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2 years ago

What is it called when an amphibian releases a large amount of sperm and eggs into the A. water?

Biology

1 answer:

Ivenika [448]2 years ago

3 0

Answer:

C. internal fertilization

Explanation:

The release of eggs and sperm into the water is known as spawning.

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5) A white flower is crossed with a homozygous red flower (red is dominant).

kondaur [170]

Answer:

The Punnett square will look like this:

Rw Rw

Explanation:

In order to have a white flower, both alleles must be recessive. A homozygous red flower must have two dominate alleles.

Well use (w) for white, and (R) for red.

The parent alleles are:

1 - ww

2 - RR

(see picture)

6 0

3 years ago

You own a winery in Napa Valley. An assistant accidentally leaves the lid for a vat of wine slightly ajar. Would the yeast insid

anastassius [24]

<span>When the lid for a vat of wine is slightly open, the yeast inside can continue to perform alcoholic fermentation because the carbon dioxide produced by the yeast during fermentation will act as a blanket over the wine. Nevertheless, the air around the fermenter must be still and enough carbon dioxide should be produced to continue alcoholic fermentation. However, at some point, carbon dioxide will fall and can no longer protect the wine. This is the right time to get your wine covered before it will be vulnerable to undesirable microorganisms. </span>

Therefore, open fermentation is good in the early stages of fermentation because yeast need oxygen to synthesize sterols and assimilate fatty acids to ensure the nutrients it needs to multiply and ferment the 70% of the sugar from the fruit. Furthermore, the yeast is responsible in decomposing sugar from the grapes into alcohol and carbon dioxide.

4 0

3 years ago

Solid sodium reacts with liquid water to form hydrogen gas according to the equation 2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g) Wha

lana66690 [7]

Answer: 21850.42mmHg or 28.78atm

Explanation: From the equation of the reaction, 2 moles of sodium reacts with 2 moles of water to produce 2 moles of NaoH and 1 mole of hydrogen gas at s.t.p.

molar volume of gas at s.t.p. = 22.4dm^3,

standard temperature = 0°C or 273K,

standard pressure = 760mmHg or 1atm,

molar mass of Na = 23g;

volume of the container= 20L or 20dm^3

From the equation, 2 moles or 46g of Na produces i mole or 22.4 dm^3 of hydrogen.

Therefore, 1kg or 1000g of Na will produce 22.4 * 1000/(46)= 486dm^3 of hydrogen.

To find the pressure of the gas produced, the formula P1V1/T1 = P2V2/T2

P1= 760mmHg, T1= 273K, V1 (initial volume of gas)= 486dm^3, T2=50.0°C or 50+273K= 323K, V2( final volume of gas= volume of vessel)=20dm^3 P2=?

P1= P1V1*T2/(V2T1)= 760mmHg * 323/(273)= 21850.42mmHg or 1atm*21850.42/760= 28.78atm

5 0

3 years ago

Does prokaryotic have a nucleus to protect bits dna

vagabundo [1.1K]

Answer:no

Explanation:

3 0

3 years ago

What is observation used by scientists

ser-zykov [4K]

Answer:

Scientists use observation to collect and record data, which enables them to construct and then test hypotheses and theories.

Explanation:

hope this helps

3 0

2 years ago