Answer:
The statement, that is, the fossil record does not contain any fossil remains of plants, only animals is false.
Explanation:
Any trace of past life is termed as the fossil. It can be an organism's remains like shells, plants, bones, or teeth. Any activity of an organism like burrows, footprints, and feces can be known as a fossil record. Five different ways by which the formation of a fossil takes place are natural casts, permineralization, trace fossils, amber preserved, and preserved remains.
The formation of a fossil distinctly takes place, however, the majority of them formed when an animal or plant dies in a watery environment and gets buried underneath the silt and mud. In the process, the soft tissues quickly get decompose and leave behind the shells or hard bones. With time accumulation of sediments takes place over the top and solidifies into a rock.
A new species of aquatic chordate is discovered that resembles an ancient form. It has the following characteristics: external armor of bony plates, paired lateral fins, and a bony skeleton. In addition to these, it will probably have which of the following characteristics?
a) legs
b) metamorphosis
c) an amniotic egg
d) no jaws
Answer:
a) legs
Explanation:
Based on these characteristics it can also be said that this species would have legs. This is due to this new species having paired lateral fins. That is because paired lateral fins refer to the pectoral and ventral fins, which are corresponding to the fore and hind legs of the higher animals. Meaning that this new species would have had to have legs if they had paired lateral fins, and a bony skeleton would help corroborate this finding.
Answer:
no jaws
hope this helped :)
step-by-step plan for dealing with a chemical splashed in your eyes.
Explanation:
go to the nearest eye wash station open ur eyes and let the water wash out the chemicals.
Imagine that a newly discovered species of fish normally has three eyes (E), but the rare mutation (ee) causes "diopthalmic" fish with two eyes to be born. In addition, eye color in these fish is inherited similarly to humans, with black eyes (B) being dominant to blue (bb). Assuming these two genes are carried on separate chromosomes, what must the genotypes of two black-eyed, three-eyed parents be if they have a blue-eyed, diopthalmic son
Answer:
Heterozygous with BbEe and BbEe
Explanation:
The genotypes of the two parents must be heterozygous.
From the illustration, E codes for three eyes while ee causes diopthalmic. B causes black eye while bb codes for blue eye.
Black eye genotypes could be BB or Bb.
Three eye genotype could be EE or ee.
A black eyed, three-eyed couple produced blue-eyed (bb), diopthalmic son (ee). From the law of inheritance, the son inheritance the alleles for each trait from the two parents, one from each. Hence, it means that each of the parent posses recessive alleles in their genotypes, that is they are heterozygous for the two traits.
BbEe x BbEe
9 BBEE black-eyed, three-eyed
3 B_ee Black-eyed, diopthalmic
3 bbEe Blue-eyed, three-eyed
1 bbee blue-eyed, diopthalmic
The diversity of species in a community refers to the _____. interactions of different species ability to resist change number of individual organisms number of different species
Answer:
number of different species
Explanation:
The diversity of a species is the number of different species in a given community (dataset). Meanings of species diversity may include species richness, taxonomic or phylogenetic diversity, and/or species evenness.
A researcher interested in the disappearance of fallen leaves in a deciduous forest carried out a field experiment that lasted nearly a year. She collected all the leaves from 100 plots scattered throughout the forest. She measured the amount of leaves present in November, May and August. The percentages reflect the number of leaves found, using the November values as 100 percent.
Answer:
Elm: 50 %; 1 %
Hazel: 69 %; 4 %
Explanation:
Assume the table looked like this.
[tex]\begin{array}{crrr}\textbf{Month} & \textbf{Ash} & \textbf{Elm} &\textbf{Hazel}\\\text{Nov} &\text{4271 g}& \text{3481 g} & \text{1723 g}\\ & 100\, \% & 100\, \%&100\, \%\\\text{May} & \text{2431 g} & \text{1739 g} & \text{501 g}\\& 100\, \% & x \, \% &z \, \%\\ \text{Aug} & \text{1376 g} &\text{35 g} & \text{62 g}\\& 100\, \% & y \, \% & w \, \%\\\end{array}[/tex]
To get the percentages for each species for May and August, you divide that month's mass by the November mass and multiply by 100.
