2. If the perimeter of a triangle is 31 ft and two of the side lengths are 15 ft and 10 ft, what is the length of the third side?
Answer: 6ft
Explanation:
Perimeter is just adding the side lengths together so...
31-15-10=x
6=x
so the answer is 6 ft
Assess It! #4 Which is the correct combination for the photosynthesis equation? (not balanced) A. H2O + -> CO2 + O2
B. O2+H2O -> sugar +energy
C. CO2 + H2O +☺ -> Sugar+ energy
D. ☺ + H2O -> H2O+ sugar
Tectonic Plate Theory states that the continents on Earth's crust are slowly/quickly moving because of gravity/water/pressure/convection currents
caused by heat from the Earth's core.
Answer:
True
Explanation:
Homologous structures are defined as anatomical structures originating from the
same structure in ancestral form. For instance, a bird's wing and the front flippers of
a seal are examples of homologous structures. Which of the following does the
presence of homologous structures in vertebrates suggest?
Explanation:
An example of homologous structures in vertebrates is
where the wings of bats, front flippers of whales, and forelegs of four-legged vertebrates like dogs and crocodiles are all derived from the same ancestral tetrapod structure.
The process by which a cell takes in a large particle is called
A)endocytosis.
B)diffusion.
C)active transport.
D)exocytosis.
Answer:
Endocytosis
Explanation:
the cell needs to use a vacuole to engulf the particle and take it in
Which of the following does not cycle quickly!
A) Wood
B) Oil
C) Water
D) Carbon
Answer:
I believe it is be
Explanation:
Depending on the type oil, it can be natural and non renewable
My answer choice is B and my second option is D i am very indeed sorry if I'm wrong.
Materials are able to move across a cell membrane through one of two methods: active transport or passive transport. What is the difference between the two?
A
Active transport requires the cell to form vesicles, while passive transport requires the use of membrane pumps.
B
Active transport requires the cell to expend energy, while passive transport does not.
C
Active transport is the only form of transport that requires the use of protein carriers.
D
Passive transport is the only form of transport that requires the use of protein carriers.
Answer:
(B) Active transport requires the cell to expend energy, while passive transport does not
Answer:
b
Explanation:
Why does the skeleton stop growing in length?
a
Because the cartilage in the growth plate has been
replaced by bone.
b
Because there is not enough calcium and other
nutrients in the body.
Because the growth plates stop working
d Because the bones reach their maximum length
Answer:
Bones increase in length because of growth plates in the bones called epiphyses. As puberty progresses, the growth plates mature, and at the end of puberty they fuse and stop growing. ... After the growth plates fuse, there is no more increase in height, and we all then shrink gradually as we get older.
A ___(J)_____ is a group of individuals of the same species that mate and produce offspring. In each generation, new genotypes occur that express themselves as specific individual ____(K)___. Any factor that affects the ____(L)___ of a population can change the frequency of ___(M)___, resulting in evolution over time. Through the processes of variation and ___(N)___, new species can arise. A ___(P)___ is a population of physically similar, interbreeding organisms that do not interbred with other such groups.
Answer:
(J) population; (K) phenotypes; (L) gene pool; (M) alleles; (N) natural selection; (P) species
Explanation:
A population is a group of organisms living in a particular geographical area that is capable of interbreeding, while a species is a group of populations that are capable of interbreeding and producing fertile progeny. In a population, genetic variation can enter from one of these sources: 1-recombination (i.e., the exchange of DNA between homologous chromosomes during meiosis), 2-mutations (i.e., genetic alterations resulting from DNA replication), 3-migration of individuals between populations, or 4-lateral or horizontal gene transfer (i.e., the acquisition of genetic material between individuals without direct vertical inheritance, it is extremely rare in higher organisms). Alleles are gene variants which are may be created, for example, through mutation, while the gene pool refers to the total genetic diversity (i.e., alleles) that exists within a population. Finally, natural selection refers to the evolutionary process of differential reproduction and survival through which populations adapt and change.
Los elefantes marinos del norte tienen poca variabilidad genética, probablemente, por un proceso que le hicieron pasar los hombres en la década de 1890. La caza hizo disminuir el censo poblacional hasta tan sólo 20 individuos a finales del siglo XIX. Desde entonces, su población ha «rebotado» hasta más de 30 000, pero sus genes todavía llevan las señales de sus aquellas generaciones su variabilidad genética es mucho menor que la de una población de elefantes marinos del sur que no sufrió una caza tan intensa. Este proceso puede denominarse como:
Seleccione una:
Cuello de botella
Especiación
Selección natural
Efecto fundadorLos elefantes marinos del norte tienen poca variabilidad genética, probablemente, por un proceso que le hicieron pasar los hombres en la década de 1890. La caza hizo disminuir el censo poblacional hasta tan sólo 20 individuos a finales del siglo XIX. Desde entonces, su población ha «rebotado» hasta más de 30 000, pero sus genes todavía llevan las señales de sus aquellas generaciones su variabilidad genética es mucho menor que la de una población de elefantes marinos del sur que no sufrió una caza tan intensa. Este proceso puede denominarse como:
Seleccione una:
Cuello de botella
Especiación
Selección natural
Efecto fundador
Answer:
elefantes marinos mmmmmmmmmm
The following RNA strand was produced: 5 AUG GCG UUU 3 Which of the following DNA strands could have been the template for this RNA? Choose 1 answer: A 3 TAC CGC AAA 5' 3' CGT TAT GGG 5' 3' AUG GCG UUU 5' 3' UAC CGC AAA 5
Answer:
A
Explanation:
Each nucleotide is appropriately paired according to the A-U/T-A and C-G pairing rules, so these are complementary strands.
