What is true about ionic and covalent compounds?
Covalent compounds are formed from nonmetals while ionic compounds are formed from
nonmetals and metals
Covalent compounds contain oppositely charged atoms while ionic compounds contain
neutral atoms
Covalent compounds are very reactive with water while ionic compounds react very well
with oxygen gas
Covalent compounds are good conductors of heat and electricity while lonic compounds
are poor conductors
Covalent compounds are formed from nonmetals while ionic compounds are formed from nonmetals and metals (Specifically, a metal transfers electrons to a non-metal).
Which statement best contrasts polygenic inheritance with multiple allele inheritance?
Polygenic inheritance results in offspring with only recessive alleles, while multiple allele inheritance results in
offspring with both dominant and recessive alleles.
Multiple allele inheritance results in offspring with only recessive alleles, while polygenic inheritance results in
offspring with both dominant and recessive alleles.
Polygenic inheritance is controlled by many genes, while multiple allele inheritance is controlled by three or more
different forms of a single gene.
Multiple allele inheritance is controlled by many genes, while polygenic inheritance is controlled by three or more
different forms of a single gene.
Answer: for me it said C
Polygenic inheritance is controlled by many genes, while multiple allele inheritance is controlled by three or more different forms of a single gene.
I'm putting the whole answer so even if it a different option like B the sentence is still the same
Answer: C. Polygenic inheritance is controlled by many genes, while multiple allele inheritance is controlled by three or more different forms of a single gene.
Explanation:
J.S. Hart (Can. J. Zool. (1956) 34, 1, pp. 53-57) described seasonal changes in insulation of the fur of nine species of arctic and North temperate zone mammals. Relative seasonal changes ranged from 12 to 52% of the winter coat insulation value. Absolute changes were greatest in the largest mammals with thickest fur. Indicate if the following statements that are true or false.a. Increasing fur thickness would reduce conduction between the animal and the environment True or Falseb. Animals with thicker fur compared to those with thinner fur have different metabolic rates when measured at the same ambient temperature below the thermal neutral zone (TNZ). True or falsec. Endothermic mammals are most often classified as homeotherms. True or falsed. Fur does not affect the rate of convective and conductive heat loss in the cold. True or falsee. Changes in fur thickness is associated with an expression of a unique phenotype that optimizes fitness for a given environmental temperature.
True or false
Answer:
a. True
b. True
c. True
d. False
e. True
Explanation:
The fur plays a critical role as an insulator and it may be a greater thickness during the winter. The fur allows the animals to reduce their heat loss, thereby thicker fur may serve as an additional layer of insulation during the winter. Endothermic animals such as birds and mammals are capable of maintaining a constant body temperature independent of the environmental conditions. In a similar way, the homeothermic animals are able to maintain stable body temperature by regulating their metabolic processes (i.e., also mammals and birds can be classified as homeothermic animals). The study above cited (Hart, 1956) was aimed at collecting comparative information to support the role of fur as insulation in Canadian mammals and thus understand seasonal acclimatization in general. In this regard, Hart concluded that although seasonal differences could be observed in all species analyzed, the greatest absolute changes were observed in larger animals (that is, animals having the thickest fur).
Look at the word equation below.
glucose + fructose –>
sucrose + water
Which phrase describes the chemical reaction taking place?
Answer: Dehydration of simple sugars
Answer:
Dehydration of simple sugars
Explanation:
i did it and the first one and got it wrong
it gave me the right answer
All of the following are stages of mitosis except: O Metaphase OG1 O Anaphase O Telophase O Prophase
Answer:
G1 is not a stage of mitosis.
Explanation:
G1 is part of the actively dividing eukaryotic cells which pass through a series of stages G1 being one of them.
tp Which important step should you take before you design your experiment, to find out if someone else has asked the same question before, and to get more
information?
O A. Test
OB. Research
O C. Hypothesize
OD. Observe
What will happen when water is poured into a beaker of strong acid?
What is a possible reason that ecosystem 2 has fewer species than ecosystem
3) The oceans and the atmosphere work together through global currents that do what?
A. Cycle energy and matter to support the biosphere
B. Cycle energy and matter to support plate tectonics
C. Cycle energy and matter to provide nutrients to secondary consumers
D. Cycle energy and matter to support the biosphere as a closed energy system
Answer:
The correct answer is D)
Cycle energy and matter to support the biosphere as a closed energy system
Explanation:
The earth as we know it is a closed energy system that is, matter cannot be introduced or removed from it. Sometimes, rare meterites enter into the system with minimal or no disruption.
Also, energy can enter and leave. The energy mostly referenced here is the sun.
Within the earths system, the lithosphere, hydrosphere, and biosphere materials and energy go through a cycle which helps to support life.
