A
release ATP during the process of cellular respiration,
B
capture light energy in order to perform photosynthesis.
с
are the organelle responsible for cellular metabolism.
D
regulate the movement of material into and out of the cell.
Semipermeable membranes of cells regulate the movement of materials into and out of the cell, allowing the cell to maintain a balance of substances, a process known as homeostasis.
The function of the semipermeable membrane in cells is to regulate the movement of material into and out of the cell. While cellular respiration, photosynthesis, and cellular metabolism all happen within cells, they do not directly pertain to the function of the cell membrane itself. The membrane's semipermeable nature allows certain substances to pass through while preventing others, maintaining a balance of nutrients, ions, and other substances within the cell - a process known as homeostasis.
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When a disease kills a large amount of the rabbit population which is the competition among wolves most likely. So, the correct answer is (B).
Competition is the interaction of individuals that fight for a common resource which is in limited supply, but more likely can be defined as the direct or indirect interaction of organisms which leads to a change in fitness when the organisms share the same resource. This results in the negative effects on the weaker competitors.
There are three forms of competition among the animals. Out of three. two of them , interference competition and exploitation competition, are categorized as real competition and the third form is apparent competition which is not a real competition.
Interference competition occurs directly between different individuals but exploitation competition and apparent competition occur indirectly between different individuals.
Thus, when a disease kills a large amount of the rabbit population which is the competition among wolves most likely. So, the correct answer is (B).
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B. 20
C. 10
D. 0
E. 1/2
Answer: Option C
Out of the 20 resulting offspring of the test cross, 10 (50%) will be tall.
Explanation:
Let True-breeding tall plant be "TT"
Let short plant be tt
On crossing, all offspring will be "Tt"
Test cross involves the breeding of an individual with a phenotypically recessive individual. The test cross of offspring "Tt" against "tt" will then yield an equal ratio (1:1) of Tt to tt.
Thus, out of the 20 resulting offspring of the test cross, only 10 (50%) will be tall.
When a true-breeding tall pea plant is crossed with a short plant, all the F1 offspring will be heterozygous tall. Upon performing a test cross of a heterozygous F1 tall plant with a short plant, about half of the resulting offspring should be tall. Thus, out of 20 offspring, approximately 10 (Option C) should be tall.
In garden peas, the allele for tall plants (T) is dominant over the allele for short plants (t). A true-breeding tall plant has two copies of the dominant allele (TT), while a short plant has two recessive alleles (tt). When you perform a test cross between a heterozygous tall plant (Tt) and a short plant (tt), the results should theoretically yield a 1:1 ratio of tall to short offspring. Since the question states the tall plant is true-breeding and crossed with a short plant, all offspring from this initial cross would be heterozygous tall (Tt). Each of these offspring, when test crossed with a short (tt) plant, would produce tall and short offspring in a 1:1 ratio.
Therefore, out of 20 offspring from the test cross, approximately half should be tall and half should be short. So, the expected number of tall offspring would be about 10.
The correct answer to the question is option C- 10.
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