The DNA strand that could have been the template for RNA 5' AUG GCG UUU 3' is 3' TAC CGC AAA 5'.Thus, the correct option is A.
What is a Template strand?A template strand may be defined as the DNA sequence that can duplicate itself during the process of mRNA synthesis. During this process, the cell utilizes a non-coding/antisense DNA sequence as a template to construct mRNA.
The production of the mRNA strand is done with the help of complementary base pairing with that of the template strand. In this process, A is bound to T and vice versa, while C is bound to G and vice versa.
In mRNA, the Thymine (T) is replaced by Uracil (U). According to Chargaff's rule, the amount of ADENINE is equal to THYMINE, while the amount of GUANINE is equal to CYTOSINE.
Therefore, it is well described above.
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Which of the following statements about homeostasis is NOT true?
A. Maintaining homeostasis requires that all of the body systems works together
B. Long periods of stress can disrupt homeostasis
C. Body temperature is a condition of homeostasis
D. Maintaining homeostasis is something that needs to be learned
Answer:
D. Maintaining homeostasis is something that needs to be learned
The student is studying the movement of substances across the cell membrane. She understands that some substances combine with special transport proteins to be carried across the cell membrane. The substances can move only from an area of higher concentration to one of lower concentration. This process is known as:
Answer:
Facilitated diffusion
Explanation:
Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.
Facilitated diffusion is a passive transport process because they only depend on electrochemical gradients, so they do not need any energy to occur.
8. Which national capitals are located within the rainforest area?
Rainforests are the area which covers mostly evergreen forests with tall trees. It is located in capitals like Manaus, capital of Amazonas estado, northwestern Brazil.
What are rainforests?Rainforests are the areas of tall, evergreen forests. It is characterized by closed tree canopy, moisture dependent vegetation, epiphytes, lianas, etc.
Tropical rainforests are located generally in Central and South America, western India, Southeast Asia, etc.
The national capitals that have this type of forest is Manaus, capital of Amazonas estado, northwestern Brazil.
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Which statement explains why the structure of sickle cells differs from normal red blood cells?
a. The gene mutation affected protein synthesis.
b. The gene mutation prohibited DNA replication.
c. The gene mutation inhibited the cell's ability to produce tRNA.
d. The gene mutation affected the cell's ability to produce ATP.
Answer:
A. the gene mutation affected protein synthesis
Explanation:
Basically, sickle cell results due to point mutation (change in one nucleotide) in DNA, which in turns affects the mRNA produced and finally the protein made from that mRNA is affected. I have listed a helpful image below which shows that the mutation actually results in formation of an undesired protein which causes sickle cell to occur.
Define 4 types of teeth(incisors,canines, premolars and molars)
Who answered correct will get a the brainliest answer and a free follow.Have a nice day
Species will compete until the ________ species wins.
A.) Stronger
B.) Smaller
C.) Bigger
D.) Weaker
Answer:
B.smaller
Explanation:
yeah maybe because smaller fastest:)
Answer:
A
Explanation:
The weakest obviously doesn't. Small or big dosn't matter. So it must be A.
: Is a human leg prosthetic an example of science or technology? Explain your answer.
QUICK!!!! ANSWER PLEASE WITH EXPLANATION TOO!!!
Answer:
This would be an example of technology.
Explanation:
Artificial limbs, or prostheses, are used to replace a missing body part which may have been lost due to trauma, disease or congenital defect. The type of prosthesis a person can use is dependent on the individual, including the cause of amputation or limb loss, and the location of the missing extremity. These come in all shapes and sizes, for whatever you need.
Have a nice day!
Answer:
A technology, since the actual prosthesis is a human creation that solves a problem. Science is nothing physical. It is the combination of laws and theories that explain our universe and helps us make decisions. We don't really invent science, we describe it.
Science is ideas. Technology is human creations.
Science generally underpins all new technology.
In your human leg prosthesis example science is crucial in choosing (or developing) suitable materials for construction of the prosthesis. The material must be relatively stable, not break down into toxic substances and have good durability. Knowledge of human Biology is also important if you want to start replacing human body parts.
Basically chemistry and biology are important in the prosthesis development. There is also probably physics regarding tensile strength requirements.
The actual end result of the human prosthesis is a technology which solves a problem of degraded human parts.
So to reiterate, it is a technology.
Explanation:
7. Explain at least two ways in which wind pollinated plants' structures are
adapted for wind pollination.
Answer:
Wind pollinated have light and small pollen grains to be easily carried away. They also lack petals or have small ones, so that the pollen can be exposed and easily swept by wind.
which statement about the cells of organisms is accurate?
