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jonny [76]
2 years ago
14

4 easy biology questions !! please helppp!!! **attachments provided

Biology
1 answer:
FromTheMoon [43]2 years ago
6 0

Answer:

1) [J] Sand dollar, 2) [G] Ants and grasshoppers, 3) [A], 4) [G]

Explanation:

Please don't be mad if I'm wrong on a few I'm in AP Environmental Science so I'm kind of keen on this stuff but still I'm trying to help!

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How many rounds of dna replication are there in a meiotic cell cycle?
RUDIKE [14]

Answer:

Two rounds

Explanation:

Meiosis is characterized by one round of DNA replication followed by two rounds of cell division, resulting in haploid germ cells. Crossing-over of DNA results in genetic exchange of genes between maternal and paternal DNA.

7 0
3 years ago
If a male dog has 20 chromosomes in his sperm cell, how many does he have in his body cell?
LUCKY_DIMON [66]
40 a body cell has twice the number of chromosomes than in a gamete
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3 years ago
Advantages of constant body temperaure
Leya [2.2K]
Proteins function optimally at a specific temperature. So if you get too hot or too cold, biochemical reactions in your body start to function less well. If the situation becomes extreme enough, they can cease to function well enough to sustain life. 

Warm-blooded animals have an advantage over cold-blooded ones in that their bodies automatically try to maintain the optimal termperature for things in their bodies to function. Cold-blooded animals depend on the environmental temperature to do this for them. That's why reptiles are very sluggish when they're cold, but will "wake up" when they get warm. 

The cost to this benefit is that metabolically, warm-blooded animals require a lot more fuel to run their bodies. It's very energy-intensive to maintain a constant body temperature. Cold-blooded animals require far less fuel than warm-blooded ones relative to their size. 

The way that proteins operate in a specific temperature is also true of the pH in your body which is also very tightly maintained.
3 0
3 years ago
Our Sun has a surface temperature of about 9000 degrees Celsius, and is G2 Star.
Ksenya-84 [330]

Answer:

Sun is classified as a G2 V star, with G2 standing for the second hottest stars of the yellow G class of surface temperature about 5,800 kelvins (K) and the V representing a main sequence, or dwarf, star, the typical star for this temperature class.

8 0
3 years ago
Which cellular structure is NOT surrounded by at least one membrane?
denis-greek [22]
According to my knowledge there are many. Ribosomes, Centrioles, ER. <span>cellular structure is NOT surrounded by at least one membrane.</span>
5 0
3 years ago
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