Answer: Invasive species can harm both the natural resources in an ecosystem as well as threaten human use of these resources. An invasive species can be introduced to a new area via the ballast water of oceangoing ships, intentional and accidental releases of aquaculture species, aquarium specimens or bait, and other means.
Why is the Sun considered “the boss” of the water cycle?
Answer:
The sun is the start of the water cycle
Explanation:
Water can not evaporate without the sun.
FREE BRAINLYEST if you can answer this question correctly. If you dig a 6 foot deep hole how deep is the hole
Answer: 6 feet
Explanation: It says it in the question
Answer:
its about 20 feet
Explanation:
All of the following are reasons for regulation of gene expression in eukaryotes EXCEPT -
Answer:
i thinnk its d
Explanation:
The main reason for regulation of gene expression in eukaryotes is cell repair and replacement.
What is gene regulation?Gene regulation is the process used to control the timing, location and amount in which genes are expressed. The process can be complicated and is carried out by a variety of mechanisms, including through regulatory proteins and chemical modification of DNA.
Regulation of gene expression, or gene regulation, includes a wide range of mechanisms that are used by cells to increase or decrease the production of specific gene products.
Hence, gene expression is controlled on two levels. First, transcription is controlled by limiting the amount of mRNA that is produced from a particular gene. The second level of control is through post-transcriptional events that regulate the translation of mRNA into proteins.
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Alion eats the meat of a buffalo. How do the molecules in the buffalo most likey act as building blocks for the
lion?
Answer:
ATP production
Explanation:
When the lion eats the buffalo, the eaten material is broken down to give ATP (Adenosine Triphosphate), which in turn helps the body in its metabolic processes like the synthesis of carbohydrates and proteins, which act as a building block for the lion.
Branches are what part of the plant?
Answer:
A branch is a secondary wood limb growing from the trunk of a plant. It helps transport materials from the tree trunk to the leaves. The trunk is a massive primary stem of a tree located between the roots and upper tree canopy.
Explanation:
I hope this helps<3
Answer:
A branch is a secondary wood limb growing from the trunk of a plant
Explanation:
It helps transport materials from the tree trunk to the leaves. The trunk is a massive primary stem of a tree located between the roots and upper tree canopy.
PLEASE HELP ASAP!!!!
How can the length of a DNA fragment the estimated in gel electrophoresis?
A. Larger fragments travel faster and father than smaller fragments.
B. Smaller fragments travel faster and farther than larger fragments.
C. Larger fragments are more negatively charged so they travel farther.
D. Smaller fragments or more negatively charged so they travel farther.
Answer:
B. Smaller fragments travel faster and farther than larger fragments.
Explanation: Shorter molecules move faster and migrate farther than longer ones because shorter molecules migrate more easily through the pores of the gel. This phenomenon is called sieving. [2] Proteins are separated by charge in agarose because the pores of the gel are too large to sieve proteins.
Mark’s discovery has Emily concerned. She has blue eyes, while both of her parents have brown eyes. Is it possible for Emily to be their biological daughter?
Scientists looking at the fossil record observe that in a certain kind of spiny fish, the fish evolves to have a greater number of spines over time. What is a reasonable conclusion from this observation?
A) All fish within the species always have the same number of spines,
B) This kind of spiny fish does not have many predators in its habitat,
C) The habitat of the fish must be going through a rapid change over time,
D) The greater number of spines provides some advantage to the fish,
(help please I gotta submit this soon)
Answer:
The answer is D. The Greater number of spines provides some advantages to the fish.
A reasonable conclusion from this observation is the greater number of spines provides some advantages to the fish. The correct option is D).
What are fossil records?Paleontologists, archaeologists, and geologists use the fossil record to put major events and species in the correct geologic epoch. It is based on the Law of Superposition, which stipulates that the bottom layers in undisturbed rock sequences are older than the top layers.
Fossils give vital evidence for evolution and plant and animal adaption to their habitats. Fossil data documents how creatures evolved and how this process can be represented by a 'tree of life,' demonstrating that all species are connected to one another.
Therefore, the correct option is D) The greater number of spines provides some advantage to the fish.
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PLS HURRY, I HAVE 1 MINUTE
Does the volume of the fluid near the bottom of the Lava lamp decrease, increase, or stay the same?
