Answer:
e
Explanation:
It worsens the quality of the soil
How can a mutation give adults the the ability to digest milk?
A single point mutation in the DNA near the lactase gene changes the cytosine (C) nucleotide to a thymine (T). Individuals with the thymine (T) nucleotide are lactose tolerant and can digest the milk products in adulthood.
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Leading and lagging DNA strands exist at a replication fork because ___________.A. the DNA polymerase can add new nucleotides onto either the 3' end or the 5' end B. the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5' end C. the two strands of DNA are parallel and DNA polymerase can only add new nucleotides onto a 3' D. end the two strands of DNA can be either parallel or antiparallel the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 3' end
Answer:
B. the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5' end
Explanation:
Deoxyribonucleic acid, known as DNA, is the genetic material of a cell, which must first undergo replication i.e produce two identical copies of itself, before a cell can divide. During replication, the double stranded DNA unwinds into a replication fork consisting of two single strands of DNA.
These single strands of DNA are called leading strand (runs from 3'-5') and lagging strand (runs from 5'-3'). These single strands that runs at opposite direction from one another exists at the replication fork because the two strands of DNA are antiparallel i.e. are opposite to one another, and DNA polymerase can only add new nucleotides onto a 5' end.
Leading and lagging DNA strands exist at a replication fork because the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5 'end.
A replication fork is the juncture between two strands of DNA when it is replicating itself.
In each of them (speaking of the homologous strands) the opposite chain is carried out to have the double genetic information when approaching cell division.
The direction in which the enzymes act is unique from 5 'to 3', this determines the template chain must have the direction 3'→ 5', so that the new chain in formation, complementary and antiparallel, has the direction 5 '→ 3' coinciding with the enzyme's working system.The basic reaction that takes place in replication is a polymerization reaction, in a growing DNA chain a nucleotide is incorporated whose base is complementary to that of the template chain.The DNA polymerases at the two ends of the free nucleotide to be incorporated use its phosphate group or 5 'end to add it to the growing chain.Therefore, we can conclude that leading and lagging DNA strands exist at a replication fork because the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5 'end.
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Two differences between primary and secondary metabolites
Answer:
Image result for Two differences between primary and secondary metabolites
Primary metabolites are not species-specific and thus might be identical in some organisms. Secondary metabolites are species-specific and thus are different in different organisms. Primary metabolites are involved in the growth, development, and reproduction of organisms.Aug 18, 2020
Why would breeders want to introduce mutations into a population?Single line text.
Short answers please
Answer:
Breeders can increase the genetic variation in a population by inducing mutations, which are the ultimate source of genetic variability
A Pansy is a small flowering plant. You often see many red and many white flowers in outdoor garden beds. If the red and white colors
follow a codominant pattern, what is the genotype for the offspring of a cross between a red flower and a white flower?
A. W
B. RR
C. RW
D. Ww
Answer:
RW
Explanation:
Red and white follows a codominant pattern, which means they are both dominant. Dominant allles are capital letters so the genotypes of the parents are:
Red flower - RR
White flower - WW
The offspring will receive one allele from each parent, so they will inherit one R and one W, making the genotype of the offspring RW
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Write which type of eclipse is occuring in each picture. Write either "SOLAR" or "LUNAR".
Answer:
1st is lunar, second is solar
Explanation:
You have been chosen to lead Brampton's first ever space mission. Referencing what you've learned about day to day living in space, identify 3 differences you will experience between daily routines in space, and daily routines on earth.
Answer:
Doing experiments, maintenance and cleaning.
Explanation:
Astronauts perform tasks of the day which is supervising experiments, performing routine maintenance on station equipment and the astronauts wipe the walls, floors, and windows to keep them clean in order to avoid any type of microbial growth. Most of the activities are similar in space to the earth i.e. sleeping, eating the meal three times a day and exercise to maintain health and become active all the day.
What are some indirect changes on Earth from Climate Change
(Greenhouse Emissions)?
a. Coral Bleaching
b. Ocean Acidification
c. Sea Level Rise
d. All of the above
Answer:
The answer is D.All of the above
Answer:
D
Explanation:
1: Coral Bleaching happens when 2 to 3 degree temperature changes.
2: carbon dioxide (CO2) in the atmosphere is being absorbed at the surface of the ocean at an increasing rate. This excess CO2 results in more hydrogen ions, which increases the acidity of the ocean.
3: sea level rise happens when ice caps or glaciers melt.
4: it's all of them
Which of the following statements is true?
All mammals give birth to live young.
Mammal babies are weak and dependent on their mothers.
Mammal babies go through a larval stage.
Mammals reproduce using mitosis and budding.
Answer:
The first one is the true statement.
Explanation:
Please Help!!!!!!
The cell is opening up its DNA during replication. If one side of the helix reads ATG CAA TGG GTC, how will the bases be added to make a new strand?
Answer:
TAC GTT ACC CAG
this is the new strand
20 points real answers please and thanks
Which statement is true?
- The higher the temperature in water, the higher amount of salinity in the water
- The lower the temperature in water, the higher amount of salinity in the water
Answer:
First one is right.
Explanation:
When the water molecules of the ocean become heated, they expand thus, they can hold more salt than cold water; and have a higher salinity.
internal fertilisation takes place………………………..
(a) inside male body
(b) inside female body
(c) outside female body
(d) outside male body
Answer:
b. inside female body
Because of the male sperm goes into the wormas egg and Fertilises it
I am made of many cells, which makes me __________. I make my own food through a process called photosynthesis. This makes me a__________.
Answer:
multicellular
Explanation:
plant cell
Answer:
I am made of many cells, which makes me multicellular. I make my own food through a process called photosynthesis. This makes me a(n) plant/ autotroph .
Explanation:
1. What is the food eaten by an organism used for? Multiple choice.
A. Cellular respiration and waste production
B. Waste production and biomass increase
C. Cellular respiration, biomass increase, and waste production
D. Biomass increase and waste production
Answer:
1. What is the food eaten by an organism used for? Multiple choice.(C)
Explanation:
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A scientist thinks he has discovered a drug that
interferes with the functioning of a virus in the
human body. To effectively block infection, the
drug can
I
A weaken viral respiration.
B destroy viral mitochondria.
C reduce the ability of the virus to absorb cells.
D prevent the virus from entering cells.
Answer:
DExplanation:
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What industry is related to the production of plastics?
Answer:
chemical industry
Explanation:
The plastics industry manufactures polymer materials—commonly called plastics—and offers services in plastics important to a range of industries, including packaging, building and construction, electronics, aerospace, and transportation. It is part of the chemical industry.
Help please please .......
30 points picture shown! only real answers pretty please
The picture below shows the satellite image of ocean surfaces on Earth at Locations A, B, C, and D.
Which of these graphs best models the waves in the four locations?
Answer:
B
Explanation:
A lipid is composed of a glycerol molecule and how many fatty acid chains?
A particular species of lizard can range in body color from dark brown to light brown. Body color influences how well an individual lizard can hide from predators. The more similar a lizard's body color is to the soil in its environment, the less likely it is to be seen by a predator The two graphs below represent two similarly-sized populations of lizards in similar environments that have medium-brown soil. Population 1 Population 2 Number of Individuals Number of individuals darker lighter darker lighter Body Color Body Color Suppose an environmental change that causes the soil color to become much different occurs in both environments. Which of the following is true?
Answer:
A- Population 1 is more likely to adapt and survive than population 2 because there is more variation related to body color in population 1.
Explanation:
In order for natural selection to occur, organisms within a population must have some genetic variation. That is, organisms within a population must have some traits that are different from one another. The more genetic variation that exists in a population, the better able the population is to handle environmental changes because it is more likely that at least some individuals will survive and reproduce.
