can you help me please?
what does DNA looks like? describe the structure of DNA?
Which group of organisms evolved first?
Select one:
a.
fish
b.
reptiles
c.
amphibians
d.
mammals
Answer: c or a because they are water animals
Explanation:
Answer:
A - Fish; (took the test)
Explanation:
Fish evolved in the world's oceans more than 100 million years before reptiles, amphibians, or mammals
:-) :-) :-) :-) :-) :-) :-) :-) :-)
Please help
Answer:
Explanation:
playing a game today just keeep it on gottttttttt
Which sequence represents matter from which heat is being removed?
Answer:
D
Explanation:
Trust me I did the test
Which of the following best distinguishes why farmers are looking for fertilizer alternatives?
Farmers are realizing that fertilizer is harmful to the environment.
Farmers are looking for cheaper ways to make their crops grow quickly.
Farmers are trying to comply with regulations that prohibit fertilizer use.
Farmers are beginning to understand that phosphorus resources are quickly being depleted.
Answer:
Hm, I think farmers are looking for cheaper ways to make their crops grow quickly.
Explanation:
Answer:
farmers are looking for cheaper ways to make their crops grow quickly.
Explanation:
Please help What type of cells have a nucleus?
a Prokaryotes
b Eukaryotes
C Bacteria
d Viruses
Answer:
Cells that have more than one nucleus are called eukaryotic cells.
The answer is B
Lelilani lives in Hawaii. Most of the rocks she collects for her science experiment are igneous. Why is this true?
Answer:
Igneous rocks form from the cooling and solidification of magma or lava. In Hawaii, there are volcanoes present, which produce magma and lava. Therefore, it makes sense as to why the rocks she collects are igneous.
Explanation:
A plant is observed to have deep roots and tendrils that wrap around objects. Which pair of tropisms correctly describe these responses?
1.geotropism and phototropism
2. phototropism and thigmotropism
3. hydrotropism and geotropism
4.hydrotropism and thigmotropism
Answer:
4
Explanation:
The correct answer would be hydrotropism and thigmotropism.
Hydrotropism is defined as the movement of a plant or its organs to or away from moisture. The deep root growth of plants is a way of seeking or growing towards moisture that is present deep in the soil. Hence, the root is said to exhibit positive hydrotropism.
Thigmotropism, on the other hand, is the growth or movement of plants or their organs to or away from touches. In this case, the tendrils of the plant that wraps around objects they come in contact with are showing positive thigmotropism.
The correct option is, therefore, option 4.
Answer:
4
Explanation:
Use the picture below to help you answer the question.
A car leaves Harrisburg, PA and travels West on the turnpike. How far has the car gone in 4 hours?
Question 21 options:
A.50 km
B.70 km
C.35 km
D.0 Km
Answer: B. 70 km
Explanation:
the answer is in the graph....
the line same point at 4hrs= 70km
-_-
do u go to k12?
Distance is a measure of how much ground has been covered by an object in motion. The object has been covered 70 km of distance in 4 hours. Option B is correct.
What is Distance?It is a measure of how much ground has been covered by an object in motion.Distance is directly proportional to the speed of the object.Displacement:It is a vector quantity that refers to the overall change in position of the object.It is defined as the straight line distance between the initial and final position of the object.Therefore, the object has been covered 70 km of distance in 4 hours.
Learn more about Displacement:
https://brainly.com/question/10919017
Name the process in plants that make glucose?
plants use sunlight, water, and the gases in the air to make glucose, which is a form of sugar that plants need to survive. This process is called photosynthesis
How would prescribing antibiotics affect someone with smallpox?
Answer:
Small Pox
Medical Condition
A deadly viral disease that has been completely eradicated.
How common is condition?
Extremely rare (Zero cases in US in 2015)
How is condition transmitted?
Transmitted through direct contact
Is condition preventable by vaccine?
Usually preventable by vaccine
Does diagnosis require lab test or imaging?
Requires lab test or imaging
Is condition treatable?
Treatments can help manage condition, no known cure
Time taken for recovery
Can last several days or weeks
Caused by infection with variola virus. Rashes on the face, hands and torso which form blisters and scabs which lead to formation of deep pitted scars. Smallpox has no cure; treatment involves managing symptoms.
Explanation:
Answer:
b
Explanation:
CELLS & CELL MEMBRANE
Which of the following is NOT a
eukaryotic organism?
A. A plant
B. An animal
C. A bacterium
D. A protist
Answer:
The answer is option C : a bacterium
Which characteristic listed below is most unique to plants?
Select one:
a.
Plants are heterotrophs.
b.
Plants undergo photosynthesis.
c.
Plants are multi-cellular.
d.
Plants are composed of eukaryotic cells.
Answer:
Plants are composed of eukaryotic cells.
