Answer:
An ecosystem consists of a community of organisms together with their physical environment. In ecosystems, both matter and energy are conserved. Energy flows through the system usually from light to heat while matter is recycled.
Explanation:
In silkworms,yellow cocoon (B) is dominat over white cocoon(b). If the mom is BB and the dad is bb, what are the chances they have offspring with yellow cocoons?
Answer:
100 %
Explanation:
Dominance is a genetic phenomenon where a gene variant or allele masks the effects of another allele (of the same gene) in heterozygous individuals. This last gene variant is referred to as the recessive allele. In this case, the silkworm mother can produce only one type of gamete carrying the dominant gene (B) form, while the silkworm father can produce only one type of gamete carrying the recessive gene (b) form. In consequence, from this cross, all offspring (100 %) will be heterozygous (Bb) and therefore they will express the dominant trait (i.e., yellow cocoon).
I need help ................
Answer:
thats easy bro ;0
Explanation:
In the laboratory, yeast cells are usually grown at a temperature of 25oC. A scientist wanted to determine if yeast cells would reproduce faster or slower when the temperature was dropped to 15oC. The same number of yeast cells were placed in the same medium with the same amount of nutrients. One sample was kept at 25oC and the other one was kept at 15oC. The number of yeast cells was counted every hour for an eighteen hour period.
Answer:
This question is incomplete, however, it is asking to identify the following variables:
Independent variable: Temperature
Dependent variable: Number of yeast cells
Constants: same amount of nutrients, same number of yeast cells, same medium
Explanation:
- Independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable effect. In this experiment, the TEMPERATURE at which the yeast are kept is the independent variable.
- Dependent variable is the variable that responds to the changes made to the independent variable. It is the variable that is measured by the experimenter in the experiment. In this case, The NUMBER OF YEAST CELLS was counted, hence, it is the dependent variable.
- Constants are variables that are kept unchanged or same for all groups by the experimenter in order not to influence the experiment's outcome. In this case, the CONSTANTS are: same amount of nutrients, same number of yeast cells, same medium etc.
FILL IN THE BLANK!!!
genotype is the____pair of alleles (TT)____of an organism. And phenotype is the____apperence__of an organism
Answer:
THIS IS IT
Explanation:
The genetic makeup of an organism (ex: TT). Phenotype, The physical ... from each parent). This pair of alleles is called a genotype and determines the organism's appearance, or phenotype. ... A Punnett square can be used to predict genotype and phenotypes of offspring from genetic crosses
Does anybody know how I can get these answers ?
SARS-CoV-2 is a respiratory virus. What makes a respiratory virus more difficult to contain than a pathogen that is spread through contaminated food, for example?
Answer:
a respiratory virus is usually air borne. while contaminated food can only harm you if ingested. with SARS, if you breath in contaminated air, its a lot easier to get it.
Explanation:
In an experiment, there are two groups. Which group is not changed in any way?
Answer:
the control
Explanation:
Which organelle is generally larger in plant cells than in animal cells?
A mitochondrion
B. nucleus
C. ribosome
D. vacuole
Answer: D. VACUOLE
Explanation:
Answer:
D
Explanation:
In a plant species, the allele for dark green leaves (D) is dominant over the allele for light green leaves (d). A plant with Genotype (Dd) is crossed with a plant with genotype (did). What percentage of the offspring are expected to be hybrid for the leaf color trait. A 0% B 25%. C.50%. D 75%
The percentage of the offspring that is expected to be hybrid for the leaf color trait is 50%. The correct option is C.
What are alleles?The trait is caused by a pair of two alleles on the chromosome, and there are two possible outcomes. The dominant allele, which is typically written in capital letters and will control the organism's phenotype even in the presence of the other allele, is the one that has the ability to silence the other allele.
It is used in biology to refer to inherited traits that do not manifest in the phenotype of the individual who possesses them but may do so in their offspring.
Recessive alleles, which are only expressed when they are homozygous, are this other type of allele. Both heterozygous and homozygous genotypes exhibit the dominant allele.
Dd is crossed by dd.
100 / 2 = 50%.
Therefore, the correct option is C.
To learn more about alleles, refer to the link:
https://brainly.com/question/7602134
#SPJ6
PLEASE HURRY AND ANSWER ILL GIVE BRAINLIEST JUST PLEASE HELPPPP
Every___ years the Sun goes through a period during which it emits
more energy than normal, and produces sun spots and solar flares. *
O 11 years
0 20 years
O 7 years
O 1 year
O Other:
Answer:
11 years
Explanation:
thats the time it takes for a full solar cycle
50 points HELP!!
What would be the correct complimentary DNA strand given the following DNA strand.
DNA: ATACGAAAT (Type as one word - no spaces)
Using the same strand of DNA, what would be the correct sequence for an RNA strand? (Type as one word - no spaces)
Answer:
TATGCTTTA for question 1.
For RNA following the original strand it would be UAUGCUUUA
Explanation:
Replace A with T(vice versa), and C with G(vice versa)
But for the RNA, A bonds with U instead of T. So it would be the same as the complimentary DNA, just with U instead of T
Replicate the following DNA sequence: TCT *
Replicate the following DNA sequence: GGG *
Replicate the following DNA sequence: GGA*
Voir
Hint:
A goes with T
T goes with A
C with G
G with C
the diagram shows the process in which pre-mRNA is changed into mrna; select and place the two appropriate labels for the diagram
Answer:
it has to be. either remaining exon are spliced together, intron are removed, or remaining intron are spliced together.
