Answer:
A pure strain is a strain containing only a single type of genetic material (of its own) within it.
Explanation:
Which step in the development of cancer is the most dangerous?
Growth of tumor
Formation of tumor
Metastasis of cancer cells
Abnormal division of cells
Answer:
answer is b
Explanation:
Harry is given an unknown substance and wants to determine what kind of mixture it is. The mixture is cloudy, and after a few minutes it separates into two distinct layers. The bottom layer is murky, and the top layer is clearer. What type of mixture is this?
Answer:
Heterogeneous
Explanation:
Which of the following is NOT a solid waste?
O Grass Clippings
O Cooking Oil
O Runoff
O Leaves
The ________
trophic level is known as the producer level
a.first
b second
C.third
d None of the above
Answer:
first (base on)
Explanation:
Answer the following questions about the probable
offspring of two heterozygous parents.
6. Enter out of 16 offspring are likely to
have smooth, green pods.
7. Enter out of 16 offspring are likely to
have smooth, yellow pods.
8. Enter out of 16 offspring are likely to
have wrinkled, green pods.
9. Enter out of 16 offspring are likely to
have wrinkled, yellow pods.
Check Answer
Answer:
6. 9
7. 3
8. 3
9. 1
Explanation: did it and got it right lol
is immunity a function of proteins
Answer:
Yes
Explanation:
Of the many functions of protein in your body, one of its most critical is supporting your immune system. The immune response protects you against harmful microorganisms, including viruses and bacteria, as well as foreign substances that might attack your defenses, such as a thorn or flames from a fire.
10 examples of unwanted friction that can be lowered
Answer:
List three ways of reducing friction. 1.Polishing the rough surface. 2.Providing all bearings or wheels between the moving parts of a machine or vehicles reduce friction and 3.allow smooth movement as rolling friction is less than sliding friction.
Which statement best describes natural selection?
Answer:
The answer is A.
Explanation:
this needs to be done ASAP!
Answer:
what is it?/
Explanation:
i cant help what i cant see or read
You have two protons. How do they interact with one another?
Answer:
Explanation:
Explain to students that two protons repel each other and that two electrons repel each other. But a proton and an electron attract each other. Another way of saying this is that the same or “like” charges repel one another and opposite charges attract one another.
What does the environment mean?
Answer:
the surroundings or conditions in which a person, animal, or plant lives or operates
The _____
cells have identical genetic information, or DNA.
sex
egg
somatic
haploid
Answer: sex cells
Explanation:
Sex cells have genetic information and DNA
Color blindness, a sex linked trait, apears more often in __________ than in ____________.
a) males, females
b) females, males
c) Neither
Answer:
I think I am not so sure about it but I think it is B if not I think A
Genetics is the branch of biology that involves the study of how different traits are transmitted from one generation to the next.
O True
O False
A rock sample has 25% of its original radioactive element and the half-life of the
element is 1 million years. How old is the sample?
A.)2 Million Years
B.)0 1 Million Years
C.)500.000
D.)50,000
Answer:
c 500000
Explanation:
the half was 1000000 so it's 2000000 and 25% of that is 500000
Which molecule brings amino acids to the ribosomes to be assembled into proteins
Answer:
Was this fast anseering
Explanation:
dasdasd
A zebra embryo is in the early stages of development. The cells are beginning to look different from each other.
Which statement is the best description of what is happening to the zebra embryo?
Meiosis is breaking down old cells to form new ones.
Mitosis is making identical new cells from the original cells.
The cells are differentiating so that they have specialized functions
Cellular respiration is making many different types of cells.
Answer:
The cells are differentiating so that they have specialized functions
Explanation:
Answer:The cells are differentiating so that they have specialized functions
HELP ASAP!! 2 MINUTES!! I'll give brainliest and points and thanks if you get it right just question 2, you can do question 3 for extras
TRUE OR FALSE:
Selective breeding cannot be used to produce pest-resistant crops.
Answer:
false
Explanation:
A woman without hemophilia marries a man with hemophilia they have a daughter with hemophilia what is the genotype of the mother and father
Answer:
Mother- XXH
Father- XHY
Explanation:
The mother is a carrier for hemophilia and since the disease is sex linked and found on the X chromosome, only one of the alleles has that H allele attached to it. The father is male so he only has one X chromosome, which is why he is effected by the disease and not just a carrier like the mother.