Explanation:
Eukaryotic cells (as opposed to prokaryotic cells) have internal, membrane-bound organelles and a distinct nucleus that physically separates the genetic material of the cell from the all of the other parts of the cell. All protists, fungi, plants, and animals are composed of eukaryotic cells.
The characteristic that is most unique to plants is that they undergo the process of photosynthesis. Thus, the correct option for this question is B.
What is Photosynthesis?Photosynthesis may be defined as a type of process through which green plants and some photosynthetic algae synthesize their own food in the form of glucose with the help of carbon dioxide and water in the presence of sunlight.
The complete reaction of photosynthesis is as follows:
[tex]6CO_2+12H_2O[/tex] → [tex]C_6H_1_2O_6+6O_2+6H_2O.[/tex]Plants are eukaryotic in nature and have a double membrane cell organelle that is known as Chloroplast. These cell organelles have a green-colored pigment known as chlorophyll that captures the sunlight and converts it into chemical form and accomplishes the process of photosynthesis.
Therefore, the characteristic that is most unique to plants is that they undergo the process of photosynthesis. Thus, the correct option for this question is B.
To learn more about Photosynthesis, refer to the link:
https://brainly.com/question/26568636
#SPJ2
What is the locomotory structure of yeast
Answer:
Yeast cell structure
Each yeast cell has a distinct cell wall enclosing granular cytoplasm, within which can be seen a large vacoule and a nucleus (Fig. 214). The vacuole varies much in size according to the state of activity of the cell.
Yeast contains almost the same organelles of a mature eukaryotic cell. Nucleus, Golgi apparatus, mitochondria, endoplasmic reticulum, vacuole, and cytoskeleton are the most important one. Yeast cell particle size is typically of 5×10μm.
Explanation:
Yet, we don't always think of yeast as something remarkable. Instead, it's often perceived as plain or dull—a single-celled organism that, like a plant, lacks the ability to move on its own accord.
To summarize what you have learned about transcription, explain how a gene directs the synthesis of an mRNA molecule. Include in your explanation the words and phrases: base-pairing rules, complementary nucleotides, DNA, gene, mRNA, nucleotide, nucleus, and RNA polymerase
Answer:
Please find a detailed explanation of the process below
Explanation:
Transcription is the first stage of gene expression in living organisms in which a DNA sequence is used to synthesize a mRNA molecule. This process, which occurs in the NUCLEUS of eukaryotes and cytoplasm of prokaryotes, is catalyzed by an enzyme called RNA POLYMERASE.
- In the initial stage called INITIATION, RNA polymerase binds to the promoter of GENE and starts to unwind the double strand of the DNA sequence.
- The RNA polymerase, then, begins to add complementary NUCLEOTIDE bases following the COMPLEMENTARY BASE PAIRING RULE, which states that Adenine will pair with Thymine (Uracil in RNA) while Guanine will pair with Cytosine i.e. T-A, A-U, G-C etc. This stage is called ELONGATION.
- The last stage called TERMINATION involves the stopping of the process because the RNA polymerase has encountered a termination signal.
How do animals warn other animals that they are dangerous? HELP
Answer:
animals will use sound, colors, and stance. Another way would be by leaving their imprint or mark on their territory. For example a dog peeing on an area they used.
Explanation:
Hope this helps!! :)
Which of the following describes soil and temperature in an ecosystem? *
biotic factors
unnecessary factors
abiotic factors
selection factors
Answer:
abiotic factors.
Explanation:
they are not living things
which one helps inprove air quality
the second option since a carpool would decrease the number of cars, and the amount of pollutants produced by cars imagine if 5 people went in the same car compared to 5 people going in 5 different cars
Write a testable hypothesis related to sunblock
Only about 10 percent
of the energy from each
level of an energy
pyramid is available to
the trophic level above
it. (The rest is used to
power life processes or
is lost as heat.)
If the primary producers
have 10,000 units of
stored energy, how
much energy would you
expect to be transfered
to first-level, second-
level, and third-level
consumers?
Answer:
First leve consumer: 1,000 energy units
Second level consumer: 100 energy units
Third level consumer: 10 energy units
Explanation:
First level consumer: 1,000 energy units. Second level consumer: 100 energy units. Third level consumer: 10 energy units.
What is trophic level?The group of species in an ecosystem that are at the same level in the food chain is referred to as a trophic level. A food chain has five basic trophic levels, each of which has a different nutritional relationship to the main energy source.
The Sun is any ecosystem's main source of energy (although there are exceptions in deep sea ecosystems). Primary producers, sometimes referred to as autotrophs, receive their energy input from the Sun's solar radiation.
The first trophic level is made up of primary producers. Consumers, also known as heterotrophs, make up the remaining trophic levels; heterotrophs are unable to reproduce.