Answer:
Hotter
Explanation:
Upon turning on the lava lamp's light, the liquid at the bottom of the container, which is denser, will heat and expand. As the liquid expands, the volume of the liquid increases, and its density decreases.
60 POINTS!!!!!!!!!!!!!!!!!!
What is NOT an issue regarding DNA identification?
Select one:
a.
There is disagreement about whose DNA should be included in the database.
b.
It is not very reliable.
c.
Private information related to people's genetic makeup, which could get out and result in discrimination against them on that basis.
d.
Having databases of millions of DNA profiles can result in more incorrect coincidental matches with partial samples.
Answer:
its A
Explanation:
what causes the Coriolanus effect
stion: Will human activity impact the sustainability of a major ecosystem (Biosphere) on Earth?
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Chromosomes from a mother and a father combine during fertilization. What does
the offspring of two parents inherit through these chromosomes?
energy
gones
organelles
resources
If a frog cell with 2n = 26 undergoes mitosis one of the daughter cells would have _____ chromosomes and if that frog cell with 2n = 26 undergoes meiosis one daughter cell would have ____ chromosomes?
-------
A.) 13 – 13
B.) 26 – 26
C.) 26 – 13
Answer:
C.) 26 - 13
Explanation:
During mitosis, DNA is replicated during the S phase so that when the cell divides the daughter cells will have the same number of chromosomes that the parent cell had.
DNA replication also occurs during meiosis, but the cell divides twice, so the daughter cells will have half the number of chromosomes that the parent cell had. This is because the daughter cells are sex cells, which combine with another sex cell (either an egg or a sperm) to form one cell with a combined chromosome number.
A plant with small, silver-grey leaves that are oriented vertically is most likely to be found in which habitat?
Answer:
el sapo
Explanation:el sapo
el sapo
A plant with small, silver-grey leaves that are oriented vertically is most likely to be found in a warm dry habitat.
What is a Habitat?
A habitat is a dwelling place of a plant in which they live to survive. Such a place must have adequate supplies to enhance life forms such as:
lightwater food, andspace.The small plant with silver-grey leaves is known to be a cotton lavender.
They are perennial plants that live in warm, dry climates and sunshine to survive. They are commonly found in the Mediterranean areas.Learn more about habitat here:
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Septa are..
O external cross walls in hyphae
internal cross walls found in hyphae
O always found in hyphae
O a fungal reproductive structure
Answer:
septa are thin walls or partitions between the internal chambers.
Explanation: I wasn't really good at septas but i think this is correct
 what is abbreviation for heterozygous?
Answer:
The answer is Aa
Explanation:
I'm assuming that you're referring to the lettering of genes. If that's the case, the answer is Aa. A heterozygous is Aa. Hope this is what you were looking for!
Answer:
The correct answer is Het.
Which human body system performs a function similar to what the mitochondria perform for the cell?
Answer:
the digestive system
Explanation:
because like mitochondria it helps other organelles like lysomes are responsible for digesting and recycling toxic substances and waste
Can someone help me solve this???pls
When a tall plant is crossed with a short plant, some of the offspring are short. What are the genotypes of the parents and the offspring? What is the phenotypic result in the offspring?
Answer:
Tall plant with genotypes Pp.
Explanation:
Make the question into a box represented what you are crossing and and the parents genotypes look like.
PP - Tall Plant
Pp - Tall Plant
pp - Short Plant
X P P
p Pp Pp
p Pp Pp
All of the offspring will be a Tall Plant with the genotype Pp.
Tall plants has genotypes [tex]\boldsymbol{Pp}[/tex].
Define genotypes.An individual's genotype is its entire set of chromosomes material. The alleles or variations that a person holds in a given gene or genetic region are referred to as genotype.
Some of the offspring of a tall plant crossing with a short crop are short, tall plants with genotypes [tex]\boldsymbol{Pp}[/tex]
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A student creates a list of characteristics for a human cell and a virus. 1. smaller than an organelle 2. absence of metabolic activity 3. grows by dividing 4. presence of enzymes in the cytoplasm 5. surrounded by a protein coat Which characteristics are associated only with a virus? O 1, 2, and 3 O 1,2, and 5 O 2,3, and 4 O 2,3, and 5
Answer:
1, 2, and 5
Explanation:
Viruses are pathogenic microorganisms that lack the ability to thrive and reproduce outside of a living host cell. Their structure is simple - they consist of a nucleic acid molecule surrounded by a protein coating and sometimes an outer envelope. They are too small to be seen by a light microscope.
