Answer:
erosion
Explanation:
Question 10
6.7 pts
Which of the following most likely happens in the cells of a person running a
marathon?
The respiration rate increases to produce more ATP.
The cell division rate increases to produce more muscle fibers
The photosynthesis rate increases to produce more sugars
The replication rate increases to produce more DNA
Answer:
The respiration rate increases to produce more ATP.
Explanation:
Running requires energy so the cells need to make more ATP through cellular respiration.
Leona drew a diagram to compare ginkgoes and conifers.
Which characteristic belongs in the area marked X?
are deciduous
produce cones
look like palm trees
are the largest group
Answer:
A. are deciduous
Explanation:
Ginkgo trees are broadleaf trees or deciduous trees.
Answer: The answer is A .Are deciduous
Explanation:) Hope this helps brainliest would be appreciated
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(L1) The plasma membrane of a cell is selectively permeable (or semi-permeable), which means it
A.controls all cellular activities.
B.is responsible for asexual reproduction.
C.allows some materials to pass.
D.has a carbohydrate foundation,
Answer:
C. Allows some materials to pass.
Explanation:
Answer:
c
Explanation:
Being selectively permeable means that it selects what comes in and what goes out.
Select the correct answer.
Why will a decrease in pH of the stomach affect protein digestion?
OA. Decrease in pH of the stomach will distort the structure of peptides in food, which affects the action of the enzyme pepsin.
O B. Decrease in pH of the stomach will distort the active site of the enzyme pepsin, which affects its
action.
O C. Decrease in DH of the stomach will distort the active site of the enzyme lipase, which affects protein digestion. Yes
Answer:
cats
Explanation:
n
List 3 ways that microwaves are beneficial to society
5.Write observation and conclusion of each of the following activities
Answer:
Water puts pressure depends on their amount.
Explanation:
On the left side, there is less quantity of water in the tube that put less pressure on the bag present at the bottom and the bag swells slightly while on the other hand, on the right side, there is more amount of water in the tube that puts large pressure on the bag located at the bottom and as a result it swells higher than the other bag so we can conclude that more water puts more pressure and less water puts less pressure.
Which of the following rows in the table best compares the function of a plant's xylem and phloem? I Need help ASAP!
Row 1
Xylem
- transports glucose absorbed by the roots to the rest of the plant
- alive at maturity
Phloem
- transports water and nutrients produced by photosynthesis in the leaves to the rest of the plant
- dead at maturity
Row 2
Xylem
- transports glucose produced by photosynthesis in the leaves to the rest of the plant
- dead at maturity
Phloem
- transports water and nutrients absorbed by the roots to the rest of the plant
- alive at maturity
Row 3
Xylem
- transports water and nutrients absorbed by the roots to the rest of the plant
- dead at maturity
Phloem
- transports glucose made during photosynthesis in the leaves to the rest of the plant
- alive at maturity
Row 4
Xylem
- transports water and nutrients produced by photosynthesis in the leaves to the rest of the plant
- alive at maturity
Phloem
- transports glucose absorbed by the roots to the rest of the plant
- dead at maturity
Answer:
row 3
Explanation:
xylem transport water and nutrient absorbed by the root to other part of the plant
Answer:
Row 3
Explanation:
I took the exam
We’re you able to place some events within the periodic table with just a single clue
Explanation:
is that a personal question, or on a quiz or something?
Light-skinned people generally have a greater proportion of which pigment in their skin?
Keratin
Pheomelanin
Eumelanin
Carotene
Answer:
Pheomelanin
Explanation:
Dark-skinned individuals produce more melanin than those with pale skin.
Light-skinned people typically have a greater proportion of pigment in their skin Pheomelanin, Dark-skinned persons produce more melanin than those with pale skin.Thus, option "B" is correct
What is the difference between pheomelanin and eumelanin?
Eumelanin is black or brown tint and pheomelanin is red or yellow pigment.
Individual who create lots of pheomelanin tend to have lighter skin, often because of freckling.
Freckles occur when melanocytes clump together. Melanocytes are generally scattered rather evenly in the skin.
Thus, option "B" is correct, Dark-skinned individuals produce more melanin than those with pale skin.
