Which evolved first, photosynthesis or cellular respiration?
Answer:
Because photosynthesis is a source of oxygen, it seems intuitive that photosynthesis evolved first: once enough O2 was in the air, then respiration would be able to arise in the newly oxygen-enriched atmosphere. However, some biologists have argued since the 1970's that respiration in fact evolved first.
Explain how selective breeding can lead to some sheep overheating from having too much wool
Answer:
Selective breeding increases the frequency of favorable gene combinations associated with a particular phenotypic trait
Explanation
Selective breeding, also known as artificial selection, is a method for improving phenotypic traits in plants or animals by mating individuals with specific desirable hereditary traits and then select offspring that have better performance for these traits. This technique is effective only when the parental population used for selection exhibits genetic variability for the trait to be selected. The sheep's wool is a quantitative trait, i.e., a phenotypic characteristic that depends on the cumulative effects of many genes and the environment. In this case, the artificial selection will consist of obtaining sheep with increased production of wool, which is achieved by selecting favorable gene combinations for improved trait performance.
What is Nasal Cavity
student wants to view live organisms less than 1 millimeter in size, which are found in a water sample collected from a stream. Which microscope would be best for the student to use while observing these living organisms?
1.) dissecting
2.) compound
3.) scanning
4.) transmission
Answer; I’m guessing the second choice.
Explanation:
Because she said she wants to observe it while it’s still living my guess is compound light microscope don’t take my word on it though, just a guess ...
The type of microscope that would be best for the student to use while observing these living organisms is the compound microscope. Thus, the correct option for this question is B.
What is Microscope?A microscope may be defined as a type of laboratory instrument that is utilized in order to examine objects or specimens that are too small to be observed by the unaided eye.
A Scanning electron microscope is used to visualize the object or specimen which is approximately 500 nm in size. While transmission electron microscope is used to analyze objects which are approximately 1 nm in size.
Now, according to the question, the size of a living organism that a student wants to observe is less than 1 millimeter in size. So, she requires to utilize a compound microscope with utmost priority.
Therefore, a compound microscope is a type of microscope that would be best for the student to use while observing these living organisms. Thus, the correct option for this question is B.
To learn more about Compound microscope, refer to the link:
https://brainly.com/question/12993552
#SPJ6
What level of organization describes a flock of Canada Geese in a field?
Answer:
Community?
Explanation:Which level of organization describes an oak forest with bacteria, fundi, deal leaves, butterflies, blue jays, soil, and stones?
FIRST TO ANSER GETS BRAINLIRSY HURRY UP NOW
Answer:
The one you chose would be the correct answer! I read through it all and it seems like the best answer yet!
Question 3 (1 point)
A protein used to regulate the cell cycle at the checkpoints is:
a) Cyclin
b) Mitosis
c) Glucose
d) ATP Synthase
Explain what a byproduct is and give an example of one not discussed in the unit.
Answer:
A byproduct is usually derived from a production process, manufacturing process, or a chemical reaction. Some common examples of byproducts include bran which is a by product from milling wheat into flour even plastic bags from oil refineries used to be byproducts until they started to be used for shopping purposes. I hope this helped.
Explanation:
What is the common Characteristic is shared between a tree, a shark, a human and
an amoeba?
A) they all make their own food
B) they all have the ability to freely move
C) they all breathe air through lungs
D) they are all made up of cells
Answer:
D. they're all made up of cells
The statement 'they are all made up of cells' indicates a common characteristic that is shared between a tree, a shark, a human and an amoeba (Option D).
All living things or biological systems are always composed of one or more cells.The cells are the structural and functional units of all living organisms.A living thing can be composed of a single cell (unicellular organism) or many cells (multicellular organisms).In conclusion, the statement 'they are all made up of cells' indicates a common characteristic that is shared between a tree, a shark, a human and an amoeba (Option D).
Learn more in:
https://brainly.com/question/5763151
How much of earth's atmosphere is oxygen
All organisms in the kingdom Plantae
A.
are multi-celled, photosynthetic, and contain membrane-bound organelles.
B.
reproduce sexually, contain membrane-bound organelles, and photosynthetic.
C.
are multi-celled, heterotrophic, and do not contain membrane-bound organelles.
D.
reproduce asexually, do not contain membrane-bound organelles, and photosynthetic.
All organisms in the Kingdom Plantae A. are multi-celled, photosynthetic, and contain membrane-bound organelles.
PlantaeKingdom Plantae includes autotrophic organisms which can prepare their own food by the process of photosynthesis. All organisms in Kingdom Plantae are multicellular and they also contain membrane bound organelles like mitochondria, nucleus, ribosomes, chloroplast and others.Learn more about Kingdom Plantae:
https://brainly.com/question/13898387
Which of the following is an example of an organism adapted to live in a cold weather
ecosystem, such as the tundra?
PLEEEAAASEEE HEEELLLPPPP!!! I CAN MARK BRAINLIEST! Write a well-explained paragraph for the prompt below. Be sure to explain BOTH pieces of evidence.
one of the products that a plant produces in photosynthesis
Answer:
starch
Explanation:
In the presence of sunlight ,water,and oxygen the photosynthesis occurs .
As the by product of photosynthesis the starch or glucose(C6H12O6) is produce.
blood can receive Rh+ or Rh-blood.
blood can receive Rh-blood.
Answer: An Rh+ person can receive Rh+ or Rh-. An Rh- person can only receive Rh- blood
Explanation: the Rhesus (Rh) group has three types, CDE. Of these, only the D locus is of general importance, and this is the one involved when we talk about Rh+ or Rh-. The D allele is dominant and DD or Dd are the Rh+ type, while dd is Rh-.