[tex]x = \dfrac{\text{1739 g}}{\text{3481 g}} \times 100 \, \% =50 \,\%\\\\y = \dfrac{\text{35 g}}{\text{3481 g}} \times 100 \, \% = 1 \,\%\\\\z = \dfrac{\text{501 g}}{\text{1723 g}} \times 100 \, \% = 69 \,\%\\\\w = \dfrac{\text{62 g}}{\text{1723 g}} \times 100 \, \% = 4 \,\%\\\\[/tex]
The figure below shows the graphs for ash and elm.
Which statement best describes a cause and its effect that occurs during the process of muscle contraction?
Answer:
Muscle contraction can be explained by sliding filament theory.
1. Activation of muscles: the motor nerve generates an impulse to transfer signals from neurons to neuromuscular junction. This stimulates sarcoplasmic reticulum to release calcium into the muscle cells.
2.Contraction of muscles: calcium in the muscle cells binds with troponin causes actin and myosin to bind. Actin and myosin in the muscle binds and contract by utilizing ATP as a source of energy.
In the study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion. What does this say about the conclusion? It is well supported. It is weakly supported. It is inconclusive. It is refuted.
Answer:
It is weakly supported.
Explanation:
All the factors in each experiment are different. There are not any controls to ensure the results are reliable. When all the factors vary, it cannot be determined whether the factor being tested was the cause of the result, or another factor was the cause. Although all the reasearchers reached the same conclusion, it cannot be proven whether it was caused by the specific factor being tested, or if it was merely a coincidence.
During multiple experiment, if the results are the same or indicate the same conclusion then the reliability of the conclusion increases. Thus option A is correct.
What is the conclusion?The conclusion is the sum of all the observations during our experiment that gives the outcome of our investigation.
During cancer research on the different types of cells, conditions, and different experimental designs end up with the same conclusion which makes it more reliable. So option A is correct.
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what are the advantages of modern cutting crops
Answer:
the advantages of using modern technology
more yield of cropseasy farmingmore varieties of cropsfruits and vegetables are available all year round
Resistance is a force that Resistance is a force that is always higher than blood pressure. never changes in a blood vessel. acts with pressure to move blood along a vessel. decreases blood flow. increases blood flow.
Answer:
decreases blood flow.
Explanation:
I'll assume the question is about one of the effect of blood flow resistance.
Resistance forces are those forces that opposes the flow of blood through the blood vessels. Resistance forces in the blood vessels changes with the diameter of the blood vessels, and always acts against pressure to move the blood against the blood vessels. If the resistance forces in the blood becomes equal or greater than the blood pressure, there will be no blood flow through the blood vessels. So generally, resistance forces in the blood vessels acts to decrease blood flow through the blood vessels.
If a scientist wanted to follow Mendel's experiment with a different kind of plant, which type of plant would she examine? A) A plant that cannot self-pollinate. B) A plant that has only recessive alleles. C) A plant that has three alleles for a trait. D) A plant that has only two alleles for a trait.
Answer:
D
Explanation:
The red pigment in erythrocytes is __,which transports oxygen.
Answer:
The answer is Haemoglobin.
Explanation:
Haemoglobin is a red pigment in red blood cell is used to transport oxygen.
Unequal reproductive success ______.Group of answer choicescan lead to a population being less well adapted to its environmentcan lead to natural selectionalways decreases the size of a populationdoes not affect the frequency of expression of traits in succeeding generations of a populationincreases variation
Answer:
can lead to natural selection
Explanation:
Unequal reproductive success _can lead to natural selection_____.This is because if there is unequal reproductive success then one of the organisms is better suited for reproducing, surviving, and passing down their genes to their offspring rather than the organism who is unfit. This is where natural selection comes into play because natural selection is process where individuals better suited for their environment produce more and have better survivality.
So overtime, the organism which is weaker (in sense of fitness) (here fitness relates to reproduction and survival), will not pass as many genes and won't survive, whereas, individual better suited will, hence in a way "Nature selected" the better fit organism.
