The waxy coat on plant's leaves serves to retain water. It is composed of cutin, a wax-like material produced by the plant which is chemically a hydroxy fatty acid.
C.
If flying squirrels were brought to Australia, what do you predict would happen
Mutations can affect genes that control how a cell divides. This can result in cancerous tumors. A mutation that is not detected and repaired by the cell would produce which of these results? A. an interruption in the process of mitosis B. an interruption in the process of mitosis C. undifferentiated cell division D. uncontrolled cell division
All cancers begin with a gene mutation giving rise to a faulty protein participating in cell reproduction, even if it is a minor change that occured in this protein. The major problem is that the cell will divide itself nonstop, forming a mass of mutated cells (a tumor). If they start to divide in an undifferentiated way, it can even access other tissues and becom a more serious problem. But, in order to define what causes a tumor at first, the uncontrolled cell division is the beginning of it all.
Therefore, the correct answer is D. uncontrolled cell division
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The complete chart indicating the number of chromosomes after meiosis, in body cells, in gametes and after mitosis are indicated in the given image.
Meiosis is the process of cell division in which the number of chromosomes are reduced to half. This is the reason why it is also called the reductional division. The process occurs in two phases: Meiosis I and Meiosis II. Meiosis I is the phase where actual reduction takes place.
Mitosis is the process of cell division where the daughter cells are identical to the parent cell. Here, the number of chromosomes remain the same and hence is called equational division.
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identify the choices that best complete the statement or answer the question
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres."
1. Atmosphere
2. Biosphere
3. Hydrosphere
4. Geosphere
What would be the result on daughter cells if a cell did not complete S phase properly?
Answer:
The growth of all cells is governed by the cell cycle, including cell division. Before a cell can divide, many processes must occur, including the proper duplication of the chromosomes. The cell cycle ensures that all of these processes occur normally, otherwise the cell ceases to progress and could die
which form of water has the least energy, but is not the densest form of water?
1. Solid (ice)
2. Salt water
3. Gas (water vapor)
4. Liquid
3. How might the changes that you identified affect the protein’s structure?Example: The change would likely have no effect. Neither valine and isoleucine would promote hydrogen bonding with water, because their R groups are nonpolar and thus hydrophobic.Changes spotted in the previous question:1. Valine changed for Isoleucine: there was not a change in the chemical properties, because both amino acids have non-polar chains2. Valine changed for Alanine: there was not a change in the chemical properties, because both amino acids have non-polar chains3. Glutamate changed for Alanine: there was a change because the aminoacidic chain lost their electronegativity4. Glutamate changed for Aspartate: there was not a change because the aminoacidic chain kept it's electronegativity.1) _______________________________________________________________2) _______________________________________________________________3) _______________________________________________________________4) _______________________________________________________________
In the previous exercise we spotted that in the sequences there were at least four changes in the aminoacidic sequences:
1. Valine changed for Isoleucine: as indicated by the very exercise, there wouldn't be a negative effect, because both amino acids have hydrophobic radical groups.
2. Valine changed for Alanine: like in the previous case, there wouldn't be a negative effect, because both amino acids have hydrophobic radical groups.
3. Glutamate changed for Alanine: there would be a change in the protein structure because Glutamate can form hydrogen bonds, and Alanine doesn't.
4. Glutamate changed for Aspartate: there wouldn't be a change in the protein structure because both amino acids can form hydrogen bonds.
Wind flows from an area of high air
pressure (more air) to an area of low
air pressure (less air). Why does wind
do this? What process is this an
example of?
Answer:
a
Explanation:
In order to maintain a high concentration of
potassium inside a cell (with a low
concentration outside) which of the following
must occur?
O passive transport
O active transport
O diffusion
O osmosis
Answer:
Passive transport does not require the cell to expend energy and involves a substance diffusing its concentration gradient across a membrane.
Sorry for the bad English, love from Vanuatu!
Explanation:
What is theory in science means
Solution:
Scientists use conceptual processes to understand nature through questions or propositions.
The method on which scientific investigations are based is the scientific method and it is the hypothesis-prediction approach.
This approach allows scientists to modify their conclusions as new information becomes available.
