Answer:
8.4
Explanation:
200/23.75
Which structure in plants allowed the first land plants to survive out of water?
A. cuticle
B. epidermis
C. guard cell
D. spongy mesophyll
Answer:
A
Explanation:
The structure of plants that allowed the first land plants to survive out of water is known as the cuticle. Thus, the correct option for this question is A.
What were the first plants to live on land?The first plants that were tends to live on land are the Non-vascular plants, which include mosses and liverworts, which were the first-ever land plants. They do not have much of an internal support system but have slightly simpler material for the same tasks.
Early in their history, land plants also evolved a cuticle. The cuticle is the structure that involves a waxy layer on the outer surface of the aerial parts of a plant that helps to prevent water loss. Sometimes cuticle with details of epidermal cell structure is preserved in fossil plants.
Guard cells play an important role in the opening and closing of the stomata. While epidermis is the outer cell which prevent the whole plant form injury.
Therefore, the structure of plants that allowed the first land plants to survive out of water is known as the cuticle. Thus, the correct option for this question is A.
To learn more about Cuticle, refer to the link:
https://brainly.com/question/16419719
#SPJ6
where is most of the mass of the atmosphere contained?
stratosphere
mesosphere
thermosphere
or troposphere
Answer:
troposphere
Explanation:
Answer: Troposphere
Explanation:
The majority of the mass of the entire atmosphere is contained in the troposphere—between approximately 75 and 80 percent.
Chymotrypsin is a digestive enzyme that breaks down proteins in the small intestine. A student runs a computer simulation of chymotrypsin
enzyme activity at various pH levels and creates the graph.
Enzyme Activity
10
12
8
pH
According to the graph, at what pH is chymotrypsin the most effective?
04
6
8
O 10
Answer:
C.8
Explanation:
What is the process by which populations of organisms change over time?
Answer:Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes
Explanation:
the largest mass of living material on earth comes from the largest mass of living material on earth comes from microorganisms. plants and animals together. plants. animals
The correct option is A: Microorganisms
The largest mass of living material on earth comes from microorganisms.
Microorganisms are tiny microscopic organisms that can not be seen through a bare eye.
In order to see them, we need a high-resolution microscope.
Fungi, bacteria, protozoa, and algae are microscopic organisms that are found both in marine and freshwater.
All these organisms are single-celled and occur in the form of colonies.
The first microbes are expected to be present on planet 'earth' since early times and were discovered back in the 6th century in India.
If you need to learn more about microorganisms click here:
https://brainly.com/question/13705286
#SPJ4
A town is considering new sources of electricity. Which of the following sources of electricity would be the MOST environmentally safe choice?
A
hydroelectric dam
B
solar power station
C
coal-fired power plant
D
natural gas power plant
Group of answer choices
A
Answer:
B
Explanation:
Answer:
B
Explanation:
How does gravity relate to a streams ability to erode and deposit materials
Which base sequence is the complementary DNA for GCATAC?
A. CATACG
B.CGTATG
C. GCATAC
D.GTATGC
What can stop climate change and restore the balance of CO2?
Answer:
Power your home with renewable energy. AND . Reducing the use of coal, oil and natural gas is clearly important, but it's not the only way to bring the carbon cycle into better balance
Explanation:
Another option is to speed up the rate at which CO2 is removed from the atmosphere and then sequester the resulting carbon, thereby balancing out the CO2 from fuel combustion.
Four random genetic matches then formed the following diploid offspring. Using the text box or pen tools, label the alleles on each offspring.
Crossing-over events occur during the prophase 1. After anaphase 2, telophase 2, and citokynesis, 4 gametes are formed. Each gamete has different genetic information. Alleles are labeled in the attached file.
--------------------
Since I do not have the parentals genotype, I will consider two traits, each coded by a single diallelic gene.
Gene 1:
A is the dominant allelea is the recessive alleleLocated in the superior arm of the chromosomeGene 2:
B is the dominant alleleb is the recessive alleleLocated in the inferior arm of the chromosomeI will assume that both parents are heter0zyg0us for both traits, so their genotypes are AaBb.
During gamete formation, the pairs of h0m0logous chromosomes separate after crossing over. Then, sister chromatids also separate. The result is the formation of four gametes.
Each gamete has different information from the combination of h0m0logous chromosomes belonging to the father and to the mother.
Mother
During the prophase of meiosis 1, the mother's homologous chromosomes express two crossing-over events. One of them in the superior arm and the other one in the inferior arm.
The segments interchange between chromosomes involves Gene 1 and Gene 2.
During anaphase 2, sister chromatids separate, and after telophase and cytokinesis, four haploid gametes are formed carrying the following chromosomes,
AB → Parentalab → RecombinantAB → Recombinantab → ParentalFather
During the prophase of meiosis 1, the father's homologous chromosomes express one crossing-over event in the inferior arm.
The segments interchange between chromosomes involves Gene 2.
