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the phloem.
What is the term for a female reproductive cell?
sperm
egg
tetrad
embryo
Answer:
Second choice; egg
Explanation:
Gametes are an organism's reproductive cells.
- Female gametes are called ova or egg cells
- Male gametes are called sperm
A tetrad consists of four chromatids, and a chromatid is one half of a duplicated chromosome.
An embryo is an unborn offspring (child) developing.
Answer:
Egg
Explanation:
The egg also known as ovum is the female reproductive cell.
Identify the correct bonding between nitrogen bases in DNA molecule from given pair.
a. A=C
b. A=G
c. A=U
d. A=T
Answer:
It's not A or B. I hope that helps you a bit.
Explanation:
Answer:
A=T is the correct bonding between nitrogen bases in DNA molecule
when making a circle graph what angle represents 20%
Answer:
The central angle is 20% of 360°, that is
central angle = \frac{20}{100}
100
20
× 360° = 0.2 × 360° = 72° → C
Which prediction is true based on this population pyramid?
The population is not growing.
The population is growing slowly.
The population is growing rapidly.
The population is declining.
A specimane collection helps a scientsist do research by:
A. Asembling a large number of sample comparisons
B.providing a way to afford even the most expensive equpment
C.creating a realistic depiction of an imaginary undersea world
D.summerizing the results of an other scientists investigations
Answer A:
Explanation:
Why do we shiver when it is cold?
A. It is the brain stimulating the person to move to a warmer location.
B. It is an involuntary reaction that does not actually help our body.
C. The rapid twitching of the muscles generates heat.
D. It is a side-effect of the pancreas signaling to the brain that it is losing heat.
Answer:
C. The rapid twitching of the muscles generates heat.
Explanation:
When the body detects that it is cold, it will shiver in an attempt to create heat.
The rapid loosening and tightening of the muscles in this process creates heat.
This is a involuntary and natural response that helps return the body back to homeostasis and maintain a normal temperature.
So, the correct answer is C. The rapid twitching of the muscles generates heat.
Answer:
C. The rapid twitching of the muscles generates heat.
Explanation:
When someone feels cold, tiny sensors in your skin send messages to your brain telling you that you need to warm up.
In cell culture experiments, purified B cells expressing IgM can be induced to switch to producing IgE by stimulating them with an antibody to CD40 (a stimulatory antibody) plus the cytokine IL-4. In an individual undergoing an immune response, these signals would normally be provided by:
Answer:
TFH cells in the germinal center
Explanation:
The Tfh cells, present in the germinal center, are responsible for maturing and stimulating the class change of immunoglobulins (such as the change from IgM to IgE). This change could stimulate the new classes of immunoglobulins to act with stimulating antibodies to produce an immune response.
It is important to point out that the germinal center is the activated point of a lymphoid follicle that contains B and T lymphocytes, which act in the memory of the cells of the immune system.
Why there is a variation of weather in two different parts of India, though climate
was summer?
Answer:
Due to distance from the equator.
Explanation:
There is a variation of weather in two different parts of India, though climate was summer because both parts experience different amount of sunlight. There are some regions in India which is located on the equator so they experience very hot weather while on the other hand, some regions are present at a large distance from the equator so direct sunlight does not occur and the temperature is moderately warm.
Fur color is a trait controlled by a dominant over recessive gene. The fur color is either brown or black.
Two brown mice and produce 12 offspring. Three (25%) of the offspring produced are black fur and nine (75%) have brown fur.
Based on the above data, answer the follow questions.
State which fur color is dominant (1 pt each).
State which fur color is recessive (1 pt each).
What is the genotype for the black fur (1 pt )
What is the genotypes for the brown fur (2 pts )
Answer:
Dominant: Brown colored fur
Recessive: Black colored fur
Black Fur Genotype: bb
Brown Fur Genotype: BB, Bb, or bB
Explanation:
B = Brown
b = Black
Write the different function of different type of teeth.
Answer:
to help break down food.
help in digestion due to enzymes.
If a cell has 10 chromosomes when it begins mitosis, how many will it have immediately afterword?