A response is a “reply” or a “reaction.” Use this information to explain why the health damage that results after exposure to a harmful chemical is called a response.
A chemical substance is a stimulus which produces a response or reply in the body.
What is a stimulus?A stimulus is a factor or agent that produces a response in the body of a living organism.
When a stimulus is received by the body, it produces a response.
A harmful chemical that is introduced to the body is a stimulus which could cause damage to the body.
The response the body produces to the chemical substance would be to help the body recover.
Therefore, a chemical substance is a stimulus which produces a response or reply in the body.
Learn more about stimulus and response at: https://brainly.com/question/670137
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Which is true of hydrolysis reactions?
I NEED HELP FAST
Question: Asexual reproduction by Astrammina Rara...
A. Involves an egg and a sperm
B. Requires a male and a female
C. Reduces the variation in the offspring
D. Increases the variation in the offspring
Answer:
b
Explanation:
because of you have a sperm and an egg it wont be right and the others aren't well described
Explain how the unique properties of water are used by plants?
Drag each label to the correct location on the image.
Match each digestive juice or enzyme to the organ where it performs.
-hydrochloric acid
-saliva
-pancreatic juices
Answer:
-saliva
-hydrochloric acid
-pancreatic juices
Explanation:
When the food such as carbohydrates enters our mouth, the saliva enzyme starts break down of that carbohydrate. Then the food enters the esophagus and then reaches the stomach. In stomach, hydrochloric acid is present which helps in digestion of food. Then the food enters the small intestine and their pancreatic juice is present which also helps in break down of sugars, fats, and starches.
Phylogeny can be based on morphological homologies and molecular homologies. What are the advantages and limitations to using each
Answer:
1. Molecular data:
- Advantages:
a. less susceptible to evolutionary convergence
b. huge amount of potential characters available for data comparison (each nucleotide can potentially be used to assess the state of a character)
c. useful for assessing times of divergence
- Disadvantages:
a. multiple sequence alignments are hard to solve for sequences with high evolutionary rates
b. limitation to the number of states of the character
c. generally unuseful for comparing with data from extinct species
d. difficulties of inferring positional homology
2. Morphological data:
- Advantages:
a. useful to understand the evolutionary significance of traits in extinct ancestral species
b. there is not limitation to the number of different states of the character
- Disadvantages:
a. susceptible to evolutionary convergence
b. limited number of characters is available
Explanation:
Morphological and molecular data are the two primary sources of information used to infer homology. In the last years, molecular data gained ground for this purpose. However, it should be stressed that molecular data only have 4 different states (i.e., 4 different types of nucleotides), while for morphological data in principle there is not limitation to the number of different states. On the other hand, morphological traits are more susceptible to evolutionary convergence, thereby leading to spurious results when assessing the homology of problematic characters. Finally, it is important to highlight that morphological data are generally more useful to understand the origin and homology of traits in extinct species.
What is the difference between an autotroph and a heterotroph?
Answer:
Autotroph produces its own food (Plants)
Which layer of Earth has partially melted material that moves the tectonic plates?
A: crust
B: inner core
C: mantle
D: outer core
:) thank you
Answer:
c
Explanation:
the mantle is the layer where there are materials are melted
Answer:
Explanation:
mantle, just took the test :)
What is the correct Answer?
How does the double helix structure of DNA explain how the molecules can be copied or replicated
Answer:
How does the double-helical structure of DNA explain how the molecules can be copied or replicated? Because of base pairing, each strand has all the information to serve as a template for the other strand. DNA replication occurs only during the S phase of the cell cycle.
Explanation:
Because of base pairing, each strand has all the information to serve as a template for the other strand. DNA replication occurs only during the S phase of the cell cycle.
What is DNA?Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. The DNA of an individual can be found in almost all of their cells.
The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA in the mitochondria (where it is called mitochondrial DNA or mtDNA). Cellular organelles called mitochondria transform the energy from food into a form that can be utilized by cells.
Adenine (A), guanine (G), cytosine (C), and thymine (C) are the four chemical bases that make up the code that stores the information in DNA (T).
Therefore, Because of base pairing, each strand has all the information to serve as a template for the other strand. DNA replication occurs only during the S phase of the cell cycle.
To learn more about DNA, refer to the link:
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