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Ad libitum [116K]
3 years ago
5

Hypothesis: homologous structures are evidence of a common ancestor ? Why is this correct ?

Biology
1 answer:
weqwewe [10]3 years ago
3 0
Yes, because homologous structures are different structures we have that other different organisms might have. humans and monkeys both have arms, although they are completely different species, this can tell scientists that they could have shared a common ancestor in the past, and may have evolved
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The cell produced by the fusion of an egg and a sperm is the
Nataliya [291]

Answer:

Option C, zygote

Explanation:

The complete question is

The cell produced by the fusion of an egg and a sperm is the

a. gamete

b. oocyte

c. zygote

d. germ line cells

e. somatic cell

Solution

During the process of fertilization in sexual reproduction, when a male gamete (sperm) and female gamete (egg) fuses they form a new cell known as zygote.  

Both male and female gamete are haploid with”n” number of chromosomes (only a single set of genes) and when they combine they form diploid zygote  with “2n” number of chromosomes.

Hence, option C is correct

6 0
3 years ago
The _____________ hypothesis about hominin bipedalism states that energy-efficient walking on two legs arose so that hominins co
Harman [31]

Answer:

Patchy Forest

Explanation:

The Patchy Forest  hypothesis about hominin bipedalism states that energy-efficient walking on two legs arose so that hominins could search for food that was dispersed as a result of climatic changes at the end of the Miocene.

I have also done this before!

5 0
3 years ago
How are solids, liquids, and gases different?
Shtirlitz [24]

Answer:

Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases.

Explanation:

gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.

4 0
3 years ago
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Julli [10]
<h2>Active & Passive transport</h2>

Explanation:

  • Active transport is where a chemical reaction using ATP moves things in/out of the cell through transport proteins within the cell wall. It uses a concentration gradient to trigger the reaction (it goes against the concentration gradient in active transport)
  • Molecules move against a concentration gradient ( low concentration ―→ high concentration)
  • Cellular energy (ATP) is required
  • Passive transport also uses a concentration gradient by diffusion (hydrophobic or very small polar molecules) and facilitated diffusion via carrier proteins and channels
  • Molecules move along the concentration gradient (high concentration ―→ low concentration)
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4 0
4 years ago
Explain why a plant with a mitochondrial issue likely will not survive.​
stira [4]

Mitochondria are cellular organelles that are in charge of oxidative phosphorylation, which is the critical process of turning nutrients into adenosine triphosphate (ATP) molecules that power normal cell operations. At least hundreds of mitochondria are found in each neuron. Because nerve cells are postmitotic, any mitochondrial damage received will accumulate over time and produce malfunction. Cells die as a result of widespread mitochondrial damage because they can no longer create adequate energy.

7 0
3 years ago
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