The method consists of five steps:
1. Make observations
2. Ask questions
3. Form hypotheses, which are tentative answers to questions.
questions
4. Make predictions based on the hypotheses
5. Test the predictions by making additional observations or conducting experiments.
If the test results support the hypothesis, it is subjected to additional predictions and tests. If they continue to support it, confidence in its correctness increases and the hypothesis comes to be considered a theory.
Therefore, a theory is a demonstrable model supported by experimentation (empirical facts) and data that explains a phenomenon. In other words, a theory is a set of concepts, including abstractions of observable phenomena and quantifiable properties, along with rules that express the relationships between observations of those concepts.
If a corn plant had Yellow kernels and a smooth seed shape, what could it's possible genotype be? Choose all that apply
Corn kernels' color and shape are coded by diallelic genes expressing complete dominance. The genotype of individuals carrying Yellow kernels and a smooth shape phenotype can be either ppSS or ppSs.
What is complete dominance?
Complete dominance refers to the inheritance pattern in which the dominant allele of a gene completely masks the expression of the recessive allele.
The presence of at least one dominant allele is enough to express the dominant trait. This becomes evident in heterozygous individuals.
In the exposed example, two traits are involved. One of them is the kernel color and the other one is the kernel shape.
Genes coding for each of the traits express complete dominance,
P codes for purple and is dominant over p that codes for yellow.S codes for smooth and is dominant over s that codes for wrinkled.If a corn plant had Yellow kernels and a smooth seed shape, it is expressing the recessive phenotype for color (pp) and the dominant phenotype for shape (SS or Ss), so the possible genotypes are,
pp SSpp SsYou can learn more about complete dominance at
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Complete question
In corn, purple kernels are dominant to yellow kernels, and smooth kernels are dominant to wrinkled kernels.
The following letters were selected to represent each of the possible alleles:
Color
Purple kernels: P Yellow kernels: pKernel shape
Smooth kernels: S Wrinkled kernels: sIf a corn plant had Yellow kernels and a smooth seed shape, what could it's possible genotype be? Choose all that apply.
Group of answer choices
PPSSPPSsPPssPpSSPpSsPpssppSSppSsppsspls help i’m so confused
Punnent square for breeding of female chocolate lab (bbEE) with male black lab (BbEE) the cross as follows:
be bE bE bE
BE BbEe BbEE BbEE BbEE
BE BbEe BbEE BbEE BbEE
bE bbEe bbEE bbEE bbEE
bE bbEe bbEE bbEE bbEE
What is breeding?breeding is a genetic concepts are applied in animal husbandry, agriculture, and horticulture. By selectively cultivating different plants, early farmers enhanced many of them. Pollination is the key component of modern plant reproduction, only the chosen male parent's pollen can be transported to the selected female parent.
There are three different breeds
Cross-breeding: mating between individuals from various breeds or lines. Pure breeding is the mating of members of the same breed or line. Inbreeding: When two relatives get together.Breeding is essential for improving traits that can improve the quality of life for people all around the world, including resilience to diseases and pests, drought, and temperature extremes.
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How does active transport differ from all other forms of transportation?A. It shifts from high to lowB. It maintains homeostasisC. It creates an equilibrium shiftD. It requires energy
The correct answer is the letter D. It requires energy
*Active transport requires energy (ATP) in order to move molecules across the membrane. It needs energy since it moves molecules against a concentration gradient.
1. Why is the band in lane 2 not as bright as lane 3? They are both restriction digests on two different DNA plasmids.
2. Lanes 5-6 are PCR products. How do the inserts reflect on the restriction digest in lanes 8-9?
3. Are PCR products smaller or larger than corresponding restriction digest fragments?
Larger DNA molecules travel more slowly across the gel matrix during electrophoresis than smaller ones do. As a result, the DNA molecules divide into different bands according to their respective sizes. The quantity of DNA that builds up in a band determines how black the band is.
Which PCR products travel more quickly, big DNA fragments or little ones? Why?Because DNA is negatively charged, it gravitates toward the positive electrode. All DNA fragments flow through the gel at the same speed because they all have the same mass-to-charge ratio.
A PCR result must frequently be further altered by cleavage with restriction enzymes. Without any DNA purification, restriction enzyme digestion may be carried out quickly and easily right in the PCR mixture.