Explanation:
i got introns and extrinsic are spliced and exons are removed and got them wrong
Answer:
In the box next to the First mRNa (First Box), it is that the Introns are removed.
In the box next to the Final mRNa (Bottom Box), it is the remaining exons are spliced together
Hope This Helped.
-Greg
As mountains are worn down, the eroded metamorphism is deposited
on adjacent landscapes
A: True
B: False
Answer:
I believe it is true
Explanation:
but im not 100% sure
PLEAe help mE ASAP ASAP
Genetics is the scientific study of heredity? True False
Answer:
true
Explanation:
genetics is the study of heredity in organisms and heredity is the process of passing traits from parents to offsprings
Answer:
Scientific Study
Explanation:
Genetics is the study how heritable traits are transmitted from parents to offspring
What is the role of microfilaments in cell division?
Answer:
to help divide the cell during mitosis/ aid the process of cytokinesis
Explanation:
Answer:
microfilaments are made up of proteins including actin and myosin
these proteins help "pinch off" the two daughter cells during cell division during the final stages, a microfilament ring forms and contracts to separate the new cells during cytokinesis.
hope this helped :D
From memory, list the 5 characteristics of life.
Answer:
Cells.
Obtain and Use Energy.
Reproduction.
Respond to the Environment.
Adapt/Evolve.
Explanation:
(Giving brainliest!!)
Explain why the sun appears to be the brightest star in the sky. Relate your explanation with an example, such as streetlights
Answer:
when you look a streetlight from far it will be some how not bright. the other stars are far from planet earth . but the sun is near
Explanation:
NS
What are magnetic field lines?
A. Lines that show the shape of a
magnetic field
B. Lines that show the path of electrons
C. Lines that show aligned atoms
Answer:
A
Explanation:
Magnetic field lines are a visual tool used to represent magnetic fields. They describe the direction of the magnetic force on a north monopole at any given position. The density of the lines indicates the magnitude of the field.
. The small fish are not affected by the pesticide, but death occurs in the bird, at the top of the food chain. Why do you think that happens?
Which set of atoms can be found in ALL carbon-based molecule?
Answer:
All organisms are made of four types of carbon-based molecules: carbohydrates, lipids, proteins, and nucleic acids. These molecules have different structures and functions, but all are formed around carbon chains and rings.
Carbon-based molecules have three fundamental structures—straight chains, branched chains, and rings.
summarize the future use of dna technology here in 20 words or more
Answer:
DNA testing has gone mainstream. The cost of DNA sequencing has reduced faster than Moore's Law. With an estimated cost of $100 in the foreseeable future, DNA sequencing becomes more accessible and opens up new use cases, such as wider adoption of population sequencing
Explanation:
What are some benefits to evolutionary adaptations?
Answer:
1.A new species
2.Adding to world population
3.More to learn
Explanation:
Im not sure if anyone knows this or not.
Can someone please help me with 1 and 2! If u r correct ill mark u was the best answer
I'm pretty sure the answer to 1 is A, but I know for a fact that soil contains microorganisms and microbes.
The answer to question 2 is D (Porosity)
What needs to happen for a species to form
Answer:
New species form when individuals from diverging populations no longer recognize one another as potential mates, or opportunities for mating become limited by differences in habitat use or reproductive schedules.
Explanation:
A Labradoodle is created by scientist to be hypoallergenic but still look like a labrador
Answer:
whoa there holy cow
Explanation:
SJJKAOKPMADJO*imnotanalien*NNKSNK
Answer: mine has curly hair that looks like a poodle but face of a Labrador
Explanation:
Which of the following statements best describes the state of DNA inside of a prokaryotic cell?
a
46 X-shaped chromosomes inside the cytoplasm
b
46 X-shaped chromosomes inside the nucleus
c
a single circular chromosome in the cytoplasm
d
a single circular chromosome in the nucleus
Answer:
C.
Explanation:
It's a single strand of circular DNA found in the central area of the cell, which is not surrounded by a nuclear membrane.
1 point
This picture shows a cross-section of a blood vessel. The diameter of the
lumen in Figure 10 is 25.0 mm. What is the actual diameter of the lumen of
this blood vessel?
lumen
magnification X8
3.1 x 10-2m
3.1 x 10-3 m
O 2.0 x 10-2 m
2.0 x 10-3 m
Answer:
B. 3.12 x [tex]10^{-3}[/tex] m
Explanation:
From the given picture, it can be deduced that;
the diameter of the image of lumen = 25.0 mm
= 25.0 ÷ 1000
= 0.025 m
And,
magnification = [tex]\frac{diameter of the image of lumen}{actual diameter of lumen}[/tex]
But magnification = 8,and diameter of the image of lumen = 0.025 m.
So that;
8 = [tex]\frac{0.025}{actual diameter of lumen}[/tex]
⇒ actual diameter of lumen = [tex]\frac{0.025}{8}[/tex]
= 0.003125
Actual diameter of lumen of the blood vessel is 3.12 x [tex]10^{-3}[/tex] m.
PLEASE HELP ME OUT!!! IVE BEEN STUCK ON THIS QUESTION FOR AN HOUR.
Answer:
2, 1, 4, 6, 7, 6, 8, 3
Explanation:
