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Charra [1.4K]
3 years ago
10

Which of the following statements is true?

Biology
2 answers:
Luda [366]3 years ago
8 0
Global winds rising near equator and cold air sinking near the poles
alukav5142 [94]3 years ago
5 0

Answer:

well i think the top layer of sedimentary rock is older than the bottom layer

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if a man with type ab blood marries a woman heterozygous for type A what is the probability that their child would be type B???
Anna11 [10]

Answer:

1/4.

Explanation:

Via a punett square, the only possible combinations are AA, AB, AO and BO. Since BO is the only way the child has type B, the chances are 1 in 4.

8 0
3 years ago
How much sperm does a man produce each day
Nadya [2.5K]

Answer:

about 525 billion sperm cells

Explanation:

In fact, the average male will produce roughly 525 billion sperm cells over a lifetime and shed at least one billion of them per month. A healthy adult male can release between 40 million and 1.2 billion sperm cells in a single ejaculation.

5 0
3 years ago
Read 2 more answers
Which of the following would differ if you compared the same reaction taking place with and without an enzyme
SIZIF [17.4K]

Answer:

The correct answer is - option C.

Explanation:

Chemical energy is the energy that every substance or chemical have and its not affected by the presence or absence of the enzyme, while the activation energy is the required energy to initiate for a chemical reaction. If the energy of the chemical reaction is less than the activation energy reaction will not take place.

Presence of a enzyme lowers the amount of the energy for the initiating the reaction which is activation energy and the chemical reaction takes place.

Thus, the correct answer is - option C.

3 0
3 years ago
A protein biochemist attempted to determine the amino acid sequence of a decapeptide. Use the results from the trypsin, chymotry
Maksim231197 [3]

Answer:

The possible sequence of the decapeptide is Met-Val-Lys-Tyr-Thr-Trp-Ala-Arg-Pro-Phe.

Explanation:

The cyanogen bromide cleaves the carboxyl end of Met (methionine and non-peptide). Trypsin cleaves on the C-terminal of Arg and Lys, however, not on the N-terminal of Pro, which signifies that Lys is the last amino acid in T2. Hence, Met-Val-Lys----. The middle part of the sequence can be predicted from the digestion done by chymotrypsin.

The chymotrypsin cleaves on the C terminal of Phe, Trp, Tyr, however, not on the N side of Pro. CT3 exhibit Lys, Met, Tyr, Val, as Met-Val and Tyr are the initial three amino acids, therefore, Tyr must be the fourth one. Now the sequence will be Met-Val-Lys-Tyr...

CT1 possesses Ala, Arg, Phe, Pro, as chymotrypsin cleaves the C side of the Phe, thus, the last amino acid should be Phe. Also, CT1 has Ala as the first amino acid. Also, trypsin does not cleave on the N-end of Pro. Thus, the sequence of CT1 strands will be Ala-Arg-Pro-Phe.  

In CT2, chymotrypsin cleaves on the C-side of trp. Thus, the sequence of CT2 strands as Thr-Trp is found in the middle. Thus, the whole sequence of the decapeptide strand will be:  

Met-Val-Lys-Tyr-Thr-Trp-Ala-Arg-Pro-Phe.  

3 0
3 years ago
9(5x + 1) ÷ 3y
juin [17]

Answer:

\frac{9(5x + 1)}{3y}  \\  =  \frac{3(5x + 1)}{y}  \\  =  \frac{15x + 3}{y}

3 0
3 years ago
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