Answer:
Part A: Primary producer - plants (ex: sunflowers), Primary consumers- herbivores(ex: rabbits), Secondary consumers - omnivores and carnivores (ex: snake), tertiary consumers - omnivores and carnivores (ex: foxes), A-p-e-x predators - can be omnivores or carnivores (ex: coyote)
Energy decreases as it travels from the bottom of an energy pyramid, every time energy passes from one tropic to another, the predator only gets 10% of the total energy, or the stored energy, the rest of the energy has already been used up.
Part B: Humans cannot ever occupy the lowest or first tropic level, because the first tropic level is for producers like plants, humans are not producers and therefore cannot be at the first tropic level.
1. Why do trees that grow alone in a field often have a large spread out canopy of leaves as well as being as wide as it is tall, whereas trees that grow in a
rainforest are extremely tall and have concentrated canopies at the very top of the tree?
Answer: C
Explanation:
¿Qué habría ocurrido con la mariposa del abedul durante la revolución industrial si no hubieran existido mariposas oscuras?
what happens to the light coming out of a convex lens
Which section of the article BEST explains why the development of CRISPR-Cas9 is significant for the scientific community?
Answer:
It allows the scientists to activate gene expression instead of cutting the DNA.
Explanation:
The development of CRISPR-Cas9 is significant for the scientific community because this development allows the scientists to activate gene expression instead of cutting the DNA. This technique allows the scientists and researchers to study the function of the gene. Before development, Cas9 enzymes produced by the CRISPR system binds to the DNA and cuts it by shutting the targeted gene off so this development of CRISPR-Cas9 enables the scientists to activate gene expression instead of cutting the DNA.
All compounds that have been found to be mutagenic in the Ames test are also carcinogenic. View Available Hint(s) All compounds that have been found to be mutagenic in the Ames test are also carcinogenic. True False Submit Part B Why are liver extracts used in the Ames test? View Available Hint(s) Why are liver extracts used in the Ames test? A liver extract is necessary for the bacteria to produce histidine revertants. Liver enzymes activate the bacterial enzymes. Liver enzymes may activate some innocuous compounds, making them mutagenic. The bacteria require the nutrients present in the liver extract for growth.
Answer:
Part A: False
Part B: Liver enzymes may activate some innocuous compounds, making them mutagenic
Explanation:
The Ames test, also known as Salmonella typhimurium reverse mutation assay, is a bacterial short-term technique used to identify if a particular chemical compound may cause mutations in target cells. It has been shown that there exists a positive correlation between carcinogenicity and mutagenicity in the Ames test, but this correlation is not absolute. In the Ames test, a rat liver homogenate (containing liver enzymes) can be added in order to identify substances that are not mutagenic themselves but are metabolized in order to form a mutagen (e.g., benzopyrene).
In the presence of oxygen, _____ molecules of ATP can be formed during cellular respiration.
A. 36 to 38
B. 19 to 24
C. 2 to 4
D. 63 to 68
E. 38 to 42
Would poor nutrition affect the traits or the genes of an organism?
Answer:
yes
Explanation:
Place the rock layers in order from oldest to youngest in the blanks below. Type the letters as they
are shown.
Answer:
C
Explanation:
The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A. So the full sequence of events is as follows: Layer C formed.
Which of the following contain stem cells that produce most types of blood cells?
Bone Marrow
O Muscle cells
O Bile
O Plasma
State one way by which Carbon Dioxide increases in the atmosphere
Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.
Answer:
pollution is the way by which carbon dioxide increases
1. The passage above describes the interactions of several ecosystems, what is the overall theme of the
entire article? "UNDERLINE the sentence that serves as the topic sentence or thesis for the article.
a) to compare the food chains of each ecosystem
b) to convince the reader to protect the environment
c) to explain what keystone species are important in each ecosystem
Answer: to explain what keystone species are important in each ecosystem
Explanation:
The overall theme of the article is to explain what keystone species are important in each ecosystem.
Keystone species is referred to as an organism that defines the ecosystem as a whole. They help define the habitat's biodiversity.
It should be noted that despite the fact that every living organisms depends on each other, some species are more vital than others and when they're removed, there will be a drastic change in the habitat.
3
1 The table gives the content of glucose, urea and
calcium ions in the blood entering the kidney, in
the glomerular filtrate and in the urine of a person.
Values are given in mg per 100 cm'.
Component/mg per 100 cm
Blood Glomerular filtrate
Urine
Component
glucose
100
100
urea
26
26
1820
S
calcium ions
4
4
5
C
a):) Which of the components provides energy for
the body?
ii) Which of the components is a metabolic
waste product?
[1]
b) Explain why the figures for each component are the
same for the blood concentration and
glomerular filtrale.
[3]
c) i) If the
person
drank a large volume of water,
far more than was needed by the body,
predict what would happen to the figures
in the urine column.
[2]
ii) Describe the processes taking place in the
body to support your answer to (c)(i). [3]
3
Answer:
c
Explanation:
dmvs.dfm
Which process of genetic recombination involves genes from both parents?
crossing over
independent assortment
fertilization
tetrad formation
Answer:fertilization
Explanation:
The process of genetic recombination which involves genes from both parents is crossing over. This process occurs during prophase I of meiosis, when homologous chromosomes pair up and exchange genetic material.
Explain the process?A portion of each parent's chromosome is swapped during this process, resulting in two new chromosomal combinations that are distinct from those of either parent. Genetic variety among the progeny is produced as a result of this process, which is advantageous for evolution.
The process of crossing over is random, therefore it is unpredictable which chromosomal segments will be exchanged. This is crucial for fostering genetic diversity because it allows for a wider variety of genetic combinations to be produced when genetic material is exchanged.
As portions of each chromosome will be exchanged during crossing over, this procedure also aids in ensuring that the offspring obtain a combination of genetic material from both parents.
Learn more about genetic recombination at:
https://brainly.com/question/12685192
#SPJ5
Wheat, barely ,oats and rice are examples of what type of crop ?
Answer:
Cereal crops
Explanation:
Answer:
Cereal crops
Explanation:
hope it helps :)
Please hELP I will mark Brainliest for correct answer and first answer
Answer:
to control which substances enter and leave the cell
Explanation:
the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
how do fossils validate the existence of a global flood
Answer:
This concept is called the theory of plate tectonics.
Explanation:
What type of boundary does the San Andreas Fault mark?
Answer:
transform
The San Andreas Fault is the transform plate boundary where a thin sliver of western California, as part of the Pacific Plate, slides north-northwestward past the rest of North America.
If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O except If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O except ribulose bisphosphate (RuBP). O2. 3-phosphoglycerate. glucose. glyceraldehyde 3-phosphate (G3P).
Answer:
Option B, O2
Explanation:
It is because the oxygen released during the process of photosynthesis comes from the water absorbed by the roots and not by the CO2containing heavy oxygen (18O). In fact oxygen from CO2 containing heavy oxygen (18O) is used in making sugar which is then stored for energy.
Hence, option B is correct
There are three types of diabetes. Type 1 diabetes occurs when a. the pancreas does not produce insulin b. the body makes some insulin, but not enough c. hormone levels interrupt insulin production d. women are pregnant e. the body cannot accept the insulin produced
Answer:
a when the pancreas doesn't produce insulin
Explanation:
type one diabetes occurs when there is no insulin being produced by your body
please give me brainliest
All of the animal and plant populations living in a particular area make up a ____.
A. population
B. community
C. habitat
Answer:
A) population
Explanation:
Answer:
A. population
Explanation:
for example, you may see the population of a town, right? different segments of nature make up what i like to call "wild life towns"
for example, on a map, you may see population of a certain species for square mile.
The salamander is an amphibian, so it has a as it grows and develops. The adult form is different from the larva because the adult .
Answer: The options are not given, here are the options from another website.
A. metamorphis
B. pupae stage
C)simple life cycle
Question 2
A)breathes through lungs
B. forms a pupa
C. lives completely underwater
The correct answers are A A.
Explanation:
Salamander go through process of metamorphosis that reproductive changes. They have a larvae stage that breathe through gills because the larvae are inform of a fish and gave gills for respiration while the adults breaths through lungs. The larvae stage develops 30 days after hatching and can possibly change into an adult like 60 after hatching.
Answer:
metamorphosis
Breathes through its lungs
I hope this helps
what are cotyledons? & what is its use
Answer:
Cotyledon, seed leaf within the embryo of a seed. Cotyledons help supply the nutrition a plant embryo needs to germinate and become established as a photosynthetic organism and may themselves be a source of nutritional reserves or may aid the embryo in metabolizing nutrition stored elsewhere in the seed.
*You Can put this in your own words
Write the CODON that corresponds with each amino acid. There may be more than one. The full names are written, but the codon chart only shows the first three letters. proline ______________________ glycine ______________________ valine ______________________ phenylalanine ______________________ histidine ______________________ arginine _________________
Answer:
In protein synthesis, different mRNA codons produce different amino acids by the translation process with the help of ribosomes and tRNA. These mRNA sequences are read in sets of three which are termed as triplet codons. Specific amino acids are produced by different codons, however, more than one codons code for one amino acid. The given amino acids correspond with the following codons:
Proline: it corresponds with four codons
1. CCT
2. CCC
3. CCA
4. CCG
Glycine: it corresponds with four codons
GGT
GGC
GGA
GGG
Valine: it corresponds with four codons
GTT
GTC
GTA
GTG
Phenylalanine: it corresponds with two codons
TTT
TTC
Histidine: it corresponds with two codons
CAT
CAC
Arginine: it corresponds with six codons
CGT
CGC
CGA
CGG
AGA
AGG
Please Help I will mark bRAINLIEST
Answer:
d
Explanation:
In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
explain how at least three pieces of evidence support the theory of evolution.
Dont put any link or else I won’t give brainlist, just answer.
Answer:
1. Fossil evidence
2. Homologous similarities.
3. Molecular evidence
Dr. Mrs. Brown has type O blood, according to the model what surface antigens does she have on her red blood cells?
Answer:
Explanation:
Dr Mrs Brown has now antigen on her red blood cells because Blood type Of are often refer to null because it has neither antigen A or B. Therefore it is null.
But blood type Of normally have both A and B antibodies in the blood cells.
Two insect groups vary genetically by two genes. When put together, they were able to reproduce and produce offspring that could also breed. Which best describes this insect population?
The insects experienced geographic isolation.
The insects experienced reproductive isolation.
The insects are different species.
The insects are the same species.
Answer:
The insects are the same species.
Explanation:
The insects are the same species because they interbreed with each other successfully. If the organisms belongs to the same species, they have the ability to interbreed with each other and produce fertile offspring while on the other hand, different species can't interbreed with one another. These two organisms have some genetic variations among each other due to environmental factors that leads to the differences between these two organisms.
The insects are the same species because they were able to reproduce and produce offspring that could also breed.
What are species?Species are a group of related organisms which are able to interbreed and produce reproductively viable offspring.
The species level of taxonomy is the closest relationship and has the fewest number of organisms.
Since, the two insect groups were able to reproduce and produce offspring that could also breed, they are of the same species.
Learn more about species at: https://brainly.com/question/26125007
_______ Which vitamins and minerals must be listed on food labels?
a. vitamin D, vitamin C, iron and magnesium
b. vitamin C, calcium, iron and potassium
c. vitamin C, vitamin A, calcium and iron
In humans, the allele for brown eyes, B, is dominant over the allele for blue eyes, b. Which combination of alleles shown below could result in a person with blue eyes?a.BBb.bbc.bBd.Bb
Answer:
bb
Explanation:
the only way the recessive trait shows is if the dominant allele isn't present at all otherwise the dominant allele will show
need help! The horizontal and vertical lines on a graph. The x is horizontal and the y is vertical.
Answer:
X is horizantal and Y is vertical
Explanation:
Answer:
la respuesta es axis creo
