The bonds that hold the tro stands of DNA together come from?
A. the attraction of phosphate groups for each other
B. strong bonds between cogenous bases and deoxyribose.
C. wesk hydrogen bonds between the nitrogenous bases
Which of these materials cannot cross the placenta from mother to fetus?
water
oxygen
alcohol
antibiotics
HIV virus
nicotine
nutrients
DNA
Answer:
alcohol is the answer i think
Answer:
its not alcohol. i think it is dna because dna from the mother and father are givin at the time of the sperm fertilizing the egg
how does the digestive system interact with the musculoskeletal system
The honeybee has 32 chromosomes in their somatic cells. They undergo meiosis but can
produce offspring drones without fertilization. How many chromosomes does the drone have?
What does this mean for the drone?
Answer: 32 chromosomes, they are clones of the parent drone
Explanation:
The production of offspring drones without fertilization means that offspring that are produced are produced by mitosis, which results in daughter cells that are clones of the parent. They have the same amount of chromsomes as the parent drone, which is 32.
In which place would people most likely use solar energy?
Answer:
where they got a lot of sun exposure during the day
Explanation:
because the solar energy uses sun rays to get the energies supplied and needs longer sun exposure
Which of the following explains the role of plants in the carbon cycle?*
(1 Point)
Plants transfer oxygen and carbohydrates in the biosphere to carbon dioxide in the atmosphere.
Plants transport carbon dioxide in the atmosphere to groundwater.
Plants transfer carbon dioxide in the atmosphere to carbohydrates in the biosphere.
Plants transfer oxygen in the atmosphere to fossil fuels.
Answer:
Plants transfer carbon dioxide in the atmosphere to carbohydrates in the biosphere.
Explanation:
Plants are unique organisms being that they have the unique ability to manufacture their own food via the process of PHOTOSYNTHESIS. Hence, they are called AUTOTROPHIC. Photosynthesis is the metabolic process by which plant cells make sugar (glucose) in the presence of sunlight.
However, in the photosynthetic process, plants require inorganic source of carbon called CARBON DIOXIDE (CO2) and water to perform the process. The chemical overall reaction of photosynthesis is as follows:
6CO2 + 6H2O → C6H12O6 + 6O2
This explains the role of plants in the carbon cycle as they help transfer carbon dioxide (CO2) in the atmosphere to carbohydrates in the biosphere (living organisms).
b) The frequency of allele A, is 0.3 or 30%. Does this mean that 30% of the individuals in the
population will have an A, phenotype? (1 point)
Answer:
no because 0,3 is 3/10 and not 30$
RNA differs from DNA in that RNA has?
A. a double strand and contains uracil.
B. a single strand and contains adenine.
C. a single strand and contains uracil.
Answer:
C. a single strand and contains uracil.
Explanation:
DNA has 4 bases: adenine, cytosine, guanine, and thymine and is double stranded while RNA is one stranded and instead of thymine, it uses uracil.
Hope this helps :)
What are the 2 laws Mendel came up with?
Mendel's Laws of Heredity are usually stated as: 1) The Law of Segregation: Each inherited trait is defined by a gene pair. ... 2) The Law of Independent Assortment: Genes for different traits are sorted separately from one another so that the inheritance of one trait is not dependent on the inheritance of another.
Millions of years ago, plants evolved from living in the water, to living on land. Name and describe the structures and mechanisms used by plants today to survive in a dry (land) environment.
Answer:
desiccation tolerance, alternation of generation
Explanation:
Adaptation to life on land, took place by desiccation tolerance that is the ability of the organism to stand or endure extreme dryness and the alternation of generations such as the life cycle changes in which the haploids and diploids change or show haplodiplontic. The development of the phloem and xylem tissues for distribution of water and intake up of minerals from the soil. Development of stem for gas exchange. Some plants have defense strategies for the dry environments such as seedless sprout growth.Which of these substances are always harmful to
the respiratory system?
-asbestos
-pollen
-toxic chemicals
-tobacco smoke
-pollution
Answer:
asbestos
toxic chemicals
tobacco smoke
pollution
Explanation:
1
What gas do plants take in from the air for photosynthesis? (6.L.1.2)
Carbon Dioxide
Oxygen
Helium
Hydrogen
1
What does the length of night or dark periods control in flowering plants? (6.L.1.1)
Reproduction
Flowering
Smell
Color
A.
B.
C.
D.
Astronomy.
Answer:
c
Explanation:
Mercury has a very thin atmosphere. In fact, Mercury's atmosphere is so thin that is barely exists. The atmosphere is calculated as the thinnest atmosphere of all the planets in our Solar System.
hope this helps!
What challenges do researchers trying to breed fungus-resistant Cavendish bananas face?
The two diseases currently attacking banana crops around the world are known as Black Sigatoka and Panama disease. Both are caused by fungi species which grow inside banana organs, draining away their nutrients or reducing their ability to photosynthesise. These fungal parasites slowly starve the banana to death.
Explanation:
Parent strand of DNA is CCTAGCT. What is the complementary strand?
Answer:
GGATCGA
Explanation:
Adenine goes with thymine and Cytosine e goes with guanine.
Basically A is with T; C is with G
Note that:
C matches with G
T matches with A
In this case, the strand of DNA given is CCTAGCT. The complementary strand would therefore be GGATCGA.
~
Water, carbon dioxide, oxygen, and some other substances can pass through the cell membrane because...