Rh- people have an immune response to the D and produce antibodies which causes blood clots and this can be life-threatening. Some Rh- people have anti-D antibodies in their blood, but the level is too low to affect Rh+ people transfused with Rh- blood. This is also unlikely because Rh+ is by far the more common type.
A particular problem arises when a mother is Rh- and the father Rh+ because the baby may be Rh+. If this happens the mother will produce antibodies to the foetus’s blood which will kill it if they cross the placenta. This is avoided by giving the mother Rh immunoglobulin injections during pregnancy which switch off anti-D antibody production.
It is rare for the C and E loci to cause a significant immune response.
Answer:
Rh+
blood can receive Rh+ or Rh- blood.
Rh-
blood can receive Rh- blood.
Explanation:
edge
The movement of molecules from a
place where there is a greater/higherConcentration to an area where there is lesser/lower concentration is:
a. homeostasis
b. Osmosis
c. active transport
d. diffusion
Which of the following are reasons that details are important in reading. Select all that apply.
Details are not important in reading
Details help to find specific information
Details give more information about the subject
Details help to keep the reader interested
Answer:
Details help to find specific information
Details give more information about the subject
Details help to keep the reader interested
Explanation:
Okay, read the sentences
She sat down.
She sat down on the very uncomfortable-looking throne that was gilded with huge precious stones.
Not only is the second sentence more entertaining, it gives more information, we now know that whoever this is, is of high status.
8) Cancer is caused by which of these malfunctions in the cell cycle?
(1 Point)
a. The cell cycle stops, and as a result the cell cannot replicate correctly and the cell dies
b. The cell cycle replicates DNA too rapidly, filling up with DNA until bursting
c. The cell cycle misses checkpoints and runs out of control, replicating non-stop
Mee
d. The cell cycle occurs out of order, replicating without DNA to put in the new cell
Reproduction is the function of both ______ and organisms.
Answer:
el sapoel sapo i
s
Explanation:
Answer:
Offspring
Explanation:
Can someone help me with this question please.
Answer:
C
Explanation:
Plants have chloroplast so that is 1
Fungi have a cell wall but no chloroplast so that is 2
Animals have no cell wall or chloroplasts so that is 3
If the diploid number is 50, what is the haploid number?
Answer:
25
Explanation:
Haploid refers to any cell that has 23 chromosomes (half of the total 46). Diploid refers to any cell that has all 46 chromosomes. Zygote is the result of two gamete (haploid) cells fusing, and becoming a diploid cell.
you can memorize them by H if for half the number and D is for double
Answer:
25
Explanation:
Haploid refers to any cell that has 23 chromosomes (half of the total 46). Diploid refers to any cell that has all 46 chromosomes. Zygote is the result of two gamete (haploid) cells fusing, and becoming a diploid cell.
you can memorize them by H if for half the number and D is for double
A _____________ is a rootlike structure of nonvascular plants that is usually one cell thick.
A rhizoid is a rootlike structure of nonvascular plants that is usually one cell thick.
What are non-vascular plants?Non-vascular plants may be defined as those plants that lack a vascular system consisting of xylem and phloem and possess simpler tissue for the conduction of water transport.
A rhizoid provides an anchorage and the capability to absorb nutrients from the soil to the plants.
Therefore, it is well described above.
To learn more about Rhizoids, refer to the link:
https://brainly.com/question/2698008
#SPJ1
When does a hypothesis become a scientific theory?
Explanation:
When the scientists investigate the hypothesis, they follow a line of reasoning and eventually formulate a theory. Once a theory has been tested thoroughly and is accepted, it becomes a scientific law .
why is the cell membrane described as selectively permeable?
1.) substances are not allowed into the cell
2.) substances diffuse freely in and out of the cell
3.) some substances pass into the cell while others cannot
4.) some substances can move into the new cell but not out of the cell
Answer:
1
Explanation:
PLSSSS HELP NEED THIS ANSWEED ASAP
Probiotics. They come in the form of culture concentrates in certain foods, dietary supplements and fermented dairy products, like yogurt or cheese. Probiotics are used to ferment the milk used to produce yogurt, cheeses and kefir. They are the live, active cultures in this yogurt. Probiotics are often called good or helpful __________ because they help keep your gut healthy.
Answer:
I think the answer is bacteria
the products of photosynthesis are
Answer:
Glucose and oxygen
Explanation:
Glucose and oxygen are the final products of photosynthesis.
what leaves are are stunning
Answer:
srry can u explain a little more?
but if this is a trick question red leaves????
help please for both
i’ll mark brainlist
Answer:
they are both true
Explanation:
if agglutination happen who will die mother or fetus?
Answer:
Explanation:
If u think it logically they are both likely to die but the baby is more at risk because the baby feed of the mother through the umbolical chord so the doctors would do their best to save the mother over the baby because of course the mother can have a child again but it's likely the baby dies and suffers.Plus the baby will be exposed to toxic so it will have a big effect ton the baby even if they both survive the baby will have alot of health problems and as it will not be able to develop properly!
1. A cell that enters mitosis with 16 chromosomes will divide to produce___cells. Each cell will have____chromosomes.
2. A cell that enters meiosis with 16 chromosomes will pass through___divisions, producing____cells. Each cell will have____chromosomes.
Answer:
2 cells, 8 chromosomes
I don't know the answer for two I hope I helped tho
