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Agata [3.3K]
3 years ago
7

Please rewrite in own words. PLEASE HELP VERY DESPERATE!!!!!!!!!!!!!!!

Biology
1 answer:
butalik [34]3 years ago
6 0
Fossils give  Scientists look into past life. A dinosaur that mixes together a reptile and a bird  helps scientists understand present day reptiles & birds. Animal Ancestry helps Scientists discover what ancestors of present day animals are. example: a dinosaur and an alligator.  DNA sequences help with this. By matching together the strands of DNA from these fossils can help scientists match together the strands of DNA sequences  For example the gene for a protein found in a horse will overlap in sequence fairly well with the protein gene from a cow but will not match very well with a worm.
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Euglena use chloroplasts to make food through the photosynthesis process. <br> a. True<br> b. False
Elodia [21]
True

Chloroplasts are organelles that are responsible for the photosynthetic functioning of an organism.Photosynthesis is the process by which an organism uses the photons to produce energy. These organisms uses the sun, together with the acquired resource of water and carbon dioxide to create sugar and process into energy. 
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2 years ago
What is even ungulates (hoofed animal), typical herbivores(cows, pigs, and giraffes)
Airida [17]
Ungulate refers to the large, diverse group of mammals which use the tip of their toes to support their whole body weight while moving. They are divided into two, which are odd toe and even toe ungulates.
Even toe ungulates are those mammals whose weight are supported equally by their third and fourth toes while they are moving. Examples of such animals are cattle, pig, giraffe, camel, etc.<span />
6 0
3 years ago
What are the phases of meiosis where crossing over occur
ehidna [41]

Answer:

Prophase 1

Explanation:

Prophase I :It can be divided into five stages:

1)Leplotene: In this stage, chromosome becomes visible and shorten as a single structure.

2)Zygotene: Homologous / sister chromosome pair up. This process is known as synapse. Synapse is the process of attachment of homologous /sister chromosome. One pair comes from the male parent while the other comes from the female parent.

3)Pachytene: Bivalents shorten.

4)Diplotene:Point of attachment of non-sister chromatids. The two chromosomes are seen to be joined at several points along their length. These points are known as Chiasmata.(Chiasmata, a cross). The paternal gene A, B, C may swap for the maternal gene a, b, c for instance, leading to a new gene combination in the resulting chromatids. This is referred to as *CROSSING OVER*.

5)Diakenesis: Homologous centromere move apart.

So, crossing over occurs in *Prophase 1.

5 0
3 years ago
Which term best describes the systems in an animal's body?
umka21 [38]

Answer:

B. interconnected

Explanation:

All the systems in our bodies (humans are indeed animals) are connected with each other to create a functional being. The blood flows throughout the body, providing nutrients; the bones support the structure and protect the heart and lungs. They work together.

Why not A: The systems are all completely necessary. There's nothing extraneous in our bodies, because extraneous stuff takes up energy, and our biology is incredibly economical.

Why not B: They're not interchangeable. How would you like your bones to turn to blood? Uh-huh.

Why not D: They interact with each other consistently, so they're not separate or segregated.

4 0
3 years ago
Enzymes speed up a biological reaction by?
Fittoniya [83]
D. Raising the activation energy
7 0
3 years ago
Read 2 more answers
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