A. plants are unicellular organisms and carry out functions of life.
B. All organisms are multicellular and carry out similar functions of life.
C. The single cell of a unicellular organism carries out all functions of life.
D. The single cell of a unicellular organism can have specialized functions.
Answer: HI I think i can help You!
B is the correct answer
Explanation:
C is the correct answer!
12. As a result of photosynthesis, what is produced *
O oxygen and sugar
light energy and sugar
O carbon dioxide and water
carbon dioxide and oxygen
Answer:
As a result of photosynthesis oxygen and sugar
Please choose the answer that best completes the blanks of this sentence in the correct order. The ______ plate method involves spreading an inoculum onto the surface of a plate in a pattern that results in isolated colonies in some areas of the plate after incubation, whereas the ______ plate method involves diluting an inoculum into several melted agar tubes and then adding their contents into plates for solidification and incubation.
Answer:
streak, pour
Explanation:
The streak method is the most popular technique used to isolate specific bacteria from a sample containing different microorganisms. In this technique, a sterile loop is employed to obtain an uncontaminated microbial culture. Colony picking refers to the process where colonies of pure bacteria are selected in order to duplicate them by transferring them into new agar plates. Moreover, the pour plate method is the most popular technique employed to count the number of colony-forming bacteria (i.e., bacteria/ml) in a specimen. The pour plate method consists of dropping the sample on a sterile plate and subsequently molten-cooled agar is then poured into the plate and mixed well with the inoculum.
Answer:
streak, pour
Explanation:
The streak plate method involves spreading an inoculum onto the surface of a plate in a pattern that results in isolated colonies in some areas of the plate after incubation, whereas the pour plate method involves diluting an inoculum into several melted agar tubes and then adding their contents into plates for solidification and incubation.
What is the best way to increase predators of pests?
A. increase habitat
B. increase pest populations
C. decrease pollution
D. decrease variety of crops
The answer is b. the more pests the more predators
The body can be invaded by (mutagens / bryophytes / tracheophytes / pathogens), which are harmful microorganisms that cause (infectious / chronic / malignant / proactive) diseases. The body then initiates a(n) (homeostasis / feedback / inflammatory / inhibition) response, which may involve redness, swelling, and fever.
Answer:
1. Pathogens
2. Infectious
3. Inflammatory
Explanation:
A pathogens is any disease-causing microorganism or agent. Pathogens such as bacteria, virus etc. invade the body of a living organisms and cause an abnormal state of health (disease) in such organism. The diseases caused by pathogens are usually infectious, meaning that it can spread from one individual to another.
This attack by pathogens triggers an inflammatory response by the body of the host. This inflammatory response is visibly characterized by redness, swelling, and fever etc.
When water reaches the ground, most of the water ends up where?
Oceans
on grassland
rivers or streams
Answer:
id say rivers or sreams, i dont really know, i guess it really depends where it rains. if it rains over the ocean then all of it is going there
Explanation:
beeg brain power...or i could be wrong and have smol brain power
Which is NOT an example of evolution? A. The development of antibiotic-resistant bacteria B. Flightless birds living on islands without predators C. Annual changes in the flu virus due to mutations D. A dog learning how to open the cabinet where its food is kept E. The 2- to 3-year effectiveness of most commercial pesticides in killing insects
What form of matter is made from only one type of atom?
Answer:
elements
Explanation:
When the particles are equally spaced apart they have reached:
A. Hypertonicity
B. Dynamic Equilibrium
C. Homeostasis
D. Osmolarity
Answer:
B. Dynamic Equilibrium
Explanation:
The result of diffusion is a gradual mixing of material such that the distribution of molecules is uniform. Since the molecules are still in motion, but an equilibrium has been established, the end result of molecular diffusion is called a "dynamic equilibrium".
Answer:
B. Dynamic Equilibrium
Explanation:
When the particles are equally spaced apart they have reached Dynamic Equilibrium.
what is the main goal of cloning.
A)To add medicines to the foods that people eat
B)To make living things that have identical DNA
C)To spread genes from transgenic plants to wild plants
D) To improve the process of asexual reproduction
PLEASE HELP WILL GIVE BRAINLIEST
After a lake dried up during a severe drought a section of undisturbed rock layers was exposed. The layers are represented below.
Fossils in Undisturbed
Rock Layers
eo
Source: https://www.superlachertools.net
This sequence of rock layers best illustrates the concept that
o A. it is important to preserve the diversity of species and habitats
OB new inheritable characteristics can result from the recombining
of genes
oc the living and nonliving environment both change over time
D. living organisms have the capacity to produce populations of
unlimited size
Answer:C
Explanation:
After a lake dried up during a severe drought a section of undisturbed rock layers was exposed represents that the living and nonliving environment both change over time. So the correct option is C.
What is fossil fuels?Fossil fuels is refers to as which is made from decomposing plants and animals. As the time changes, the living and non-living matter decomposes and deposited in deep layers of soil and converted into fossils after a million ages.
These fuels are present in the earth's crust and comprises carbon and hydrogen, which can be burned for energy. The Coal, oil, and natural gas are examples of fossil fuels.
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