The graphs show that population 1 exhibits a greater degree of genetic variation than population 2 in terms of body color. This means that if the soil in the environments where these populations live changes, it is more likely that some of the individuals in population 1 will survive and reproduce due to having advantageous body color in the new environment. Therefore, population 1 is more likely to adapt and survive than population 2 because there is more variation related to body color in population 1.
What is one of the primary functions of this food in the body?
building proteins
O storing energy
providing structure to cell walls
carrying genetic information
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Save and Exit
Mark this and retum
Answer:
building proteins storing energy providing structure to cell walls carrying genetic information building proteins. storing energy. providing structure to cell walls.
Consumers in the reef can be further classified as filter feeders, or organisms that eat plankton by filtering water; grazers, or organisms that feed on organisms that don’t move; and predators, or organisms that eat other animals. List at least one example of each.
Filter Feeders -
Gazers -
Predators -
Answer:
Filter feeders-tubeworms, basket stars, clams,& sponges... there are many more
Grazers- Sea urchins, damselfish, surgeonfish & cobalt algae... and more
Predators- whales, sharks, barracudas, &dolphin... several more
Muliple choices
Hope this helps :)
Which of the following air pollutant can be released by natural wild fires?
ozone
mercury
smog
carbon monoxide
Answer:
carbon monoxide
Explanation:
Carbon monoxide is often released from wildfires.
The air pollutant that gets released by natural wild fires is carbon monoxide. The correct option is D.
What is an air pollutant?Air pollutants are natural and man-made airborne substances that are introduced into the environment in sufficient concentrations to have a discernible effect on air quality.
Large amounts of carbon dioxide, carbon monoxide, black carbon, brown carbon, and ozone precursors are discharged into the air by wildfires. These emissions have such a regional and even global impact on radiation, clouds, and climate.
Thus, the correct option is D.
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Down syndrome is a common genetic disorder that is caused by having an extra copy of chromosome 21. Which method will show whether or not a baby has down syndrome?
a. Karyotype
b. Family history
c. Genetic survey
d. Punnett square
Answer:
a. Karyotype
Explanation:
Karyotypes describe the chromosome count of an organism, so all the chromosomes would be in front of you, and it'd be easy to tell if there are 2 or 3 chromosome 21.
what
is added to make RNA?
This oceanic zone contains some of the
deepest parts of the ocean.
A. Kelp Forest
B. Abyssal Zone
C. Coral Reefs
The abyssal zone, which lies between 4,000 and 6,000 meters (13,000 and 20,000 feet) below the surface, is the deepest region of the ocean. So, option B is the answer.
The region of the ocean that lies beyond the continental shelf is commonly referred to as the oceanic zone. The sunshine zone, twilight zone, midnight zone, and abyssal zone are the four vertical zones that make up the open ocean.
Abyssal zone is characterized by high pressure, low temperatures, and very little light.
Kelp forest is found in shallower areas, often between 20 and 100 meters deep and Coral reefs are located in tropical, shallow waters.
Therefore, option B is correct.
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Which of the following is true about the release of histamine from cells in nasal passages?
All of the above
It may cause increased secretion by mucous membranes.
It occurs during an allergic reaction.
It causes nearby capillaries to swell.
Answer:
Urticaria (Hives)
Hives are an inflammation of the skin triggered when the immune system releases histamine. This causes small blood vessels to leak, which leads to swelling in the skin. Swelling in deep layers of the skin is called angioedema.
Explanation:
Which of the following is not a benefit to humans from biodiversity?
A. Many medications are made from living organisms
B. Enjoyment from recreational activities
C. We have a variety of products produced for clothing, food, and other items
D. The weather is more comfortable
For me it's letter A.
Because B and C and D are benefits of biodiversity....So that's why,for me it's letter A.
Well,don't trust me if you don't want to
1. Which factor is abiotic?
A. soil
B. plants
C. insects
Answer:
The answer is A. Soil
Explanation:
..........
The Answer is:
A. Soil
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