As they are way smaller than living cells, viruses are smaller than organelles as well. They don't have their own metabolism. Their reproduction is not based on division. They don't have any organelles, including the cytoplasm. They are surrounded by a protein coat called the capsid.
Based on this information, we can see that the correct statements are statements 1, 2, and 5.
What is the difference between Active and Passive Transport?
Answer:
Active transport moves molecules and ions from lower concentration to higher concentration, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.
Explanation:
Active transport moves molecules and ions from lower concentration to higher concentration with the help of energy in the form of ATP. On the other hand, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.
In the Northern Hemisphere, the summer solstice occurs on ____.
A. June 20 or 21
B. March 20 or 21
Answer:
A. June 20 or 21
Explanation:
In the Northern Hemisphere the summer solstice occurs on June 20 or 21 and the winter solstice on December 21 or 22. The situation is exactly... At the summer solstice, the Sun travels the longest path through the sky, and that day therefore has the most daylight.
Which biological scenario(s) best describes phenotypic plasticity for a trait?
I. Each person has a specific blood type.
II. Red blood cell counts differ in higher altitudes.
III. One identical twin is taller than the other.
A)I only
B)II only
C)II and III only
D)I, II, and III
Answer:
C) II and III only
Explanation:
Option 1 is not an example of phenotypic plasticity because each person is born with their own blood type and this doesn't change based on their environment and behavior.
Option 2 is an example of phenotypic plasticity because a person's red blood cell counts can increase based on their environment, i.e. moving to Denver, CO from Death Valley, CA. The higher elevation and decreased oxygen causes your body to produce more red blood cells.
Option 3 is an example of phenotypic plasticity because one twin can be taller than another because of differing behaviors, environments, etc.
At which temperature is water a solid?
A. 30 °F
B. 75 °F
C. 127 °F
D. 214 °F
Which of the alleles for the OCA2 gene is dominant? Which is recessive?
Answer:
Dominant is the regular colored skin or melanin, and the recessive is albinism
For the OCA2 gene, dominant allele is the regular colored skin or melanin, and the recessive is albinism.
What are the functions of OCA2 genes?The OCA2 gene provides instructions for making a protein called the P protein. This protein is located in melanocytes, which are specialized cells that produce a pigment called melanin.
Several common variations in the OCA2 gene reduce the amount of functional P protein that is produced. Less P protein means that less melanin is present in the iris, leading to blue eyes instead of brown in people with a polymorphism in this gene.
OCA2 is the most common type of albinism in African Black OCA patients. The overall prevalence of OCA2 is estimated to be 1:36,000 in the USA, but is about 1:10,000 among African Americans.
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do electrons live in the atom
Answer:
yes
Explanation:
electrons life in the nucleus which is at the center of the atom
Answer:
Protons and neutrons are heavier than electrons and reside in the nucleus at the center of the atom. Electrons are extremely lightweight and exist in a cloud orbiting the nucleus.
hope this helps!!:)
Explanation:
What living materials are used in preclinical testing?
Answer:
Preclinical studies refer to the testing of a drug, procedure or other medical treatment in animals before trials may be carried out in humans.
Which of these molecules is not a macromolecule made up of many smaller
organic molecules?
O A. Complex carbohydrate
B. Nucleic acid
O C. Protein
D. Water
SUBMIT
( i don’t think B. and C. are it) (might be wrong but have a feeling.
Answer:
D.
hope this helps!!:)
Explanation:
Answer:
D. Water
Explanation:
Water is not a macromolecule, it is a micromolecule.
The diagram shows three large carbohydrate polysaccharides.
Cellulose
Starch
Glycogen
Highly branched (glycogen)
Linear (cellulose)
Branched (starch)
What is the main difference between starch and glycogen?
O A. Humans can chew starch but cannot chew glycogen
B. Humans make glycogen but cannot make starch, which is only found in plants.
O C. Humans dissolve glycogen in blood plasma but cannot dissolve cellulose.
D. Human muscle cells can absorb cellulose but cannot absorb glycogen and starch.
Answer:
B.) Humans make glycogen but cannot make starch, which is only found in plants
Explanation:
Humans store carbohydrates as glycogen, whereas plants store extra carbohydrates as starch.