For example, water when heated up by the sun rises as vapour from the earth and oceans into the atmosphere where it cools and condenses. When it cools and condenses, it , in the form of rain, comes down on the earth and oceans. As rain falls down to the earth and runs off the rocks, rocks are broken down into smaller fragments and soils. The hydrosphere comprises of all water bodies on earth. Besides the vapours which are evaporated from the same into the atmosphere, when volcanoes erupt they also send vapourised water into the atmosphere.
So because the earth is a closed system, a change in one sphere effects a change in others. An example is a change in the water cycle.
Cheers
Conjugation involves a transfer of genes
Answer:
Conjugation involves a transfer of genes
Explanation:
Conjugation is a transfer of DNA from a living donor bacterium to a living recipient bacterium by cell-to-cell contact. In Gram-negative bacteria it involves a conjugation pilus. ... Conjugative transposons carry the genes that enable mating pairs to form for conjugation.
A man and woman have a son who is color blind, a recessive sex-linked trait carried on the X chromosome, but neither parent is color blind. The woman is now pregnant with their second child. Which of the following statements is true about the second child? A daughter will be color blind because the father is a carrier of the recessive allele. A son will be color blind because the mother is a carrier of the recessive allele. A daughter will not be color blind because the father is not a carrier of the recessive allele. A son will be color blind because the father’s mother must have been a carrier for recessive allele.
Answer:
A daughter will not be color blind because the father is not a carrier of the recessive allele
A man and woman have a son who is color blind, a recessive sex-linked trait
carried on the X chromosome, but neither parent is color blind therefore the
daughter will not be color blind because the father is not a carrier of the
recessive allele
Color blindness trait is sex-linked because the trait is carried on the
chromosomes. The female have XX chromosomes while the male have XY
chromosomes. The color blind trait in the son(XY) is as a result of the
woman donating the X chromosomes which is defective and the Y
chromosome came from the man which has no issues.
in this scenario, half of their male children will have normal vision while the
other half will be color blind. The father's X chromosome is normal and all the
girls(XX) will have normal vision but will have the color blind trait in their
chromosomes because the XX chromosome are donated from both the man
and woman.
Read more on https://brainly.com/question/7998883
During photosynthesis, oxygen is converted to carbon dioxide. (2 points)
True
False
Answer:
false
Explanation:
Caves are formed from:
A. Freezing water
B. Sedimentation
C. Mechanical weathering
D. Chemical weathering
Answer:
d chemical weathering
Why is the process for developing a vaccine usually lengthy? A. Obtaining the necessary supplies for testing is complicated. B. Recruiting scientists to work on a vaccine project can be difficult. C. Ensuring that a vaccine is safe requires multiple rounds of human testing. D. all of the above
Answer:
C. Ensuring that a vaccine is safe requires multiple rounds of human testing
Explanation:
Vaccination is the process whereby a substance called a VACCINE is administered in order to prevent a particular disease. The vaccine is actually a substance given to help the body's defense system combat a particular infection or disease. A vaccine, which is usually a harmless strain of a pathogen, prepares the antibodies of an organism to fight against the actual pathogenic organism.
As rightly said in the question, developing a vaccine can be a very long process. This is because the vaccine has to go through series of testing on healthy humans before releasing to the public in order to ascertain that there are no risks or dangers attached to the usage. The process of ensuring that a vaccine is safe requires multiple rounds of human testing, which is time-consuming.
Mrs. Vega's science class incubated chicken eggs to see if any of the eggs would hatch. One of the eggs did hatch, and the class kept the chick. They measured the chick's weight each week using a spring scale. The measurements from the chick's weekly weigh-ins are shown in the table below. Which of the following graphs correctly shows the data from the table?
Answer:
the fourth chart/ whichever one has the first bar the lowest
Explanation:
matches da chart m8
Answer:
fourth chart
Explanation:
Both mitosis and meiosis begin with a diploid cell that contains replicated chromosomes. What are the main differences between these two processes, and what types of daughter cells produced by each?
Answer:
Hope this helps :)
Explanation:
Mitosis is the process by which cells duplicate.
Meiosis is a similar process which is just used to make reproductive cells such as eggs or sperm.
In mitosis, the cell DNA arranges into 46 chromosomes, duplicates, and then divides into two new cells.
In meiosis, the same duplication occurrs except four cells are created, each with only 23 chromosomes. (You know how you get half of them from each parent? This is so that the offspring have genetic variation.)
Another thing to notice about meiosis is that the cells are not identical like in mitosis, which simply duplicates them. Furthermore, in males all four sex cells are used as sperm but in females only one of these cells develops into an egg whereas the rest, called polar bodies, are reabsorbed into the body.
Answer:
Meiosis has two cell divisions and results in four haploid daughter cells with genetic variation, while mitosis has one cell division and results in two identical daughter cells.
Where do electrons get their energy in photosystem 1?
A. From energy in photons
B. From NAD and NADPH
C from glucose in the Calvin cycle
D. From ADP and ATP
Answer:
c
Explanation:
In which of the following tissues would one expect to see a lot of tight junctions?