Group of answer choices
they are organic.
they are small and nonpolar.
they are hydrophobic.
they are polar.
Answer:
its a
Explanation:
they are all organic
Describe a situation in which a bacteria-free environment would be desirable: not desirable:
desirable: When observing bacteria
not desirable: When eating food.
what is the principle of common descent?
PLEASE HELP! You have to figure out if there a advantage or disadvantage.
Answer:
Advantage, Disadvantage, Advantage, Disadvantage
Explanation:
Infecting a host easier is an advantage because they can reproduce more
Little diversity means they are killed more
Using little energy to produce means they can reproduce more
Not being able to adapt would lead to a less likely chance of survival
1. disadvantage
2.advantage
3.disadvantage
4.advantage
Explanation:
no need to explain
Is soil necessary for secondary succession? (yes or no)
Answer:
Yes
Explanation:
The stages of secondary succession are similar to those of primary succession; however, primary succession always begins on a barren surface, whereas secondary succession begins in environments that already possess soil.
Answer:
The stages of secondary succession are similar to those of primary succession; however, primary succession always begins on a barren surface, whereas secondary succession begins in environments that already possess soil.
Secondary succession occurs when the severity of disturbance is insufficient to remove all the existing vegetation and soil from a site. Many different kinds of disturbances, such as fire, flooding, windstorms, and human activities (e.g., logging of forests) can initiate secondary succession.
Which of the following best describes the principle of independent
assortment?
Answer:
Law that states that the segregation of any pair of alleles is independent of any other pair of alleles . As a result each pair of gametes receives one member of every pair of alleles.no influences from other alleles is necessary.
Explanation:
The temperatures in cities near the coast are? Please help I’m begging
Answer:
the third row
Explanation:
Reactions that consume CO2 take place in?
Answer:
The Stroma of the chloroplast.
Explanation:
This answer is correct
Somatic stem cells can be turned into as many types of cells as embryonic stem cells
True
Fasle
The given statement Somatic stem cells can be turned into as many types of cells as embryonic stem cells is false.
Somatic stem cells are also known as adult stem cells and are found in various tissues throughout the body. While they have the ability to differentiate into multiple types of cells within their tissue of origin, they are generally limited in their ability to differentiate into other types of cells.
Embryonic stem cells, on the other hand, have the ability to differentiate into all cell types of the body, which is why they are considered pluripotent. They are derived from embryos during the early stages of development and are therefore not found in adult tissues.
In summary, while somatic stem cells have the ability to differentiate into multiple cell types within their tissue of origin, they are not as versatile as embryonic stem cells and cannot differentiate into as many types of cells.
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Which statement is false abt interphase.
DNA is replicated during interphase.
Interphase Only happens in mitosis.
Interphase happens once before meisis.
The cell grows during interphase.
Answer:
Hmm I'll put which is true and false for you :3
DNA is replicated during interphase: True
Interphase only happens in mitosis: False
Interphase happens once before mesis: True
The cell grows during interphase: True
There you have it :3
Explanation:
:3
Answer:
Interphase Only happens in mitosis.
Explanation:
Interphase Only happens in mitosis is the correct answer because it is the false one to the guestion.
What is the most important thing for an enzyme to be able to
bind to a substrate?
Answer:
The enzyme 's active site binds to the substrate. Increasing the temperature generally increases the rate of a reaction, but dramatic changes in temperature and pH can denature an enzyme, thereby abolishing its action as a catalyst.
Explanation:
mark brainliest please
Does anyone else have this assignment from ReadWorks?
Importance of Fresh Water - Paired Text Questions
How Water Loss Affects Biodiversity Water from the Air: Cloud Forests
Use the articles "Water from the Air: Cloud Forests" and "How Water Loss Affects
Biodiversity" to answer questions 5 to 6.
5. Compare the language used by the author to show a cause-and-effect relationship in the quotation from "How Water Loss Affects Biodiversity" with the language used to show a cause-and-effect relationship in the quotation from "Water from the Air: Cloud Forests."
Does your conclusion support or reject your hypothesis?
Your conclusion should only support your hypothesis if your hypothesis is correct if not in the conclusion put what was actually the awnser and how it compared to your hypothesis
Okazaki fragments are formed on which strand?
Answer:
The leading strand is continuously synthesized and is elongated during this process to expose the template that is used for the lagging strand (Okazaki fragments). During the process of DNA replication, DNA and RNA primers are removed from the lagging strand of DNA to allow Okazaki fragments to bind to.
Explanation:
Hope it helps
A cladogram of feline species is shown.
Answer:
C
Explanation:
i took test and got a 100%
Tiger (Panthera tigris) and lion (Panthera leo) are the most closely related species among the other feline species.
What are feline species?Feline species refer to various types of cats or other members of Felidae family. This family includes both big cats as well as small cats, such as domestic cat and large tiger both come under this family. A total number of 40 species of felines are known today, where they are distributed in various habitats around the world.
Some common examples of feline species include the lion, leopard, jaguar, domestic cat, etc. Each feline species has their own unique characteristics that allow them to survive under their respective habitats.
The two feline species that are most closely related in the given list are tiger (Panthera tigris) and the lion (Panthera leo). They both belong to Panthera genus within the Felidae family. The other feline species are not closely related as the tiger and the lion.
Therefore, tiger (Panthera tigris) and the lion (Panthera leo) are the most closely related species.
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