Answer:
Explanation:
Therefore, there will be two daughter cells at the end of mitosis. Each will have 10 chromosomes, if the parent cell has 10. The chromsomes will not have sister chromatids because after mitosis, the duplicated pairs have separated into the two daughter cells. The cells will each be diploid, just as the parent cell was.
Explanation:
If a cell has 10 chromosomes when it begins mitosis, there are 15 will have immediately afterword.
what is the final product of tranlation
Answer:
polypeptide
Explanation:
The amino acid sequence is the final result of translation, and is known as a polypeptide. Polypeptides can then undergo folding to become functional proteins.
Which factors most influence whether a person will develop Alzheimer's disease?
Answer:
Hereditary transmission of the defected genes to the offspring.
Explanation:
Which of the following is not one of the steps of the water cycle?
A. Condensation of water vapor into clouds.
B. Throughflow of underground water back to the ocean.
C. Respiration of water into the atmosphere.
D. Transpiration of water into the atmosphere.
The option that is not one of the steps of the water cycle includes options C(Respiration of water into the atmosphere)
and D(Transpiration of water into the atmosphere).
Water cycle can be defined as the constant flow or movement of water through earth, atmosphere and the oceans either in liquid states or vapour.
The four main steps of water cycle includes:
EvaporationCondensationprecipitation and Collection (this leads to formation of underground water which gradually flows back into the oceans).In nature, water circulates mainly within the abiotic (non-living) environment; only a small proportion recycled through living organisms.
Therefore respiration and transpiration which occurs through living organisms doesn't form the major steps of water cycle, hence the correct option is C (Respiration of water into the atmosphere) and D (Transpiration of water into the atmosphere).
Learn more about water cycle here:
https://brainly.com/question/458815
Based on this map, which of the following countries do you think contributes most to global climate change?
Answer:
The answer is C.united states
Identify parts A and C.
Answer:
A. Liver B. Stomach
Explanation:
Liver detoxifies chemicals and metabolize drugs, stomach mixes the food and grind it
A: Liver
C: Stomach
hope it helps!!!!
What is a genotype???????
Answer: A genotype is an individual's collection of genes.
Explanation:
Explain how the changes in the villi of a person with coeliac disease may cause the person to lose weight and have low amounts of vitamins and minerals in their body
Answer:
The changes in the villi of a person with coeliac disease may cause the person to lose weight and have low amounts of vitamins and minerals in their body because Villi absorb vitamins, minerals and other nutrients from the food you eat.There are four different combinations of offspring genotypes in every Punnett square. Fill in the blanks below to complete the ratio for the Punnet square shown to the right.
Where's the Punnett square?
Các tuyến nào sau đây được gọi là các tuyến pha?
Answer:
tuyến tụy, tuyến sinh dục
Explanation:
B cells respond to the initial antigen challenge by ________. forming of a large number of B cells and T cells that display surface antibodies different from the original B cell producing progeny cells that include plasma cells and memory cells with surface antibodies different from the original B cell forming of a large number of B cells and T cells that display surface antibodies identical to the original B cell producing pyrogens to initiate fever producing progeny cells that include plasma cells and memory cells with surface antibodies identical to the original B cell
Answer:
Producing progeny cells that include plasma cells and memory cells
Explanation:
B cells are essential cells in the constitution of the body's immunity. These cells are responsible for developing the so-called humoral immunity that is capable of neutralizing and destroying foreign substances that do not belong to the organism, that is, the B cells are capable of destroying antigens. To destroy the antigens, B cells start a production of descendant cells that are made up of plasma cells and memory cells.
Each chromosome is like a package that contains numerous _____. Dna molecules. Traits. Genes. Cells. Help needed ASAP
Answer:
Each chromosome is like a package that contains numerous genes.
I hope this helps
What is one of the negative consequences of burning waste?
A. It reduces consumption
B. It pollutes the groundwater
C. It contributes to climate change
D. It creates runoff
Answer:
B. It pollutes the groundwater.
Answer:
B. It pollutes the groundwater.