Can somebody please help me on this please
Ouuuu I need help too
Answer
Met/start, Pro, Thr, Asp
Explanation:
AUG-->Met/Start
CCG-->Pro
ACU-->Thr
GAC-->Asp
What happens when T2 phages are grown with radioactive phosphorous? A: Their DNA becomes radioactive. B: Their proteins become radioactive. C: Their DNA is found to be of medium density in a centrifuge tube. D: They are no longer able to transform bacterial cells. E: They transfer their radioactivity to E. coli chromosomes during infection.
Answer: A: Their DNA becomes radioactive.
Explanation:
T2 phage is a virus, it infect and kill Escherichia Coli (E.Coli) which is a bacteria, t2 phage has a DNA that is double stranded while Radioactive phosphorus is an Isotope of phosphorus having same atomic number but different mass number.
Deoxyribonucliec acid(DNA) contains the genetic makeup of an organism.
it double stranded and it is made up of a nitrogenous base, phosphate group and a 5 carbon sugar. When t2 phage grows with radioactive phosphorus in, it becomes infused into the cell and replicated in the virus cell during DNA replication process making it have more copies in the cell this makes the DNA of the t2 phage radioactive in nature.
Dentre as alternativas a seguir,a única que é uma mistura é: ( )Um átomo de oxigenio ( )Àgua destilada ( )O ar atmosférico ( )O gás ozoio me ajudem por favor...
Answer:
Atmospheric air
Explanation:
Atmospheric air is a mixture of nitrogen, oxygen, argon, and small amounts of other gases.
A is wrong. A flask of oxygen atoms has nothing else in it. The O atoms are a pure substance.
B is wrong. A flask of distilled water contains only water. The water is a pure substance.
D is wrong. A flask of ozone contains only ozone. Ozone is a pure substance,
Given the following gene sequence, determine which of the choices would be a point mutation:
CATCGATGGATC
A. CATCGAGGATE
B. TACCGATGGATC
C. AATCGATGGATC
D. CATCGATTGGATC
The answer is C because cytosine is replaced with adenine
The point mutation in the sequence CATCGATGGATC can be AATCGATGGATC. The correct option is C.
What is point mutation?In a genome if only a single base pair is altered i.e., added, deleted or changed it will cause point mutation.
In the given sequence, CATCGATGGATC, First cytosine is replaced by adenine, AATCGATGGATC in which is representing point mutation.
Thus, the correct option is C.
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1. List any three reasons why you
would think that you are sick and
ought to see a doctor. If only one
of these symptoms were present,
Why or why not?
2. In which of the following case do
you think the long-term effects on
your health are likely to be most
unpleasant?
• if you get jaundice,
if you get lice,
. if you get acne.
Why?
would you still go to the doctor?
Hi guys I am begging now
Please answer
Answer:
1-if this symptom is persistent
if you start developing other symptoms
if OVC drugs do not work
iguess
2-if you get lice because these are not easily detectable except itchy scalp maybe so before you notice a lot of harm has been done
yes I would go to be checked how fad the damage is and if it can be treated
Individuals in the __________ adulthood stage tend to feel more responsible, more capable, and more financially independent than adolescents, yet they feel less capable than adults. A. Older B. Middle C. Young D. Emerging
Answer:
D.) Emerging
Explanation:
Answer:
D
Explanation:
Explain how the structure of Earth's interior affects seismic wave speed and direction?
In which process does water move from the land to the air?
A. Percolation
B. Precipitation
C. Evaporation
D. Runoff
Answer:
option C IS THE CORRECT Evaporation is the process in which water moves from the land to the air. Evaporation of water from the land happens directly from lakes, puddles, and other surface water.
Explanation:
i hope this will help you :)
Gene expression patterns can be used to test hypotheses based on morphology. For example, the regulatory gene Bapx1 is expressed in the hinge of the developing lower jaw in fishes and reptiles. Where would you predict Bapx1 expression to occur in mammals?
A. in the developing cheekbone
B. in the developing lower jaw
C. in the mature lower jaw
D. in the developing ear bones
Answer:
The correct answer is option D. "in the developing ear bones".
Explanation:
The developing lower jaw of fishes and reptiles has a variety of bones that are joined together, forming the mandible that they use to eat their preys. Some bones in the developing lower jaw of fishes and reptiles are equivalent to the developing ear bones of mammals. Therefore we can predict that the Bapx1 expression in mammals will occur in the developing ear bones. About this evolutionary relationship, scientist Zhe-Xi Luo of the Carnegie Museum of Natural History in Pittsburgh states "Reptiles have [a] jaw full of ear bones from mammals and mammals have an ear full of jawbones of reptiles".
Which sustainable practice is paired correctly with its impact on the environment? Using bamboo results in an increased use of forest trees. Practicing contour plowing results in a need for more land. Setting irrigation systems to run longer results in a reduction of water use. Building more wind farms results in a reduction of fossil fuel use.
Answer:
build more wind farms results in a reduction of fossil fuel use.
Explanation:
no comment
Name The carbon-containing compounds produced by an engine that burns hydrocarbon fuel
Answer:
Hydrocarbon combustion
Explanation:
Carbon monoxide(CO) Carbon dioxide(CO2), but mostly carbon dioxide
Consider this animal cell.
The organelles in an animal cell are labeled. Part F is a network of hollow tubes, flattened sheets, and round sacs.
What is the function of the organelles that are labeled F?
to temporarily store water, waste products, food, and other cellular material
to produce proteins for the cell
to move proteins and other substances through the cell
to contain digestive enzymes that break down waste material and debris in the cell
If im not wrong, its golgi body.
Golgy body giving enzyme to append protein to glycosaminoglycans,
it can store water,
produce protein and transport it or stored in the vesicles,
it also have haltened sacs.
Im sorry if im wrong
Answer: c, the rough and smooth ER
Explanation:
moves things through the cell
______ 3. Who is responsible for compiling a list of all endangered and threatened species in the U.S.? the U.S. Fish and Wildlife Service c. individual states the U.S. Congress d. forest rangers
Answer:
the U.S. Fish and Wildlife Service.
Explanation:
The rate of consumption of nonrenewable resources is more easily changed than the rate of replacement. Question 5 options: True False
Which of the following statements is most true regarding macromolecules and their functions?
Choose ONE answer:
A. Carbohydrates are structural molecules that give shape to cells in hair, nails, and skin.
B. Lipids give short term energy to cells.
C. Nucleic acids store genetic information that codes for traits.
D. Proteins are storage molecules that provide long term energy for cells.
Nucleic acids store genetic information that codes for traits is true about Macromolecules and their functions.
What are Macromolecules?Macromolecules are also called polymers. They are large molecules that formed by the combination of thousands of smaller molecules
which are covalently bonded together.The smaller molecules are also called monomers.
Examples of Macromolecules are carbohydrates, protein, lipids and nucleic acids.
Therefore, Nucleic acids store genetic information that codes for traits is true about Macromolecules and their functions.
Carbohydrates are storage molecules that provide energy to the cells.
Protein help to build the body.
Lipids supply energy to cells.
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A bird is flying over a field. What will most likely happen if a toxin causes the
hydrogen ion pump to stop moving H+ ions outside the mitochondrial
membranes of the bird's cells?
A. The bird will fly a long distance because it will rely on energy from
glycolysis.
B. The bird will stop flying because it will quickly use up its remaining
energy.
C. The bird will fly only short distances because it will need to rest.
D. The bird will eat more food to build up its energy reserves in the
Krebs cycle.
SUBMIT
Answer:
B. The bird will stop flying because it will quickly use up its remaining
energy.
Explanation:
This is because the mitochondria is known as the power house of cells. Oxidative phosphorylation takes place in this organelle and it involves the conversion of ADP to ATP through the hydrogen ions(protons).
When the hydrogen ion channel is blocked, energy production in cells stop.
This is why the bird will stop flying as it would have used up its remaining energy and won’t have a new one to use to continue flying.
Answer:
B
Explanation:
A p E x
Which of these options represents the correct flow of events during meiosis II?
A.
Sister chromatids pulled to opposite poles, nucleoli form, cytokinesis
B.
Sister chromatids pulled to opposite poles, nuclear envelope disappears, cytokinesis
C.
Cytokinesis, sister chromatids pulled to opposite poles, nucleoli disappear
Answer:
B
Explanation:
that seems to be the best one
The law of what
states that trans are passed from parents to
offspring independently of one another.
Answer:
genetic inherent
Explanation:
I ahve no clue
law of independent segregation(Gregor Mendel) i think