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blondinia [14]
3 years ago
12

PLEASE ANSWER QUICKLY I'LL GIVE YOU 40 POINTS AND CHOOSE THE BRAINLIEST!

Biology
2 answers:
Kruka [31]3 years ago
8 0

Answer:

C.  Algae colonies are made of similar cells that work together.

Explanation:

  • They may be large and elaborately interconnected as the Volvox biflagellate algae or smaller and simple as in Sanura.
  • These cells ensemble free-swimming unicellular groups and each cell has flagella as these cells grow they divide log naturally, and the colonies also divide based on growth.
  • They produce asexually by surface cells and become concave before forming a circle.
Triss [41]3 years ago
3 0

Answer: c algae colonies are made up of similar cells that work together

Explanation:

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DNA, the genetic material of living organisms, is damaged by light in the
insens350 [35]

Answer:

The correct option is <em>B) ultraviolet region, especially below a wavelength of 320 nm.</em>

Explanation:

Ultraviolet light carries an enormous amount of energy in it. It is invisible to the human eye. When UV light with enormous energy and wavelength lesser than 320nm, hits the DNA, it causes changes in the structure of the DNA. Mostly, it affects the thymine nitrogenous base regions and forms pyrimidine dimers. The structure of the DNA changes on all the sites where dimers form and hence, they cannot be properly transcribed.

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3 years ago
A horse has 64 chromosomes and a donkey has 62. Using your knowledge of meiosis, explain why a cross between a horse and a donke
nlexa [21]
Ok, so when a horse (with 64 chromosomes) is crossed with a donkey(that has 62 chromosomes), each parent give its child half of its chromosomes. [64/2=32] [62/2=31]. So the mule gets 31 pairs of chromosomes plus 32 pairs of chromosomes. That equals 63 total chromosomes. In order to be a parent, it must give <span>half of its chromosomes to its child. [63/2=31.5] You can't have half a chromosome, so the mule is a sterile organism. Let me know if you have questions.</span>
8 0
3 years ago
Why do scientists consider vestigial structures (like a human appendix) evidence for evolution?
qaws [65]

Answer:

vestigial structures are considered evidence because scientists believe they are structures that were once used by a species ancestors but are not longer needed. these structures do not impair the organism in any way, so there is no need for evolution to get rid of them. for example, the human appendix is considered a vestigial structure.

Explanation:

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4 0
3 years ago
Why are scorpions florescent to black light? How might it help them survive?
givi [52]

Answer:

Well, something in the scorpions' exoskeleton causes them to glow. The fluorescence makes their bodies more sensitive to light, so it's easier to find a shady hiding spot to survive in.

Explanation:

3 0
3 years ago
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Put the following processes in order from first to last.
soldi70 [24.7K]

Answer:Ovulation—>Fertilization—>Implantation—->Birth

Explanation:the ovum is first released(ovulation) then a sperm merges with it (fertilization) the zygote is moved to the uterus(implantation) it grows to become a baby and the mother delivers it(birth)

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3 years ago
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