Why is difficult to make a list of characteristics of life
Answer:
"Being alive" is the most important characteristic of life. According to science the answer is different. Biology is the branch of science deals with the study of life and living matter in all its forms and phenomena.
Explanation:
Its difficult because sometimes beings can easily be side tracked
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Which of the following plant is associated with Chronic Obstructive Pulmonary Disease in horses?
a.Eupatorium adenophorum
b.Lantana camara
c. Quercus griffithi
d. Bracken Fern
What’s the relationship between ants and large blue butterfly larva?
a) competition
b) predation
c) mutualism
d) commensalism
Answer:
its D commensalism, one benefits from it and the other gets no harm
Explanation:
can someone answer all these questions
Answer:
3 is humidity 2nd don't ask me..
How can the group be sure it is calcite?
A)
use the acid test
B)
see if it breaks into sheets
C)
see if it is attracted to a magnet
D
compare the color to other minerals
Answer:
The correct answer is - a) use the acid test.
Explanation:
In this chart, there are many minerals that share different properties with one another such as hardness, color, and luster of the minerals so on the basis of physical properties the group of students can not be sure if the given mineral is calcite or not.
To be sure if the given mineral is calcite the group of students must test the acid test which is specific for the calcite and if the test produces bubbles it is confirmed that the given mineral among these minerals is calcite.
white eyes are recessive in flies. can two red eyed flies have white eyed offspring
Answer:
Considering that white eyes are a recessive trait in flies, it is possible for two red-eyed flies to have offspring with white eyes only if both are heterozygous for this trait.
Explanation:
For two individuals with dominant phenotype for a trait to have offspring with the recessive trait, both must have a heterozygous genotype.
In the case of the characteristic eye color of the flies :
Red eye (R) is dominant trait. White eyes (r) is the recessive trait.When both parents are heterozygous, their genotype is Rr
In Punnett Square it can see the result of the crossing of these individuals:
Punnett Square :
Rr X Rr
Alleles R r
R RR Rr
r Rr rr
In the offspring, the probabilities are:
50% heterozygous individuals Rr, with red eye phenotype. 25% pure dominant individuals RR, with red eyes 25% individuals with the recessive rr genotype, white eyes.This is the possibility of two red-eyed flies having white-eyed offspring.
Ann is observing the temporal bone and locates the jugular foramen and the jugular fossa. What two types of bone markings has she identified?
A. An extension and arounded process
B. A rough elevation and analytiat surface
C. A hole and a depression
D. A sit and an expanded end
Answer:
C. A hole and a depression
Explanation:
The jugular foramen is located at the base of the skull, it is oval in shape and from there emerges the internal jugular, which after emerging this intracranial vein this same forms the jugular fossa which is where it rests.
hi guys I need help with those questions can somebody help me please am doing a science fair project
the problem is CAN PLANTS STOP SOIL EROSION?
what can we put a title for this problem
what is the hypothesis for this problem
please help
Answer:Name for project.SOIL SAVERS. plants can stop soil erosion because the roots in plants keep the soil intack. this has already proven true by scientists and farmers. planting plants that has a large root system keeps more soil in. planting carrots and potatoes does not help keep the soil still because they have small root system.
Having freckles is a dominant trait, and not having freckles is a recessive trait. Which set of parents will not have any children with freckles? A. A mother with FF and a father with ff O B. A mother with Ffand a father with Ff O c. A mother with ff and a father with ff
As freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait, i.e., ff. The correct option is C.
What are recessive traits?Recessive trait is a trait that really should be transmitted by both parents in order to be present in the offspring. Recessive features might exist in a person's DNA but not manifest in that individual.
As in the given case, F denotes dominance, and f denotes recessive character. Dominant trait always superimpose over the recessive one.
So, as freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait i.e., ff.
Thus, the correct option is C.
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Answer:
c
Explanation:
HELLO I NEED HELP ASAP!!
what is biomolecule
Answer:
well
bio means study of life
and yk what a molecule is
so I think it means study of molecules?