During anaphase 2, sister chromatids separate, and after telophase and cytokinesis, four haploid gametes are formed carrying the following chromosomes,
AB → ParentalAb → RecombinantaB → Recombinantab → ParentalGametes' destiny is to randomly merge in the process of fecundation, during which a new diploid cell called zygote emerges through fertilization.
The zygote is a complete cell that suffers successive mitosis to form the new organism.
In the exposed example,
Offspring 1 → Parental gamete ab from the mother merged recombinant
gamete aB from the father → genotype aaBb
Offspring 2 → Parental gamete AB from the mother merged recombinant
gamete aB from the father → genotype AaBB
Offspring 3 → Recombinant gamete ab from the mother merged
recombinant gamete Ab from the father → genotype Aabb
Offspring 4 → Parental gamete ab from the mother merged recombinant
gamete ab from the father → genotype aabb
For a better understanding, you can see the image in the attached files in which alleles are labeled.
------
You can learn more about crossing-over at
https://brainly.com/question/394891
https://brainly.com/question/12911831
WILL GIVE BRAINLIEST!!!!!!
Which characteristic is shared by both prokaryotes and eukaryotes?
need oxygen gas to breathe
make their own food
contain genetic material
have organ systems
Answer:
Contain gentic material
both have DNA
Explanation:
Prokaroytes dont have organ systems
and the rest are incorrect
How accurate was the prediction about the contents of the story the tell-tale heart?
Poe's "The Tell-Tale Heart" narrator serves as an illustration of an unreliable witness. The narrator's unreliability is based on his attempts to mislead the reader, to go off topic, and to cover up his omission of important details.
A person who thinks they are crazy or insane is said to have a heart with a tall tale to tell/The Tell-Tale Heart. The police were looking into it when he heard his own heartbeat again, which he had mistaken for the elderly man's in the dark in The Tell-Tale Heart. My blood froze whenever the eye touched me, therefore I gradually decided to kill the elderly man in order to permanently banish the eye from my life.
Learn more about The Tell-Tale Heart
https://brainly.com/question/20780533
#SPJ9
Which statement correctly describes part of the carbon cycle?
o A. The amount of carbon in the soil increases when plants decay.
OB. The amount of carbon in the ocean decreases when fossil fuels are burned.
o C. The amount of carbon in the atmosphere decreases when igneous rocks form.
o D. The amount of carbon in the atmosphere increases when photosynthesis occurs.
Answer:
A is the right answer
Explanation:
A is the right answer
The column on the far left of the periodic table contains the
Answer:
Alkali metals........
What is true about the ribosomes found in prokaryotes?
A. Prokaryotic ribosomes are often found attached to the endoplasmic reticulum.
B. Prokaryotic ribosomes are smaller than eukaryotic ribosomes.
C. Prokaryotic ribosomes consist of only a large subunit.
D. Prokaryotic ribosomes are larger than eukaryotic ribosomes.
What allows carbon to bond with up to four other atoms at a time and form the macromolecules that are essential to life ?
Answer:
A covalent bond is formed when atoms share electrons in their valence shells. Carbon …
Explanation:
A covalent bond is formed when atoms share electrons in their valence shells. Carbon …
DUE IN ONE HOUR PLEASE HELP
What is the answer for this?!!!
Answer:
Your answer is B).
Explanation:
If the pH is somewhere around 6.0 when the seeds have been placed, then the flowers will be pink, even if later on you try to change to pH levels of the soil, there will be very little change in the color of the flowers.
Question 24 (5 points)
Mitosis is the cell cycle that creates 2 identical cells. Body cells like skin cells and bone cells are created by this cycle,
True
O False
Answer:
;f,;lg,lfm,pf
Explanation:
Answer:
false
Explanation:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set
Which statement best describes the role of phospholipids in the cells of living organisms?
They act as the building blocks for cell membranes.
They communicate information between cells.
They carry the instructions for cell processes.
They act as a source of fuel for cell processes.
Amoeba Sisters Video Recap: Prokaryotic vs. Eukaryotic Cells 7. At the end of the video, there's a vocabulary challenge mentioned. Can you use the vocab to create your own sentences to compare and contrast prokaryotic cells with eukaryotic cells? If you need more space, you can attach an additional sheet of paper.
Answer:
True nucleus and organelles.
Explanation:
The main difference between Prokaryotic cells and Eukaryotic Cells are given below.
Prokaryotic cells have no true nucleus while Eukaryotic Cells have true nucleus. true nucleus means that membrane is surrounded the nucleus which clearly show the nucleus. Prokaryotic cells have no organelles while eukaryotic cells have organelles which perform specific function in the cell. these organelles are plasma membrane, ribosome, mitochondria, vacuoles, cytoskeleton, plastids and endoplasmic reticulum.
True nucleus and organelles.
What is the difference between prokaryotes and eukaryotes?
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information.