Therefore, First level consumer: 1,000 energy units. Second level consumer: 100 energy units. Third level consumer: 10 energy units.
To learn more about trophic level, refer to the link:
https://brainly.com/question/13267084
#SPJ2
What would happen if you killed off one of the secondary consumers in your food web?
Answer:
Shut it down lol
Explanation:
lol
Answer: The rest of the chain would die.
Explanation: the food chain all depend on each other so if one chain falls the rest fall like a domino effect.
Which organelle in plant cells creates pressure that maintains the shape of the cell
Answer:
Cell Wall is responsible to maintain the shape of the cell.
Explanation:
Which statement about identical twins and fraternal twins is correct in regards to DNA?
A. Identical twins have different DNA, and fraternal twins have different DNA.
B. Fraternal twins share the exact same DNA, but identical twins do not.
C. Identical twins and fraternal twins share the exact same DNA.
D. Identical twins share the exact same DNA, but fraternal twins do not.
Answer:
D. Identical twins share the exact same DNA, but fraternal twins do not.
Explanation:
Identical twins are the twins formed from one egg provided by their mother and one sperm provided by their father. In contrast, fraternal twins are formed from two different sperms and two different eggs from the same father and mother.
Due to the fact that identical twins are as a result of one fertilized egg dividing into two, they share the same exact DNA. On the other hand, fraternal twins do not share the same exact DNA because they are formed from separate eggs and separate sperms.
Answer:
d
Explanation:
just took test
if you had a cube that was 6 cm in length and height l, what would be the length and volume be?
A researcher hypothesizes that in mice, two autosomal dominant traits, trait Q and trait R, are determined by separate genes found on the same chromosome. The researcher crosses mice that are
heterozygous for both traits and counts the number of offspring with each combination of phenotypes. The total number of offspring produced was 64. The researcher plans to do a chi-square
analysis of the data and calculates the expected number of mice with each combination of phenotypes. Which of the following is the expected number of offspring that will display both trait Q and
trait R
Answer:
Explanation:
If we consider the traits Q and R individually, then
P(Q) = 75% (Q is dominant, from hetero-zygous parents)
similarly
P(R) = 75% (Q is dominant, from hetero-zygous parents)
Assuming the two alleles P & Q are indepedent, then
P(Q and R) = 75% * 75% = 56.25%
Out of 64 offsprings, we expect 75*56.25% = 9/16*64 = 36 express both Q and R traits, on the average.
For the given experiment 36 offspring out of 64 will produce both Q and R traits.
Di-hybrid Cross:
It is cross of organisms in which scientist perform the experiment keeping two traits in mind.
One parent is pure and dominant while another is Heterozygous for traits.
The parental genotypes will be,
RRQQ x RrQq
The gametes will be,
RQ, Rq, rQ, and rq
The cross,
RQ Rq rQ rq
RQ RQRQ RQRq RQrQ RQrq
Probability, If the traits Q and R expressed
P(Q) = 75% (Q is dominant, from heterozygous parents)
P(R) = 75% (Q is dominant, from heterozygous parents)
Probability, if two alleles P & Q are independent, then
P(Q & R) = 75% x 75% = 56.25%
The offspring that express both alleles, out of 64 offspring,
[tex]\bold {75 \times 56.25\% = \dfrac {9}{16\times 64} = 36 }[/tex]
Therefore, for the given experiment 36 offspring out of 64 will produce both Q and R traits.
To know more about di-hybid cross,
https://brainly.com/question/12289852
The protozoans are then grouped according to their means of...
a) obtaining energy
b) locomotion or movement
c) reproduction
d) none of the above
Which material maintains the digestive environment in the
stomach?
a strong bases
b weak bases
C strong acids
d weak acids
10 POINS Q: The following methods will melt an ice cube quickly, EXCEPT
A. put it in an insulating container
B. hold it in your hand and change hands when one hand gets cold
C. put it a glass of room temperature water
D. break it into pieces and warm up the pieces
Answer:i think it C srry if im wrong
Explanation:
Answer: It’s A
Explanation:
It you hold the cube in your hand it will melt because of the body heat. If you break the pieces and warm them up, it will melt. If you put it in a glass of room temperature water, the water would absorb the cold and it will melt. But if you put it in an insulated container, it will keep the cold in hence it will not melt the fast.
The most recent fossil discoveries have filled in many of the gaps in the evolution of birds from dinosaurs. Before the latest fossils were found, there were some scientists who questioned the idea that birds evolved from dinosaurs. In general, scientists constantly work to
Answer:
can you add a picture ?
what is one possible combination that can be found in the gamete formed by an individual with the genotype AaBB?
Answer:
(Ba) and (BA)
Explanation: those could be one of the combinations if u put them on a punnet square