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The ability to taste the chemical PTC is determined by a single gene in humans with the ability to taste given by the dominant allele T and the inability to taste by the recessive allele t. Suppose two heterozygous tasters (Tt) have a large family. What is the likelihood that their first child will be a taster
Answer:
75%
Explanation:
This question involves a single gene coding for the ability to taste the chemical PTC. The allele coding for the ability to taste (T) is dominant over the allele coding for the inability to taste (t). This means that an heterozygous individual will have the ability to taste PTC.
According to this question, if two heterozygous tasters (Tt) cross to have a large family i.e. Tt × Tt, the following gametes will be produced by each parent;
Tt = T and t
Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:
TT, Tt, Tt - Tasters (3/4 or 75%)
tt - Non-taster (1/4 or 25%)
Note that based on the question asked, there is a 75% probability that their first child will be a taster because there is equal segregation of alleles into gametes.
A student prepares a cell homogenate from spinach leaves. She performs a cell fractionation experiment to determine the shortest amount time of centrifugation at 2000xg that will yield the highest percentage of chloroplasts in the pellet fraction. She splits the spinach homogenate into 5 equal parts and centrifuges the parts at 2000xg for 0, 5, 10, 15 or 20 min. She then determines the proportion of chloroplasts in the supernatant and pellet fractions. The controlled variable(s) in the student's experiment is/are:_____.
a. proportion of chloroplasts in each fraction.
b. use of same plant homogenate throughout.
c. time of centrifugation in minutes.
d. g-force of centrifugation.
Answer:
b. use of same plant homogenate throughout.
Explanation:
In an experiment, the controlled variable, also called the CONSTANT is the variable that is kept the same throughout the course of the experiment in order not to influence the result or outcome of the experiment.
In this question, a student performs a cell fractionation experiment to determine the shortest amount time of centrifugation (manipulated variable) at 2000xg that will yield the highest percentage of chloroplasts (responding variable) in the pellet fraction. In this experiment, the variable being controlled is same spinach plant homogenate used throughout.
What’s the answer to this pls
18. Marlon took the microscope and observed a sliced plant leat. He switched it into 100% magnification and saw
a green pigment. In which part of the plant cellis it found?
a nucleus b. mitochondrion G chloroplast d. lysosome
Answer:
chloroplast
Explanation:
its is the green pigment in the plant. it allows photosynthesis to take place
Which statement correctly describes an interaction between organelles in the model?
A
Letter U and letter S control the collection and release of waste from the cell.
В.
Letter T and letter R store the genetic material necessary for replication of the cell.
ОООО
C
Letter Q and letter S are responsible for creating and delivering nutrients throughout the cell.
D
Letter U and letter R are involved with the processes of transcription and translation for the cell.
Answer:
B) letter T and letter R store the genetic material necessary for replication of the cell
T-nucleus and R-mitochondria
The statement that correctly describes an interaction between organelles is : ( D ) Letter U and Letter R are involved with the processes of transcription and translation for the cell.
Letter U represents the Nucleus of the plant cell model attached while the Letter R represents the cytoplasm of the cell model.
The nucleus of a cell contains the genetic material ( DNA ) of the cell while the cytoplasm fills up the cell and is enclosed by the plasma cell membrane of the cell. Transcription involves the synthesis of RNA from a DNA template contained in the Nucleus and this process involves, The nucleus and cytoplasm of a cell.
Hence we can conclude that The statement that correctly describes an interaction between organelles is : ( D ) Letter U and Letter R are involved with the processes of transcription and translation for the cell.
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2. A man has type A blood and his wife has type B blood. A physician types the blood of their four children
and finds that each of the children has a different blood type. What are the genotypes of the parents? How
would you explain that all four blood types could be represented by these four children?
Answer:
A person with type A blood receiving a transfusion of type B or AB blood would have an ABO incompatibility reaction. In an ABO incompatibility reaction, your immune system attacks the new blood cells and destroys them. If you have type AB blood, you have both A and B antigens .
hope it will help . please mark me as brainlistwhy are plastids called kitchen of the cell
Answer:
Plastids are known as kitchen of a cell because some kinds of plastids (chloroplasts) play a vital role in the process of photosynthesis in which plants make their own food by sunlight,water and nutrients.
Explanation:
I hope this helps!
Answer:Plastids are known as kitchen of a cell because some kinds of plastids (chloroplasts) play a vital role in the process of photosynthesis in which plants make their own food by sunlight,water and nutrients, which makes it more better for animals to eat. And the plant provides healthy nutrients for them.