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docker41 [41]
3 years ago
15

How do scientists learn about the age of the solar system and its planetary bodies? Select the two correct answers.

Biology
1 answer:
Makovka662 [10]3 years ago
8 0

Answer: B, C

Explanation: Scientists use radiometric dating of meteorites and analyze the impact craters on planetary body surfaces to learn about the age of the solar system and its planetary bodies.

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Mutations in DNA include deletions and insertions. These types of mutations:
pantera1 [17]

Answer:

(A). Result in different amino acids to be read due to frame shifts

Explanation:

Insertion or deletion mutations (or Indel mutations) can be defined as mutations in DNA due to insertion (addition) or deletion of nucleotide bases in DNA.  

These mutations lead to change in reading frames (sequence of codons), which leads to formation of protein having completely different amino acid sequence. Hence, these mutations are also cause frameshift mutations.

This is due due to triplet nature of genetic codes as insertion or deletion of one or more bases (but not three) would change change in codon sequence and mutated sequence can form a non-functional or truncated protein.

Thus, the correct answer is option (A).

6 0
3 years ago
Help biomolecule packet pls!
Scilla [17]

Answer:

The answer to your question is:

Explanation:

1 or more double bonds                                    unsaturated

Usually solid at room temperature                    saturated

Molecules are tightly packed togheter             saturated

Usually liquid at room temperature                  unsaturated

Most plant fats                                                    unsaturated

Most animal fats                                                 saturated

3 0
3 years ago
24. Which organism would occupy the
Nadusha1986 [10]

Answer:

The organism to have maximum energy would be the algae since ii will be at the lowest level. so the answer is 'B'.

Explanation:

The pyramid of energy shows the flow of energy from one trophic level to other. The lowest trophic level is occupied by the producers. In this case algae acts as the producer. Krill acts as the primary consumer, followed by leopard seal as the secondary consumer and finally killer whale as the tertiary consumer. The <em>lowest trophic level </em> contains maximum energy.

As we go upwards, only 10% of the energy gets transferred to the next trophic level.

6 0
3 years ago
I actually do not know this....does someone else?
Lerok [7]
Well, ask yourself, "Do I try hard enough?" "Was it the best I could do?" And well if the answer is yes, then you have nothing to stress out about too much. Maybe talk to your teacher and ask for extra credit. Get tutoring. Talk to a guidance counselor. If none of that helps, well then you're just not the best at the subject, but just try your best. In the future, you won't even remember about all those grades! Coming from a 6th grader, the beginning of the year was super hard. I'm not the best at math, but I'm very good at Language Arts. Everyone has their own weaknesses and strengths. Don't worry about it.
8 0
3 years ago
A histologist examines a tissue slide and observes many fibers tightly packed together in a parallel arrangement. a few cells ca
neonofarm [45]

<u>Answer</u>: Dense regular (fibrous) connective tissue.

<u>Explanation</u>:

  • <em>Connective tissue</em> is a tissue that performs various functions such as binding, connecting and supporting the other organs or tissues or separating one tissue from another.
  • <em>Dense regular connective tissue</em> connects various tissues present in the body.
  • Since the fibers are tightly <em>packed</em>, this tissue is <em>dense and fibrous</em>, and because the arrangement of the fibers is in <em>parallel</em> fashion, it is of the <em>regular</em> type.
8 0
3 years ago
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