Which part of the cardiovascular system does the term cardio refer to?
A- heart
B- blood cells
C- pumps
D- blood vessels
Answer:
cardio = heart, so A
Explanation:
What would happen to life on earth if all chloroplasts suddenly died?
The ability of trees to transport water hundreds of feet up from the roots is at least partially due to...
A. water’s high density.
B. cohesion of the water molecules to each other and the adhesion of the water molecules to the tree.
C. water’s high boiling point.
D. adhesion of tree molecules with the water molecules.
E. a neutral pH.
Answer:
option B. cohesion..........tree.
Name the enzymes responible for the digestion of fats and oil
Answer:
amylase and other carbohydrase enzymes
what are the factors affecting rate of photosynthesis?
Answer:
Several factors can affect the rate of photosynthesis: light intensity,carbon dioxide concentration and temperature
If you have anymore questions don't be afraid to ask and if this was the answer you were looking for i'm glad i could help! (´・ω・`)
pls help fast I will give BRAINLIST
The diagram below represents events associated with bio chemical process that occurs in some organisms. Which statement concerning this process is correct?
-This process uses solar energy to convert oxygen into carbon dioxide.
-This process converts energy in organic compounds into solar energy
which is released into the atmosphere.
-The process represented is respiration and the primary source of energy
for the process is the Sun.
-The process represented is photosynthesis and the primary source of
energy for the process is the Sun.
Answer:
The process represented is photosynthesis and the primary source of
energy for the process is the Sun.
Explanation:
The given diagram shows the process known as Photosynthesis and the primary source of energy for this process is the Sun. Thus, the correct option is D.
What is Photosynthesis?
Photosynthesis is a process by which plants make their food. Plants and other organisms convert light energy into chemical energy by this process that later can be used to fuel the organism's activities.
In this process, plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar. Plants transform carbon dioxide into oxygen with the help of sunlight and animals need oxygen to survive. Plants also fix carbon dioxide by checks the air quality.
In plants, photosynthesis takes place in chloroplasts, which contain a pigment called the chlorophyll. Chloroplasts are surrounded by double membrane and contain a third inner membrane, called the thylakoid, which forms long folds within the organelle.
Therefore, correct option is D.
Learn more about Photosynthesis here:
https://brainly.com/question/26494694
#SPJ2
Which statement best describes the relationship between photosynthesis and 
Answer:
Photosynthesis removes carbon into the atmosphere, and cellular respiration releases carbon back into the atmosphere
Explanation:
Which of the following is evidence for evolution in action?
Mosquitoes becoming resistant to pesticides
Bacteria becoming resistant to antibiotics over time
The different domesticated breeds of dogs customized for our needs
All are evidence for evolution
The evidence for evolution in action is considered to be All are evidence for evolution. Hence, the last option is correct.
What is evolution?It is the process that includes the modification with respect to the inherited trait of an organism for adapting the environmental conditions.
Like for antibiotic resistance, it represents the bacteria.
Mosquitoes should become resistant to pesticides.
And, if there are distinct domesticated breeds of dogs so the same should be customized.
Hence, the last option is correct.
Learn more about evolution here: https://brainly.com/question/25243570
Select all the correct answers.
Which of these is a primary producer in a food chain?
hawk
grass
deer
horsefly
Answer:
Grass is the answer.
Explanation:
It uses autotrophic nutrition as it produces its own food by photosynthesis
Viviana is ordering carpet
for 16 square rooms in a
hotel. Each room will need
100 square feet of
carpet. What is the
length of 1 room?
Answer:10 ft
Explanation:
define what factors allow a population of a species to grow to a certain size and how they relate to carrying capacity
When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-). In contrast, the atoms of covalently bonded molecules (e.g., glucose, sucrose, glycerol) do not generally dissociate when placed in aqueous solution. Which of the following solutions would be expected to contain the greatest number of solute particles (molecules or ions)?
A) 1 L of 0.5 M NaClB) 1 L of 0.5 M glucoseC) 1 L of 1.0 M NaClD) 1 L of 1.0 M glucoseE) C and D will contain equal numbers of particles.
Answer:
The correct answer is C) 1 L of 1.0 M NaCl
Explanation:
NaCl is a ionic compound so it dissociates in water into Na⁺ and Cl⁻ ions. Glucose is a covalent solute so it does not dissociates into ions. So, when we dissolve NaCl we have twice the amount of particles in solution in comparison with glucose. According to this:
A) and B) are solutions with the same concentration (0.5 M) but NaCl solution will have more solute particles than glucose.
C) and D) are solutions with more solute amount because they are more concentrated (1 M), but NaCl solution will have more solute particles than glucose solution ( 1 mol of Na⁺ ions + 1 mol of Cl⁻ ions).
The solution with the greatest solute particle number is C).