Thus, the True nucleus and organelles are the answer.
To learn more about prokaryotes and eukaryotes click here:
https://brainly.com/question/1100720
What will most likely happen if a person does not consume the minimum daily requirement of carbohydrates?
Answer:
the body will break down chitin from the bones and glycogen from the liver hope it helps pls mark brainliest
Sam's Earth Science class is about to walk the planets. What does that mean? Well, his teacher has tied a large helium
balloon outside and students will pace off the distance to each planet, using this scale as a guide. Sam's teacher has
told the class to use the idea of a "pace" as a unit of measure for the activity. A pace is two steps-one with each foot.
One pace is about 1 meter. The students predicted how many paces it would take to reach each planet. It takes 6
paces to reach Mercury and Pluto was 592 paces from the start. When they had completed the activity, one student
had stopped at 287 paces. What planet did that student represent?
◄)))
A)
B)
C)
D)
Jupiter
Neptune
Saturn
Uranus
The planet did that student represent is Neptune
balloon outside and students will pace off the distance to each planet, using this scale as a guide. Sam's teacher has
told the class to use the idea of a "pace" as a unit of measure for the activity. A pace is two steps-one with each foot.
One pace is about 1 meter. The students predicted how many paces it would take to reach each planet. It takes 6
paces to reach Mercury and Pluto was 592 paces from the start.
When they had completed the activity, one student
had stopped at 287 paces. The student represent the planet Neptune.
To learn more about planet Neptune here:-
https://brainly.com/question/811328?referrer=searchResults
#SPJ9
Question 2
A seed germinates when it is buried in nutrient rich soil and watered.
True
Fase
Please ASAP hehehehe i
What type of cells reproduce by mitosis (scientific and basic word)? List three examples.
What type of cells reproduce by meiosis (scientific and basic word)? List examples.
Below, list the steps of mitosis in order then give a brief description of what happens during each step:
Below, list the steps of meiosis in order then give a brief description of what happens during each step:
Will give brainiest answer fasttttttttttt plz and no oneanswer just cause of points
Explanation:
1. Multi celled organisms, body(somatic) cells, single celled organisms.
2. gametes (Sex cells), haploid cells.
3. Interphase - when they are not dividing.
Prophase - nuclear membrane breakdown, chromatin turn to chromosomes and spindle fibers appears.
Metaphase - nuclear membrane completely gone, chromosomes line up along the middle and spindle fibers joins pole to centromere.
Prophase - spindle fibers contract and double stranded chromosomes pulled apart to either poles.
Telophase - nuclear membrane forms, two cells separate, spindle fibers breakdown and chromosomes lengthen and turn to chromatin.
4. I'm not sure about this one.
1. Multi celled organisms, body(somatic) cells, single celled organisms.
2. gametes (Sex cells), haploid cells.
3. Interphase - when they are not dividing.
What are multi celled organisms?A multicellular organism is an organism that consists of more than one cell, in contrast to unicellular organism.
Multicellular organisms are those composed by multiple cells. They are classified in 13 major groups of terrestrial living beings, including animals, plants, fungi, ciliates, algae, and foraminifera. The number of cells per organism range from some tens to up to several million.
Animals, plants, and fungi are multicellular organisms. Multicellular organisms are much bigger in size and are very complex and intricate in their composition along with structure. Human beings, animals, plants, insects are examples of multicellular organisms.
Learn more about multi celled organisms:
https://brainly.com/question/14215979
#SPJ2
I need help with these questions about impulse and momentum for my test review!
Help will be appreciated :)
Multiple Choice: Write the letter of the correct answer.
1. uses neurons to send and deliver messages that are fast acting, localized, and short-lived.
a. Endocrine System
b. Nervous System
c.Circulatory System
2. sends slower-moving hormones through the blood that target broad areas and have more lingering effects.
a. Endocrine System
b. Nervous System
c. Circulatory System
3. cook up hormones and secrete them into the blood without using ducts.
a. Endocrine gland
b. Nervous gland
c.Circulatory gland
4. A is a just any structure that makes and secretes a hormone.
a. organ
b. gland
c. cell
5. is the master gland of the body.
a. Endocrine gland
b. Pituitary gland
c. Thyroid gland
Answer:
1 b i
2 c
3 a
4 b
5 I don't know
i think this is the answer
In a certain species of plant, the color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the probability of an offspring being purple?
Answer:
If both are (PP and ww) and one is dominant the other is recessive then it is 100% purple.
IF both are heterozygous (pw) then it is 75% purple and 25% white
if one is Hetro(pw) and the other is (ww) 50% white 50% purple
Explanation:
name 1-2 carbohydrates that are not used primarily for energy.
In which part of the cell does glycolysis take place?
A.Cell membrane
B.Cytoplasm
C.Nucleus
D.Mitochondrion
Answer:
Cytoplasm.
Explanation:
Glycolysis occurs in the cytoplasm.