The PCR primers' structure determines the size of the PCR result. To amplify an area of interest from a double-stranded DNA template, the user designs PCR primers. Always two primers are present, and they are made to border the area.
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Lamin A is a signaling protein embedded in the cell membrane. The locus of the lamin A gene is 1q22. On which human chromosome, arm, and position can the recipe for this protein be found?
Generally , these proteins are located in the nuclear lamina.
What is Lamin A ?
Instructions for creating a number of slightly different proteins known as lamins are provided by the LMNA gene. Most of the cells in the body make lamin A and lamin C, the two main proteins produced by this gene. These proteins are constructed from a pattern of virtually identical protein building units (amino acids). Lamin A is longer than lamin C due to the minute variation in the sequence.
These proteins are specifically found in the nuclear lamina, a layer of intermediate filaments and other proteins that is connected to the nuclear envelope's inner membrane. The nuclear envelope controls how molecules enter and exit the nucleus.
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Which is a three nucleotide sequence?
A. Gene
B. Codon ile A
C. Complement
D. Chromosome
What iS one condition that must be met for a population to be in genetic equilibrium?
A.
There iS a large amount of gene flow.
B.
There is a high mutation rate.
C.
There IS no genetic drift.
D.
There iS nonrandom mating.
Answer: The answer i think is right is c but i am not sure i am right:)!
Explanation:
Which of the following areas of study would be in the branch of earth science
• habitats or behaviors
• rocks or minerals
• heat or motion
• bacteria or cells
Answer: rocks or minerals
Rock or minerals are in the branch of earth science. It deals with natural chemicals and materials on the earth, and rocks and minerals fit into the category as geology is one of the main areas of earth science.
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Compare the size and depth of an acetabulum of a hip bone to the glenoid cavity of the scapula.How do these socket differences between the hip joint and the shoulder joint relate to strength and mobility?
Hip joint: It has the presence of ligaments that provides it strongness and musculature. because of these ligaments, allows the 180° movements of the legs. As the leg is used for running or much more physically intense activities the joint between the pelvis and femur that is the ball and socket joint gets so much pressure and stress, but due to its strong reinforcement by the ligaments, it becomes more flexible and strong.
Shoulder joint: As it is located in the scapula and also has the ball and socket joint it provides mobility as we can stretch our arm, and use it for throwing many things so this shows that it has mobility, but this reduces the stability by causing the rotatory injuries. Always remember that shoulder is in the shoulder blade which is mobile and this makes it risky and susceptible to injuries.
Conclusion: The scapula has mobility and we can see the upward and downward movement in it so this makes the shoulder joint more mobile but less stable as compared to the hip joint which has more stability.
What type of organism could have an exoskeleton?A. WormB. InvertebrateC. HumanD. Vertebrate
As we know exoskeleton is a characteristic of arthropods and other invertebrates, all vertebrates like us humans have an endoskeleton so they could not present such characteristics, finally, worms do not possess an exoskeleton, true that they are invertebrates however their phylum implies a soft body. Therefore the correct answer is option B.
In fish, these turn gills. Evolutionists claim that in mammals these turn into the ears and throats. Evolutionists claim this points to a common ancestor.TailGill slistsEmbryo Yolk sac
Fish's gills and mammal's ears and throats originate from similar structures found in the embryonic stage, which are known as gill slists or pharyngeal slits, and are found in all vertebrates during embryonic development.
This means gill slists is the right answer.
Which of the following characteristics correspond to homologous chromosomes?
Select all that apply.
-Separated during mitosis
-Replica of a single chromosome
-Maternal and paternal pairs
-Attached to one another by cohesin
-In humans, there are 23 pairs of these
-Formed during interphase
-Numbered in a karyotype
According to the research, the correct option is Maternal and paternal pairs. It is a characteristic that corresponds to homologous chromosomes.
What are homologous chromosomes?They are the carriers of the genetic material, that is, of the information encoded by deoxyribonucleic acid.
In this sense, these chromosomes form a pair and recombine during meiosis, they have the same structure and the same loci but different alleles, since each one comes from a parent.
Therefore, we can conclude that homologous chromosomes are the same in their morphology, formed by a paternal and a maternal chromosome.
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1. In animals, fertilization is to zygote as meiosis is to which of the following?
In animals, fertilization is to zygote, as meiosis is to (5) gamete.
Fertilization is the process of fusion of the male and the female gamete in order to form new organism which is diploid in nature. This process occurs only in the sexual mode of reproduction and unlike asexual reproduction, presence of two parents is essential in this.
Gamete is the germ cell that is involved in the process of sexual reproduction, in order to give rise to a new organism. Gamete is haploid in nature because it fuses with another gamete of the opposite sex in order to establish the diploid nature.
The question is incomplete, the complete question is:
In animals, fertilization is to zygote as meiosis is to which of the following?
mitosisdiploidchromosomereplicationgameteTo know more about gamete, here
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9. During which phase does the DNA make
a copy of itself?
a. prophase
b. metaphase
c. interphase
d. anaphase
Answer: A
Explanation:
!!!!
The function of most proteins depends primarily on the?
The function of most proteins depends primarily on the Tertiary structure which formed by peptide bond, hydrogen bond, covalent bond, and disulphide bond.
Protein Structure- The three-dimensional configuration of an amino acid-chain molecule's atoms is known as protein structure. Segments of amino acids, the polymer's monomers, are used to create proteins, specifically polypeptides. A single amino monomer can also be referred to as a residue, which denotes a polymer's repeating unit.
Peptide Bond- Whenever the carboxyl group with one molecule combines with amino amino group of another molecule, the outcome is the production of an amide group and a water molecule, which is known as a peptide bond.
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You are trying to determine the cause of Albinism in Gorillas. You begin by isolating the gene for skin pigment in a normal gorilla (sample 1) and in an albino gorilla (sample 2). You compare them to see what is different. Sample 1: ATTACAGTACTGGCA Sample 2: ATTACAATACTGGGCALooking at the sequences carefully you determine it is a __________ mutation.A. SubstitutionB. InversionC. InsertionD. Deletion
Here we are comparing the DNA sequence of the gene for skin pigment in a normal gorilla (sample 1) and an albino gorilla (sample 2).
The sequences are the following:
Sample 1
ATT ACA GTA CTG GCA
Sample 2
ATT ACA ATA CTG GGC A
We can see that the sequences have different lengths, sample 1 has a length of 15 base pairs (bp), while sample 2 has 16 bp. This means there is an extra nucleotide, so this is an insertion mutation.
This means the correct answer is C. Insertion
How does the cerebral spinal fluid (CSF) protect the spinal cord?
The cerebrospinal fluid provides hydromechanical protection, acts as a mechanical shock absorber, makes the spinal cord and brain become buoyant (reduce the effective weight), as well as provide nutrients to the central nevous system. Being an important form of protection to the central nervous system.
Base your answers to questions 1 and 2 on the diagram below, which represente a metabolic process and on your knowlege of biology. the letter x in the process represents
x
□+□+□+□-> starch
1. an antibody
2. a receptor
3. a hormone
4 a enzyme
(1) An antibody is a representation of one of the following metabolic processes.
What is the metabolic process?Metabolism is the collective name for the set of chemical reactions that sustain life in organisms.
Converting the energy in meals into energy that may be used to power cellular processes is one of metabolism's three main tasks.
Metabolic reactions occur in particular regions of the cell.
The cytoplasm is also the site of glycolysis, fatty acid synthesis, and glycogen synthesis in addition to several stages of amino acid breakdown.
Different metabolic pathways have specific locations within the mitochondria.
Chemical reactions within the cell transform food into energy.
Our bodies need this energy in order to move, think, and develop.
Specific proteins in the body control the chemical reactions involved in metabolism.
Therefore, (1) an antibody is a representation of one of the following metabolic processes.
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Which of the following is located inside the brainstem in between your ears
A. Hypothalamus
B. Hippocampus
C. Thalamus
D. Reticular formation
Answer:
The answer is d, Reticular formation
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PLEASE HELP!! WILL GIVE BRAINESTWhich of the following is the desired outcome of attaching streamers to the back of boats?Keeping birds from becoming tangled in fishing lineProviding habitat for lobstersReducing overall bycatch from drift nettingRemoving floating debris from the water
Answer:
Keeping birds from becoming tangled in fishing line.