NEED HELP ASAP WILL GIVE BRAINLIST
Dead cells with narrow lumen, lignified cell wall with a few or
numerous pits and serving a mechanical function only are called -
Collenchyma
O
Xylem
O
Aerenchyma
O
Sclerenchyma
Answer:
The correct answer is - Sclerenchyma
Explanation:
Sclerenchyma are the dead cells with narrow lumen lignified cells. These dead cells has numerous pits that helps in trading the various substances to neighboring cells. At matuarity, hese cell lack the protoplast so therefore called dead cells .
Sclerenchyma cells are lignified which makes them thick and these cells help in the supporting the plants. These cells are impereable to almost everything gases, substances and many more.
In the compound microscope, If you see bacteria move to the right,
this bacteria on the slide, really move to:
O a. Left
b. Downward
on
c. Upward
O d. Right
Clear my choice
Answer:
a
Explanation:
In a compound microscope, if a bacterium moves to the right, the bacterium on the slide, in reality, moved to the left.
This is because the optical system of the compound microscope is designed in such a way that the lenses change the orientation of the image of objects when viewed.
The system of two lenses - the objective and the eyepiece - produce inverted images of objects on slides. Hence, when an object on the slide under the compound microscope moves to the right, it is seen as moving to the left to the viewer and when it moves up, it is seen as moving down by the viewer.
The correct option is, therefore, a.
This cell part contains an eukaryotic cell's DNA. *
O Endoplasmic Reticulum
O Ribosomes
O Golgi Apparatus
O Nucleus
What major factors play a role in global warming?
Answer:
1. Carbon dioxide levels in the Earth's atmosphere have been steadily increasing.
Explanation:
which respiratory substrate has a respiratory quotient of 0.5
The bacterial RecA protein (and its counterpart in eukaryotes, Rad51) are involved in, and help direct: ________.
a. chromatin packing and heterochromatin formation
b. Apurinic site repair
c. Post-transcriptional regulation
d. Strand invasion
Answer:
The appropriate alternative is Option b (Apurinic site repair).
Explanation:
Although these antibodies eliminate compromised DNA bases through midriff of N-glycosylic attachments, maintaining perhaps an apurine or perhaps even apyrimidine site today.RecA connects towards DNA damage as well as precipitates recombinant restoration through doulas branch fracture pairing or daughter strand difference restore.Other solutions aren't relevant to the situation in question. So that the answer above is the right one.
138) Six-year-old Matthew broke his femur and one of his epiphyseal plates was damaged. Explain the role of the epiphyseal plate in longitudinal growth and predict the effects of a damaged epiphyseal plate on his future longitudinal growth.
Answer:
The function of the physis or growth plate is to allow the growth in length of the bones (both long as short) through the endochondral ossification process.
Explanation:
The epiphyseal plates are areas of active growth of new bone at the ends of the bones, made up of cartilage that hardens once the child is fully developed. Epiphyseal plates help determine the length and shape of the adult bone eventually. It is the last part of the bones to harden, and therefore they are vulnerable to fractures. The complication of the involvement of the growth plate is the deformity or lack of growth of the bone, leaving the limb twisted or shorter than the contralateral one.Growth disturbances are more frequent when the affected area is very large or when it involves the area of the knee joint. In cases of shoulder or wrist involvement, deformities rarely occur. The alterations are more common when the lesions occur in younger children, because they have a longer growth period.
Organisms that have very different taxonomies (e.g. are from different families) but look very similar represent an example of
Considering the drifting of continents, how do you explain the abundance of marsupials and the absence of native placental mammals in Australia
Answer:
this phenomenon is a natural consequence of evolutionary processes and continental drift
Explanation:
Marsupials are mammals in which newborn offspring are carried in a pouch of the female (mother) body. On the other hand, placentals are mammals that complete embryo development in the mother's body, in the placenta. All the extant marsupials are endemic to Australia and the Americas. It has been shown that marsupials diverged (evolved) in South America, Australia and Antarctica when these landmasses were joined. In Australia, marsupials evolved to fit an ecological niche, which can be attributed to geographic isolation due to continental drift, while placental mammals are relatively recent and more scarce (mainly bats and rodents) within this region.
Question 8 (3 points)
Using the diagram below, identify the ONLY portion of the nucleotide that is not the same in every piece of DNA. (phosphate, sugar, or base)
Answer:
Base
Explanation:
Deoxyribonucleic acid, DNA, is one of the four major biomolecules in living organisms. It is a polymer made up of monomers called NUCLEOTIDES. The nucleotides that make up a DNA molecule is composed of three substances namely: Sugar (deoxyribose), nitrogenous base, and a phosphate group.
However, among these three components of the nucleotide monomer, NITROGENOUS BASE is the only portion that is not the same in every DNA molecule. There are four nitrogenous bases in nature viz: Adenine, Guanine, Cytosine and Thymine. These four bases can be alternated in a DNA molecule.
Note that, phosphate group and deoxyribose sugar are constant in every DNA.
dont answer if you ont know it
The more bonds an atom can make, the more likely it is to combine with other atoms in different ways.
Which element is most likely able to make the greatest variety of bonds?
nitrogen
hydrogen
oxygen
carbon
Answer:
hydrogen
Explanation:
this is because hydrogen has a valency of 1 and has only one electron in it's outer most energy level thus able to bond with many elements easily
Whoever answers gets brainlist!
Answer: universe, galaxy ,solar system, planet, moon, star
Explanation:can i get brainliest
i think thts the right order
If a female fruit fly is heterozygous with the allele for white eyes being recessive and the red eyes being dominant on the X-chromosome. She is crossed with a hemizygous red eyed male, what would be the expected ratio of male and female phenotypes if they were bred together?
Answer:
100% red eyes because there is 50% AA and 50% Aa.
Explanation:
To find the expected ratio of male and female phenotypes if they were bred together, you need to make a punnett square/table.
Female: A a
"A" is white eyes, which is RARE. "a" is red eyes, which is COMMON.
Male: A A
"A" is red eyes, which is COMMON.
Multiply Aa x AA by a punnett square.
GUIDE:
1. AA is common and does not carry the recessive gene of being white-eyed. 2. aa is rare and carries the recessive gene of being white-eyed.
3. Aa is common as being red-eyed since being red-eyed is dominant, but carries the recessive gene of being white-eyed.
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Which of the following organelles would not be present in the nerve cell of the humpback whale?
A. Plasma membrane
B. Cell wall
C. Mitochondria
D. Lysosome
Answer: b
Explanation:
Evolution is change in a population over time and includes the gene pools of that population. How does biogeographic
isolation allow for the change of gene pools over time?
O Biogeographic isolation affects the random changes that take place within gene pools.
O Biogeographic isolation causes changes in gene pools that result from populations being separated.
O Biogeographic isolation determines who will win competition for mates
O Biogeographic isolation determines the time that populations will breed
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Which of the following is not a way that the environment can influence traits?
the presence of toxins in the environment
through epigenetic factors
expression of the dominant trait
through variation in temperature
Answer:
The correct answer is - expression of the dominant trait
Explanation:
The ineraction of the genes such as dominant and recessive trait are incorporated in the genes and not influence by the environmental condition. These interaction are by the de noo mutations or due to the error in gene expression.
The environmental conditions like toxins cause alteration or mutation in the gene expressions. Temeprature or epigentic conditions are also the factor the can cause influence to traits.
Which base is found only in DNA?
O adenine
O guanine
O cytosine
othymine
Thymine is the base that is found only in DNA. Adenine, guanine, and cytosine are also present in both DNA and RNA, but thymine is exclusive to DNA. In RNA, uracil replaces thymine.
What are nucleotide bases?Nucleotide bases are the building blocks of DNA and RNA, the genetic material in all living organisms. There are four nucleotide bases in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, uracil (U) replaces thymine. These bases pair with each other to form the "rungs" of the DNA ladder, with A always pairing with T (or U in RNA) and C always pairing with G.
The sequence of nucleotide bases in DNA determines the genetic information carried by an organism. DNA replication, the process of copying DNA before cell division, relies on the complementary base pairing of nucleotide bases to ensure that each new strand of DNA has the same sequence as the original.
Mutations, or changes, in the sequence of nucleotide bases can occur naturally or as a result of external factors such as radiation or chemical exposure. These mutations can lead to genetic variations and may have consequences for the organism.
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